1
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Huang P, Nie Q, Tang Y, Chen S, He K, Cao M, Wang Z. A novel nerol-segmented waterborne polyurethane coating for the prevention of dental erosion. RSC Adv 2024; 14:16228-16239. [PMID: 38769955 PMCID: PMC11103564 DOI: 10.1039/d4ra01744g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2024] [Accepted: 05/10/2024] [Indexed: 05/22/2024] Open
Abstract
Dental erosion is a common problem in dentistry, and it refers to the chronic pathological loss of dental hard tissues due to nonbacterially produced acids, primarily caused by the exposure of teeth to exogenous acids. Dietary factors play a pivotal part in the pathogenesis of dental erosion, with a high intake of acidic beverages leading to an increased prevalence of dental erosion in adolescents. Fluoride is mainly used in clinical practice to prevent dental erosion. However, long-term fluoride intake may lead to chronic fluorosis symptoms caused by fluoride overdose. Nano-coatings on dental surfaces have become a popular area of research in dental materials in recent years. The objective of this study was to develop a novel nerol-segmented waterborne polyurethane nano-coating to protect teeth from direct contact with an acidic environment and to provide a safe, effective method for preventing dental acid erosion.
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Affiliation(s)
- Peipei Huang
- College of Stomatology, Hangzhou Normal University Hangzhou 310000 China
- Department of Medicine, Lishui University Lishui 323000 China
| | - Qiongfang Nie
- Department of Chemistry, Lishui University Lishui 323000 China
| | - Yu Tang
- Department of Chemistry, Lishui University Lishui 323000 China
| | - Shunshun Chen
- Department of Chemistry, Lishui University Lishui 323000 China
| | - Kaiyuan He
- Department of Chemistry, Lishui University Lishui 323000 China
| | - Mingguo Cao
- College of Stomatology, Hangzhou Normal University Hangzhou 310000 China
- Department of Medicine, Lishui University Lishui 323000 China
| | - Zefeng Wang
- Department of Chemistry, Lishui University Lishui 323000 China
- R&D Center of Green Manufacturing New Materials and Technology of Synthetic Leather, Sichuan University, Lishui University Lishui 323000 China
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2
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Li G, Duan B, Leng G, Liu J, Zhang T, Lu Z, Wang S, Qu J. Preparation of Yellowing-Resistant Waterborne Polyurethane Modified with Disulfide Bonds. Molecules 2024; 29:2099. [PMID: 38731590 PMCID: PMC11085269 DOI: 10.3390/molecules29092099] [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: 03/09/2024] [Revised: 04/19/2024] [Accepted: 04/23/2024] [Indexed: 05/13/2024] Open
Abstract
Waterborne polyurethane, renowned for its lightweight properties, excellent insulation capabilities, and corrosion resistance, has found extensive application in fields such as construction, automotive, leather, and thermal insulation. Nevertheless, during operational usage, waterborne polyurethane materials, akin to other polymeric substances, are susceptible to oxidative aging manifestations like yellowing, cracking, and diminished mechanical performance, significantly curtailing their utility. Consequently, the synthesis of yellowing-resistant polyurethane assumes pivotal significance. This study integrates dynamic reversible reactions into the synthesis process of polyurethane by introducing the dynamic reversible compound 2-hydroxyethyl disulfide as a chain extender, alongside the incorporation of a UV absorber to enhance the polyurethane's resistance to yellowing. When the disulfide bonds absorb heat, they undergo cleavage, yielding thiols that spontaneously recombine into disulfide bonds at ambient temperatures, allowing for the continuous breaking and reformation of disulfide bonds to absorb heat. Concurrently, in collaboration with the UV absorber, the detrimental effects of ultraviolet radiation on the polyurethane material are mitigated, thereby augmenting its resistance to yellowing. This study scrutinizes the positioning of UV absorber addition, the quantity of UV absorber, and the molar ratio of 1,4-butanediol to 2-hydroxyethyl disulfide, characterizing the functional groups of polyurethane through infrared and Raman spectroscopy. It is observed that the successful preparation of yellowing-resistant polyurethane is achieved, and evaluations on the modified polyurethane through color difference, tensile, and centrifugal tests reveal that the optimal yellowing resistance is attained by adding a UV absorber at a mass fraction of 1% to 3% prior to chain extension, resulting in a color change grade of 2, denoting slight discoloration. Simultaneously, the other properties of polyurethane exhibit relative stability. Notably, when the molar ratio of 1,4-butanediol to 2-hydroxyethyl disulfide is 3:2, the overall performance of the polyurethane remains stable, with exceptional yellowing resistance capabilities attaining a color change grade of 2.
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Affiliation(s)
- Guorong Li
- School of Pharmacy, Binzhou Medical University, Yantai 264003, China;
- Research Center for Leather and Protein, College of Chemistry & Chemical Engineering, Yantai University, Yantai 264005, China; (B.D.); (T.Z.); (Z.L.)
| | - Baorong Duan
- Research Center for Leather and Protein, College of Chemistry & Chemical Engineering, Yantai University, Yantai 264005, China; (B.D.); (T.Z.); (Z.L.)
| | - Guorui Leng
- School of Special Education and Rehabilitation, Binzhou Medical University, Yantai 264003, China;
| | - Junjie Liu
- Department of Physics, Binzhou Medical University, Yantai 264003, China;
| | - Tong Zhang
- Research Center for Leather and Protein, College of Chemistry & Chemical Engineering, Yantai University, Yantai 264005, China; (B.D.); (T.Z.); (Z.L.)
| | - Zhenwei Lu
- Research Center for Leather and Protein, College of Chemistry & Chemical Engineering, Yantai University, Yantai 264005, China; (B.D.); (T.Z.); (Z.L.)
| | - Shanshan Wang
- School of Pharmacy, Binzhou Medical University, Yantai 264003, China;
| | - Jiale Qu
- School of Pharmacy, Binzhou Medical University, Yantai 264003, China;
- Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research (YIC), Chinese Academy of Sciences (CAS), Yantai 264003, China
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3
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Xiong Y, Xu Y, Lin B, He B, Gao B. Kirigami-inspired artificial spidroin microneedles for wound patches. Int J Biol Macromol 2024; 268:131838. [PMID: 38663709 DOI: 10.1016/j.ijbiomac.2024.131838] [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: 03/04/2024] [Revised: 04/20/2024] [Accepted: 04/22/2024] [Indexed: 04/29/2024]
Abstract
Intelligent wound management has important potential for promoting the recovery of chronic wounds caused by diabetes. Here, inspired by the field of kirigami, smart patterned high-stretch microneedle dressings (KPMDs) based on gene-modified spider silk proteins were developed to achieve sensitive biochemical and physiological sensing. The spider silk protein (spidroin) has excellent tensile properties, ductility, toughness and biocompatibility. Notably, the kirigami method-prepared kirigami structure of the spidroin MN dressing had a high tensile strength , while its ductility reached approximately 800 %. Moreover, the unique optical properties of photonic crystals allow for fluorescence enhancement, providing KPMD with color-sensitive properties suitable for wound management and clinical guidance. Furthermore, to improve the sensitivity of KPMD-s to motion monitoring, a microelectronic matrix was integrated on its surface. These distinct material properties suggest that this research lays the foundation for a new generation of high-performance biomimetic diatomaceous earth materials for application.
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Affiliation(s)
- Yongji Xiong
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, No. 30 Puzhu South Road, Nanjing, 211816, China
| | - Yue Xu
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, No. 30 Puzhu South Road, Nanjing, 211816, China
| | - Baoyang Lin
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, No. 30 Puzhu South Road, Nanjing, 211816, China
| | - Bingfang He
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, No. 30 Puzhu South Road, Nanjing, 211816, China; School of Pharmaceutical Sciences, Nanjing Tech University, No. 30 South Puzhu Road, Nanjing, 211816, China
| | - Bingbing Gao
- School of Pharmaceutical Sciences, Nanjing Tech University, No. 30 South Puzhu Road, Nanjing, 211816, China.
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4
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Zhang BY, Wu XK, Gao JA, Zhao H. Structured Cerium-Manganese Catalysts Supported on Nickel Foam for Toluene Oxidation by Electric Internal Heating. Chempluschem 2024; 89:e202300466. [PMID: 37902417 DOI: 10.1002/cplu.202300466] [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: 08/22/2023] [Revised: 10/26/2023] [Accepted: 10/30/2023] [Indexed: 10/31/2023]
Abstract
Structured catalysts are widely used in catalytic oxidation of gaseous pollutants, hot catalysis is usually needed to assist the reaction in the catalytic process. Herein, a Ce-modified manganese oxide octahedral molecular sieves (Ce-OMS-2) structured catalyst supported on foam nickel was prepared through impregnation process. A systematically quantitative testing on the toluene catalytic oxidation effectiveness of this structured catalyst was conducted through catalyst evaluation device, combining a series of characterization methods, such as XRD and SEM, the structure-activity relationship was established. Assisted with electric internal heating and ozone oxidation environments, this structured catalyst exhibits excellent catalytic oxidation performance for oxidative decomposition of toluene even under high humidity conditions. The results showed that the ozone-coupled structured nickel foam catalyst increased the decomposition efficiency of toluene from 25 % (without catalyst and heating) to 55 % (with catalyst and without heating) and the electric internal heating can significantly improve the reactivity and moisture resistance of the structured nickel-foam catalyst, at 90 % RH and 40000 h-1, 50000 ppb O3 and 40 mg/m3 toluene was maintained 100 % catalytic efficiency. The high-efficiency non-precious metal-based electrothermal catalyst prepared herein is expected to have certain enlightenment for the purification of VOCs.
