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Fang DX, Chen MJ, Zeng FR, Guo SQ, He L, Liu BW, Huang SC, Zhao HB, Wang YZ. Self-evolutionary recycling of flame-retardant polyurethane foam enabled by controllable catalytic cleavage. MATERIALS HORIZONS 2024; 11:3585-3594. [PMID: 38742392 DOI: 10.1039/d4mh00039k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2024]
Abstract
Polyurethane (PU) foams, pivotal in modern life, face challenges suh as fire hazards and environmental waste burdens. The current reliance of PU on potentially ecotoxic halogen-/phosphorus-based flame retardants impedes large-scale material recycling. Here, our demonstrated controllable catalytic cracking strategy, using cesium salts, enables self-evolving recycling of flame-retardant PU. The incorporation of cesium citrates facilitates efficient urethane bond cleavage at low temperatures (160 °C), promoting effective recycling, while encouraging pyrolytic rearrangement of isocyanates into char at high temperatures (300 °C) for enhanced PU fire safety. Even in the absence of halogen/phosphorus components, this foam exhibits a substantial increase in ignition time (+258.8%) and a significant reduction in total smoke release (-79%). This flame-retardant foam can be easily recycled into high-quality polyol under mild conditions, 60 °C lower than that for the pure foam. Notably, the trace amounts of cesium gathered in recycled polyols stimulate the regenerated PU to undergo self-evolution, improving both flame-retardancy and mechanical properties. Our controllable catalytic cracking strategy paves the way for the self-evolutionary recycling of high-performance firefighting materials.
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Affiliation(s)
- Dan-Xuan Fang
- College of Architecture and Environment, The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials (MoE), National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), State Key Laboratory of Polymer Materials Engineering, College of Chemistry, Sichuan University, Chengdu, 610064, China.
| | - Ming-Jun Chen
- School of Science, Xihua University, Chengdu, 610039, China
| | - Fu-Rong Zeng
- College of Architecture and Environment, The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials (MoE), National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), State Key Laboratory of Polymer Materials Engineering, College of Chemistry, Sichuan University, Chengdu, 610064, China.
| | - Shuai-Qi Guo
- College of Architecture and Environment, The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials (MoE), National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), State Key Laboratory of Polymer Materials Engineering, College of Chemistry, Sichuan University, Chengdu, 610064, China.
| | - Lei He
- College of Architecture and Environment, The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials (MoE), National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), State Key Laboratory of Polymer Materials Engineering, College of Chemistry, Sichuan University, Chengdu, 610064, China.
| | - Bo-Wen Liu
- College of Architecture and Environment, The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials (MoE), National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), State Key Laboratory of Polymer Materials Engineering, College of Chemistry, Sichuan University, Chengdu, 610064, China.
| | | | - Hai-Bo Zhao
- College of Architecture and Environment, The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials (MoE), National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), State Key Laboratory of Polymer Materials Engineering, College of Chemistry, Sichuan University, Chengdu, 610064, China.
| | - Yu-Zhong Wang
- College of Architecture and Environment, The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials (MoE), National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), State Key Laboratory of Polymer Materials Engineering, College of Chemistry, Sichuan University, Chengdu, 610064, China.
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2
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Witter AE. Acute toxicity of petroleum asphalt seal coat leachates to Ceriodaphnia dubia is linked to polymer preservatives. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 935:173123. [PMID: 38740202 DOI: 10.1016/j.scitotenv.2024.173123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2024] [Revised: 04/07/2024] [Accepted: 05/08/2024] [Indexed: 05/16/2024]
Abstract
Low-VOC waterborne asphalt-emulsion (AE) seal coat is considered more sustainable than solvent-based coal-tar emulsion seal coat because asphalt emulsions contain negligible amounts of carcinogenic PAHs and release fewer harmful volatile organic compounds. Yet, many low-VOC coatings leach water-soluble substances under outdoor conditions. To investigate the chemical composition of seal coat leachates, three AE formulations were cured under natural weathering conditions and exposed to simulated runoff over a 10-day field trial. Runoff was collected and concentrated using ion-exchange solid-phase extraction (SPE) and analyzed using gas chromatography/mass spectrometry (GC-MS). Leached compounds included hydrocarbons, esters, amines, siloxanes, plasticizers, biocides, polyethylene glycol (PEG) ethers, urethanes, and toluene diisocyanate (TDI). Glycol ethers comprised 29-97 % of the measured leachate mass. Two seal coat formulations contained isothiazolinone biocides, methylchloro- and methylisothiazolinone (CMIT/MIT; 0.5 mg/L in runoff), while a third seal coat formulation continuously leached TDI, a reactive polyurethane (PU) precursor (0.7 mg/L in runoff). Biocide-containing leachates showed acute toxicity to the freshwater water flea, Ceriodaphnia dubia after 48 h, while TDI-containing leachate showed no acute toxicity, suggesting that leachate toxicity was due to in-can polymer preservatives. As biocides are implicated in impaired reproductive signaling, these results support the use of alkaline pH to avoid biofouling and reinforce the goal of reducing and/or avoiding the use of biocides altogether, especially for environmentally friendly products.
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Affiliation(s)
- Amy E Witter
- Dickinson College, Department of Chemistry, Carlisle, PA 17013, United States of America.
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3
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Džunuzović JV, Stefanović IS, Džunuzović ES, Kovač TS, Malenov DP, Basagni A, Marega C. Fabrication of Polycaprolactone-Based Polyurethanes with Enhanced Thermal Stability. Polymers (Basel) 2024; 16:1812. [PMID: 39000667 PMCID: PMC11243817 DOI: 10.3390/polym16131812] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2024] [Revised: 06/20/2024] [Accepted: 06/23/2024] [Indexed: 07/17/2024] Open
Abstract
The benefit of being acquainted with thermal properties, especially the thermal stability of polyurethanes (PU), and simplified methods for their improvement is manifold. Considering this, the effect of embedding different amounts of unmodified and surface-modified TiO2 nanoparticles (NPs) within PU, based on polycaprolactone (PCL) and Boltorn® aliphatic hyperbranched polyester, on PU properties was investigated. Results obtained via scanning electron microscopy, swelling measurements, mechanical tests and thermogravimetric analysis revealed that TiO2 NPs can be primarily applied to improve the thermal performance of PU. Through surface modification of TiO2 NPs with an amphiphilic gallic acid ester containing a C12 long alkyl chain (lauryl gallate), the impact on thermal stability of PU was greater due to the better dispersion of modified TiO2 NPs in the PU matrix compared to the unmodified ones. Also, the distinct shape of DTG peaks of the composite prepared using modified TiO2 NPs indicates that applied nano-filler is mostly embedded in soft segments of PU, leading to the delay in thermal degradation of PCL, simultaneously improving the overall thermal stability of PU. In order to further explore the thermal degradation process of the prepared composites and prove the dominant role of incorporated TiO2 NPs in the course of thermal stability of PU, various iso-conversional model-free methods were applied. The evaluated apparent activation energy of the thermal degradation reaction at different conversions clearly confirmed the positive impact of TiO2 NPs on the thermal stability and aging resistance of PU.
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Affiliation(s)
- Jasna V. Džunuzović
- Center of Excellence in Environmental Chemistry and Engineering, Institute of Chemistry, Technology and Metallurgy, University of Belgrade, Njegoševa 12, 11000 Belgrade, Serbia
- Department of Chemistry, Institute of Chemistry, Technology and Metallurgy, University of Belgrade, Njegoševa 12, 11000 Belgrade, Serbia;
| | - Ivan S. Stefanović
- Department of Chemistry, Institute of Chemistry, Technology and Metallurgy, University of Belgrade, Njegoševa 12, 11000 Belgrade, Serbia;
| | - Enis S. Džunuzović
- Faculty of Technology and Metallurgy, University of Belgrade, Karnegijeva 4, 11100 Belgrade, Serbia;
| | - Tijana S. Kovač
- Innovation Center, Faculty of Technology and Metallurgy, University of Belgrade, Karnegijeva 4, 11100 Belgrade, Serbia;
| | - Dušan P. Malenov
- University of Belgrade—Faculty of Chemistry, Studentski trg 12–16, 11000 Belgrade, Serbia;
| | - Andrea Basagni
- Department of Chemical Sciences, University of Padova, Via Marzolo 1, 35131 Padova, Italy; (A.B.); (C.M.)
| | - Carla Marega
- Department of Chemical Sciences, University of Padova, Via Marzolo 1, 35131 Padova, Italy; (A.B.); (C.M.)
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4
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Wang Z, Zhang Y, Zhang H, Sun Q, He X, Ji H. Waste Plastic-Supported Pd Single-Atom Catalyst for Hydrogenation. MATERIALS (BASEL, SWITZERLAND) 2024; 17:3058. [PMID: 38998141 PMCID: PMC11242047 DOI: 10.3390/ma17133058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2024] [Revised: 06/19/2024] [Accepted: 06/19/2024] [Indexed: 07/14/2024]
Abstract
As worldwide plastic pollution continues to rise, innovative ideas for effective reuse and recycling of waste plastic are needed. Single-atom catalysts (SACs), which are known for their high activity and selectivity, present unique advantages in facilitating plastic degradation and conversion. Waste plastic can be used as a support or raw material to create SACs, which reduces waste generation while simultaneously utilizing waste as a resource. This work successfully utilized waste plastic polyurethane (PU) as a support, through a unique Rapid Thermal Processing Reactor (RTPR) to synthesize an efficient Pd1/PU SACs. At 25 °C and 0.5 MPa H2, Pd1/PU displayed outstanding activity and selectivity in the hydrogenation of styrene, as well as remarkable stability. Pd1/PU performed well in hydrogenating a variety of common substrates. These findings highlight the great potential of SACs in plastic waste reuse and recycling, offering intriguing solutions to the global plastic pollution problem.
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Affiliation(s)
- Ziyue Wang
- Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education, Fine Chemical Industry Research Institute, School of Chemistry, Institute of Green Chemistry and Molecular Engineering, Sun Yat-sen University, Guangzhou 510275, China; (Z.W.); (Y.Z.); (H.Z.); (Q.S.)
| | - Ying Zhang
- Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education, Fine Chemical Industry Research Institute, School of Chemistry, Institute of Green Chemistry and Molecular Engineering, Sun Yat-sen University, Guangzhou 510275, China; (Z.W.); (Y.Z.); (H.Z.); (Q.S.)
| | - Hao Zhang
- Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education, Fine Chemical Industry Research Institute, School of Chemistry, Institute of Green Chemistry and Molecular Engineering, Sun Yat-sen University, Guangzhou 510275, China; (Z.W.); (Y.Z.); (H.Z.); (Q.S.)
| | - Qingdi Sun
- Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education, Fine Chemical Industry Research Institute, School of Chemistry, Institute of Green Chemistry and Molecular Engineering, Sun Yat-sen University, Guangzhou 510275, China; (Z.W.); (Y.Z.); (H.Z.); (Q.S.)
| | - Xiaohui He
- Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education, Fine Chemical Industry Research Institute, School of Chemistry, Institute of Green Chemistry and Molecular Engineering, Sun Yat-sen University, Guangzhou 510275, China; (Z.W.); (Y.Z.); (H.Z.); (Q.S.)
- Guangdong Technology Research Center for Synthesis and Separation of Thermosensitive Chemicals, Guangzhou 510275, China
| | - Hongbing Ji
- Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education, Fine Chemical Industry Research Institute, School of Chemistry, Institute of Green Chemistry and Molecular Engineering, Sun Yat-sen University, Guangzhou 510275, China; (Z.W.); (Y.Z.); (H.Z.); (Q.S.)
- State Key Laboratory Breeding Base of Green-Chemical Synthesis Technology, Institute of Green Petroleum Processing and Light Hydrocarbon Conversion, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China
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5
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Ali A, Ganie SA, Mir TA, Mazumdar N. Synthesis and characterization of amino-functionalized guar gum based polyurea: Preparation of iodine complexes, structural investigation and release studies. Int J Biol Macromol 2024; 271:132711. [PMID: 38815942 DOI: 10.1016/j.ijbiomac.2024.132711] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2024] [Revised: 04/27/2024] [Accepted: 05/27/2024] [Indexed: 06/01/2024]
Abstract
Biobased materials are expanding dramatically in various industrial applications due to their unique intrinsic properties. In this study, various chemical functionalization procedures were used to synthesize guar gum, a naturally occurring polysaccharide-based polyurea, and its iodine complexes. Firstly, guar gum was subjected to tosylation reaction using p-toluene sulphonyl chloride to introduce tosyl moieties in the polymer chain with the degree of substitution (DS) ranging between 0.16 and 1.54. Sample having the highest degree of tosyl moiety was further reacted with tris(2-aminoethyl) amine to produce 6-deoxy-6-tris(2-aminoethyl) amine derivative via nucleophilic substitution reaction to impart amino functional groups. The degree of substitution in 6-deoxy-6-tris(2-aminoethyl) amine derivative was found to be 0.59. 6-deoxy-6-tris(2-aminoethyl) amine derivative was reacted with different diisocyanates (Toluene-2,4-diisocyanate (TDI), 1,6-diisocyanatohexane (HMDI)) to produce guar gum based polyurea. Iodine complexes of the resulting polyurea were prepared by reacting with different iodinating agents. Different chemical reactions, formation of polyurea and its iodine complexes were thoroughly analyzed by different analytical techniques such as FT-IR, NMR, elemental analysis, XRD, UV-Vis spectroscopy, and a reaction scheme has been proposed. Morphological and rheological characteristics were analyzed by SEM and viscosity measurement. Thermal analysis was carried out by TGA and DSC studies. Finally, by examining the complex's UV-Vis spectra, the iodine release characteristics from polyurea‑iodine complexes were investigated.
