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Lam KY, Lee CS, Tan RYH. NIR-induced photothermal-responsive shape memory polyurethane for versatile smart material applications. RSC Adv 2024; 14:24265-24286. [PMID: 39104559 PMCID: PMC11299057 DOI: 10.1039/d4ra04754k] [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: 06/30/2024] [Accepted: 07/25/2024] [Indexed: 08/07/2024] Open
Abstract
Stimuli responsiveness has been an attractive feature of smart material design, allowing the chemical and physical properties of the materials to change in response to small environmental variations. The versatile shape memory polyurethane (SMPU) has been advanced into thermally-responsive SMPU, enabling its use in neurovascular stents, smart fibers for compression garments, and thermal-responsive components for aircraft and aerospace structures. While thermally-induced SMPU materials exhibit excellent shape recovery and fixity, they encounter limitations such as long response times, energy-intensive heating processes, and potential damage to heat-sensitive components, hindering their wide application. Thus, SMPU has further advanced into a photothermal-responsive material by incorporating photothermal agents into the polymer matrix, offering faster response times, compatibility with heat-sensitive materials, and enhanced mechanical properties, expanding the versatility and applicability of shape memory technology. This review focuses on the classes of NIR-induced photothermal agent used in SMPU systems, their synthesis methods, and photothermal-responsive mechanism under NIR-light, which offers a dual responsiveness to the host SMPU. The advantages and limitations of NIR-induced photothermal SMPU are reviewed, and challenges in their development are discussed.
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Affiliation(s)
- Ki Yan Lam
- Department of Pharmaceutical Chemistry, School of Pharmacy, IMU University No. 126, Jalan Jalil Perkasa 19, Bukit Jalil 57000 Kuala Lumpur Malaysia
| | - Choy Sin Lee
- Department of Pharmaceutical Chemistry, School of Pharmacy, IMU University No. 126, Jalan Jalil Perkasa 19, Bukit Jalil 57000 Kuala Lumpur Malaysia
| | - Rachel Yie Hang Tan
- School of Postgraduate Studies, IMU University No. 126, Jalan Jalil Perkasa 19, Bukit Jalil 57000 Kuala Lumpur Malaysia
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Li X, Lin Y, Zhao C, Meng N, Bai Y, Wang X, Yu J, Ding B. Biodegradable Polyurethane Derived from Hydroxylated Polylactide with Superior Mechanical Properties. Polymers (Basel) 2024; 16:1809. [PMID: 39000664 PMCID: PMC11243797 DOI: 10.3390/polym16131809] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2024] [Revised: 06/07/2024] [Accepted: 06/20/2024] [Indexed: 07/17/2024] Open
Abstract
Developing biodegradable polyurethane (PU) materials as an alternative to non-degradable petroleum-based PU is a crucial and challenging task. This study utilized lactide as the starting material to synthesize polylactide polyols (PLA-OH). PLA-based polyurethanes (PLA-PUs) were successfully synthesized by introducing PLA-OH into the PU molecular chain. A higher content of PLA-OH in the soft segments resulted in a substantial improvement in the mechanical attributes of the PLA-PUs. This study found that the addition of PLA-OH content significantly improved the tensile stress of the PU from 5.35 MPa to 37.15 MPa and increased the maximum elongation to 820.8%. Additionally, the modulus and toughness of the resulting PLA-PU were also significantly improved with increasing PLA-OH content. Specifically, the PLA-PU with 40% PLA-OH exhibited a high modulus of 33.45 MPa and a toughness of 147.18 MJ m-3. PLA-PU films can be degraded to carbon dioxide and water after 6 months in the soil. This highlights the potential of synthesizing PLA-PU using biomass-renewable polylactide, which is important in green and sustainable chemistry.