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Affiliation(s)
- Bo Yu Zhang
- State Key laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, 100029, P.R. China
| | - Xiao-Kuan Wu
- State Key laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, 100029, P.R. China
| | - Jun An Gao
- State Key laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, 100029, P.R. China
| | - Hong Zhao
- State Key laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, 100029, P.R. China
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5
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Shi Z, Sheng Y, Wu J, Cui J, Lin W, Ngai T. Porous Waterborne Polyurethane Films Templated from Pickering Foams for Fabrication of Synthetic Leather. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:4751-4761. [PMID: 38385682 PMCID: PMC10919083 DOI: 10.1021/acs.langmuir.3c03514] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Revised: 02/06/2024] [Accepted: 02/07/2024] [Indexed: 02/23/2024]
Abstract
Waterborne polyurethane (WPU) latex nanoparticles with proven interfacial activity were utilized to stabilize air-water interfaces of Pickering foams through interfacial interaction with hydrophobic fumed silica particles (SPs). The rheological properties of the Pickering foam were tailored through adjustment of their SP content, which influenced their formability and stability. A Pickering foam stabilized with WPU and SPs was used as a template to prepare a WPU-SP composite porous film. The as-prepared film had intact open-cell porous structures, which increased its water absorption and water-vapor permeability. The porous film was used as a middle layer in the preparation of synthetic leather via a four-step "drying method". Compared with commercial synthetic leather, the lab-made synthetic leather with a middle layer made of the WPU-SP composite porous film exhibited a richer porous structure, acceptable wetting on a fabric substrate, a thicker porous layer, and higher water-vapor permeability. This work provides a novel and facile approach for preparing WPU-SP Pickering foams. Furthermore, the foams have the potential to function as a sustainable material for creating a porous-structured synthetic leather made from WPU, which may be utilized as an alternative to solvent-based synthetic leather.
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Affiliation(s)
- Zhenghao Shi
- Department
of Chemistry, The Chinese University of
Hong Kong, Shatin, Hong Kong 999077, China
| | - Yifeng Sheng
- Department
of Chemistry, The Chinese University of
Hong Kong, Shatin, Hong Kong 999077, China
| | - Jianhui Wu
- Department
of Biomass and Leather Engineering, Key Laboratory of Leather Chemistry
and Engineering of Ministry of Education, Sichuan University, Chengdu 610065, China
| | - Jiwei Cui
- Key
Laboratory of Colloid and Interface Chemistry of the Ministry of Education,
School of Chemistry and Chemical Engineering, Shandong University, Jinan, Shandong 250100, China
| | - Wei Lin
- Department
of Biomass and Leather Engineering, Key Laboratory of Leather Chemistry
and Engineering of Ministry of Education, Sichuan University, Chengdu 610065, China
| | - To Ngai
- Department
of Chemistry, The Chinese University of
Hong Kong, Shatin, Hong Kong 999077, China
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6
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Głowacka J, Derpeński Ł, Frydrych M, Sztorch B, Bartoszewicz B, Przekop RE. Robotization of Three-Point Bending Mechanical Tests Using PLA/TPU Blends as an Example in the 0-100% Range. MATERIALS (BASEL, SWITZERLAND) 2023; 16:6927. [PMID: 37959523 PMCID: PMC10650072 DOI: 10.3390/ma16216927] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2023] [Revised: 10/18/2023] [Accepted: 10/22/2023] [Indexed: 11/15/2023]
Abstract
This article presents the development of an automated three-point bending testing system using a robot to increase the efficiency and precision of measurements for PLA/TPU polymer blends as implementation high-throughput measurement methods. The system operates continuously and characterizes the flexural properties of PLA/TPU blends with varying TPU concentrations. This study aimed to determine the effect of TPU concentration on the strength and flexural stiffness, surface properties (WCA), thermal properties (TGA, DSC), and microscopic characterization of the studied blends.
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Affiliation(s)
- Julia Głowacka
- Centre for Advanced Technologies, Adam Mickiewicz University in Poznań, 10 Uniwersytetu Poznańskiego, 61-614 Poznań, Poland; (J.G.); (M.F.); (B.S.)
- Faculty of Chemistry, Adam Mickiewicz University in Poznań, 8 Uniwersytetu Poznańskiego, 61-614 Poznań, Poland
| | - Łukasz Derpeński
- Faculty of Mechanical Engineering, Bialystok University of Technology, 45C Wiejska, 15-351 Bialystok, Poland; (Ł.D.); (B.B.)
| | - Miłosz Frydrych
- Centre for Advanced Technologies, Adam Mickiewicz University in Poznań, 10 Uniwersytetu Poznańskiego, 61-614 Poznań, Poland; (J.G.); (M.F.); (B.S.)
- Faculty of Chemistry, Adam Mickiewicz University in Poznań, 8 Uniwersytetu Poznańskiego, 61-614 Poznań, Poland
| | - Bogna Sztorch
- Centre for Advanced Technologies, Adam Mickiewicz University in Poznań, 10 Uniwersytetu Poznańskiego, 61-614 Poznań, Poland; (J.G.); (M.F.); (B.S.)
| | - Błażej Bartoszewicz
- Faculty of Mechanical Engineering, Bialystok University of Technology, 45C Wiejska, 15-351 Bialystok, Poland; (Ł.D.); (B.B.)
| | - Robert E. Przekop
- Centre for Advanced Technologies, Adam Mickiewicz University in Poznań, 10 Uniwersytetu Poznańskiego, 61-614 Poznań, Poland; (J.G.); (M.F.); (B.S.)
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7
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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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8
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Rebane I, Priks H, Levin KJ, Sarigül İ, Mäeorg U, Johanson U, Piirimägi P, Tenson T, Tamm T. Microbial growth and adhesion of Escherichia coli in elastomeric silicone foams with commonly used additives. Sci Rep 2023; 13:8541. [PMID: 37237045 DOI: 10.1038/s41598-023-35239-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Accepted: 05/15/2023] [Indexed: 05/28/2023] Open
Abstract
Silicone is often used in environments where water repellency is an advantage. Contact with water promotes the adhesion of microorganisms and biofilm formation. Depending on the application, this may increase the possibility of food poisoning and infections, the material's degrading appearance, and the likelihood of manufacturing defects. The prevention of microbial adhesion and biofilm formation is also essential for silicone-based elastomeric foams, which are used in direct contact with human bodies but are often difficult to clean. In this study, the microbial attachment in and the retention from the pores of silicone foams of different compositions is described and compared to those of commonly used polyurethane foams. The growth of the gram-negative Escherichia coli in the pores and their leaching during wash cycles is characterised by bacterial growth/inhibition, adhesion assay, and SEM imaging. The structural and surface properties of the materials are compared. Despite using common antibacterial additives, we have found that non-soluble particles stay isolated in the silicone elastomer layer, thus affecting surface microroughness. Water-soluble tannic acid dissolves into the medium and seems to aid in inhibiting planktonic bacterial growth, with a clear indication of the availability of tannic acid on the surfaces of SIFs.
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Affiliation(s)
- Ingrid Rebane
- Institute of Technology, University of Tartu, Nooruse 1, 50411, Tartu, Estonia.
| | - Hans Priks
- Institute of Technology, University of Tartu, Nooruse 1, 50411, Tartu, Estonia
| | - Karl Jakob Levin
- Institute of Technology, University of Tartu, Nooruse 1, 50411, Tartu, Estonia
| | - İsmail Sarigül
- Institute of Technology, University of Tartu, Nooruse 1, 50411, Tartu, Estonia
| | - Uno Mäeorg
- Institute of Chemistry, University of Tartu, Ravila 14a, 50411, Tartu, Estonia
| | - Urmas Johanson
- Institute of Technology, University of Tartu, Nooruse 1, 50411, Tartu, Estonia
| | | | - Tanel Tenson
- Institute of Technology, University of Tartu, Nooruse 1, 50411, Tartu, Estonia
| | - Tarmo Tamm
- Institute of Technology, University of Tartu, Nooruse 1, 50411, Tartu, Estonia
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9
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Wang Y, Huang H. A Study on the Dye Fixation Mechanism of Waterborne Polyurethane. ChemistrySelect 2023. [DOI: 10.1002/slct.202204620] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/28/2023]
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10
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Ye X, Wang S, Zhou P, Zhang D, Zhu P. Fluorescent cellulose nanocrystals/waterborne polyurethane nanocomposites for anti-counterfeiting applications. Phys Chem Chem Phys 2023; 25:9492-9499. [PMID: 36938804 DOI: 10.1039/d3cp00654a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/10/2023]
Abstract
The development of eco-friendly anti-counterfeiting materials with high optical transparency and bright luminescence in the aggregate state is tremendously challenging. Herein, waterborne polyurethane/tetraphenylethylene-cellulose nanocrystal (WPU/TPE-CNC) nanocomposite aqueous solutions and films were prepared via direct blending aggregation-induced emission (AIE) active fluorescent CNCs (TPE-CNCs) with WPU and then applied in the anti-counterfeiting field. TPE-CNCs are compatible with WPU and dispersed homogeneously in the nanocomposite aqueous solutions and films. The thermal stability and mechanical properties of these films significantly improved with the increase in the content of TPE-CNCs. WPU/TPE-CNC nanocomposite films display high transparency (above 80%), excellent fluorescence properties, high mechanical strength, and good flexibility and then successfully applied to anti-counterfeit marking. Moreover, the dispersions of the aqueous WPU/TPE-CNC nanocomposite were nearly colorless and demonstrated promise as fluorescent anti-counterfeiting inks. This novel eco-friendly nanocomposite exhibited the potential for applications in anti-counterfeiting, fluorescent transparent paper and coating, fluorescent 3D printing, and optical/sensing devices.