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Affiliation(s)
- Akbar Ali
- Materials (Polymer) Research Laboratory, Department of Chemistry, Jamia Millia Islamia, Central University, New Delhi 110025, India; Department of Chemistry, Kargil Campus, University of Ladakh, Kargil 194103, India.
| | - Showkat Ali Ganie
- Materials (Polymer) Research Laboratory, Department of Chemistry, Jamia Millia Islamia, Central University, New Delhi 110025, India
| | - Tariq Ahmed Mir
- Materials (Polymer) Research Laboratory, Department of Chemistry, Jamia Millia Islamia, Central University, New Delhi 110025, India
| | - Nasreen Mazumdar
- Materials (Polymer) Research Laboratory, Department of Chemistry, Jamia Millia Islamia, Central University, New Delhi 110025, India.
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6
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Khan M. Chemical and Physical Architecture of Macromolecular Gels for Fracturing Fluid Applications in the Oil and Gas Industry; Current Status, Challenges, and Prospects. Gels 2024; 10:338. [PMID: 38786255 PMCID: PMC11121287 DOI: 10.3390/gels10050338] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2024] [Revised: 05/01/2024] [Accepted: 05/09/2024] [Indexed: 05/25/2024] Open
Abstract
Hydraulic fracturing is vital in recovering hydrocarbons from oil and gas reservoirs. It involves injecting a fluid under high pressure into reservoir rock. A significant part of fracturing fluids is the addition of polymers that become gels or gel-like under reservoir conditions. Polymers are employed as viscosifiers and friction reducers to provide proppants in fracturing fluids as a transport medium. There are numerous systems for fracturing fluids based on macromolecules. The employment of natural and man-made linear polymers, and also, to a lesser extent, synthetic hyperbranched polymers, as additives in fracturing fluids in the past one to two decades has shown great promise in enhancing the stability of fracturing fluids under various challenging reservoir conditions. Modern innovations demonstrate the importance of developing chemical structures and properties to improve performance. Key challenges include maintaining viscosity under reservoir conditions and achieving suitable shear-thinning behavior. The physical architecture of macromolecules and novel crosslinking processes are essential in addressing these issues. The effect of macromolecule interactions on reservoir conditions is very critical in regard to efficient fluid qualities and successful fracturing operations. In future, there is the potential for ongoing studies to produce specialized macromolecular solutions for increased efficiency and sustainability in oil and gas applications.
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Affiliation(s)
- Majad Khan
- Department of Chemistry, King Fahd University of Petroleum & Minerals (KFUPM), Dhahran 31261, Saudi Arabia; ; Tel.: +966-0138601671
- Interdisciplinary Research Center for Hydrogen Technologies and Energy Storage (IRC-HTCM), King Fahd University of Petroleum & Minerals (KFUPM), Dhahran 31261, Saudi Arabia
- Interdisciplinary Research Center for Refining and Advanced Chemicals (IRC-CRAC), King Fahd University of Petroleum & Minerals (KFUPM), Dhahran 31261, Saudi Arabia
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7
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Lee GR, Lee EJ, Shin HS, Kim J, Kim I, Hong SC. Preparation of Non-Isocyanate Polyurethanes from Mixed Cyclic-Carbonated Compounds: Soybean Oil and CO 2-Based Poly(ether carbonate). Polymers (Basel) 2024; 16:1171. [PMID: 38675090 PMCID: PMC11053720 DOI: 10.3390/polym16081171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2024] [Revised: 04/09/2024] [Accepted: 04/19/2024] [Indexed: 04/28/2024] Open
Abstract
This study presents the synthesis and characterization of non-isocyanate polyurethanes (NIPU) derived from the copolymerization of cyclic-carbonated soybean oil (CSBO) and cyclic carbonate (CC)-terminated poly(ether carbonate) (RCC). Using a double-metal cyanide catalyst, poly(ether carbonate) polyol was first synthesized through the copolymerization of carbon dioxide and propylene oxide. The terminal hydroxyl group was then subjected to a substitution reaction with a five-membered CC group using glycerol-1,2-carbonate and oxalyl chloride, yielding RCC. Attempts to prepare NIPU solely using RCC and diamine were unsuccessful, possibly due to the low CC functionality and the aminolysis of RCC's linear carbonate repeating units. However, when combined with CSBO, solid NIPUs were successfully obtained, exhibiting good thermal stability along with enhanced mechanical properties compared to conventional CSBO-based NIPU formulations. Overall, this study underscores the potential of leveraging renewable resources and carbon capture technologies to develop sustainable NIPUs with tailored properties, thereby expanding their range of applications.
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Affiliation(s)
- Ga Ram Lee
- HMC, Department of Nanotechnology and Advanced Materials Engineering, Sejong University, 209 Neungdong-ro, Seoul 05006, Republic of Korea; (G.R.L.); (E.J.L.)
| | - Eun Jong Lee
- HMC, Department of Nanotechnology and Advanced Materials Engineering, Sejong University, 209 Neungdong-ro, Seoul 05006, Republic of Korea; (G.R.L.); (E.J.L.)
| | - Hye Sun Shin
- Industrial Gas Research TF Team, Particulate Matter Research Center, Research Institute of Industrial Science & Technology (RIST), 187-12 Geumho-ro, Gwangyang-si 57801, Republic of Korea; (H.S.S.); (J.K.)
| | - Joonwoo Kim
- Industrial Gas Research TF Team, Particulate Matter Research Center, Research Institute of Industrial Science & Technology (RIST), 187-12 Geumho-ro, Gwangyang-si 57801, Republic of Korea; (H.S.S.); (J.K.)
| | - Il Kim
- Department of Polymer Science and Engineering, Pusan National University, Busan 46241, Republic of Korea;
| | - Sung Chul Hong
- HMC, Department of Nanotechnology and Advanced Materials Engineering, Sejong University, 209 Neungdong-ro, Seoul 05006, Republic of Korea; (G.R.L.); (E.J.L.)
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8
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Li D, Yu L, Lu Z, Kang H, Li L, Zhao S, Shi N, You S. Synthesis, Structure, Properties, and Applications of Fluorinated Polyurethane. Polymers (Basel) 2024; 16:959. [PMID: 38611217 PMCID: PMC11013766 DOI: 10.3390/polym16070959] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2024] [Revised: 03/30/2024] [Accepted: 03/30/2024] [Indexed: 04/14/2024] Open
Abstract
Fluorinated polyurethane (FPU) is a new kind of polyurethane (PU) material with great applicational potential, which is attributed to its high bond energy C-F bonds. Its unique low surface energy, excellent thermal stability, and chemical stability have attracted considerable research attention. FPU with targeted performance can be precisely synthesized through designing fluorochemicals as hard segments, soft segments, or additives and changes to the production process to satisfy the needs of coatings, clothing textiles, and the aerospace and biomedical industries for materials that are hydrophobic and that are resistant to weathering, heat, and flames and that have good biocompatibility. Here, the synthesis, structure, properties, and applications of FPU are comprehensively reviewed. The aims of this research are to shed light on the design scheme, synthesis method, structure, and properties of FPU synthesized from different kinds of fluorochemicals and their applications in different fields and the prospects for the future development of FPU.
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Affiliation(s)
- Donghan Li
- College of Materials Science and Engineering, Shenyang University of Chemical Technology, Shenyang 110142, China
- Liaoning Provincial Key Laboratory of Rubber & Elastomer, Shenyang University of Chemical Technology, Shenyang 110142, China
| | - Lu Yu
- College of Materials Science and Engineering, Shenyang University of Chemical Technology, Shenyang 110142, China
- Liaoning Provincial Key Laboratory of Rubber & Elastomer, Shenyang University of Chemical Technology, Shenyang 110142, China
| | - Zhan Lu
- College of Materials Science and Engineering, Shenyang University of Chemical Technology, Shenyang 110142, China
| | - Hailan Kang
- College of Materials Science and Engineering, Shenyang University of Chemical Technology, Shenyang 110142, China
- Liaoning Provincial Key Laboratory of Rubber & Elastomer, Shenyang University of Chemical Technology, Shenyang 110142, China
| | - Long Li
- College of Materials Science and Engineering, Shenyang University of Chemical Technology, Shenyang 110142, China
- Liaoning Provincial Key Laboratory of Rubber & Elastomer, Shenyang University of Chemical Technology, Shenyang 110142, China
| | - Shufa Zhao
- Shenyang Guide Rubber Products Co., Ltd., Shenyang 110141, China
| | - Ning Shi
- College of Materials Science and Engineering, Shenyang University of Chemical Technology, Shenyang 110142, China
| | - Shibo You
- College of Materials Science and Engineering, Shenyang University of Chemical Technology, Shenyang 110142, China
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9
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Lin L, Tu Y, Li Z, Wu H, Mao H, Wang C. Synthesis and application of multifunctional lignin-modified cationic waterborne polyurethane in textiles. Int J Biol Macromol 2024; 262:130063. [PMID: 38340925 DOI: 10.1016/j.ijbiomac.2024.130063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Revised: 01/22/2024] [Accepted: 02/07/2024] [Indexed: 02/12/2024]
Abstract
Waterborne polyurethanes (WPUs) often have limitations like inadequate weathering resistance and thermal stability. To overcome these shortcomings, lignin has been selected as a modifier for its abundant availability, renewability, and biocompatibility. This study synthesized a cationic WPU using isophorone diisocyanate and polyethylene glycol as raw materials. Hydrophilicity was attained through the inclusion of dihydroxyethyl dodecylamine as a chain extender, while the introduction of epoxy monomers and lignin served to modify the polyurethane. Furthermore, a dye dispersion for cotton fabric dyeing was prepared by combining the synthesized polyurethane, chitosan, and dyes. The cationic nature of the polyurethane played a crucial role in facilitating dye adhesion and uptake on the fabric surface, resulting in improved dyeing performance. The incorporation of epoxy side chains and chitosan cross-linking contributed to the excellent color fastness of the dyed fabrics. Moreover, the incorporation of lignin and chitosan endowed the fabric with antibacterial properties. Simultaneously, it provided effective UV protection, characterized by a high UV protection factor value for the fabrics. This lignin-modified WPU exhibits tremendous potential in applications such as textile coatings, adhesives, and color fixation agents. It effectively addresses the limitations of traditional WPUs and offers notable advantages, including a renewable source, cost-effectiveness, and biocompatibility.
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Affiliation(s)
- Ling Lin
- School of Textile and Clothing, Yancheng Institute of Technology, Yancheng 224051, China.
| | - Yuanfang Tu
- School of Textile and Clothing, Yancheng Institute of Technology, Yancheng 224051, China
| | - Ziyin Li
- School of Textile and Clothing, Yancheng Institute of Technology, Yancheng 224051, China
| | - Huanling Wu
- School of Textile and Clothing, Yancheng Institute of Technology, Yancheng 224051, China
| | - Haiyan Mao
- School of Textile and Clothing, Yancheng Institute of Technology, Yancheng 224051, China
| | - Chunxia Wang
- School of Textile and Clothing, Yancheng Institute of Technology, Yancheng 224051, China
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10
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Türel T, Eling B, Cristadoro AM, Mathieu T, Linnenbrink M, Tomović Ž. Novel Furfural-Derived Polyaldimines as Latent Hardeners for Polyurethane Adhesives. ACS APPLIED MATERIALS & INTERFACES 2024; 16:6414-6423. [PMID: 38282385 PMCID: PMC10859888 DOI: 10.1021/acsami.3c17416] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Revised: 01/12/2024] [Accepted: 01/16/2024] [Indexed: 01/30/2024]
Abstract
Moisture-curing one-component polyurethane systems in adhesive, sealant, and coating applications may show blister formation upon cure. Blisters can be formed when carbon dioxide, generated in the reaction with isocyanate and water, is trapped in the film. This problem can be mitigated by employing latent hardeners such as blocked polyamines, which are activated upon moisture exposure. The hydrolysis of the latent hardener yields the polyamine that quickly reacts with the isocyanate, forming urea linkages, and then chain extends the polymer. The hydrolysis also releases the blocking agent, which can potentially create an unpleasant odor. In this work, a series of di- and trifunctional aldimines were synthesized from commercially available polyamines, biobased hydroxymethyl furfural, and lauroyl chloride. Hydroxymethyl furfural was first esterified with lauroyl chloride and subsequently condensed with the polyamines to form the aldimines. The application of these novel aldimines in a model moisture-curing system allowed the preparation of blister- and odor-free castings. Based on our results, the mechanical performance of the different aldimines in casting and adhesive applications could be related to the polymer network density. This was dependent on the rate of the aldimine hydrolysis reaction to produce the polyamine. In particular, the use of aldimines prepared from polyether amines and 1,5-diamino-2-methylpentane showed excellent adhesive properties.