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Affiliation(s)
- Xueqin Li
- Shanghai Frontier Science Research Center of Advanced Textiles, College of Textiles, Donghua University, Shanghai 201620, China
| | - Yanyan Lin
- Shanghai Frontier Science Research Center of Advanced Textiles, College of Textiles, Donghua University, Shanghai 201620, China
- Innovation Center for Textile Science and Technology, Donghua University, Shanghai 201620, China
| | - Cengceng Zhao
- Shanghai Frontier Science Research Center of Advanced Textiles, College of Textiles, Donghua University, Shanghai 201620, China
| | - Na Meng
- Shanghai Frontier Science Research Center of Advanced Textiles, College of Textiles, Donghua University, Shanghai 201620, China
| | - Ying Bai
- Textile Industry Science and Technology Development Center, Beijing 100020, China
| | - Xianfeng Wang
- Shanghai Frontier Science Research Center of Advanced Textiles, College of Textiles, Donghua University, Shanghai 201620, China
- Innovation Center for Textile Science and Technology, Donghua University, Shanghai 201620, China
| | - Jianyong Yu
- Shanghai Frontier Science Research Center of Advanced Textiles, College of Textiles, Donghua University, Shanghai 201620, China
- Innovation Center for Textile Science and Technology, Donghua University, Shanghai 201620, China
| | - Bin Ding
- Shanghai Frontier Science Research Center of Advanced Textiles, College of Textiles, Donghua University, Shanghai 201620, China
- Innovation Center for Textile Science and Technology, Donghua University, Shanghai 201620, China
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Silva TAR, Marques AC, Dos Santos RG, Shakoor RA, Taryba M, Montemor MF. Development of BioPolyurethane Coatings from Biomass-Derived Alkylphenol Polyols-A Green Alternative. Polymers (Basel) 2023; 15:polym15112561. [PMID: 37299359 DOI: 10.3390/polym15112561] [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: 04/19/2023] [Revised: 05/30/2023] [Accepted: 05/31/2023] [Indexed: 06/12/2023] Open
Abstract
Bio-based polyols were obtained from the thermochemical liquefaction of two biomass feedstocks, pinewood and Stipa tenacissima, with conversion rates varying between 71.9 and 79.3 wt.%, and comprehensively characterized. They exhibit phenolic and aliphatic moieties displaying hydroxyl (OH) functional groups, as confirmed by attenuated total reflectance-Fourier transform infrared spectroscopy (ATR-FTIR) and nuclear magnetic resonance spectroscopy (NMR) analysis. The biopolyols obtained were successfully employed as a green raw material to produce bio-based polyurethane (BioPU) coatings on carbon steel substrates, using, as an isocyanate source, a commercial bio-based polyisocyanate-Desmodur® Eco N7300. The BioPU coatings were analyzed in terms of chemical structure, the extent of the reaction of the isocyanate species, thermal stability, hydrophobicity, and adhesion strength. They show moderate thermal stability at temperatures up to 100 °C, and a mild hydrophobicity, displaying contact angles between 68° and 86°. The adhesion tests reveal similar pull-off strength values (ca. 2.2 MPa) for the BioPU either prepared with pinewood and Stipa-derived biopolyols (BPUI and BPUII). Electrochemical impedance spectroscopy (EIS) measurements were carried out on the coated substrates for 60 days in 0.05 M NaCl solution. Good corrosion protection properties were achieved for the coatings, with particular emphasis on the coating prepared with the pinewood-derived polyol, which exhibited a low-frequency impedance modulus normalized for the coating thickness of 6.1 × 1010 Ω cm at the end of the 60 days test, three times higher than for coatings prepared with Stipa-derived biopolyols. The produced BioPU formulations show great potential for application as coatings, and for further modification with bio-based fillers and corrosion inhibitors.
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Affiliation(s)
- Tiago A R Silva
- Centro de Química Estrutural (CQE), Institute of Molecular Sciences (IMS), Departamento de Engenharia Química (DEQ), Instituto Superior Técnico (IST), Universidade de Lisboa, Av. Rovisco Pais 1, 1049-001 Lisboa, Portugal
| | - Ana C Marques
- Centro de Recursos Naturais e Ambiente (CERENA), Departamento de Engenharia Química (DEQ), Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais 1, 1049-001 Lisboa, Portugal
| | - Rui G Dos Santos
- Centro de Recursos Naturais e Ambiente (CERENA), Departamento de Engenharia Química (DEQ), Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais 1, 1049-001 Lisboa, Portugal
| | - Rana A Shakoor
- Centre for Advanced Materials (CAM), Qatar University, 9FHQ + JMF, Doha P.O. Box 2713, Qatar
| | - Maryna Taryba
- Centro de Química Estrutural (CQE), Institute of Molecular Sciences (IMS), Departamento de Engenharia Química (DEQ), Instituto Superior Técnico (IST), Universidade de Lisboa, Av. Rovisco Pais 1, 1049-001 Lisboa, Portugal
| | - Maria Fátima Montemor
- Centro de Química Estrutural (CQE), Institute of Molecular Sciences (IMS), Departamento de Engenharia Química (DEQ), Instituto Superior Técnico (IST), Universidade de Lisboa, Av. Rovisco Pais 1, 1049-001 Lisboa, Portugal