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Affiliation(s)
- Xiu Ye
- Institute of Intelligent Manufacturing Technology, Shenzhen Polytechnic, Shenzhen 518055, China. .,Shenzhen Institutes of Advanced Electronic Materials, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China.
| | - Sai Wang
- Institute of Intelligent Manufacturing Technology, Shenzhen Polytechnic, Shenzhen 518055, China.
| | - Peng Zhou
- Institute of Intelligent Manufacturing Technology, Shenzhen Polytechnic, Shenzhen 518055, China.
| | - Dongyang Zhang
- Institute of Marine Biomedicine/Institute of Critical Materials for Integrated Circuits, Shenzhen Polytechnic, Shenzhen, 518055, China.
| | - Pengli Zhu
- Shenzhen Institutes of Advanced Electronic Materials, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China.
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11
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Rahimi A, Farhadian A, Guo L, Akbarinezhad E, Sharifi R, Iravani D, Asghar Javidparvar A, Deyab MA, Varfolomeev MA. Bio-based and self-catalyzed waterborne polyurethanes as efficient corrosion inhibitors for sour oilfield environment. J IND ENG CHEM 2023. [DOI: 10.1016/j.jiec.2023.03.033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023]
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12
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Liu J, Yang D, Li S, Bai C, Tu C, Zhu F, Xin W, Li G, Luo Y. Synthesis and characterization of hydroxyl-terminated polybutadiene modified low temperature adaptive self-matting waterborne polyurethane. RSC Adv 2023; 13:7020-7029. [PMID: 36874934 PMCID: PMC9977405 DOI: 10.1039/d3ra00412k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Accepted: 02/22/2023] [Indexed: 03/05/2023] Open
Abstract
Hydroxyl-terminated polybutadiene (HTPB) is a flexible telechelic compound with a main chain containing a slightly cross-linked activated carbon-carbon double bond and a hydroxyl group at the end. Therefore, in this paper, HTPB was used as a terminal diol prepolymer, and sulfonate AAS and carboxylic acid DMPA were used as hydrophilic chain extenders to prepare low-temperature adaptive self-matting waterborne polyurethane (WPU). Due to the fact that the non-polar butene chain in the HTPB prepolymer cannot form a hydrogen bond with the urethane group, and the solubility parameter difference between the hard segment formed by the urethane group is large, the gap of T g between the soft and hard segments of the WPU increases by nearly 10 °C, with more obvious microphase separation. At the same time, by adjusting the HTPB content, WPU emulsions with different particle sizes can be obtained, thereby obtaining WPU emulsions with good extinction properties and mechanical properties. The results show that HTPB-based WPU with a certain degree of microphase separation and roughness obtained by introducing a large number of non-polar carbon chains has good extinction ability, and the 60° glossiness can be as low as 0.4 GU. Meanwhile, the introduction of HTPB can improve the mechanical properties and low temperature flexibility of WPU. The T g,s (the glass transition temperature of soft segment) of WPU modified by the HTPB block decreased by 5.82 °C, and the ΔT g increased by 21.04 °C, indicating that the degree of microphase separation increased. At -50 °C, the elongation at break and tensile strength of WPU modified by HTPB can still maintain 785.2% and 76.7 MPa, which are 1.82 times and 2.91 times those of WPU with only PTMG as soft segment, respectively. The self-matting WPU coating prepared in this paper can meet the requirements of severe cold weather and has potential application prospects in the field of finishing.
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Affiliation(s)
| | | | | | | | | | | | - Wei Xin
- Beijing Institute of Technology China
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13
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Ha Z, Lei L, Zhou M, Xia Y, Chen X, Mao P, Fan B, Shi S. Bio-Based Waterborne Polyurethane Coatings with High Transparency, Antismudge and Anticorrosive Properties. ACS APPLIED MATERIALS & INTERFACES 2023; 15:7427-7441. [PMID: 36696452 DOI: 10.1021/acsami.2c21525] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Green and environment-friendly preparation are of the utmost relevance to the development of transparent antismudge coatings. To prepare a waterborne polyurethane (WPU) coating with antismudge property, it is challenging to balance the stability of dispersion and the antismudge property of coating. Herein, we prepare a transparent bio-based WPU coating grafted with a minor proportion of poly(dimethylsiloxane) (WPU-g-PDMS) using renewable castor oil, monocarbinol-terminated PDMS, hexamethylene diisocyanate trimer, and 2,2-bis(hydroxymethyl)propionic acid as raw materials. Effects of the dosage of monocarbinol-terminated PDMS, the curing temperature, and the curing time on the antismudge performance were studied. Results showed that rigorous stirring (3000 rpm) is necessary to obtain a stable WPU-g-PDMS dispersion with a storage time longer than 6 months. A high curing temperature (>160 °C) and a period of curing time (>1 h) are indispensable to obtain the excellent antismudge property because they would facilitate the grafted low-surface-tension PDMS chains to migrate from the interior to the coating surface. The facts that simulated contaminated liquids such as water, HCl solution, NaOH solution, artificial blood, and tissue fluid could slide off easily and cleanly, and marker ink lined on the coating surface could shrink, indicated that the WPU-g-PDMS coating has good antismudge properties, which could be self-compensated shortly after deterioration. Due to the high cross-linking degree caused by multifunctional polyol and isocyanate, the WPU-g-PDMS coating has high hardness and good anticorrosive performance. The antismudge functionalization and waterborne technology of bio-based polyurethane coatings proposed in this work could be a promising contribution to the green and sustainable development of functional coatings. This kind of WPU-g-PDMS coating is expected to protect and decorate electronic screens, vehicles, and buildings, especially endoscopes.
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Affiliation(s)
- Zhiming Ha
- College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Lei Lei
- College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Mengyu Zhou
- College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Yuzheng Xia
- College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Xiaonong Chen
- College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Peng Mao
- China-Japan Friendship Hospital, Beijing 100029, China
| | - Bifa Fan
- China-Japan Friendship Hospital, Beijing 100029, China
| | - Shuxian Shi
- College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
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14
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Lin B, Yuan L, Gao B, He B. Patterned Duplex Fabric Based on Genetically Modified Spidroin for Smart Wound Management. Adv Healthc Mater 2023; 12:e2202213. [PMID: 36349744 DOI: 10.1002/adhm.202202213] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Revised: 11/04/2022] [Indexed: 11/11/2022]
Abstract
The treatment of diabetic wounds remains a great challenge for the medical community. Here, a smart patterned DNA double helix (duplex)-like fabric based on genetically modified spider silk protein (PDF-S) which is inspired by soft plant tendrils, is proposed for diabetic wound treatment. Benefiting from spider silk protein (spidroin); PDF-S is equipped with high strength; high toughness, and excellent biocompatibility. Notably, the fabric crimped through the biomimetic DNA double-helix-like structure can effectively adapt to tensile impact and the maximum stretch rate reaches 1500%. A pattern-based microfluidic channel of PDF-S allowed wound secretion to flow spontaneously through the channel. Meanwhile; due to the optical properties of the introduced photonic crystal structure; PDF-S is equipped with fluorescence enhancement properties; enabling PDF-S to display color-sensitive behavior suitable for wound monitoring and guiding clinical treatment. In addition, to enable sensitive motion monitoring, microelectronic circuits are integrated on the surface of the PDF-S. These unique material features suggest that this study will lead to a new generation of biomimetic artificial spider silk materials for design and application in the biomedical field.