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Affiliation(s)
- Tankut Türel
- Polymer
Performance Materials Group, Department of Chemical Engineering and
Chemistry, Eindhoven University of Technology, 5600 MB Eindhoven, The Netherlands
| | - Berend Eling
- Institute
of Technical and Macromolecular Chemistry, University of Hamburg, Bundesstrasse 45, 20146 Hamburg, Germany
| | | | - Thomas Mathieu
- BASF
Polyurethanes, Elastogranstrasse 60, 49448 Lemfoerde, Germany
| | | | - Željko Tomović
- Polymer
Performance Materials Group, Department of Chemical Engineering and
Chemistry, Eindhoven University of Technology, 5600 MB Eindhoven, The Netherlands
- Institute
for Complex Molecular Systems, Eindhoven
University of Technology, 5600 MB Eindhoven, The Netherlands
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11
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Baronins J, Antonov M, Abramovskis V, Rautmane A, Lapkovskis V, Bockovs I, Goel S, Thakur VK, Shishkin A. The Effect of Zinc Oxide on DLP Hybrid Composite Manufacturability and Mechanical-Chemical Resistance. Polymers (Basel) 2023; 15:4679. [PMID: 38139933 PMCID: PMC10747173 DOI: 10.3390/polym15244679] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Revised: 12/07/2023] [Accepted: 12/09/2023] [Indexed: 12/24/2023] Open
Abstract
The widespread use of epoxy resin (ER) in industry, owing to its excellent properties, aligns with the global shift toward greener resources and energy-efficient solutions, where utilizing metal oxides in 3D printed polymer parts can offer extended functionalities across various industries. ZnO concentrations in polyurethane acrylate composites impacted adhesion and thickness of DLP samples, with 1 wt.% achieving a thickness of 3.99 ± 0.16 mm, closest to the target thickness of 4 mm, while 0.5 wt.% ZnO samples exhibited the lowest deviation in average thickness (±0.03 mm). Tensile stress in digital light processed (DLP) composites with ZnO remained consistent, ranging from 23.29 MPa (1 wt.%) to 25.93 MPa (0.5 wt.%), with an increase in ZnO concentration causing a reduction in tensile stress to 24.04 MPa and a decrease in the elastic modulus to 2001 MPa at 2 wt.% ZnO. The produced DLP samples, with their good corrosion resistance in alkaline environments, are well-suited for applications as protective coatings on tank walls. Customized DLP techniques can enable their effective use as structural or functional elements, such as in Portland cement concrete walls, floors and ceilings for enhanced durability and performance.
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Affiliation(s)
- Janis Baronins
- Laboratory of Ecological Solutions and Sustainable Development of Materials, Faculty of Materials Science and Applied Chemistry, Institute of General Chemical Engineering, Riga Technical University, Pulka 3, K-3, LV-1007 Riga, Latvia; (V.A.); (A.R.); (V.L.); (A.S.)
- Latvian Maritime Academy of Riga Technical University, Riga Technical University, Flotes Str. 12 K-1, LV-1016 Riga, Latvia
| | - Maksim Antonov
- Department of Mechanical and Industrial Engineering, Tallinn University of Technology, Ehitajate Tee 5, 19086 Tallinn, Estonia;
| | - Vitalijs Abramovskis
- Laboratory of Ecological Solutions and Sustainable Development of Materials, Faculty of Materials Science and Applied Chemistry, Institute of General Chemical Engineering, Riga Technical University, Pulka 3, K-3, LV-1007 Riga, Latvia; (V.A.); (A.R.); (V.L.); (A.S.)
| | - Aija Rautmane
- Laboratory of Ecological Solutions and Sustainable Development of Materials, Faculty of Materials Science and Applied Chemistry, Institute of General Chemical Engineering, Riga Technical University, Pulka 3, K-3, LV-1007 Riga, Latvia; (V.A.); (A.R.); (V.L.); (A.S.)
- Latvian Maritime Academy of Riga Technical University, Riga Technical University, Flotes Str. 12 K-1, LV-1016 Riga, Latvia
| | - Vjaceslavs Lapkovskis
- Laboratory of Ecological Solutions and Sustainable Development of Materials, Faculty of Materials Science and Applied Chemistry, Institute of General Chemical Engineering, Riga Technical University, Pulka 3, K-3, LV-1007 Riga, Latvia; (V.A.); (A.R.); (V.L.); (A.S.)
| | - Ivans Bockovs
- Faculty of Materials Science and Applied Chemistry, Institute of Polymer Materials, Riga Technical University, 3/7 Paula Valdena Street, LV-1048 Riga, Latvia;
| | - Saurav Goel
- School of Engineering, London South Bank University, London SE1 0AA, UK;
- Department of Mechanical Engineering, University of Petroleum and Energy Studies, Dehradun 248007, India
| | - Vijay Kumar Thakur
- Biorefining and Advanced Materials Research Center, Scotland’s Rural College (SRUC), Kings Buildings, West Mains Road, Edinburgh EH9 3JG, UK;
| | - Andrei Shishkin
- Laboratory of Ecological Solutions and Sustainable Development of Materials, Faculty of Materials Science and Applied Chemistry, Institute of General Chemical Engineering, Riga Technical University, Pulka 3, K-3, LV-1007 Riga, Latvia; (V.A.); (A.R.); (V.L.); (A.S.)
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12
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Losio S, Cifarelli A, Vignali A, Tomaselli S, Bertini F. Flexible Polyurethane Foams from Bio-Based Polyols: Prepolymer Synthesis and Characterization. Polymers (Basel) 2023; 15:4423. [PMID: 38006146 PMCID: PMC10675359 DOI: 10.3390/polym15224423] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Revised: 11/02/2023] [Accepted: 11/09/2023] [Indexed: 11/26/2023] Open
Abstract
Bio-polyols (BPOs), characterized by a hydroxyl number up to around 90 mg KOH/g, narrow polydispersity index and relatively low molecular mass up to 2000 g/mol, were synthetized from partially and completely epoxidized soybean and linseed oils and caprylic acid or 3-phenyl butyric acid. These BPOs were used in the presence of toluene diisocyanate to produce polyurethane (PU) foams by using a quasi-prepolymer method involving a two-step reaction. A detailed structural investigation of the prepolymers from toluene diisocyanate and both BPOs and polypropylene glycol was conducted by SEC and solution NMR. The apparent density of the foams was in the range of 40-90 kg/m3, with higher values for foams from the aromatic acid. All the foams showed an open-cell structure with uniform and regular shape and uniform size. The specific Young's moduli and compression deflection values suggest superior mechanical properties than the reference foams. The novel synthesized polyurethanes are excellent candidates to partially replace petroleum-based materials.
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Affiliation(s)
- Simona Losio
- Institute for Chemical Sciences and Technologies “G. Natta” National Research Council, Via A. Corti 12, 20133 Milan, Italy; (A.C.); (A.V.); (S.T.); (F.B.)
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13
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He F, Tang Y, Lu Z, Hu Q, Yang Y, Li G, Li H, Chen K. An effective purification of double-effect distillation for bio-based pentamethylene diisocyanate. RSC Adv 2023; 13:31518-31527. [PMID: 37901260 PMCID: PMC10603822 DOI: 10.1039/d3ra06235j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Accepted: 10/17/2023] [Indexed: 10/31/2023] Open
Abstract
Bio-based pentamethylene diisocyanate (PDI) is a new type of sustainable isocyanate, which has important applications in coatings, foams, and adhesives. Technical-economic analysis of the PDI distillation process can promote the industrialization of PDI. The thermal analysis of PDI facilitates the smooth running of the simulation process. A new PDI heat capacity prediction method was established. The distillation processes of a crude PDI solution by conventional distillation and double-effect distillation were studied. Countercurrent double-effect distillation showed the best energy-saving effects in all double-effect distillation. However, combined with total annual charge (TAC), parallel double-effect distillation was the optimal method for PDI purification. Parallel double-effect distillation can significantly reduce the TAC of production PDI, which is 33.39% lower than that of the conventional distillation. The study demonstrates a clear economic incentive for reducing the cost of PDI purification by parallel double-effect distillation.
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Affiliation(s)
- Feng He
- College of Biotechnology and Pharmaceutical Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University Nanjing 211816 China
- Jiangsu Jicui Industrial Biotechnology Research Institute Co., Ltd Nanjing 211816 China
| | - Yibo Tang
- College of Biotechnology and Pharmaceutical Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University Nanjing 211816 China
| | - Zhufeng Lu
- Gansu Yinguang Juyin Chemical Industry Co., Ltd Yinguang 730999 China
| | - Qixu Hu
- College of Biotechnology and Pharmaceutical Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University Nanjing 211816 China
| | - Yue Yang
- College of Biotechnology and Pharmaceutical Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University Nanjing 211816 China
| | - Ganlu Li
- College of Biotechnology and Pharmaceutical Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University Nanjing 211816 China
| | - Hui Li
- College of Biotechnology and Pharmaceutical Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University Nanjing 211816 China
| | - Kequan Chen
- College of Biotechnology and Pharmaceutical Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University Nanjing 211816 China
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14
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Acierno D, Graziosi L, Patti A. Puncture Resistance and UV aging of Nanoparticle-Loaded Waterborne Polyurethane-Coated Polyester Textiles. MATERIALS (BASEL, SWITZERLAND) 2023; 16:6844. [PMID: 37959441 PMCID: PMC10650790 DOI: 10.3390/ma16216844] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Revised: 10/18/2023] [Accepted: 10/21/2023] [Indexed: 11/15/2023]
Abstract
The goal of this research was to investigate the effect of different types of nanoparticles on the UV weathering resistance of polyurethane (PU) treatment in polyester-based fabrics. In this regard, zinc oxide nanoparticles (ZnO), hydrophilic silica nanoparticles (SiO2 (200)), hydrophobic silica nanoparticles (SiO2 (R812)), and carbon nanotubes (CNT) were mixed into a waterborne polyurethane dispersion and impregnated into textile samples. The puncturing resistance of the developed specimens was examined before and after UV-accelerated aging. The changes in chemical structure and surface appearance in nanoparticle-containing systems and after UV treatments were documented using microscopic pictures and infrared spectroscopy (in attenuated total reflectance mode). Polyurethane impregnation significantly enhanced the puncturing strength of the neat fabric and reduced the textile's ability to be deformed. However, after UV aging, mechanical performance was reduced both in the neat and PU-impregnated specimens. After UV treatment, the average puncture strength of all nanoparticle-containing systems was always greater than that of aged fabrics impregnated with PU alone. In all cases, infrared spectroscopy revealed some slight differences in the absorbance intensity of characteristic peaks for polyurethane polymer in specimens before and after UV rays, which could be related to probable degradation effects.
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Affiliation(s)
- Domenico Acierno
- Regional Center of Competence New Technologies for Productive Activities Scarl, Via Nuova Agnano 11, 80125 Naples, Italy;
| | - Lucia Graziosi
- Regional Center of Competence New Technologies for Productive Activities Scarl, Via Nuova Agnano 11, 80125 Naples, Italy;
| | - Antonella Patti
- Department of Civil Engineering and Architecture (DICAr), University of Catania, Viale Andrea Doria 6, 95125 Catania, Italy;
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15
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Yamauchi H, Inayama S, Nakabayashi M, Hayashi S. Systematic Order-Made Synthesis of Sequence-Defined Polyurethanes with Length, Types, and Topologies. ACS Macro Lett 2023; 12:1264-1271. [PMID: 37656889 DOI: 10.1021/acsmacrolett.3c00469] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/03/2023]
Abstract
Polyurethanes are industrially and academically important as soft materials. They are conventionally synthesized by a process based on step-growth polymerization; thus, molecular weight and structural control are impossible. However, the development of a synthetic strategy for polyurethanes remains a big challenge in designing soft materials. Herein, we demonstrate a synthetic methodology for generating polyurethanes with selectable lengths and termini characteristics. The multistep synthetic process offered the systematic synthesis of high-molecular weight, regioregular, and α,ω-urethane telechelics. Various oligomers with order-made repeating units revealed the effective length of the polymer properties. To demonstrate the scope of our methodology, it was also applied to the synthesis of block co-oligomers, three-armed star oligomers, and miktoarm star co-oligomers. Thus, our method allows the synthesis of high-molecular-weight oligomers with complete structural and molecular weight control, which is of enormous value to materials science; particularly the study and application of structure-property relationships in polyurethanes.
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Affiliation(s)
- Haruka Yamauchi
- School of Engineering Science, Kochi University of Technology, 185 Tosayamada Miyanokuchi, Kami, Kochi 782-8502, Japan
| | - Syunya Inayama
- School of Engineering Science, Kochi University of Technology, 185 Tosayamada Miyanokuchi, Kami, Kochi 782-8502, Japan
| | - Mahiro Nakabayashi
- School of Engineering Science, Kochi University of Technology, 185 Tosayamada Miyanokuchi, Kami, Kochi 782-8502, Japan
| | - Shotaro Hayashi
- School of Engineering Science, Kochi University of Technology, 185 Tosayamada Miyanokuchi, Kami, Kochi 782-8502, Japan
- Research Center for Molecular Design, Kochi University of Technology, Kami, Kochi 782-8502, Japan
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16
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Chen J, Zeng Z, Liu C, Wang X, Li S, Ye F, Li C, Guan X. Aqueous Cationic Fluorinated Polyurethane for Application in Novel UV-Curable Cathodic Electrodeposition Coatings. Polymers (Basel) 2023; 15:3725. [PMID: 37765579 PMCID: PMC10535655 DOI: 10.3390/polym15183725] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Revised: 08/15/2023] [Accepted: 08/21/2023] [Indexed: 09/29/2023] Open
Abstract
Aqueous polyurethane is an environmentally friendly, low-cost, high-performance resin with good abrasion resistance and strong adhesion. Cationic aqueous polyurethane is limited in cathodic electrophoretic coatings due to its complicated preparation process and its poor stability and single performance after emulsification and dispersion. The introduction of perfluoropolyether alcohol (PFPE-OH) and light curing technology can effectively improve the stability of aqueous polyurethane emulsions, and thus enhance the functionality of coating films. In this paper, a new UV-curable fluorinated polyurethane-based cathodic electrophoretic coating was prepared using cationic polyurethane as a precursor, introducing PFPE-OH capping, and grafting hydroxyethyl methacrylate (HEMA). The results showed that the presence of perfluoropolyether alcohol in the structure affected the variation of the moisture content of the paint film after flash evaporation. Based on the emulsion particle size and morphology tests, it can be assumed that the fluorinated cationic polyurethane emulsion is a core-shell structure with hydrophobic ends encapsulated in the polymer and hydrophilic ends on the outer surface. After abrasion testing and baking, the fluorine atoms of the coating were found to increase from 8.89% to 27.34%. The static contact angle of the coating to water was 104.6 ± 3°, and the water droplets rolled off without traces, indicating that the coating is hydrophobic. The coating has excellent thermal stability and tensile properties. The coating also passed the tests of impact resistance, flexibility, adhesion, and resistance to chemical corrosion in extreme environments. This study provides a new idea for the construction of a new and efficient cathodic electrophoretic coating system, and also provides more areas for the promotion of cationic polyurethane to practical applications.