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Melo DS, Reis IC, Queiroz JC, Cena CR, Nahime BO, Malmonge JA, Silva MJ. Evaluation of Piezoresistive and Electrical Properties of Conductive Nanocomposite Based on Castor-Oil Polyurethane Filled with MWCNT and Carbon Black. MATERIALS (BASEL, SWITZERLAND) 2023; 16:3223. [PMID: 37110058 PMCID: PMC10143113 DOI: 10.3390/ma16083223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/23/2023] [Revised: 03/17/2023] [Accepted: 03/20/2023] [Indexed: 06/19/2023]
Abstract
Flexible films of a conductive polymer nanocomposite-based castor oil polyurethane (PUR), filled with different concentrations of carbon black (CB) nanoparticles or multiwall carbon nanotubes (MWCNTs), were obtained by a casting method. The piezoresistive, electrical, and dielectric properties of the PUR/MWCNT and PUR/CB composites were compared. The dc electrical conductivity of both PUR/MWCNT and PUR/CB nanocomposites exhibited strong dependences on the concentration of conducting nanofillers. Their percolation thresholds were 1.56 and 1.5 mass%, respectively. Above the threshold percolation level, the electrical conductivity value increased from 1.65 × 10-12 for the matrix PUR to 2.3 × 10-3 and 1.24 × 10-5 S/m for PUR/MWCNT and PUR/CB samples, respectively. Due to the better CB dispersion in the PUR matrix, the PUR/CB nanocomposite exhibited a lower percolation threshold value, corroborated by scanning electron microscopy images. The real part of the alternating conductivity of the nanocomposites was in accordance with Jonscher's law, indicating that conduction occurred by hopping between states in the conducting nanofillers. The piezoresistive properties were investigated under tensile cycles. The nanocomposites exhibited piezoresistive responses and, thus, could be used as piezoresistive sensors.
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Affiliation(s)
- Diego S. Melo
- Department of Physics and Chemistry, Faculty of Engineering, São Paulo State University (UNESP), Ilha Solteira 15385-000, SP, Brazil
- Department of Energy Engineering, Faculty of Engineering and Science, São Paulo State University (UNESP), Rosana 19274-000, SP, Brazil
| | - Idalci C. Reis
- Science and Technology Goiano, Federal Institute of Education, Rio Verde 75901-970, GO, Brazil
| | - Júlio C. Queiroz
- Science and Technology Goiano, Federal Institute of Education, Rio Verde 75901-970, GO, Brazil
| | - Cicero R. Cena
- Institute of Physics, Federal University of Federal do Mato Grosso do Sul (UFMS), Campo Grande 79070-900, MS, Brazil
| | - Bacus O. Nahime
- Science and Technology Goiano, Federal Institute of Education, Rio Verde 75901-970, GO, Brazil
| | - José A. Malmonge
- Department of Physics and Chemistry, Faculty of Engineering, São Paulo State University (UNESP), Ilha Solteira 15385-000, SP, Brazil
| | - Michael J. Silva
- Department of Energy Engineering, Faculty of Engineering and Science, São Paulo State University (UNESP), Rosana 19274-000, SP, Brazil
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5
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Ma G, Wang Q, Ye J, He L, Guo L, Li X, Qiu T, Tuo X. The Multi-Step Chain Extension for Waterborne Polyurethane Binder of Para-Aramid Fabrics. Molecules 2022; 27:7588. [PMID: 36364417 PMCID: PMC9656495 DOI: 10.3390/molecules27217588] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Revised: 10/31/2022] [Accepted: 11/02/2022] [Indexed: 10/03/2023] Open
Abstract
The comprehensive balance of the mechanical, interfacial, and environmental requirements of waterborne polyurethane (WPU) has proved challenging, but crucial in the specific application as the binder for high-performance polymer fiber composites. In this work, a multi-step chain extension (MCE) method was demonstrated using three kinds of small extenders and one kind of macro-chain extender (CE) for different chain extension steps. One dihydroxyl blocked small molecular urea (1,3-dimethylolurea, DMU) was applied as one of the CEs and, through the hybrid macrodiol/diamine systems of polyether, polyester, and polysiloxane, the WPU was developed by the step-by-step optimization on each chain extending reaction via the characterization on the H-bonding association, microphase separation, and mechanical properties. The best performance was achieved when the ratio of polyether/polyester was controlled at 6:4, while 2% of DMU and 1% of polysiloxane diamine was incorporated in the third and fourth chain extension steps, respectively. Under the condition, the WPU exhibited not only excellent tensile strength of 30 MPa, elongation of break of about 1300%, and hydrophobicity indicated by the water contact angle of 98°, but also effective interfacial adhesion to para-aramid fabrics. The peeling strength of the joint based on the polysiloxane incorporated WPU after four steps of chain extension was 430% higher than that prepared through only two steps of chain extension. Moreover, about 44% of the peeling strength was sustained after the joint had been boiling for 40 min in water, suggesting the potential application for high-performance fabric composites.