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Affiliation(s)
- Baoyang Lin
- College of Biotechnology and Pharmaceutical Engineering, School of Pharmaceutical Sciences, Nanjing Tech University, Nanjing, 211816, P. R. China
| | - Liquan Yuan
- College of Biotechnology and Pharmaceutical Engineering, School of Pharmaceutical Sciences, Nanjing Tech University, Nanjing, 211816, P. R. China
| | - Bingbing Gao
- College of Biotechnology and Pharmaceutical Engineering, School of Pharmaceutical Sciences, Nanjing Tech University, Nanjing, 211816, P. R. China
| | - Bingfang He
- College of Biotechnology and Pharmaceutical Engineering, School of Pharmaceutical Sciences, Nanjing Tech University, Nanjing, 211816, P. R. China
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15
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Structure-property relationship of thermoplastic polyurethane cationomers carrying quaternary ammonium groups. REACT FUNCT POLYM 2022. [DOI: 10.1016/j.reactfunctpolym.2022.105447] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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16
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Echarri-Giacchi M, Martín-Martínez JM. Efficient Physical Mixing of Small Amounts of Nanosilica Dispersion and Waterborne Polyurethane by Using Mild Stirring Conditions. Polymers (Basel) 2022; 14:polym14235136. [PMID: 36501531 PMCID: PMC9735813 DOI: 10.3390/polym14235136] [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: 11/18/2022] [Accepted: 11/22/2022] [Indexed: 11/30/2022] Open
Abstract
Good dispersion of nanosilica particles in waterborne polyurethane was obtained by mild mechanical stirring when 0.1-0.5 wt.% nanosilica in aqueous dispersion was added. The addition of small amounts of nanosilica produced more negative Z-potential values, increased the surface tension and decreased the Brookfield viscosity, as well as the extent of shear thinning of the waterborne polyurethane. Depending on the amount of nanosilica, the particle-size distributions of the waterborne polyurethanes changed differently and the addition of only 0.1 wt.% nanosilica noticeably increased the percentage of the particles of 298 nm in diameter. The DSC curves showed two melting peaks at 46 °C and 52 °C, as well as an increase in the melting enthalpy. In addition, when nanosilica was added, the crystallization peak of the waterborne polyurethane was displaced to a higher temperature and showed higher enthalpy. Furthermore, the addition of 0.1-0.5 wt.% nanosilica displaced the temperature of decomposition of the soft domains to higher temperatures due to the intercalation of the particles among the soft segments; this led to a change in the degree of phase separation of the waterborne polyurethanes. As a consequence, improved thermal stability and viscoelastic and mechanical properties of the waterborne polyurethanes were obtained. However, the addition of small amounts of nanosilica was detrimental for the wettability and adhesion of the waterborne polyurethanes due to the existence of acrylic moieties on the nanosilica particles, which seemed to migrate to the interface once the polyurethane was cross-linked. In fact, the final T-peel strength values of the joints made with the waterborne polyurethanes containing nanosilica were significantly lower than the one obtained with the waterborne polyurethane without nanosilica; the higher the nanosilica content, the lower the final adhesion. The better the nanosilica dispersion in the waterborne polyurethane+nanosilica, the higher the final T-peel strength value.
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17
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Wang W, Fan H, Song L, Wang Z, Li H, Xiang J, Huang Q, Chen X. Organosilicon leather coating technology based on carbon peak strategy. JOURNAL OF LEATHER SCIENCE AND ENGINEERING 2022. [DOI: 10.1186/s42825-022-00101-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
AbstractBased on the demand of carbon peak and carbon emission reduction strategy, divinyl-terminated polydimethylsiloxane (ViPDMSVi), poly(methylhydrosiloxane) (PMHS), divinyl-terminated polymethylvinylsiloxane (ViPMVSVi), and fumed silica were used as primary raw materials, polydimethylsiloxane (PDMS) synthetic leather coating was in situ constructed by thermally induced hydrosilylation polymerization on the synthetic leather substrate. The effect of the viscosity of ViPDMSVi, the active hydrogen content of PMHS, the molar ratio of vinyl groups to active hydrogen, the dosage of ViPMVSVi and fumed silica on the performance of PDMS polymer coating, including mechanical properties, cold resistance, flexural resistance, abrasion resistance, hydrophobic and anti-fouling properties were investigated. The results show that ViPDMSVi with high vinyl content and PMHS with low active hydrogen content is more conducive to obtaining organosilicon coating with better mechanical properties, the optimized dosage of ViPMVSVi and fumed silica was 7 wt% and 40 wt%, respectively. In this case, the tensile strength and the broken elongation of the PDMS polymer coating reached 5.96 MPa and 481%, showing reasonable mechanical properties for leather coating. Compared with polyurethane based or polyvinyl chloride based synthetic leather, the silicon based synthetic leather prepared by this method exhibits excellent cold resistance, abrasion resistance, super hydrophobicity, and anti-fouling characteristics.
Graphical Abstract
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18
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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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19
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Cassidy KJ, Shipp DA. Particle formation in thermally initiated radical‐mediated thiol‐ene emulsion polymerizations. JOURNAL OF POLYMER SCIENCE 2022. [DOI: 10.1002/pol.20220322] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Kyle J. Cassidy
- Department of Chemistry & Biomolecular Science, Center for Advanced Materials Processing Clarkson University Potsdam New York USA
| | - Devon A. Shipp
- Department of Chemistry & Biomolecular Science, Center for Advanced Materials Processing Clarkson University Potsdam New York USA
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20
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Cao Y, Chen B, Zhong H, Pei L, Liu G, Xu Z, Shen J, Ye M. Ti 2C 3T x/Polyurethane Constructed by Gas-Liquid Interface Self-Assembly for Underwater Sensing. ACS APPLIED MATERIALS & INTERFACES 2022; 14:24659-24667. [PMID: 35584532 DOI: 10.1021/acsami.2c03565] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Nowadays, multifunctional, easily prepared, and highly sensitive flexible sensors have attracted extensive attention and are gradually used in various scenarios. Here, we report the design of the Ti2C3Tx/polyurethane composites prepared by a facile gas-liquid interface self-assembly. The obtained flexible sensor has a wide detection range (∼900%), a low-stress detection limit (<1%), a high sensitivity (GF = 1.3, strain from 0 to 100%), and a fast response time (<140 ms). The multifunctional stress sensor can be applied to not only wearable motion monitoring and detection of various signals but also the detection of underwater human motion, as well as different motion states and swimming frequencies of toy fish in water, demonstrating its great prospects in a variety of applications, such as human movement monitoring and marine biological detection and research.
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Affiliation(s)
- Yudong Cao
- Institute of Special Materials and Technology, Fudan University, Shanghai 200433, P. R. China
- Department of Chemistry, Fudan University, Shanghai 200433, P. R. China
| | - Bin Chen
- Institute of Special Materials and Technology, Fudan University, Shanghai 200433, P. R. China
- Department of Chemistry, Fudan University, Shanghai 200433, P. R. China
| | - Haibin Zhong
- Institute of Special Materials and Technology, Fudan University, Shanghai 200433, P. R. China
| | - Liyuan Pei
- Institute of Special Materials and Technology, Fudan University, Shanghai 200433, P. R. China
| | - Guanglei Liu
- Institute of Special Materials and Technology, Fudan University, Shanghai 200433, P. R. China
| | - Zhenglong Xu
- Institute of Special Materials and Technology, Fudan University, Shanghai 200433, P. R. China
| | - Jianfeng Shen
- Institute of Special Materials and Technology, Fudan University, Shanghai 200433, P. R. China
| | - Mingxin Ye
- Institute of Special Materials and Technology, Fudan University, Shanghai 200433, P. R. China
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21
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Liu H, Sun D. Synthesis of self‐healing supramolecular waterborne polyurethane with quadruple hydrogen bonds via ureidotriazine. J Appl Polym Sci 2022. [DOI: 10.1002/app.51932] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Hao Liu
- School of Chemistry and Chemical Engineering South China University of Technology Guangzhou China
| | - Dongcheng Sun
- School of Chemistry and Chemical Engineering South China University of Technology Guangzhou China
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22
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Water-Based Highly Stretchable PEDOT:PSS/Nonionic WPU Transparent Electrode. Polymers (Basel) 2022; 14:polym14050949. [PMID: 35267772 PMCID: PMC8912668 DOI: 10.3390/polym14050949] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Revised: 02/21/2022] [Accepted: 02/24/2022] [Indexed: 12/02/2022] Open
Abstract
Poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) has the merits of high electrical conductivity and solution processability, and can be dispersed in water. To improve the stretchability of PEDOT:PSS-based transparent electrode films, the intrinsically conducting polymer PEDOT:PSS was blended with highly stretchable nonionic waterborne polyurethane (WPU) and coated on a thermoplastic polyurethane (TPU) film. Nonionic WPU has good compatibility with PEDOT:PSS, without affecting the acidity. WPU undergoes hydrogen bonding and coulombic attractions with PEDOT:PSS. With variation of the WPU content, differences in the electrical properties, such as the sheet resistance and mechanical stretchability, of the coated thin films were observed. The film with 2.0 wt% WPU could be stretched to 400% of the electrode surface without damage to the surface of the electrode films. The WPU and TPU films both have a polyester group, which provides good adhesion between the WPU-based transparent electrodes and the TPU substrate films. A stretchable alternating current electroluminescence (ACEL) device was constructed by using the water-based PEDOT:PSS/nonionic WPU composite as both the bottom and top transparent electrodes. The fabricated ACEL remained its initial luminance in the 500% stretched state.