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Affiliation(s)
- Junhua Chen
- School of Environmental and Chemical Engineering, Zhaoqing University, Zhaoqing 526061, China; (J.C.); (Z.Z.); (C.L.); (X.W.); (S.L.); (F.Y.); (C.L.)
- Guangdong Provincial Key Laboratory of Environmental Health and Land Resource, College of Environmental and Chemical Engineering, Zhaoqing University, Zhaoqing 526061, China
- Green Fine Chemical Joint Laboratory, Qingyuan 511542, China
| | - Zhihao Zeng
- School of Environmental and Chemical Engineering, Zhaoqing University, Zhaoqing 526061, China; (J.C.); (Z.Z.); (C.L.); (X.W.); (S.L.); (F.Y.); (C.L.)
| | - Can Liu
- School of Environmental and Chemical Engineering, Zhaoqing University, Zhaoqing 526061, China; (J.C.); (Z.Z.); (C.L.); (X.W.); (S.L.); (F.Y.); (C.L.)
| | - Xuan Wang
- School of Environmental and Chemical Engineering, Zhaoqing University, Zhaoqing 526061, China; (J.C.); (Z.Z.); (C.L.); (X.W.); (S.L.); (F.Y.); (C.L.)
| | - Shiting Li
- School of Environmental and Chemical Engineering, Zhaoqing University, Zhaoqing 526061, China; (J.C.); (Z.Z.); (C.L.); (X.W.); (S.L.); (F.Y.); (C.L.)
| | - Feihua Ye
- School of Environmental and Chemical Engineering, Zhaoqing University, Zhaoqing 526061, China; (J.C.); (Z.Z.); (C.L.); (X.W.); (S.L.); (F.Y.); (C.L.)
- Guangdong Provincial Key Laboratory of Environmental Health and Land Resource, College of Environmental and Chemical Engineering, Zhaoqing University, Zhaoqing 526061, China
- Green Fine Chemical Joint Laboratory, Qingyuan 511542, China
| | - Chunsheng Li
- School of Environmental and Chemical Engineering, Zhaoqing University, Zhaoqing 526061, China; (J.C.); (Z.Z.); (C.L.); (X.W.); (S.L.); (F.Y.); (C.L.)
- Guangdong Provincial Key Laboratory of Environmental Health and Land Resource, College of Environmental and Chemical Engineering, Zhaoqing University, Zhaoqing 526061, China
- Green Fine Chemical Joint Laboratory, Qingyuan 511542, China
| | - Xiaoxiao Guan
- China Electronic Product Reliability and Environmental Testing Research Institute, Guangzhou 511370, China
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17
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Luo Y, Geng Z, Zhang W, He J, Yang R. Strategy for Constructing Phosphorus-Based Flame-Retarded Polyurethane Elastomers for Advanced Performance in Long-Term. Polymers (Basel) 2023; 15:3711. [PMID: 37765565 PMCID: PMC10537912 DOI: 10.3390/polym15183711] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2023] [Revised: 08/30/2023] [Accepted: 09/01/2023] [Indexed: 09/29/2023] Open
Abstract
Polyurethane elastomer (PUE), which is widely used in coatings for construction, transportation, electronics, aerospace, and other fields, has excellent physical properties. However, polyurethane elastomers are flammable, which limits their daily use, so the flame retardancy of polyurethane elastomers is very important. Reactive flame retardants have the advantages of little influence on the physical properties of polymers and low tendency to migrate out. Due to the remarkable needs of non-halogenated flame retardants, phosphorus flame retardant has gradually stood out as the main alternative. In this review, we focus on the fire safety of PUE and provide a detailed overview of the current molecular design and mechanisms of reactive phosphorus-containing, as well as P-N synergistic, flame retardants in PUE. From the structural characteristics, several basic aspects of PUE are overviewed, including thermal performance, combustion performance, and mechanical properties. In addition, the perspectives on the future advancement of phosphorus-containing flame-retarded polyurethane elastomers (PUE) are also discussed. Based on the past research, this study provides prospects for the application of flame-retarded PUE in the fields of self-healing materials, bio-based materials, wearable electronic devices, and solid-state electrolytes.
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Affiliation(s)
| | - Zhishuai Geng
- National Engineering Technology Research Center of Flame Retardant Materials, School of Materials Science & Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Wenchao Zhang
- National Engineering Technology Research Center of Flame Retardant Materials, School of Materials Science & Engineering, Beijing Institute of Technology, Beijing 100081, China
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18
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Sousa RPCL, Figueira RB, Callone E, Dirè S, Costa SPG, Raposo MMM. Amino-Alcohol Organic-Inorganic Hybrid Sol-Gel Materials Based on an Epoxy Bicyclic Silane: Synthesis and Characterization. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:2429. [PMID: 37686937 PMCID: PMC10490488 DOI: 10.3390/nano13172429] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Revised: 08/21/2023] [Accepted: 08/24/2023] [Indexed: 09/10/2023]
Abstract
Organic-inorganic hybrids (OIHs) are a type of material that can be obtained using the sol-gel process and has the advantages of organic and inorganic moieties in a single material. Polyetheramines have been widely used in the preparation of this type of material, particularly in combination with epoxy-based alkoxysilanes. Nevertheless, epoxyciclohexylethyltrimethoxysilane (ECHETMS) is a promising alkoxysilane with an epoxy terminal group that is quite unexplored. In this work, four novel OIH materials were synthesized using the sol-gel method. The OIHs were based on Jeffamines® of different molecular weights (D-230, D-400, ED-600, and ED-900), together with ECHETMS. The materials were characterized using multinuclear solid state NMR, FTIR, BET, UV/Vis spectroscopy, EIS, and TGA. The influence of the Jeffamine molecular weight and the suitability of these materials to act as a supporting matrix for heteroaromatic probes were assessed and discussed. The materials show interesting properties in order to be applied in a wide range of sensing applications.
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Affiliation(s)
- Rui P. C. L. Sousa
- Centre of Chemistry, University of Minho, Campus of Gualtar, 4710-057 Braga, Portugal; (R.P.C.L.S.); (S.P.G.C.)
| | - Rita B. Figueira
- Centre of Chemistry, University of Minho, Campus of Gualtar, 4710-057 Braga, Portugal; (R.P.C.L.S.); (S.P.G.C.)
| | - Emanuela Callone
- “Klaus Müller” NMR Laboratory, Department of Industrial Engineering, University of Trento, Via Sommarive, 9, 38123 Trento, Italy; (E.C.); (S.D.)
| | - Sandra Dirè
- “Klaus Müller” NMR Laboratory, Department of Industrial Engineering, University of Trento, Via Sommarive, 9, 38123 Trento, Italy; (E.C.); (S.D.)
| | - Susana P. G. Costa
- Centre of Chemistry, University of Minho, Campus of Gualtar, 4710-057 Braga, Portugal; (R.P.C.L.S.); (S.P.G.C.)
| | - Maria Manuela M. Raposo
- Centre of Chemistry, University of Minho, Campus of Gualtar, 4710-057 Braga, Portugal; (R.P.C.L.S.); (S.P.G.C.)
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19
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Slabejová G, Vidholdová Z, Šmidriaková M. Effect of Two Different Ageing Exposures on the Colour Stability of Transparent Polyurethane Finishing. Polymers (Basel) 2023; 15:3313. [PMID: 37571207 PMCID: PMC10422424 DOI: 10.3390/polym15153313] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 07/27/2023] [Accepted: 08/03/2023] [Indexed: 08/13/2023] Open
Abstract
This paper deals with the influence of dark and light exposure on the colour change of a transparent two-component polyurethane surface finish. The surface finish with polyacrylic and aldehyde resin was applied to the surfaces of untreated and hydrothermally treated European beech, alder, Norway maple, and Paper birch wood. The test specimens were deposited indoors for 60 days. The colour values (lightness L*, redness + a*, yellowness + b*, chroma C*, hue angle h°) were expressed in the CIELAB system. The results showed that the colour difference of the finish surfaces of all hydrothermally treated wood species was 27-50% lower after the dark than when exposed to light. In the case of finished untreated wood, the colour difference was 51-73% lower after the dark than light exposure. Only the finished untreated and hydrothermally treated Norway maple wood surfaces showed similar and significant changes after both dark and light exposure. The lower value of the colour difference of the finished hydrothermally treated wood was due to the fact that steaming wood with saturated water steam has a positive effect on the overall colour stability of the finish and partial resistance to the initiation of photolytic reactions caused by light.
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Affiliation(s)
- Gabriela Slabejová
- Faculty of Wood Sciences and Technology, Department of Furniture and Wood Products, Technical University in Zvolen, 960 01 Zvolen, Slovakia; (G.S.); (M.Š.)
| | - Zuzana Vidholdová
- Faculty of Wood Sciences and Technology, Department of Wood Technology, Technical University in Zvolen, Masaryka 24, 960 01 Zvolen, Slovakia
| | - Mária Šmidriaková
- Faculty of Wood Sciences and Technology, Department of Furniture and Wood Products, Technical University in Zvolen, 960 01 Zvolen, Slovakia; (G.S.); (M.Š.)
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20
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Wang X, Xu J, Zhang Y, Wang T, Wang Q, Li S, Yang Z, Zhang X. A stretchable, mechanically robust polymer exhibiting shape-memory-assisted self-healing and clustering-triggered emission. Nat Commun 2023; 14:4712. [PMID: 37543695 PMCID: PMC10404225 DOI: 10.1038/s41467-023-40340-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Accepted: 07/25/2023] [Indexed: 08/07/2023] Open
Abstract
Self-healing and recyclable polymer materials are being developed through extensive investigations on noncovalent bond interactions. However, they typically exhibit inferior mechanical properties. Therefore, the present study is aimed at synthesizing a polyurethane-urea elastomer with excellent mechanical properties and shape-memory-assisted self-healing behavior. In particular, the introduction of coordination and hydrogen bonds into elastomer leads to the optimal elastomer exhibiting good mechanical properties (strength, 76.37 MPa; elongation at break, 839.10%; toughness, 308.63 MJ m-3) owing to the phased energy dissipation mechanism involving various supramolecular interactions. The elastomer also demonstrates shape-memory properties, whereby the shape recovery force that brings damaged surfaces closer and facilitates self-healing. Surprisingly, all specimens exhibite clustering-triggered emission, with cyan fluorescence is observed under ultraviolet light. The strategy reported herein for developing multifunctional materials with good mechanical properties can be leveraged to yield stimulus-responsive polymers and smart seals.
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Affiliation(s)
- Xiaoyue Wang
- Key Laboratory of Science and Technology on Wear and Protection of Materials, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Jing Xu
- Key Laboratory of Science and Technology on Wear and Protection of Materials, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yaoming Zhang
- Key Laboratory of Science and Technology on Wear and Protection of Materials, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000, China
| | - Tingmei Wang
- Key Laboratory of Science and Technology on Wear and Protection of Materials, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Qihua Wang
- Key Laboratory of Science and Technology on Wear and Protection of Materials, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, China
- State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000, China
| | - Song Li
- Key Laboratory of Science and Technology on Wear and Protection of Materials, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000, China.
| | - Zenghui Yang
- Key Laboratory of Science and Technology on Wear and Protection of Materials, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000, China.
| | - Xinrui Zhang
- Key Laboratory of Science and Technology on Wear and Protection of Materials, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000, China.
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21
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Filippova OV, Maksimkin AV, Dayyoub T, Larionov DI, Telyshev DV. Sustainable Elastomers for Actuators: "Green" Synthetic Approaches and Material Properties. Polymers (Basel) 2023; 15:2755. [PMID: 37376401 DOI: 10.3390/polym15122755] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Revised: 06/09/2023] [Accepted: 06/16/2023] [Indexed: 06/29/2023] Open
Abstract
Elastomeric materials have great application potential in actuator design and soft robot development. The most common elastomers used for these purposes are polyurethanes, silicones, and acrylic elastomers due to their outstanding physical, mechanical, and electrical properties. Currently, these types of polymers are produced by traditional synthetic methods, which may be harmful to the environment and hazardous to human health. The development of new synthetic routes using green chemistry principles is an important step to reduce the ecological footprint and create more sustainable biocompatible materials. Another promising trend is the synthesis of other types of elastomers from renewable bioresources, such as terpenes, lignin, chitin, various bio-oils, etc. The aim of this review is to address existing approaches to the synthesis of elastomers using "green" chemistry methods, compare the properties of sustainable elastomers with the properties of materials produced by traditional methods, and analyze the feasibility of said sustainable elastomers for the development of actuators. Finally, the advantages and challenges of existing "green" methods of elastomer synthesis will be summarized, along with an estimation of future development prospects.