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Affiliation(s)
- Ge Ma
- Key Laboratory of Carbon Fiber and Functional Polymers, Ministry of Education, Beijing University of Chemical Technology, Beijing 100029, China
- Beijing Engineering Research Center of Synthesis and Application of Waterborne Polymer, Beijing University of Chemical Technology, Beijing 100029, China
| | - Qianshu Wang
- Key Laboratory of Carbon Fiber and Functional Polymers, Ministry of Education, Beijing University of Chemical Technology, Beijing 100029, China
- Beijing Engineering Research Center of Synthesis and Application of Waterborne Polymer, Beijing University of Chemical Technology, Beijing 100029, China
| | - Jun Ye
- Key Laboratory of Carbon Fiber and Functional Polymers, Ministry of Education, Beijing University of Chemical Technology, Beijing 100029, China
- Beijing Engineering Research Center of Synthesis and Application of Waterborne Polymer, Beijing University of Chemical Technology, Beijing 100029, China
| | - Lifan He
- Key Laboratory of Carbon Fiber and Functional Polymers, Ministry of Education, Beijing University of Chemical Technology, Beijing 100029, China
- Beijing Engineering Research Center of Synthesis and Application of Waterborne Polymer, Beijing University of Chemical Technology, Beijing 100029, China
| | - Longhai Guo
- Key Laboratory of Carbon Fiber and Functional Polymers, Ministry of Education, Beijing University of Chemical Technology, Beijing 100029, China
- Beijing Engineering Research Center of Synthesis and Application of Waterborne Polymer, Beijing University of Chemical Technology, Beijing 100029, China
| | - Xiaoyu Li
- Key Laboratory of Carbon Fiber and Functional Polymers, Ministry of Education, Beijing University of Chemical Technology, Beijing 100029, China
- Beijing Engineering Research Center of Synthesis and Application of Waterborne Polymer, Beijing University of Chemical Technology, Beijing 100029, China
| | - Teng Qiu
- Key Laboratory of Carbon Fiber and Functional Polymers, Ministry of Education, Beijing University of Chemical Technology, Beijing 100029, China
- Beijing Engineering Research Center of Synthesis and Application of Waterborne Polymer, Beijing University of Chemical Technology, Beijing 100029, China
| | - Xinlin Tuo
- Key Laboratory of Advanced Materials (MOE), Department of Chemical Engineering, Tsinghua University, Beijing 100084, China
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6
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Thermal, Mechanical, and Morphological Characterisations of Graphene Nanoplatelet/Graphene Oxide/High-Hard-Segment Polyurethane Nanocomposite: A Comparative Study. Polymers (Basel) 2022; 14:polym14194224. [PMID: 36236175 PMCID: PMC9572798 DOI: 10.3390/polym14194224] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2022] [Revised: 10/01/2022] [Accepted: 10/04/2022] [Indexed: 11/17/2022] Open
Abstract
The current work investigates the effect of the addition of graphene nanoplatelets (GNPs) and graphene oxide (GO) to high hard-segment polyurethane (75% HS) on its thermal, morphological, and mechanical properties. Polyurethane (PU) and its nanocomposites were prepared with different ratios of GNP and GO (0.25, 0.5, and 0.75 wt.%). A thermal stability analysis demonstrated an enhancement in the thermal stability of PU with GNP and GO incorporated compared to pure PU. Differential Scanning Calorimetry (DSC) showed that both GNP and GO act as heterogeneous nucleation agents within a PU matrix, leading to an increase in the crystallinity of PU. The uniform dispersion and distribution of GNP and GO flakes in the PU matrix were confirmed by SEM and TEM. In terms of the mechanical properties of the PU nanocomposites, it was found that the interaction between PU and GO was better than that of GNP due to the functional groups on the GO's surface. This leads to a significant increase in tensile strength for 0.5 wt.% GNP and GO compared with pure PU. This can be attributed to interfacial interaction between the GO and PU chains, resulting in an improvement in stress transferring from the matrix to the filler and vice versa. This work sheds light on the understanding of the interactions between graphene-based fillers and their influence on the mechanical properties of PU nanocomposites.