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23
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Wang M, Cai G, Liu G, Cui C, Gao H, Gao J. Preparation of waterborne polyurethane film based on spirooxazine containing hydrophilic groups. J Appl Polym Sci 2022. [DOI: 10.1002/app.52185] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Min Wang
- School of Chemical Engineering Sichuan University Chengdu China
| | - Gang Cai
- School of Chemical Engineering Sichuan University Chengdu China
| | - Guojie Liu
- School of Chemical Engineering Sichuan University Chengdu China
| | - Congcong Cui
- School of Chemical Engineering Sichuan University Chengdu China
| | - He Gao
- School of Chemical Engineering Sichuan University Chengdu China
| | - Jun Gao
- School of Chemical Engineering Sichuan University Chengdu China
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24
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Current advances of Polyurethane/Graphene composites and its prospects in synthetic leather: A review. Eur Polym J 2021. [DOI: 10.1016/j.eurpolymj.2021.110837] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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25
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Mestry SU, Khuntia SP, Mhaske ST. Development of waterborne polyurethane dispersions (WPUDs) from novel cardanol-based reactive dispersing agent. Polym Bull (Berl) 2021. [DOI: 10.1007/s00289-020-03450-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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26
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Wu G, Song X, Yang Z, Li Y, Zhang H. Biodegradability of renewable waterborne polyurethane modified with vinyl-grafted gelatin by UV curing. Polym Bull (Berl) 2021. [DOI: 10.1007/s00289-021-03962-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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27
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Gomez-Lopez A, Elizalde F, Calvo I, Sardon H. Trends in non-isocyanate polyurethane (NIPU) development. Chem Commun (Camb) 2021; 57:12254-12265. [PMID: 34709246 DOI: 10.1039/d1cc05009e] [Citation(s) in RCA: 49] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The transition towards safer and more sustainable production of polymers has led to a growing body of academic research into non-isocyanate polyurethanes (NIPUs) as potential replacements for conventional, isocyanate-based polyurethane materials. This perspective article focuses on the opportunities and current limitations of NIPUs produced by the reaction between biobased cyclic carbonates with amines, which offers an interesting pathway to renewable NIPUs. While it was initially thought that due to the similarities in the chemical structure, NIPUs could be used to directly replace conventional polyurethanes (PU), this has proven to be more challenging to achieve in practice. As a result, and in spite of the vast amount of academic research into this topic, the market size of NIPUs remains negligible. In this perspective, we will emphasize the main limitations of NIPUs in comparison to conventional PUs and the most significant advances made by others and us to overcome these limitations. Finally, we provide our personal view of where research should be directed to promote the transition from the academic to the industrial sector.
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Affiliation(s)
- Alvaro Gomez-Lopez
- POLYMAT and Department of Polymers and Advanced Materials: Physics, Chemistry and Technology, Faculty of Chemistry, University of the Basque Country UPV/EHU, Paseo Manuel de Lardizabal 3, 20018, Donostia-San Sebastián, Spain.
| | - Fermin Elizalde
- POLYMAT and Department of Polymers and Advanced Materials: Physics, Chemistry and Technology, Faculty of Chemistry, University of the Basque Country UPV/EHU, Paseo Manuel de Lardizabal 3, 20018, Donostia-San Sebastián, Spain.
| | - Iñigo Calvo
- ORIBAY Group Automotive S.L. R&D Department, Portuetxe bidea 18, 20018, Donostia-San Sebastián, Spain
| | - Haritz Sardon
- POLYMAT and Department of Polymers and Advanced Materials: Physics, Chemistry and Technology, Faculty of Chemistry, University of the Basque Country UPV/EHU, Paseo Manuel de Lardizabal 3, 20018, Donostia-San Sebastián, Spain.
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28
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García-Quintero A, Palencia M. A critical analysis of environmental sustainability metrics applied to green synthesis of nanomaterials and the assessment of environmental risks associated with the nanotechnology. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 793:148524. [PMID: 34182452 DOI: 10.1016/j.scitotenv.2021.148524] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Revised: 06/03/2021] [Accepted: 06/14/2021] [Indexed: 05/19/2023]
Abstract
Nanotechnology is one of the most relevant scientific areas today due to its multiple applications in fields such as medicine, environmental remediation, information technology and energy conversion. This importance has led to the need to advance in the development of environmentally sustainable and safe nanomaterials by incorporating the principles of green chemistry during their synthesis and in their applications. However, this qualitative framework of thought does not offer minimum criteria for the use of the term "green", and therefore, this adjective is commonly used to refer to bio-based or nanotechnological processes without taking into account their net ecological impact. In this context, environmental sustainability metrics can be applied to nanotechnology to compare, optimize and quantify the environmental sustainability of synthesis procedures. This review provides an overview of green chemistry and its application in nanotechnology, but also an analysis of the use of green chemistry principles in the development of bio-based nanobiotechnology and nanosynthesis, with special emphasis on the use of sustainability's metrics for the quantitative analysis of nanomaterial synthesis protocols. These include: Atom Economy, E-factor, Process Mass Intensity, Energy Intensity, and Life Cycle Analysis.
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Affiliation(s)
- Angélica García-Quintero
- Research Group in Science with Technological Applications (GI-CAT), Department of Chemistry, Faculty of Natural and Exact Sciences, Universidad del Valle, Cali, Colombia
| | - Manuel Palencia
- Research Group in Science with Technological Applications (GI-CAT), Department of Chemistry, Faculty of Natural and Exact Sciences, Universidad del Valle, Cali, Colombia.
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29
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Zhao Y, Su Y, Zou W, Chen G, Deng Y, Cheng J, Ren H, Zhao Q. Influence of fluorine‐containing side chain on the properties of waterborne polyurethane‐urea. J Appl Polym Sci 2021. [DOI: 10.1002/app.50971] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Yanqing Zhao
- School of Chemical Engineering Sichuan University Chengdu China
| | - Yingli Su
- School of Chemical Engineering Sichuan University Chengdu China
| | - Wangcai Zou
- School of Chemical Engineering Sichuan University Chengdu China
| | - Gang Chen
- School of Chemical Engineering Sichuan University Chengdu China
| | - Yiqing Deng
- School of Chemical Engineering Sichuan University Chengdu China
| | - Jun Cheng
- Research and Development Center Guangdong Carpoly Science and Technology Material Co., Ltd. Jiangmen China
| | - Haisheng Ren
- School of Chemical Engineering Sichuan University Chengdu China
| | - Qiang Zhao
- School of Chemical Engineering Sichuan University Chengdu China
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30
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Wei Z, Liu Z, Fu X, Wang Y, Yuan A, Lei J. Effect of crystalline structure on water resistance of waterborne polyurethane. Eur Polym J 2021. [DOI: 10.1016/j.eurpolymj.2021.110647] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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31
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Carbon Dots Intensified Mechanochemiluminescence from Waterborne Polyurethanes as Tunable Force Sensing Materials. CHINESE JOURNAL OF POLYMER SCIENCE 2021. [DOI: 10.1007/s10118-021-2601-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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32
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Laboratory evaluation of caricaceae plant as a locally sourced surfactant for gas hydrate inhibition in a laboratory mini flow loop. APPLIED PETROCHEMICAL RESEARCH 2021. [DOI: 10.1007/s13203-021-00275-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
Abstract
AbstractThe oil and gas business is serious business and involves millions of dollars so whatever mitigates flow assurance is taken seriously. One of such things is natural gas hydrates. Hydrates are crystalline solids formed when water under low temperatures and high pressures encapsulated natural gases (C1–C4). They form blockages and impede the flow of gas which can lead to the loss of millions of dollars and at times lead to personnel death. Mitigation of gas hydrates has always been with chemicals especially for areas like deep offshore where accessibility is difficult. The chemicals that are in use currently are generally synthetic, expensive and hazardous to lives and environment hence the need for readily available locally sourced materials that are eco-friendly. This study considers and screens a locally sourced surfactant from the plant family caricaceae’ Extract (CE) as a gas hydrate inhibitor in a locally fabricated 39.4-inch mini flow loop of ½ inch internal diameter (ID) which mimics the offshore environment. Various pressure plots (pressure versus time, initial and final pressure versus time and change in pressure versus time) show that the CE performed better than MEG with percentage volumes of gas left in the system for 0.01–0.05 wt% of the extract having values that ranged from 76.7 to 87.33, while volume left for MEG ranged between 70 and 74.67% (1–5 wt%). The CE performed better in small doses compared to those of MEG, in all weight percentages of study. Furthermore, the inhibition capacities which show the level of performance of the inhibitors was also used as a measure of inhibition for both inhibitors. The CE inhibited systems had values of 69.3, 80.7, 78.07, 79.82, and 83.3%, while that of the MEG inhibited system was 60.53, 55.26, 73.68, 72.81, and 66.67% for the various weight percentages considered. The CE should be developed as gas hydrate inhibitors due to its effectiveness and eco-friendliness.