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Affiliation(s)
- Olga V Filippova
- Institute for Bionic Technologies and Engineering, I.M. Sechenov First Moscow State Medical University (Sechenov University), Bolshaya Pirogovskaya Street 2-4, 119991 Moscow, Russia
| | - Aleksey V Maksimkin
- Institute for Bionic Technologies and Engineering, I.M. Sechenov First Moscow State Medical University (Sechenov University), Bolshaya Pirogovskaya Street 2-4, 119991 Moscow, Russia
| | - Tarek Dayyoub
- Institute for Bionic Technologies and Engineering, I.M. Sechenov First Moscow State Medical University (Sechenov University), Bolshaya Pirogovskaya Street 2-4, 119991 Moscow, Russia
- Department of Physical Chemistry, National University of Science and Technology "MISIS", 119049 Moscow, Russia
| | - Dmitry I Larionov
- Institute for Bionic Technologies and Engineering, I.M. Sechenov First Moscow State Medical University (Sechenov University), Bolshaya Pirogovskaya Street 2-4, 119991 Moscow, Russia
| | - Dmitry V Telyshev
- Institute for Bionic Technologies and Engineering, I.M. Sechenov First Moscow State Medical University (Sechenov University), Bolshaya Pirogovskaya Street 2-4, 119991 Moscow, Russia
- Institute of Biomedical Systems, National Research University of Electronic Technology, Zelenograd, 124498 Moscow, Russia
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22
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Salgado C, Cue R, Yuste V, Montalvillo-Jiménez L, Prendes P, Paz S, Vázquez-Calvo Á, Alcamí A, García C, Martínez-Campos E, Bosch P. Clear polyurethane coatings with excellent virucidal properties: Preparation, characterization and rapid inactivation of human coronaviruses 229E and SARS-CoV-2. APPLIED MATERIALS TODAY 2023; 32:101828. [PMID: 37317691 PMCID: PMC10147448 DOI: 10.1016/j.apmt.2023.101828] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Revised: 04/11/2023] [Accepted: 04/14/2023] [Indexed: 06/16/2023]
Abstract
Commercial polyurethane (PU) coating formulations have been modified with 1-(hydroxymethyl)-5,5-dimethylhydantoin (HMD) both in bulk (0.5 and 1% w/w) and onto the coatings surface as an N-halamine precursor, to obtain clear coatings with high virucidal activity. Upon immersion in diluted chlorine bleaching, the hydantoin structure on the grafted PU membranes was transformed into N-halamine groups, with a high surface chlorine concentration (40-43μg/cm2). Fourier transform infrared spectroscopy (FTIR) spectroscopy, thermogravimetric analysis (TGA), energy-dispersive X-ray (EDX), X-ray photoelectron spectroscopy (XPS) and iodometric titration were used to characterize the coatings and quantify the chlorine contents of the PU membranes after chlorination. Biological evaluation of their activity against Staphylococcus aureus (Gram-positive bacteria) and human coronaviruses HCoV-229E and SARS-CoV-2 was performed, and high inactivation of these pathogens was observed after short contact times. The inactivation of HCoV-229E was higher than 98% for all modified samples after just 30 minutes, whereas it was necessary 12 hours of contact time for complete inactivation of SARS-CoV-2. The coatings were fully rechargeable by immersion in diluted chlorine bleach (2% v/v) for at least 5 chlorination-dechlorination cycles. Moreover, the performance of the antivirus efficiency of the coatings is considered as long-lasting, because experiments of reinfection of the coatings with HCoV-229E coronavirus did not show any loss of the virucidal activity after three consecutive infection cycles without reactivation of the N-halamine groups.
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Affiliation(s)
- Cástor Salgado
- Instituto de Ciencia y Tecnología de Polímeros, ICTP-CSIC, Department of Applied Macromolecular Chemistry, Juan de la Cierva 3, Madrid, 28006, Spain
| | - Raquel Cue
- Instituto de Ciencia y Tecnología de Polímeros, ICTP-CSIC, Department of Applied Macromolecular Chemistry, Juan de la Cierva 3, Madrid, 28006, Spain
- Grupo de Síntesis Orgánica y Bioevaluación, Instituto Pluridisciplinar (UCM), Unidad Asociada al ICTP, IQM (CSIC), Paseo de Juan XXIII 1, 28040 Madrid, Spain
| | - Vanesa Yuste
- Instituto de Ciencia y Tecnología de Polímeros, ICTP-CSIC, Department of Applied Macromolecular Chemistry, Juan de la Cierva 3, Madrid, 28006, Spain
| | - Laura Montalvillo-Jiménez
- Instituto de Ciencia y Tecnología de Polímeros, ICTP-CSIC, Department of Applied Macromolecular Chemistry, Juan de la Cierva 3, Madrid, 28006, Spain
| | - Pilar Prendes
- GAIRESA, Lugar Outeiro 8, 15551 Valdoviño, A Coruña, Spain
| | - Senén Paz
- GAIRESA, Lugar Outeiro 8, 15551 Valdoviño, A Coruña, Spain
| | - Ángela Vázquez-Calvo
- Centro de Biología Molecular Severo Ochoa (CSIC-UAM), Nicolás Cabrera 1, 28049, Madrid, Spain
| | - Antonio Alcamí
- Centro de Biología Molecular Severo Ochoa (CSIC-UAM), Nicolás Cabrera 1, 28049, Madrid, Spain
| | - Carolina García
- Instituto de Ciencia y Tecnología de Polímeros, ICTP-CSIC, Department of Applied Macromolecular Chemistry, Juan de la Cierva 3, Madrid, 28006, Spain
| | - Enrique Martínez-Campos
- Instituto de Ciencia y Tecnología de Polímeros, ICTP-CSIC, Department of Applied Macromolecular Chemistry, Juan de la Cierva 3, Madrid, 28006, Spain
- Grupo de Síntesis Orgánica y Bioevaluación, Instituto Pluridisciplinar (UCM), Unidad Asociada al ICTP, IQM (CSIC), Paseo de Juan XXIII 1, 28040 Madrid, Spain
| | - Paula Bosch
- Instituto de Ciencia y Tecnología de Polímeros, ICTP-CSIC, Department of Applied Macromolecular Chemistry, Juan de la Cierva 3, Madrid, 28006, Spain
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23
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Gradinaru LM, Bercea M, Lupu A, Gradinaru VR. Development of Polyurethane/Peptide-Based Carriers with Self-Healing Properties. Polymers (Basel) 2023; 15:polym15071697. [PMID: 37050311 PMCID: PMC10096672 DOI: 10.3390/polym15071697] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Revised: 03/24/2023] [Accepted: 03/27/2023] [Indexed: 03/30/2023] Open
Abstract
In situ-forming gels with self-assembling and self-healing properties are materials of high interest for various biomedical applications, especially for drug delivery systems and tissue regeneration. The main goal of this research was the development of an innovative gel carrier based on dynamic inter- and intramolecular interactions between amphiphilic polyurethane and peptide structures. The polyurethane architecture was adapted to achieve the desired amphiphilicity for self-assembly into an aqueous solution and to facilitate an array of connections with peptides through physical interactions, such as hydrophobic interactions, dipole-dipole, electrostatic, π–π stacking, or hydrogen bonds. The mechanism of the gelation process and the macromolecular conformation in water were evaluated with DLS, ATR-FTIR, and rheological measurements at room and body temperatures. The DLS measurements revealed a bimodal distribution of small (~30–40 nm) and large (~300–400 nm) hydrodynamic diameters of micelles/aggregates at 25 °C for all samples. The increase in the peptide content led to a monomodal distribution of the peaks at 37 °C (~25 nm for the sample with the highest content of peptide). The sol–gel transition occurs very quickly for all samples (within 20–30 s), but the equilibrium state of the gel structure is reached after 1 h in absence of peptide and required more time as the content of peptide increases. Moreover, this system presented self-healing properties, as was revealed by rheological measurements. In the presence of peptide, the structure recovery after each cycle of deformation is a time-dependent process, the recovery is complete after about 300 s. Thus, the addition of the peptide enhanced the polymer chain entanglement through intermolecular interactions, leading to the preparation of a well-defined gel carrier. Undoubtedly, this type of polyurethane/peptide-based carrier, displaying a sol–gel transition at a biologically relevant temperature and enhanced viscoelastic properties, is of great interest in the development of medical devices for minimally invasive procedures or precision medicine.
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24
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Zhou Y, Zhang J, Huang J. Dynamic Propagation Depth in Substrate-Supported Polymer Films: A Molecular Dynamics Simulation. Macromolecules 2023. [DOI: 10.1021/acs.macromol.2c02539] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/15/2023]
Affiliation(s)
- Yun Zhou
- Department of Chemistry, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Jin Zhang
- Department of Chemistry, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Jianhua Huang
- Department of Chemistry, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou 310018, China
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Wu Y, Wang T, Gao J, Zhang L, Fay JDB, Hirth S, Hankett J, Chen Z. Molecular Behavior of 1K Polyurethane Adhesive at Buried Interfaces: Plasma Treatment, Annealing, and Adhesion. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:3273-3285. [PMID: 36808974 DOI: 10.1021/acs.langmuir.2c03084] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
One-part (1K) polyurethane (PU) adhesive has excellent bulk strength and environmental resistance. It is therefore widely used in many fields, such as construction, transportation, and flexible lamination. However, when contacting non-polar polymer materials, the poor adhesion of 1K PU adhesive may not be able to support its outdoor applications. To solve this problem, plasma treatment of the non-polar polymer surface has been utilized to improve adhesion between the polymer and 1K PU adhesive. The detailed mechanisms of adhesion enhancement of the 1K PU adhesive caused by plasma treatment on polymer substrates have not been studied extensively because adhesion is a property of buried interfaces which are difficult to probe. In this study, sum frequency generation (SFG) vibrational spectroscopy was used to investigate the buried PU/polypropylene (PP) interfaces in situ nondestructively. Fourier-transform infrared spectroscopy, the X-ray diffraction technique, and adhesion tests were used as supplemental methods to SFG in the study. The 1K PU adhesive is a moisture-curing adhesive and usually needs several days to be fully cured. Here, time-dependent SFG experiments were conducted to monitor the molecular behaviors at the buried 1K PU adhesive/PP interfaces during the curing process. It was found that the PU adhesives underwent rearrangement during the curing process with functional groups gradually becoming ordered at the interface. Stronger adhesion between the plasma-treated PP substrate and the 1K PU adhesive was observed, which was achieved by the interfacial chemical reactions and a more rigid interface. Annealing the samples increased the reaction speed and enhanced the bulk PU strength with higher crystallinity. In this research, molecular mechanisms of adhesion enhancement of the 1K PU adhesive caused by the plasma treatment on PP and by annealing the PU/PP samples were elucidated.
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Affiliation(s)
- Yuchen Wu
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109, United States
- Department of Macromolecular Science and Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Tianle Wang
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Jinpeng Gao
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Lu Zhang
- BASF Corporation, 1609 Biddle Avenue, Wyandotte, Michigan 48192, United States
| | - Jonathan D B Fay
- BASF Corporation, 1609 Biddle Avenue, Wyandotte, Michigan 48192, United States
| | - Sabine Hirth
- BASF SE, RAA/OS-B007, Carl-Bosch-Strasse 38, 67056 Ludwigshafen am Rhein, Germany
| | - Jeanne Hankett
- BASF Corporation, 1609 Biddle Avenue, Wyandotte, Michigan 48192, United States
| | - Zhan Chen
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109, United States
- Department of Macromolecular Science and Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States
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Morado EG, Paterson ML, Ivanoff DG, Wang HC, Johnson A, Daniels D, Rizvi A, Sottos NR, Zimmerman SC. End-of-life upcycling of polyurethanes using a room temperature, mechanism-based degradation. Nat Chem 2023; 15:569-577. [PMID: 36864144 DOI: 10.1038/s41557-023-01151-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Accepted: 01/31/2023] [Indexed: 03/04/2023]
Abstract
A major challenge in developing recyclable polymeric materials is the inherent conflict between the properties required during and after their life span. In particular, materials must be strong and durable when in use, but undergo complete and rapid degradation, ideally under mild conditions, as they approach the end of their life span. We report a mechanism for degrading polymers called cyclization-triggered chain cleavage (CATCH cleavage) that achieves this duality. CATCH cleavage features a simple glycerol-based acyclic acetal unit as a kinetic and thermodynamic trap for gated chain shattering. Thus, an organic acid induces transient chain breaks with oxocarbenium ion formation and subsequent intramolecular cyclization to fully depolymerize the polymer backbone at room temperature. With minimal chemical modification, the resulting degradation products from a polyurethane elastomer can be repurposed into strong adhesives and photochromic coatings, demonstrating the potential for upcycling. The CATCH cleavage strategy for low-energy input breakdown and subsequent upcycling may be generalizable to a broader range of synthetic polymers and their end-of-life waste streams.