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Jiang K, Chen W, Liu X, Wang Y, Han D, Zhang Q. Effect of bio-based polyols and chain extender on the microphase separation structure, mechanical properties and morphology of rigid polyurethane foams. Eur Polym J 2022. [DOI: 10.1016/j.eurpolymj.2022.111572] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Yang R, Liu W, Song N, Li X, Li Z, Luo F, Li J, Tan H. NIR Photothermal-Responsive Shape Memory Polyurethane with Protein-Inspired Aggregated Chymotrypsin-Sensitive Degradable Domains. Macromol Rapid Commun 2022; 43:e2200490. [PMID: 35836315 DOI: 10.1002/marc.202200490] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2022] [Revised: 06/27/2022] [Indexed: 11/05/2022]
Abstract
Biodegradable shape memory polymers are promising biomaterials for stents used in minimally invasive surgical procedures such as intestinal stents. Herein, a series of biodegradable shape memory polyurethanes (SMPUs) containing a novel phenylalanine-derived chain extender PHP were synthesized. Inspired by the fact that the function of biomacromolecules such as proteins is rich and varied because of the multiple combinations of the amino acid in highly evolved biosystems, we found that the sequence distribution of PHP in SMPU would also have a great influence on the phase structure and degradation behavior, especially the difference of surface morphology caused by degradation. Considering that the transition temperature (Ttrans ) of SMPU we obtained is higher than physiological temperature, oxidized carbon black (OCB) with the ability of photothermal conversion was introduced into SMPU, which can not only endow SMPU with near-infrared response shape recovery characteristics, but also enhance phase separation degree and mechanical properties of them. SMPU/OCB composites show excellent shape memory effect and rapid photothermal response, and they can be degraded by chymotrypsin with an adjustable degradation rate. These SMPU/OCB composites show broad potential for application as intestinal stents. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Ruibo Yang
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065, China
| | - Wenkai Liu
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065, China
| | - Nijia Song
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu, 610068, China
| | - Xin Li
- Zhengzhou Research Institute for Abrasives & Grinding Co., Ltd., Zhengzhou, 450001, China
| | - Zhen Li
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065, China
| | - Feng Luo
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065, China
| | - Jiehua Li
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065, China
| | - Hong Tan
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065, China
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Recyclable Shape-Memory Waterborne Polyurethane Films Based on Perylene Bisimide Modified Polycaprolactone Diol. Polymers (Basel) 2021; 13:polym13111755. [PMID: 34072035 PMCID: PMC8198087 DOI: 10.3390/polym13111755] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Revised: 05/21/2021] [Accepted: 05/22/2021] [Indexed: 11/16/2022] Open
Abstract
Currently, much attention is given to the functionality and recyclability of waterborne polyurethane (WPU). Herein, ε-caprolactone was used as a chain extender for grafting onto perylene bisimide (PBI) and 1,4-butanediol (BDO) via ring-opening reactions to obtain PBI-PCL and BDO- PCL. Then, two kinds of WPU, namely PBI-WPU (PWPU) and BDO-WPU (BWPU), were fabricated using PBI-PCL/polytetrahydrofuran ether glycol (PTMG) and BDO-PCL/PTMG, respectively, as mixed soft segments. The properties and appearance of PWPU and BWPU emulsions were analyzed in terms of particle size, zeta potential and TEM images, and the results showed that PWPU emulsions had uniform particle size distribution and decent storage stability. AFM and DMA results revealed that PWPU films possessed a more significant degree of microphase separation and a higher glass transition temperature (Tg) than BWPU films. The PWPU films displayed good shape-memory and mechanical properties, with tensile strength up to 58.25 MPa and elongation at break up to 1241.36%. TGA analysis indicated that PWPU films had better thermal stability than BWPU films. More importantly, the PWPU films could be dissolved in a mixed solvent of acetone/ethanol (v/v = 2:1) at room temperature. The dissolved PWPU could be dispersed in deionized water to prepare waterborne polyurethane again. After the recycling process was repeated three times, the recycled PWPU emulsion still exhibited good storage stability. The recycled PWPU films maintained their original thermal and mechanical properties. Comparing the properties of BWPU and PWPU showed that the soft segment structure had important influence on waterborne polyurethane performance. Therefore, PWPU may have great potential applications in making recycling and shape-memory coating or paint.