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33
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Wang Q, Xin X, Liu H, Song N, Xu B, Wang M. Influence of preparation method on adhesion and drying performances of polyurethane dispersion. J Appl Polym Sci 2021. [DOI: 10.1002/app.50506] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Qichao Wang
- School of Light Industry Science and Technology Beijing Technology and Business University Beijing China
| | - Xiulan Xin
- School of Light Industry Science and Technology Beijing Technology and Business University Beijing China
| | - Hongqin Liu
- School of Light Industry Science and Technology Beijing Technology and Business University Beijing China
| | - Nan Song
- School of Light Industry Science and Technology Beijing Technology and Business University Beijing China
| | - Baocai Xu
- School of Light Industry Science and Technology Beijing Technology and Business University Beijing China
| | - Meng Wang
- School of Light Industry Science and Technology Beijing Technology and Business University Beijing China
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34
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Nwosu CN, Iliut M, Vijayaraghavan A. Graphene and water-based elastomer nanocomposites - a review. NANOSCALE 2021; 13:9505-9540. [PMID: 34037053 DOI: 10.1039/d1nr01324f] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Water-based elastomers (WBEs) are polymeric elastomers in aqueous systems. WBEs have recently continued to gain wide acceptability by both academia and industry due to their remarkable environmental and occupational safety friendly nature, as a non-toxic elastomeric dispersion with low-to-zero volatile organic compound (VOC) emission. However, their inherent poor mechanical and thermal properties remain a drawback to these sets of elastomers. Hence, nano-fillers such as graphene oxide (GO), reduced graphene oxide (rGO) and graphene nanoplatelets (GNPs) are being employed for the reinforcement and enhancement of this set of elastomers. This work is geared towards a critical review and summation of the state-of-the-art developments of graphene enhanced water-based elastomer composites (G-WBEC), including graphene and composite production processes, properties, characterisation techniques and potential commercial applications. The dominant production techniques, such as emulsion mixing and in situ polymerisation processes, which include Pickering emulsion, mini-emulsion and micro-emulsion, as well as ball-milling approach, are systematically evaluated. Details of the account of mechanical properties, electrical conductivity, thermal stability and thermal conductivity enhancements, as well as multifunctional properties of G-WBEC are discussed, with further elaboration on the structure-property relationship effects (such as dispersion and filler-matrix interface) through effective and non-destructive characterisation tools like Raman and XRD, among others. The paper also evaluates details of the current application attempts and potential commercial opportunities for G-WBEC utilisation in aerospace, automotive, oil and gas, biomedicals, textiles, sensors, electronics, solar energy, and thermal management.
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Affiliation(s)
- Christian N Nwosu
- Department of Materials, The University of Manchester, Manchester M13 9PL, UK.
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35
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Germán L, Cuevas JM, Cobos R, Pérez-Alvarez L, Vilas-Vilela JL. Green alternative cosolvents to N-methyl-2-pyrrolidone in water polyurethane dispersions. RSC Adv 2021; 11:19070-19075. [PMID: 35478612 PMCID: PMC9033607 DOI: 10.1039/d1ra03157k] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Accepted: 05/19/2021] [Indexed: 11/21/2022] Open
Abstract
N-Methyl-2-pyrrolidone is a toxic dipolar aprotic solvent widely used in the synthesis of polyurethane dispersions (PUD). Since legislation strongly restricts this substance, green alternatives are essential. Dihydrolevoglucosenone and gamma valerolactone demonstrate comparable performance to that of NMP as cosolvent in the synthesis and the film forming process of PUD.
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Affiliation(s)
- Lorena Germán
- Gaiker Technology Centre, Basque Research and Technology Alliance (BRTA), Parque Tecnológico de Bizkaia edificio 202 E-48170 Zamudio Spain
| | - José María Cuevas
- Gaiker Technology Centre, Basque Research and Technology Alliance (BRTA), Parque Tecnológico de Bizkaia edificio 202 E-48170 Zamudio Spain
| | - Rubén Cobos
- Gaiker Technology Centre, Basque Research and Technology Alliance (BRTA), Parque Tecnológico de Bizkaia edificio 202 E-48170 Zamudio Spain
| | - Leyre Pérez-Alvarez
- Macromolecular Chemistry Group (LABQUIMAC), Department of Physical Chemistry, Faculty of Science and Technology, University of the Basque Country UPV/EHU Barrio Sarriena s/n 48940 Leioa Spain
| | - José Luis Vilas-Vilela
- Macromolecular Chemistry Group (LABQUIMAC), Department of Physical Chemistry, Faculty of Science and Technology, University of the Basque Country UPV/EHU Barrio Sarriena s/n 48940 Leioa Spain
- BCMaterials, Basque Center for Materials, Applications and Nanostructures UPV/EHU Science Park 48940 Leioa Spain
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36
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Jana S, Ramar P, Samanta D, Jaisankar SN. Bromo-substituted blocked hexamethylene diisocyanate adduct: synthesis, characterization and application toward polyurethane coating. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2021. [DOI: 10.1080/10601325.2020.1845569] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Sourita Jana
- Polymer Science & Technology Division, CSIR-Central Leather Research Institute, Chennai, India
- University of Madras, Chennai, India
| | - Periyamuthu Ramar
- Polymer Science & Technology Division, CSIR-Central Leather Research Institute, Chennai, India
| | - Debasis Samanta
- Polymer Science & Technology Division, CSIR-Central Leather Research Institute, Chennai, India
| | - Sellamuthu N. Jaisankar
- Polymer Science & Technology Division, CSIR-Central Leather Research Institute, Chennai, India
- University of Madras, Chennai, India
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37
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Affiliation(s)
- Pengxiang Si
- Department of Chemical Engineering Waterloo Institute for Nanotechnology, Institute for Polymer Research, Centre for Biotechnology and Bioengineering, University of Waterloo Waterloo Ontario Canada
| | - Boxin Zhao
- Department of Chemical Engineering Waterloo Institute for Nanotechnology, Institute for Polymer Research, Centre for Biotechnology and Bioengineering, University of Waterloo Waterloo Ontario Canada
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38
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Patti A, Costa F, Perrotti M, Barbarino D, Acierno D. Polyurethane Impregnation for Improving the Mechanical and the Water Resistance of Polypropylene-Based Textiles. MATERIALS 2021; 14:ma14081951. [PMID: 33924577 PMCID: PMC8068850 DOI: 10.3390/ma14081951] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/12/2021] [Revised: 04/07/2021] [Accepted: 04/09/2021] [Indexed: 11/16/2022]
Abstract
Commercial waterborne polyurethane (PU) dispersions, different in chemistry and selected on the basis of eco-friendly components, have been applied to a common polypropylene (PP)-based woven fabric. Impregnation has been chosen as a textile treatment for improving the features of basic technical textiles in light of potential applicability in luggage and bag production. The effect of drying method, performed under conditions achieved by varying the process temperature and pressure, on the features of the treated textiles, has been verified. The prepared specimens were characterized in terms of mechanical behavior (tensile, tear and abrasion resistance) and water resistance (surface wettability and hydrostatic pressure throughout the treated textiles). The experimental results suggest an incremental improvement of the tensile features for all the investigated specimens. For tear strength, no augmentation compared to that of the neat textile, could be verified as a consequence of polyurethane treatment. Remarkable improvements of abrasion resistance were displayed for all the impregnated PP textiles. Benefits in water resistance could be attributed to the presence of hydrophobic PU in the textile weaving of the PP samples. The ultimate improvement in water resistance was dependent on drying conditions.
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Affiliation(s)
- Antonella Patti
- Department of Civil Engineering and Architecture (DICAr), University of Catania, Viale Andrea Doria 6, 95125 Catania, Italy
- Correspondence: (A.P.); (D.A.)
| | - Francesco Costa
- Kuvera Spa, Interporto di Nola-Lotto H, 80035 Naples, Italy; (F.C.); (M.P.); (D.B.)
| | - Marta Perrotti
- Kuvera Spa, Interporto di Nola-Lotto H, 80035 Naples, Italy; (F.C.); (M.P.); (D.B.)
| | - Domenico Barbarino
- Kuvera Spa, Interporto di Nola-Lotto H, 80035 Naples, Italy; (F.C.); (M.P.); (D.B.)
| | - Domenico Acierno
- CRdC Nuove Tecnologie per le Attività Produttive Scarl, Via Nuova Agnano 11, 80125 Naples, Italy
- Correspondence: (A.P.); (D.A.)
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39
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Lee YJ, La Y, Jeon OS, Lee HJ, Shin MK, Yang KH, You YJ, Park SY. Effects of boron nitride nanotube content on waterborne polyurethane-acrylate composite coating materials. RSC Adv 2021; 11:12748-12756. [PMID: 35423792 PMCID: PMC8696959 DOI: 10.1039/d1ra00873k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Accepted: 03/18/2021] [Indexed: 11/29/2022] Open
Abstract
Waterborne polyurethane-acrylate (WPUA) is a promising eco-friendly material for adhesives and coatings such as paints and inks on substrates including fibers, leather, paper, rubber, and wood. Recently, WPUA and its composites have been studied to overcome severe problems such as poor water resistance, mechanical properties, chemical resistance, and thermal stability. In this study, composite films consisting of WPUA and rod-type boron nitride nanotubes (BNNTs), which have excellent intrinsic properties including high mechanical strength and chemical stability, were investigated. Specifically, BNNT/WPUA composite films were synthesized by mixing aqueous solutions of BNNT and WPUA via facile mechanical agitation without any organic solvents or additives, and the optimal content of BNNTs was determined. For the 2.5 wt% BNNT/WPUA composite, the BNNTs were found to be well distributed in the WPUA matrix and this material showed the overall best performance in terms of water resistance, thermal conductivity, and corrosion resistance. Owing to these advantageous properties and their environmentally friendly nature, BNNT/WPUA composite coating materials are expected to be applicable in a wide variety of industries.