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Affiliation(s)
- Ephraim G Morado
- Department of Chemistry, University of Illinois Urbana-Champaign, Urbana, IL, USA
| | - Mara L Paterson
- Department of Chemistry, University of Illinois Urbana-Champaign, Urbana, IL, USA
| | - Douglas G Ivanoff
- Department of Materials Science and Engineering, University of Illinois Urbana-Champaign, Urbana, IL, USA.,Beckman Institute for Advanced Science and Technology, University of Illinois Urbana-Champaign, Urbana, IL, USA
| | - Hsuan-Chin Wang
- Department of Chemistry, University of Illinois Urbana-Champaign, Urbana, IL, USA
| | - Alayna Johnson
- Department of Chemistry, University of Illinois Urbana-Champaign, Urbana, IL, USA
| | - Darius Daniels
- Department of Chemistry, University of Illinois Urbana-Champaign, Urbana, IL, USA
| | - Aoon Rizvi
- Department of Chemistry, University of Illinois Urbana-Champaign, Urbana, IL, USA
| | - Nancy R Sottos
- Department of Materials Science and Engineering, University of Illinois Urbana-Champaign, Urbana, IL, USA.,Beckman Institute for Advanced Science and Technology, University of Illinois Urbana-Champaign, Urbana, IL, USA
| | - Steven C Zimmerman
- Department of Chemistry, University of Illinois Urbana-Champaign, Urbana, IL, USA. .,Department of Chemistry, Ben-Gurion University of the Negev, Beer Sheva, Israel.
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27
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Lin J, Fan Y, Hutchinson DJ, Malkoch M. Soft Hydroxyapatite Composites Based on Triazine-Trione Systems as Potential Biomedical Engineering Frameworks. ACS APPLIED MATERIALS & INTERFACES 2023; 15:7329-7339. [PMID: 36695708 PMCID: PMC9923673 DOI: 10.1021/acsami.2c16235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Accepted: 01/09/2023] [Indexed: 06/17/2023]
Abstract
Composites of triazine-trione (TATO) thiol-ene networks and hydroxyapatite (HA) have shown great potential as topological fixation materials for complex bone fractures due to their high flexural modulus, biocompatibility, and insusceptibility to forming soft-tissue adhesions. However, the rigid mechanical properties of these composites make them unsuitable for applications requiring softness. The scope of these materials could therefore be widened by the design of new TATO monomers that would lead to composites with a range of mechanical properties. In this work, four novel TATO-based monomers, decorated with either ester or amide linkages as well as alkene or alkyne end groups, have been proposed and synthesized via fluoride-promoted esterification (FPE) chemistry. The ester-modified monomers were then successfully formulated along with the thiol TATO monomer tris [2-(3-mercaptopropionyloxy)ethyl] isocyanurate (TEMPIC) and HA to give soft composites, following the established photo-initiated thiol-ene coupling (TEC) or thiol-yne coupling (TYC) chemistry methodologies. The most promising composite shows excellent softness, with a flexural modulus of 57 (2) MPa and εf at maximum σf of 11.8 (0.3)%, which are 117 and 10 times softer than the previously developed system containing the commercially available tri-allyl TATO monomer (TATATO). Meanwhile, the surgically convenient viscosity of the composite resins and their excellent cytotoxicity profile allow them to be used in the construction of soft objects in a variety of shapes through drop-casting suitable for biomedical applications.
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28
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Legrand S, Kabir R, Kärkkäinen A. New Phenanthrenyl‐Substituted Hybrid Organic‐Inorganic Polysiloxanes for Optoelectronic Applications. ChemistrySelect 2023. [DOI: 10.1002/slct.202204271] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
| | - Rakib Kabir
- Optitune Oy Tutkijankuja 5 90590 Oulu Finland
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Effect of Aromatic Chain Extenders on Polyurea and Polyurethane Coatings Designed for Defense Applications. Polymers (Basel) 2023; 15:polym15030756. [PMID: 36772057 PMCID: PMC9920908 DOI: 10.3390/polym15030756] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Revised: 01/28/2023] [Accepted: 01/30/2023] [Indexed: 02/05/2023] Open
Abstract
The present work describes the synthesis of new versatile polyurea (PU) and polyurethane (PUR) matrices, including different chain extenders, which facilitate the design of distinct, tunable properties, and high-performance derivatives. These polymers can be used for various defense and security applications, such as coatings for ballistic protection, CBRN protection, binders for energetic formulations, etc. Combining aliphatic and aromatic molecules in PU or PUR structures enables the synthesis of polymers with improved and controllable thermo-mechanical properties. Thus, for polyurea synthesis, we utilized two types of polymeric aliphatic diamines and three types of aromatic chain extenders (1,1'-biphenyl-4,4'-diamine, benzene-1,2-diamine, and 1,2-diphenylhydrazine). An analogous method was used to synthesize polyurethane films by employing one polymeric aliphatic polyol and three types of aromatic chain extenders (benzene-1,3-diol, benzene-1,4-diol, and benzene-1,2,3-triol). Subsequently, various analytic techniques (Fourier transform infrared spectroscopy-attenuated total reflectance (FTIR-ATR), single cantilever dynamic mechanical analysis (DMA), thermogravimetric analysis (TGA), frequency-dependent shear modulus survey, tensile tests, water contact angle measurements, and scanning electron microscopy (SEM) with energy-dispersive X-ray analysis (EDX)) have been utilized to characterize the synthesized materials and to evaluate the influence of each chain extender on their final properties.
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30
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dos Santos Silva ID, Albuquerque A, Boskamp L, Ries A, Haag K, Koschek K, Wellen R. Synthesis of bio‐polyurethanes with isosorbide and propanediol based poly(lactic acid) diol. J Appl Polym Sci 2023. [DOI: 10.1002/app.53623] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Ingridy Dayane dos Santos Silva
- Academic Unit of Materials Engineering Federal University of Campina Grande Campina Grande Brazil
- Fraunhofer Institute for Environmental, Safety and Energy Technology UMSICHT Oberhausen Germany
| | - Ananda Albuquerque
- Academic Unit of Materials Engineering Federal University of Campina Grande Campina Grande Brazil
| | - Laura Boskamp
- Department Polymeric Materials and Mechanical Engineering Fraunhofer Institute for Manufacturing Technology and Advanced Materials Bremen Germany
| | - Andreas Ries
- Multidisciplinary Center for Technological Investigations National University of Asunción, San Lorenzo University Campus San Lorenzo Paraguay
| | - Katharina Haag
- Department Polymeric Materials and Mechanical Engineering Fraunhofer Institute for Manufacturing Technology and Advanced Materials Bremen Germany
| | - Katharina Koschek
- Department Polymeric Materials and Mechanical Engineering Fraunhofer Institute for Manufacturing Technology and Advanced Materials Bremen Germany
| | - Renate Wellen
- Academic Unit of Materials Engineering Federal University of Campina Grande Campina Grande Brazil
- Materials Engineering Department Federal University of Paraiba João Pessoa Brazil
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31
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Tzelepis DA, Suzuki J, Su YF, Wang Y, Lim YC, Zayernouri M, Ginzburg VV. Experimental and modeling studies of
IPDI
‐based polyurea elastomers – The role of hard segment fraction. J Appl Polym Sci 2023. [DOI: 10.1002/app.53592] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Demetrios A. Tzelepis
- Chemical Engineering and Materials Science Department Michigan State University East Lansing Michigan USA
- Materials Division US‐Army, Ground Vehicle System Center Warren Michigan USA
| | - Jorge Suzuki
- Department of Mechanical Engineering Michigan State University East Lansing Michigan USA
- Department of Simulation, Technology Center Division Microvast Power Solutions, Inc. Lake Mary Florida USA
| | - Yi Feng Su
- Materials Science and Technology Division Oak Ridge National Laboratory Oak Ridge Tennessee USA
| | - Yiyu Wang
- Materials Science and Technology Division Oak Ridge National Laboratory Oak Ridge Tennessee USA
| | - Yong Chae Lim
- Materials Science and Technology Division Oak Ridge National Laboratory Oak Ridge Tennessee USA
| | - Mohsen Zayernouri
- Department of Mechanical Engineering Michigan State University East Lansing Michigan USA
- Department of Statistics and Probability Michigan State University East Lansing Michigan USA
| | - Valeriy V. Ginzburg
- Chemical Engineering and Materials Science Department Michigan State University East Lansing Michigan USA
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32
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Mouren A, Avérous L. Sustainable cycloaliphatic polyurethanes: from synthesis to applications. Chem Soc Rev 2023; 52:277-317. [PMID: 36520183 DOI: 10.1039/d2cs00509c] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Polyurethanes (PUs) are a versatile and major polymer family, mainly produced via polyaddition between polyols and polyisocyanates. A large variety of fossil-based building blocks is commonly used to develop a wide range of macromolecular architectures with specific properties. Due to environmental concerns, legislation, rarefaction of some petrol fractions and price fluctuation, sustainable feedstocks are attracting significant attention, e.g., plastic waste and biobased resources from biomass. Consequently, various sustainable building blocks are available to develop new renewable macromolecular architectures such as aromatics, linear aliphatics and cycloaliphatics. Meanwhile, the relationship between the chemical structures of these building blocks and properties of the final PUs can be determined. For instance, aromatic building blocks are remarkable to endow materials with rigidity, hydrophobicity, fire resistance, chemical and thermal stability, whereas acyclic aliphatics endow them with oxidation and UV light resistance, flexibility and transparency. Cycloaliphatics are very interesting as they combine most of the advantages of linear aliphatic and aromatic compounds. This original and unique review presents a comprehensive overview of the synthesis of sustainable cycloaliphatic PUs using various renewable products such as biobased terpenes, carbohydrates, fatty acids and cholesterol and/or plastic waste. Herein, we summarize the chemical modification of the main sustainable cycloaliphatic feedstocks, synthesis of PUs using these building blocks and their corresponding properties and subsequently present their major applications in hot-topic fields, including building, transportation, packaging and biomedicine.
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Affiliation(s)
- Agathe Mouren
- BioTeam/ICPEES-ECPM, UMR CNRS 7515, Université de Strasbourg, 25 rue Becquerel, 67087 Strasbourg Cedex 2, France.
| | - Luc Avérous
- BioTeam/ICPEES-ECPM, UMR CNRS 7515, Université de Strasbourg, 25 rue Becquerel, 67087 Strasbourg Cedex 2, France.
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33
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Cruz JA, Amico SC, Bianchi O. Effect of the aramid pulp on the physicochemical, viscoelastic properties and rheokinetics of polyurethanes. JOURNAL OF POLYMER RESEARCH 2023. [DOI: 10.1007/s10965-022-03393-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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34
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Kuttykattil A, Raju S, Vanka KS, Bhagwat G, Carbery M, Vincent SGT, Raja S, Palanisami T. Consuming microplastics? Investigation of commercial salts as a source of microplastics (MPs) in diet. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:930-942. [PMID: 35907067 PMCID: PMC9813175 DOI: 10.1007/s11356-022-22101-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Accepted: 07/14/2022] [Indexed: 06/15/2023]
Abstract
The omnipresence of microplastics (MPs) in marine and terrestrial environments as a pollutant of concern is well established and widely discussed in the literature. However, studies on MP contamination in commercial food sources like salts from the terrestrial environment are scarce. Thus, this is the first study to investigate various varieties of Australian commercial salts (both terrestrial and marine salts) as a source of MPs in the human diet, and the first to detect MPs in black salt. Using Nile red dye, the MPs were detected and counted under light microscopy, further characterised using attenuated total reflectance Fourier transformed infrared spectroscopy (ATR-FTIR) and scanning electron microscopy and energy-dispersive X-ray spectroscopy (SEM-EDS). Of all the 90 suspected particles, 78.8% were identified as MPs with a size ranging between 23.2 µm and 3.9 mm. The fibres and fragments constituted 75.78% and 24.22% respectively. Among the tested samples, Himalayan pink salt (coarse) from terrestrial sources was found to have the highest MP load, i.e. 174.04 ± 25.05 (SD) particle/kg, followed by black salt at 157.41 ± 23.13 particle/kg. The average concentration of detected MPs in Australian commercial salts is 85.19 ± 63.04 (SD) per kg. Polyamide (33.8%) and polyurethane (30.98%) were the dominant MP types. Considering the maximum recommended (World Health Organization) salt uptake by adults daily at 5 g, we interpret that an average person living in Australia may be ingesting approximately 155.47 MPs/year from salt uptake. Overall, MP contamination was higher in terrestrial salts (such as black and Himalayan salt) than the marine salt. In conclusion, we highlight those commercial salts used in our daily lives serve as sources of MPs in the diet, with unknown effects on human health.
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Affiliation(s)
- Aswin Kuttykattil
- Environmental Plastics Innovation Cluster (EPIC), Global Innovative Centre for Advanced Nanomaterial (GICAN), The University of Newcastle, Callaghan, Newcastle, NSW, 2308, Australia
| | - Subash Raju
- Environmental Plastics Innovation Cluster (EPIC), Global Innovative Centre for Advanced Nanomaterial (GICAN), The University of Newcastle, Callaghan, Newcastle, NSW, 2308, Australia
| | - Kanth Swaroop Vanka
- Environmental Plastics Innovation Cluster (EPIC), Global Innovative Centre for Advanced Nanomaterial (GICAN), The University of Newcastle, Callaghan, Newcastle, NSW, 2308, Australia
- School of Biomedical Sciences and Pharmacy, The University of Newcastle/Priority Research Centre for Healthy Lungs, Hunter Medical Research Institute, The University of Newcastle, Newcastle, NSW, Australia
| | - Geetika Bhagwat
- Environmental Plastics Innovation Cluster (EPIC), Global Innovative Centre for Advanced Nanomaterial (GICAN), The University of Newcastle, Callaghan, Newcastle, NSW, 2308, Australia
| | - Maddison Carbery
- Environmental Plastics Innovation Cluster (EPIC), Global Innovative Centre for Advanced Nanomaterial (GICAN), The University of Newcastle, Callaghan, Newcastle, NSW, 2308, Australia
| | - Salom Gnana Thanga Vincent
- Environmental Plastics Innovation Cluster (EPIC), Global Innovative Centre for Advanced Nanomaterial (GICAN), The University of Newcastle, Callaghan, Newcastle, NSW, 2308, Australia
- Department of Environmental Sciences, University of Kerala, Kerala, India
| | - Sudhakaran Raja
- Aquaculture Biotechnology Laboratory, School of Bio-Sciences and Technology, Vellore Institute of Technology, Vellore, India
| | - Thava Palanisami
- Environmental Plastics Innovation Cluster (EPIC), Global Innovative Centre for Advanced Nanomaterial (GICAN), The University of Newcastle, Callaghan, Newcastle, NSW, 2308, Australia.