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Affiliation(s)
- Yong Joon Lee
- Advanced Institute of Convergence Technology, Seoul National University Suwon Gyeonggi-Do 16229 Republic of Korea
| | - Yunju La
- Advanced Institute of Convergence Technology, Seoul National University Suwon Gyeonggi-Do 16229 Republic of Korea
| | - Ok Sung Jeon
- Advanced Institute of Convergence Technology, Seoul National University Suwon Gyeonggi-Do 16229 Republic of Korea
| | - Hak Ji Lee
- Advanced Institute of Convergence Technology, Seoul National University Suwon Gyeonggi-Do 16229 Republic of Korea
| | - Min Kyoon Shin
- Advanced Institute of Convergence Technology, Seoul National University Suwon Gyeonggi-Do 16229 Republic of Korea
| | - Keun-Hyeok Yang
- Department of Architectural Engineering, Kyonggi University Suwon Gyeonggi-Do 16227 Republic of Korea
| | - Young Joon You
- Advanced Institute of Convergence Technology, Seoul National University Suwon Gyeonggi-Do 16229 Republic of Korea
| | - Sang Yoon Park
- Advanced Institute of Convergence Technology, Seoul National University Suwon Gyeonggi-Do 16229 Republic of Korea
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40
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Zhang X, Cai Y, Zhang X, Aziz T, Fan H, Bittencourt C. Synthesis and characterization of eugenol‐based silicone modified waterborne polyurethane with excellent properties. J Appl Polym Sci 2021. [DOI: 10.1002/app.50515] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Xiaojing Zhang
- State Key Laboratory of Chemical Engineering College of Chemical and Biological Engineering, Zhejiang University Hangzhou China
| | - Yuquan Cai
- State Key Laboratory of Chemical Engineering College of Chemical and Biological Engineering, Zhejiang University Hangzhou China
| | - Xianwei Zhang
- State Key Laboratory of Chemical Engineering College of Chemical and Biological Engineering, Zhejiang University Hangzhou China
| | - Tariq Aziz
- State Key Laboratory of Chemical Engineering College of Chemical and Biological Engineering, Zhejiang University Hangzhou China
| | - Hong Fan
- State Key Laboratory of Chemical Engineering College of Chemical and Biological Engineering, Zhejiang University Hangzhou China
| | - Carla Bittencourt
- Center of Innovation and Research in Materials and Polymers (CIRMAP) University of Mons Mons Belgium
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41
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Zhang W, Ma F, Meng Z, Kong L, Dai Z, Zhao G, Zhu A, Liu X, Lin N. Green Synthesis of Waterborne Polyurethane for High Damping Capacity. MACROMOL CHEM PHYS 2021. [DOI: 10.1002/macp.202000457] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Wenhai Zhang
- College of Materials Research Institution for Biomimetics and Soft Matter Fujian Key Provincial Laboratory for Soft Functional Materials Research Xiamen University 422 Siming South Road Xiamen 361005 China
| | - Fangxing Ma
- College of Materials Research Institution for Biomimetics and Soft Matter Fujian Key Provincial Laboratory for Soft Functional Materials Research Xiamen University 422 Siming South Road Xiamen 361005 China
| | - Zhaohui Meng
- College of Materials Research Institution for Biomimetics and Soft Matter Fujian Key Provincial Laboratory for Soft Functional Materials Research Xiamen University 422 Siming South Road Xiamen 361005 China
| | - Lingqing Kong
- College of Materials Research Institution for Biomimetics and Soft Matter Fujian Key Provincial Laboratory for Soft Functional Materials Research Xiamen University 422 Siming South Road Xiamen 361005 China
| | - Ziyang Dai
- College of Materials Research Institution for Biomimetics and Soft Matter Fujian Key Provincial Laboratory for Soft Functional Materials Research Xiamen University 422 Siming South Road Xiamen 361005 China
| | - Guangxing Zhao
- College of Materials Research Institution for Biomimetics and Soft Matter Fujian Key Provincial Laboratory for Soft Functional Materials Research Xiamen University 422 Siming South Road Xiamen 361005 China
| | - Anna Zhu
- State Key Laboratory of NBC Protection for Civilian Beijing 102205 China
| | - Xiang‐Yang Liu
- Department of Physics National University of Singapore 2 Science Drive 3 Singapore 117542 Singapore
| | - Naibo Lin
- College of Materials Research Institution for Biomimetics and Soft Matter Fujian Key Provincial Laboratory for Soft Functional Materials Research Xiamen University 422 Siming South Road Xiamen 361005 China
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42
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Jiang L, Ren Z, Liu W, Liu H, Zhu C. Synthesis and molecular interaction of tung oil‐based anionic waterborne polyurethane dispersion. J Appl Polym Sci 2020. [DOI: 10.1002/app.49383] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Lei Jiang
- School of Materials Science and EngineeringZhengzhou University Zhengzhou People's Republic of China
- High and New Technology Research Center of Henan Academy of Sciences Zhengzhou People's Republic of China
| | - Zhiyong Ren
- High and New Technology Research Center of Henan Academy of Sciences Zhengzhou People's Republic of China
| | - Wentao Liu
- School of Materials Science and EngineeringZhengzhou University Zhengzhou People's Republic of China
| | - Hao Liu
- School of Materials Science and EngineeringZhengzhou University Zhengzhou People's Republic of China
| | - Chengshen Zhu
- School of Materials Science and EngineeringZhengzhou University Zhengzhou People's Republic of China
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43
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Liu X, Hong W, Chen X. Continuous Production of Water-Borne Polyurethanes: A Review. Polymers (Basel) 2020; 12:polym12122875. [PMID: 33266183 PMCID: PMC7760167 DOI: 10.3390/polym12122875] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Revised: 11/22/2020] [Accepted: 11/26/2020] [Indexed: 11/16/2022] Open
Abstract
Water-borne polyurethanes are novel functional polymers that use water as the dispersion medium. When compared with solvent-borne polyurethanes, water-borne polyurethanes are more environmentally friendly and easier to transport and store. Water-borne polyurethanes have attracted increasing attention due to their extensive applications in plastics, paints, adhesives, inks, biomaterials, and other fields. In this study, the characteristics of water-borne polyurethanes were discussed, followed by a review of studies detailing reaction procedures and mechanisms for their continuous production. Additionally, current and future applications of continuous production processes for water-borne polyurethanes are presented.
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Structure–Properties Relationship in Waterborne Poly(Urethane-Urea)s Synthesized with Dimethylolpropionic Acid (DMPA) Internal Emulsifier Added before, during and after Prepolymer Formation. Polymers (Basel) 2020; 12:polym12112478. [PMID: 33114514 PMCID: PMC7694149 DOI: 10.3390/polym12112478] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2020] [Revised: 10/15/2020] [Accepted: 10/23/2020] [Indexed: 11/17/2022] Open
Abstract
Dimethylolpropionic acid (DMPA) internal emulsifier has been added before, during and after prepolymer formation in the synthesis of waterborne poly(urethane-urea)s (PUDs) and their structure–properties relationships have been assessed. PUDs were characterized by pH, viscosity and particle size measurements, and the structure of the poly(urethane-urea) (PU) films was assessed by infra-red spectroscopy, differential scanning calorimetry, X-ray diffraction, thermal gravimetric analysis, plate–plate rheology and dynamic mechanical thermal analysis. The adhesion properties of the PUDs were measured by cross-hatch adhesion and T-peel test. The lowest pH value and the highest mean particle size were found in the PUD made by adding DMPA after prepolymer formation, all PUDs showed relatively ample mono-modal particle size distributions. The highest viscosity and noticeable shear thinning were obtained in the PUD made by adding DMPA during prepolymer formation. Depending on the stage of addition of DMPA, the length of the prepolymer varied and the PU films showed different degree of micro-phase separation. Because the shortest prepolymer was formed in the PU made with DMPA added before prepolymer, this PU film showed the lowest storage moduli and early melting indicating higher degree of micro-phase separation. The highest storage modulus, later melting, higher temperature and lower modulus at the cross between the storage and loss moduli corresponded to the PU made by adding DMPA after prepolymer formation, because the longer prepolymer produced during synthesis. The lowest thermal stability corresponded to the PU made by adding DMPA during prepolymer formation and the structures of all PU films were dominated by the soft domains, the main structural differences derived from the hard domains. Whereas DMPA-isophorone diisocyanate (IPDI) urethane and urea hard domains were created in the PU film made by adding DMPA during prepolymer formation, the other PU films showed DMPA-IPDI, polyester-IPDI and two different DMPA-IPDI-polyester hard domains. Finally, the adhesion properties of the PUDs and PU coatings were excellent and they were not influenced by the structural differences caused by adding DMPA in different stages of the synthesis.