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Guo Y, Luo W, Zhang J, Hu W. Dynamic Monte Carlo Simulations of Strain-Induced Crystallization in Multiblock Copolymers: Effects of Asymmetric Block Rigidity. J Phys Chem B 2022; 126:10768-10775. [PMID: 36502404 DOI: 10.1021/acs.jpcb.2c06827] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Thermoplastic elastomers such as polyether-b-polyamides (or -polyesters), polyurethanes (or with -urea) and olefin block copolymers are commonly processed through a stretching process for achieving high elasticity and high toughness in their products, while the size diversity of semicrystalline microdomains of hard blocks appears as the key factor. By means of dynamic Monte Carlo simulations of strain-induced crystallization of locally concentrated and diluted crystallizable blocks alternatingly connected with noncrystallizable blocks in diblock and tetrablock copolymers, we have studied the size diversity of semicrystalline microdomains presumably raised by local concentration fluctuations of crystallizable blocks and found the dilution effects to persist from diblock to tetrablock copolymers. In the present work, we continued to study the effects of asymmetric block rigidity between crystallizable and noncrystallizable blocks on strain-induced crystallization of concentrated and diluted crystallizable blocks in diblock copolymers. The results showed that when crystallizable blocks hold higher thermodynamic rigidity than noncrystallizable blocks, the large semicrystalline domains become larger and the small semicrystalline domains become more, enhancing their size diversity. However, asymmetric kinetic rigidity has little effect. Our observations imply that industrial stretching processing could enhance the toughness of semicrystalline thermoplastic elastomers when their crystallizable blocks hold a higher thermodynamic rigidity relative to noncrystallizable blocks. Our integrated approach paved the way for a better understanding of the structure-property relationship in thermoplastic elastomers.
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Affiliation(s)
- Yaqian Guo
- School of Chemistry and Chemical Engineering, State Key Lab of Coordinate Chemistry, Nanjing University, Nanjing210023, China
| | - Wen Luo
- School of Chemistry and Chemical Engineering, State Key Lab of Coordinate Chemistry, Nanjing University, Nanjing210023, China
| | - Jiang Zhang
- School of Chemistry and Chemical Engineering, State Key Lab of Coordinate Chemistry, Nanjing University, Nanjing210023, China
| | - Wenbing Hu
- School of Chemistry and Chemical Engineering, State Key Lab of Coordinate Chemistry, Nanjing University, Nanjing210023, China
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Çınar M, Karataş S. Synthesis of polyurethane acrylate hybrids containing fluorine and siloxane by the sol–gel method for UV-curable coatings. Polym Bull (Berl) 2022. [DOI: 10.1007/s00289-022-04619-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Wong AR, Barrera M, Pal A, Lamb JR. Improved Characterization of Polyoxazolidinones by Incorporating Solubilizing Side Chains. Macromolecules 2022. [DOI: 10.1021/acs.macromol.2c02104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/08/2022]
Affiliation(s)
- Allison R. Wong
- Department of Chemistry, University of Minnesota─Twin Cities, 207 Pleasant Street SE, Minneapolis, Minnesota55455, United States
| | - Melissa Barrera
- Department of Chemistry, University of Minnesota─Twin Cities, 207 Pleasant Street SE, Minneapolis, Minnesota55455, United States
| | - Arpan Pal
- Department of Chemistry, University of Minnesota─Twin Cities, 207 Pleasant Street SE, Minneapolis, Minnesota55455, United States
| | - Jessica R. Lamb
- Department of Chemistry, University of Minnesota─Twin Cities, 207 Pleasant Street SE, Minneapolis, Minnesota55455, United States
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Muhammed Raji A, Hambali HU, Khan ZI, Binti Mohamad Z, Azman H, Ogabi R. Emerging trends in flame retardancy of rigid polyurethane foam and its composites: A review. J CELL PLAST 2022. [DOI: 10.1177/0021955x221144564] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
Abstract
Owing to the superior thermal insulating attributes of rigid polyurethane foam (RPUF) compared to other insulating materials (expanded and extruded polystyrene, mineral wool), it remains the most dominant insulating material and most studied polymer foam. Like other polyurethane foam, RPUF is highly flammable, necessitating the incorporation of flame retardants (FR) during production to lower combustibility, promoting its continuous use as insulation material in construction, transportation, and others. The popular approaches for correcting the high flammability of RPUF are copolymerization and blending (with FR). The second method has proven to be most effective as there are limited trade-offs in RPUF properties. Meanwhile, the high flammability of RPUF is still a significant hindrance in emerging applications (sensors, space travel, and others), and this has continuously inspired research in the flame retardancy of RPUF. In this study, properties, and preparation methods of RPUF are described, factors responsible for the high flammability of PUF are discussed, and flame retardancy of RPUF is thoroughly reviewed. Notably, most FR for RPUF are inorganic nanoparticles, lignin, intumescent FR systems of expandable graphite (EG), ammonium polyphosphate (APP), and hybridized APP or EG with other FR. These could be due to their ease of processing, low cost, and being environmentally benign. Elaborate discussion on RPUF FR mechanisms were also highlighted. Lastly, a summary and future perspectives in fireproofing RPUF are provided, which could inspire the design of new FR for RPUF.
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Affiliation(s)
- Abdulwasiu Muhammed Raji
- Enhanced Polymer Research Group, School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, Johor Bahru, Malaysia
- Department of Bioprocess and Polymer Engineering, School of Chemical and Energy Engineering, Universiti Teknologi Malaysia, Skudai, Malaysia
- Department of Polymer and Textile Technology, Yaba College of Technology, Lagos, Nigeria
| | - Hambali Umar Hambali
- Department of Chemical Engineering, Faculty of Engineering and Technology, University of Ilorin, Ilorin, Nigeria
| | - Zahid Iqbal Khan
- Enhanced Polymer Research Group, School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, Johor Bahru, Malaysia
| | - Zurina Binti Mohamad
- Enhanced Polymer Research Group, School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, Johor Bahru, Malaysia
- Department of Bioprocess and Polymer Engineering, School of Chemical and Energy Engineering, Universiti Teknologi Malaysia, Skudai, Malaysia
| | - Hassan Azman
- Enhanced Polymer Research Group, School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, Johor Bahru, Malaysia
- Department of Bioprocess and Polymer Engineering, School of Chemical and Energy Engineering, Universiti Teknologi Malaysia, Skudai, Malaysia
| | - Raphael Ogabi
- INSA Center Val de Loire, University Orleans, Bourges, France
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Jeong H, Ryu S, Kim YN, Ha YM, Tewari C, Kim SY, Kim JK, Jung YC. Easy, Fast Self-Heating Polyurethane Nanocomposite with the Introduction of Thermally Annealed Carbon Nanotubes Using Near-Infrared Lased Irradiation. MATERIALS (BASEL, SWITZERLAND) 2022; 15:ma15238463. [PMID: 36499964 PMCID: PMC9740191 DOI: 10.3390/ma15238463] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Revised: 11/17/2022] [Accepted: 11/24/2022] [Indexed: 05/20/2023]
Abstract
In this study, high-crystallinity single walled carbon nanotubes (H-SWNTs) were prepared by high-temperature thermal annealing at 1800 °C and a self-heating shape memory polyurethane nanocomposite with excellent self-heating characteristics was developed within a few seconds by irradiation with near-infrared rays. With a simple method (heat treatment), impurities at the surface of H-SWNTs were removed and at the same time the amorphous structure converted into a crystalline structure, improving crystallinity. Therefore, high conductivity (electric, thermal) and interfacial affinity with PU were increased, resulting in improved mechanical, thermal and electric properties. The electrical conductivity of neat polyurethane was enhanced from ~10-11 S/cm to 4.72 × 10-8 S/cm, 1.07 × 10-6 and 4.66 × 10-6 S/cm, while the thermal conductivity was enhanced up to 60% from 0.21 W/mK, 0.265 W/mK and 0.338 W/mK for the composites of 1, 3 and 5 wt%, respectively. Further, to achieve an effective photothermal effect, H-SWNTs were selected as nanofillers to reduce energy loss while increasing light-absorption efficiency. Thereafter, near-infrared rays of 818 nm were directly irradiated onto the nanocomposite film to induce photothermal properties arising from the local surface plasmon resonance effect on the CNT surface. A self-heating shape memory composite material that rapidly heated to 270 °C within 1 min was developed, even when only 3 wt.% of H-SWNTs were added. The results of this study can be used to guide the development of heat-generating coating materials and de-icing materials for the wing and body structures of automobiles or airplanes, depending on the molding method.
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Affiliation(s)
- Hyunsung Jeong
- Institute of Advanced Composite Materials, Korea Institute of Science and Technology (KIST), 92 Chudong-ro, Bongdong-eup, Wanju-gun 55324, Republic of Korea
- School of Chemical Engineering Building, Sungkyunkwan University, II2066 Seobu-ro, Jangan-gu, Suwon 16419, Republic of Korea
| | - Sooyeon Ryu
- Institute of Advanced Composite Materials, Korea Institute of Science and Technology (KIST), 92 Chudong-ro, Bongdong-eup, Wanju-gun 55324, Republic of Korea
- Carbon Materials and Engineering, Jeonbuk National University, Baekje-daero, Deokjin-gu, Jeonju-si 54896, Republic of Korea
| | - Young Nam Kim
- Institute of Advanced Composite Materials, Korea Institute of Science and Technology (KIST), 92 Chudong-ro, Bongdong-eup, Wanju-gun 55324, Republic of Korea
| | - Yu-Mi Ha
- Advanced Materials Division, Korea Research Institute of Chemical Technology (KRICT), 141 Gajeong-Ro, Yuseong-gu, Daejeon 34114, Republic of Korea
| | - Chetna Tewari
- Institute of Advanced Composite Materials, Korea Institute of Science and Technology (KIST), 92 Chudong-ro, Bongdong-eup, Wanju-gun 55324, Republic of Korea
| | - Seong Yun Kim
- Carbon Materials and Engineering, Jeonbuk National University, Baekje-daero, Deokjin-gu, Jeonju-si 54896, Republic of Korea
| | - Jung Kyu Kim
- School of Chemical Engineering Building, Sungkyunkwan University, II2066 Seobu-ro, Jangan-gu, Suwon 16419, Republic of Korea
| | - Yong Chae Jung
- Institute of Advanced Composite Materials, Korea Institute of Science and Technology (KIST), 92 Chudong-ro, Bongdong-eup, Wanju-gun 55324, Republic of Korea
- Correspondence: ; Tel.: +82-63-219-8153
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Castor Oil-Based Polyurethane/S2 Glass/Aramid Hybrid Composites Manufactured by Vacuum Infusion. Polymers (Basel) 2022; 14:polym14235150. [PMID: 36501544 PMCID: PMC9738653 DOI: 10.3390/polym14235150] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2022] [Revised: 11/22/2022] [Accepted: 11/23/2022] [Indexed: 11/30/2022] Open
Abstract
This study evaluates the hybridization effect of S2-glass/aramid on polyurethane (PU) composites produced by vacuum infusion. Different laminates were produced with similar thickness (around 2.5 mm), using, as reinforcement, only aramid fabrics (five layers, named as K5) or only S2-glass fabrics (eight layers, named as G8). Furthermore, hybridization was obtained by manufacturing symmetrical hybrid inter-ply laminates, with four S2-glass layers and two of aramid, (G2K)S and (KG2)S. The mechanical response of the laminates was evaluated in tensile, interlaminar shear strength, dynamical mechanical analysis and quasi-static indentation tests, and related to their morphological characteristics. The main results show that the pure glass composites presented less voids, but a higher density as well as higher tensile stiffness and strength. The aramid laminates showed a high capability for absorbing impact energy (ca. 30% higher than the pure glass laminates), and the hybrid laminates had intermediate properties. More importantly, this work shows the possibility of using a polyurethane matrix for vacuum infusion processing, effective even for aramid/S2-glass hybrid composites with thermoset polyurethane resin. This study is therefore promising for impact absorption in applications such as protective armor. The studied hybrid laminate may display a suitable set of properties and greater energy absorption capability and penetration resistance for impact applications.
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Suthar V, Asare MA, de Souza FM, Gupta RK. Effect of Graphene Oxide and Reduced Graphene Oxide on the Properties of Sunflower Oil-Based Polyurethane Films. Polymers (Basel) 2022; 14:polym14224974. [PMID: 36433101 PMCID: PMC9699627 DOI: 10.3390/polym14224974] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Revised: 11/12/2022] [Accepted: 11/15/2022] [Indexed: 11/18/2022] Open
Abstract
Sunflower oil was used for the synthesis of a polyol via an epoxidation reaction followed by a ring-opening reaction. The successful synthesis of the sunflower oil-based polyol (SFO polyol) was demonstrated through structural characterizations and wet-chemistry analysis. Bio-based polyurethane (BPU) films were fabricated using synthesized polyol and diisocyanate. Various amounts of graphene oxide (GO) and reduced graphene oxide (rGO) were added separately to see their effect on the physicomechanical and thermal properties of BPU films. Several tests, such as thermogravimetric analysis, tensile strength, dynamic mechanical analysis, hardness, flexural strength, and the water contact angle, were performed to evaluate the effect of GO and rGO on the properties of the BPU films. Some of the analyses of the BPU films demonstrated an improvement in the mechanical properties, for example, the tensile strength increased from 22.5 to 26 MPa with the addition of only 0.05 wt.% GO. The storage modulus improved from 900 to 1000 and 1700 MPa after the addition of 0.02 and 0.05 wt.% GO, respectively. This study shows that a small amount of GO and rGO could improve the properties of BPU films, making them suitable for use in coating industries.