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45
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Tailoring of Durable Conductive and UV-Shielding Properties on Cotton and Polyester Fabrics by PEDOT:PSS Screen-Printing. Polymers (Basel) 2020; 12:polym12102356. [PMID: 33066558 PMCID: PMC7602213 DOI: 10.3390/polym12102356] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2020] [Revised: 10/08/2020] [Accepted: 10/13/2020] [Indexed: 11/16/2022] Open
Abstract
In the present study, cotton (Co) and polyester (PES) fabrics were screen-printed with a conductive poly3,4-ethylenedioxythiophene:polystyrene sulfonate (PEDOT:PSS) printing paste along with a commercially-available screen-printing binder (SFXC) or waterborne polyurethane resin (WPU), in order to enhance wash and wear durability, and to improve some functional properties, without essentially influencing the physical–mechanical properties of the base material, as well as the introduced fabrics’ conductivity. The application of a conductive polymer coating reduced transmittance in the whole UV region drastically, indicating good UV-shielding ability in the treated fabrics. Moreover, the employed binders improved the fabrics’ protection against harmful solar UV radiation significantly, depending on the type of fibre and binder. Furthermore, the SFXC binder intensified the hydrophobicity of Co as compared to the WPU binder, and, on the other hand, WPU reduced the hydrophobicity of PES. Finally, the screen-printed fabrics were washed up to 20 cycles and rubbed up to 20,000 cycles, and characterised by means of mass loss determination and electrical resistivity measurement. Both binders enlarged polymer stability against the effect of washing and rubbing, depending on the number of cycles, the type and amount of employed binder, the type of fibres, and the thickness and uniformity of coatings.
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46
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Affiliation(s)
- Dean C Webster
- Department of Coatings and Polymeric Materials North Dakota State University PO Box 6050, Dept 2760 Fargo ND 58108 USA
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47
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Influence of the addition of PEG into PCL‐based waterborne polyurethane‐urea dispersions and films properties. J Appl Polym Sci 2020. [DOI: 10.1002/app.48847] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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48
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Si P, Yu L, Zhao B. Poly Methacrylic Acid Sodium Salt (PMANa)/Polyurethane (PU) Latex-Polyelectrolyte Colloid Systems Enabling One-Pot Fabrication of Nonperiodic Structured Mechanoresponsive Smart Windows. ACS APPLIED MATERIALS & INTERFACES 2020; 12:27607-27613. [PMID: 32450688 DOI: 10.1021/acsami.0c06943] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Mechanoresponsive smart windows can modulate optical transparency by mechanical actuation, showing the advantages of low cost, energy efficiency, and chemical stability. To date, mechanoresponsive smart windows are mainly built on periodic nano- or microstructures such as arrays, wrinkles, 3D photonic crystals, and polymeric nanocomposites. However, the production of periodic structures requires multiple and complicated processes, which restricts large-scale manufacturing of mechanoresponsive smart windows for practical application. Here, we report one-pot fabrication of poly methacrylic acid sodium salt (PMANa)/polyurethane (PU) mechanoresponsive smart windows with a nonperiodic naturally occurring microsized structure. The obtained smart windows display a high contrast ratio and stable transparency switching behavior under 80% tensile strain over 1000 cycles and have a large breaking elongation of 820%. It offers a promising platform for designing and fabricating multifunctional optical devices including anticounterfeiting labels and dynamical light gratings.
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Affiliation(s)
- Pengxiang Si
- Department of Chemical Engineering, Waterloo Institute for Nanotechnology, Institute for Polymer Research, Centre of Bioengineering and Biotechnology, 200 University Avenue West, Waterloo, Ontario N2L 3G1, Canada
| | - Li Yu
- Department of Chemical Engineering, Waterloo Institute for Nanotechnology, Institute for Polymer Research, Centre of Bioengineering and Biotechnology, 200 University Avenue West, Waterloo, Ontario N2L 3G1, Canada
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Key Laboratory for the Green Preparation and Application of Functional Materials, Ministry of Education, Hubei Key Laboratory of Polymer Materials, School of Materials Science and Engineering, Hubei University, Wuhan 430062, China
| | - Boxin Zhao
- Department of Chemical Engineering, Waterloo Institute for Nanotechnology, Institute for Polymer Research, Centre of Bioengineering and Biotechnology, 200 University Avenue West, Waterloo, Ontario N2L 3G1, Canada
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49
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Synthesis and Characterization of Environmentally-Friendly Self-Matting Waterborne Polyurethane Coatings. COATINGS 2020. [DOI: 10.3390/coatings10050494] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
A series of self-matting waterborne polyurethanes (WPUs) were successfully prepared by introducing hydrophilic units into both soft and hard segments. By employing a polycaprolactone polyol containing carboxylate groups within the polymer chains to provide hydrophilicity directly, the matting performance of WPU films was greatly improved. The chemical structures of the WPU resins were confirmed by FTIR spectroscopy, and the morphology of WPU films was observed by SEM. The parameters of WPU preparation were investigated in detail. It was found that the surface gloss of WPU films as well as the particle sizes of WPU dispersions were closely associated with the content of hydrophilic units. As the content of carboxylates or sulfonates increased, the particle sizes of WPU decreased, while the gloss increased gradually. When the particle sizes of dispersions were greater than 3 μm, the gloss of WPU films coated on a leather surface was lower than 1. The results of TG showed that, the initial decomposition temperatures of WPU films were higher than 280 °C, which indicated these films also had good thermal stability. The prepared self-matting WPU coatings would have potential application prospects in the field of leather finishing.
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50
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Zhang L, Qiu T, Sun X, Guo L, He L, Ye J, Li X. Achievement of Both Mechanical Properties and Intrinsic Self-Healing under Body Temperature in Polyurethane Elastomers: A Synthesis Strategy from Waterborne Polymers. Polymers (Basel) 2020; 12:E989. [PMID: 32344576 PMCID: PMC7240400 DOI: 10.3390/polym12040989] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Revised: 04/18/2020] [Accepted: 04/23/2020] [Indexed: 12/24/2022] Open
Abstract
Inspired by the growing demand for smart and environmentally friendly polymer materials, we employed 2,2'-disulfanediyldianiline (22DTDA) as a chain extender to synthesize a waterborne polyurethane (WPUR). Due to the ortho-substituted structure of the aromatic disulfide, the urea moieties formed a unique microphase structure in the WPUR, its mechanical strength was enhanced more 180 times relative to that of the material prepared without 22DTDA, and excellent self-healing abilities at body temperature in air or under ultrasound in water were obtained. If the self-healing process was carried out at 37 °C, 50 °C or under ultrasound, the ultimate tensile strength and elongation at break of the healed film could reach 13.8 MPa and 1150%, 15.4 MPa and 1215%, or 16 MPa and 1056%, respectively. Moreover, the WPUR films could be re-healed at the same fracture location over three cutting-healing cycles, and the recovery rates of the tensile strength and elongation at break remained almost constant throughout these cycles.
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Affiliation(s)
- Liangdong Zhang
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China; (L.Z.); (T.Q.); (X.S.)
| | - Teng Qiu
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China; (L.Z.); (T.Q.); (X.S.)
- Beijing Engineering Research Center of Synthesis and Application of Waterborne Polymer, Beijing University of Chemical Technology, Beijing 100029, China; (L.H.); (J.Y.)
| | - Xiting Sun
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China; (L.Z.); (T.Q.); (X.S.)
| | - Longhai Guo
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China; (L.Z.); (T.Q.); (X.S.)
- Beijing Engineering Research Center of Synthesis and Application of Waterborne Polymer, Beijing University of Chemical Technology, Beijing 100029, China; (L.H.); (J.Y.)
| | - Lifan He
- Beijing Engineering Research Center of Synthesis and Application of Waterborne Polymer, Beijing University of Chemical Technology, Beijing 100029, China; (L.H.); (J.Y.)
- Key Laboratory of Carbon Fiber and Functional Polymers, Ministry of Education, Beijing University of Chemical Technology, Beijing 100029, China
| | - Jun Ye
- Beijing Engineering Research Center of Synthesis and Application of Waterborne Polymer, Beijing University of Chemical Technology, Beijing 100029, China; (L.H.); (J.Y.)
- Key Laboratory of Carbon Fiber and Functional Polymers, Ministry of Education, Beijing University of Chemical Technology, Beijing 100029, China
| | - Xiaoyu Li
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China; (L.Z.); (T.Q.); (X.S.)
- Beijing Engineering Research Center of Synthesis and Application of Waterborne Polymer, Beijing University of Chemical Technology, Beijing 100029, China; (L.H.); (J.Y.)
- Key Laboratory of Carbon Fiber and Functional Polymers, Ministry of Education, Beijing University of Chemical Technology, Beijing 100029, China
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