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Affiliation(s)
- Vishwa Suthar
- Department of Chemistry, Pittsburg State University, 1701 S. Broadway Street, Pittsburg, KS 66762, USA
- National Institute for Materials Advancement, Pittsburg State University, 1204 Research Road, Pittsburg, KS 66762, USA
| | - Magdalene A. Asare
- Department of Chemistry, Pittsburg State University, 1701 S. Broadway Street, Pittsburg, KS 66762, USA
- National Institute for Materials Advancement, Pittsburg State University, 1204 Research Road, Pittsburg, KS 66762, USA
| | - Felipe M. de Souza
- National Institute for Materials Advancement, Pittsburg State University, 1204 Research Road, Pittsburg, KS 66762, USA
| | - Ram K. Gupta
- Department of Chemistry, Pittsburg State University, 1701 S. Broadway Street, Pittsburg, KS 66762, USA
- National Institute for Materials Advancement, Pittsburg State University, 1204 Research Road, Pittsburg, KS 66762, USA
- Correspondence:
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42
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He Z, Xian W, Ding Z, Wang C, Huang Z, Song L, Liu B. Synthesis of novel propylene carbonate diol(PCD)and application in CO2-based polyols waterborne polyurethane. JOURNAL OF POLYMER RESEARCH 2022. [DOI: 10.1007/s10965-022-03288-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/10/2022]
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43
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Chen Q, Ye J, Zhu L, Luo J, Cao X, Zhang Z. Organocatalytic multicomponent polymerization of bis(aziridine)s, diols, and tosyl isocyanate toward poly(sulfonamide urethane)s. Eur Polym J 2022. [DOI: 10.1016/j.eurpolymj.2022.111585] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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44
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Recent advances in surface modification of plasma electrolytic oxidation coatings treated by non-biodegradable polymers. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.120091] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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45
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Zhou L, Zhang L, Li P, Maitz MF, Wang K, Shang T, Dai S, Fu Y, Zhao Y, Yang Z, Wang J, Li X. Adhesive and Self-Healing Polyurethanes with Tunable Multifunctionality. RESEARCH 2022; 2022:9795682. [PMID: 36349335 PMCID: PMC9639449 DOI: 10.34133/2022/9795682] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Accepted: 09/05/2022] [Indexed: 11/25/2022]
Abstract
Many polyurethanes (PUs) are blood-contacting materials due to their good mechanical properties, fatigue resistance, cytocompatibility, biosafety, and relatively good hemocompatibility. Further functionalization of the PUs using chemical synthetic methods is especially attractive for expanding their applications. Herein, a series of catechol functionalized PU (C-PU-PTMEG) elastomers containing variable molecular weight of polytetramethylene ether glycol (PTMEG) soft segment are reported by stepwise polymerization and further introduction of catechol. Tailoring the molecular weight of PTMEG fragment enables a regulable catechol content, mobility of the chain segment, hydrogen bond and microphase separation of the C-PU-PTMEG elastomers, thus offering tunability of mechanical strength (such as breaking strength from 1.3 MPa to 5.7 MPa), adhesion, self-healing efficiency (from 14.9% to 96.7% within 2 hours), anticoagulant, antioxidation, anti-inflammatory properties and cellular growth behavior. As cardiovascular stent coatings, the C-PU-PTMEGs demonstrate enough flexibility to withstand deformation during the balloon dilation procedure. Of special importance is that the C-PU-PTMEG-coated surfaces show the ability to rapidly scavenge free radicals to maintain normal growth of endothelial cells, inhibit smooth muscle cell proliferation, mediate inflammatory response, and reduce thrombus formation. With the universality of surface adhesion and tunable multifunctionality, these novel C-PU-PTMEG elastomers should find potential usage in artificial heart valves and surface engineering of stents.
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Affiliation(s)
- Lei Zhou
- School of Materials Science and Engineering, Southwest Jiaotong University, Department of Cardiology, Third People’s Hospital of Chengdu Affiliated to Southwest Jiaotong University, Chengdu, 610031 Sichuan, China
| | - Lu Zhang
- School of Materials Science and Engineering, Southwest Jiaotong University, Department of Cardiology, Third People’s Hospital of Chengdu Affiliated to Southwest Jiaotong University, Chengdu, 610031 Sichuan, China
| | - Peichuang Li
- Heze Branch, Qilu University of Technology (Shandong Academy of Sciences), Biological Engineering Technology Innovation Center of Shandong Province, Heze 274000, China
| | - Manfred F. Maitz
- School of Materials Science and Engineering, Southwest Jiaotong University, Department of Cardiology, Third People’s Hospital of Chengdu Affiliated to Southwest Jiaotong University, Chengdu, 610031 Sichuan, China
- Max Bergmann Center of Biomaterials Dresden, Leibniz Institute of Polymer Research Dresden, Hohe Strasse 6, 01069 Dresden, Germany
| | - Kebing Wang
- School of Materials Science and Engineering, Southwest Jiaotong University, Department of Cardiology, Third People’s Hospital of Chengdu Affiliated to Southwest Jiaotong University, Chengdu, 610031 Sichuan, China
| | - Tengda Shang
- School of Materials Science and Engineering, Southwest Jiaotong University, Department of Cardiology, Third People’s Hospital of Chengdu Affiliated to Southwest Jiaotong University, Chengdu, 610031 Sichuan, China
| | - Sheng Dai
- School of Materials Science and Engineering, Southwest Jiaotong University, Department of Cardiology, Third People’s Hospital of Chengdu Affiliated to Southwest Jiaotong University, Chengdu, 610031 Sichuan, China
| | - Yudie Fu
- School of Materials Science and Engineering, Southwest Jiaotong University, Department of Cardiology, Third People’s Hospital of Chengdu Affiliated to Southwest Jiaotong University, Chengdu, 610031 Sichuan, China
| | - Yuancong Zhao
- School of Materials Science and Engineering, Southwest Jiaotong University, Department of Cardiology, Third People’s Hospital of Chengdu Affiliated to Southwest Jiaotong University, Chengdu, 610031 Sichuan, China
| | - Zhilu Yang
- Affiliated Dongguan Hospital, Southern Medical University, Dongguan, Guangdong 523059, China
- Guangdong Provincial Key Laboratory of Cardiac Function and Microcirculation, Guangzhou, Guangdong 510080, China
| | - Jin Wang
- School of Materials Science and Engineering, Southwest Jiaotong University, Department of Cardiology, Third People’s Hospital of Chengdu Affiliated to Southwest Jiaotong University, Chengdu, 610031 Sichuan, China
| | - Xin Li
- School of Materials Science and Engineering, Southwest Jiaotong University, Department of Cardiology, Third People’s Hospital of Chengdu Affiliated to Southwest Jiaotong University, Chengdu, 610031 Sichuan, China
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Effect of the type of anionic center on the characteristics of eco-friendly waterborne polyurethane/acrylate hybrids. MONATSHEFTE FUR CHEMIE 2022. [DOI: 10.1007/s00706-022-02996-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Olszewski A, Kosmela P, Żukowska W, Wojtasz P, Szczepański M, Barczewski M, Zedler Ł, Formela K, Hejna A. Insights into Stoichiometry Adjustments Governing the Performance of Flexible Foamed Polyurethane/Ground Tire Rubber Composites. Polymers (Basel) 2022; 14:polym14183838. [PMID: 36145981 PMCID: PMC9503757 DOI: 10.3390/polym14183838] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2022] [Revised: 09/07/2022] [Accepted: 09/09/2022] [Indexed: 11/16/2022] Open
Abstract
Polyurethanes (PU) are widely applied in the industry due to their tunable performance adjusted by changes in the isocyanate index—stoichiometric balance between isocyanate and hydroxyl groups. This balance is affected by the incorporation of modifiers of fillers into the PU matrix and is especially crucial for PU foams due to the additional role of isocyanates—foaming of the material. Despite the awareness of the issue underlined in research works, the contribution of additives into formulations is often omitted, adversely impacting foams’ performance. Herein, flexible foamed PU/ground tire rubber (GTR) composites containing 12 different types of modified GTR particles differing by hydroxyl value (LOH) (from 45.05 to 88.49 mg KOH/g) were prepared. The impact of GTR functionalities on the mechanical, thermomechanical, and thermal performance of composites prepared with and without considering the LOH of fillers was assessed. Formulation adjustments induced changes in tensile strength (92–218% of the initial value), elongation at break (78–100%), tensile toughness (100–185%), compressive strength (156–343%), and compressive toughness (166–310%) proportional to the shift of glass transition temperatures (3.4–12.3 °C) caused by the additional isocyanates’ reactions yielding structure stiffening. On the other hand, formulation adjustments reduced composites’ thermal degradation onset due to the inferior thermal stability of hard segments compared to soft segments. Generally, changes in the composites’ performance resulting from formulation adjustments were proportional to the hydroxyl values of GTR, justifying the applied approach.
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Affiliation(s)
- Adam Olszewski
- Department of Polymer Technology, Gdańsk University of Technology, Narutowicza 11/12, 80-233 Gdańsk, Poland
| | - Paulina Kosmela
- Department of Polymer Technology, Gdańsk University of Technology, Narutowicza 11/12, 80-233 Gdańsk, Poland
| | - Wiktoria Żukowska
- Department of Polymer Technology, Gdańsk University of Technology, Narutowicza 11/12, 80-233 Gdańsk, Poland
| | - Paweł Wojtasz
- Department of Polymer Technology, Gdańsk University of Technology, Narutowicza 11/12, 80-233 Gdańsk, Poland
| | - Mariusz Szczepański
- Department of Polymer Technology, Gdańsk University of Technology, Narutowicza 11/12, 80-233 Gdańsk, Poland
| | - Mateusz Barczewski
- Institute of Materials Technology, Poznan University of Technology, Piotrowo 3, 61-138 Poznan, Poland
| | - Łukasz Zedler
- Department of Molecular Biotechnology and Microbiology, Gdańsk University of Technology, Narutowicza 11/12, 80-233 Gdańsk, Poland
| | - Krzysztof Formela
- Department of Polymer Technology, Gdańsk University of Technology, Narutowicza 11/12, 80-233 Gdańsk, Poland
| | - Aleksander Hejna
- Department of Polymer Technology, Gdańsk University of Technology, Narutowicza 11/12, 80-233 Gdańsk, Poland
- Correspondence:
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1H T1ρ based ROSY: NMR spectral fingerprints for nanoscale phase separated structure of block copolymers. CHEMICAL PAPERS 2022. [DOI: 10.1007/s11696-022-02441-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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49
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Piao X, Guo H, Cao Y, Wang Z, Jin C. Preparation and exploration of multifunctional wood coating based on an interpenetrating network system of CO2-polyurethane and natural bio-based benzoxazine. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.129437] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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50
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Piao X, Guo H, Cao Y, Wang Z, Jin C. Exploration of multifunctional wood coating based on an interpenetrating network system of rosin-CO 2-based polyurethane and mussel bionic rosin-based benzoxazine. J Mater Chem B 2022; 10:6939-6945. [PMID: 36040715 DOI: 10.1039/d2tb01535h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Polyurethane (PU) prepared by blending rosin base and CO2-polyol already has good mechanical properties and hydrophobic effect and has powerful benefits in acid and alkali resistance and salt resistance. In this study, mussel bionic rosin-based benzoxazine (BZ) was synthesized using dehydroabietylamine, catechol, and paraformaldehyde. Mixing BZ into PU can endow the resulting PU/BZ with special effects such as zero curing shrinkage, excellent mechanical behavior, and flame retardancy through a 3D interpenetrating network system. From the results, the modulus of rupture (MOR) and modulus of elasticity (MOE) of PU wood coatings are 97.04 and 2601.97 MPa, respectively; in contrast, the PU/BZ wood coatings exhibited higher values of MOR and MOE of 110.87 and 2738.11 MPa. PU/BZ wood coatings show higher flexural strength and elastic modulus. They are also stronger than PU coatings in terms of acid/alkali and aging resistance. At the same time, the coating is endowed with flame retardant properties, and the LOI is 30.2 due to the presence of BZ. Thus, PU/BZ can be a versatile and practical wood coating. The interpenetrating network system of PU/BZ has an innovative impact on the preparation of wood coatings.
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Affiliation(s)
- Xixi Piao
- College of Chemistry and Materials Engineering, Zhejiang A & F University, Hangzhou, 311300, P. R. China.
| | - Hanxiang Guo
- College of Chemistry and Materials Engineering, Zhejiang A & F University, Hangzhou, 311300, P. R. China.
| | - Yizhong Cao
- College of Chemistry and Materials Engineering, Zhejiang A & F University, Hangzhou, 311300, P. R. China.
| | - Zhe Wang
- College of Chemistry and Materials Engineering, Zhejiang A & F University, Hangzhou, 311300, P. R. China.
| | - Chunde Jin
- College of Chemistry and Materials Engineering, Zhejiang A & F University, Hangzhou, 311300, P. R. China.
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