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Enhanced Piezoelectric Properties of Poly(Vinylidenefluoride-Co-Trifluoroethylene)/Carbon-Based Nanomaterial Composite Films for Pressure Sensing Applications. Polymers (Basel) 2020; 12:polym12122999. [PMID: 33339168 PMCID: PMC7765614 DOI: 10.3390/polym12122999] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 12/13/2020] [Accepted: 12/14/2020] [Indexed: 12/02/2022] Open
Abstract
In this study, heat and polarization treatments were applied to poly(vinylidenefluoride-co-trifluoroethylene (PVDF-TrFE) films to improve their crystallinity and piezoelectric effect. Carbon-based nanomaterials (CBNs) of multiple dimensions (i.e., modified zero-dimensional (0D) carbon black (OCB), one-dimensional (1D) modified carbon nanotubes (CNT–COOH) and two-dimensional (2D) graphene oxide (GO)) were added to the copolymer to study the effects of different CBN dimensions on the crystallinity and piezoelectric effect of PVDF-TrFE films. Additionally, amphiphilic polymeric dispersants were added to improve the dispersibility of CBNs; the dispersant was synthesized by the amidation, and imidization reactions of styrene-maleic anhydride copolymer (SMAz) and polyoxyalkylene amine (M1000). Polymer solutions with different ratios of CBN to dispersant (z = 10:1, 5:1, 1:1, 1:5, 1:10) were prepared. The enhanced dispersibility enabled the fluorine atoms in the PVDF-TrFE molecular chain to more efficiently form hydrogen bonds with the –COOH group in the CBN, thereby increasing the content of the β crystal phase (the origin of the piezoelectric effect) of the film. Therefore, the resulting film exhibited a higher output voltage on the application side and better sensitivity on the sensing element. The addition of CNT–COOH and polymeric dispersants increased the β-phase content in PVDF-TrFE from 73.6% to 86.4%, which in turn raised the piezoelectric coefficient from 19.8 ± 1.0 to 26.4 ± 1.3 pC/N. The composite film-based pressure sensor also exhibited a high degree of sensitivity, which is expected to have commercial potential in the future.
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Chakraborty I, Chatterjee K. Polymers and Composites Derived from Castor Oil as Sustainable Materials and Degradable Biomaterials: Current Status and Emerging Trends. Biomacromolecules 2020; 21:4639-4662. [PMID: 33222440 DOI: 10.1021/acs.biomac.0c01291] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Recent years have seen rapid growth in utilizing vegetable oils to derive a wide variety of polymers to replace petroleum-based polymers for minimizing environmental impact. Nonedible castor oil (CO) can be extracted from castor plants that grow easily, even in an arid land. CO is a promising source for developing several polymers such as polyurethanes, polyesters, polyamides, and epoxy-polymers. Several synthesis routes have been developed, and distinct properties of polymers have been studied for industrial applications. Furthermore, fillers and fibers, including nanomaterials, have been incorporated in these polymers for enhancing their physical, thermal, and mechanical properties. This review highlights the development of CO-based polymers and their composites with attractive properties for industrial and biomedical applications. Recent advancements in CO-based polymers and their composites are presented along with a discussion on future opportunities for further developments in diverse applications.
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Affiliation(s)
- Indranil Chakraborty
- Department of Materials Engineering, Indian Institute of Science, Bengaluru, Karnataka, India 560012
| | - Kaushik Chatterjee
- Department of Materials Engineering, Indian Institute of Science, Bengaluru, Karnataka, India 560012
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12
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Sun JT, Li JW, Tsou CH, Pang JC, Chung RJ, Chiu CW. Polyurethane/Nanosilver-Doped Halloysite Nanocomposites: Thermal, Mechanical Properties, and Antibacterial Properties. Polymers (Basel) 2020; 12:polym12112729. [PMID: 33213077 PMCID: PMC7698514 DOI: 10.3390/polym12112729] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2020] [Revised: 11/13/2020] [Accepted: 11/15/2020] [Indexed: 01/09/2023] Open
Abstract
In this study, the researchers successfully embellished the surface of halloysite (Ag/HNTs) with silver using halloysite, silver nitrate (AgNO3), and polyvinylpyrrolidone (PVP). The researchers then prepared polyurethane that contained pyridine ring by using 4,4′-diphenylmethane diisocyanate (MDI) and polytetramethylene glycol (PTMG) as the hard chain segment and the soft chain segment of polyurethane (PU), as well as 2,6-pyridinedimethanol (2,6-PDM) as the chain extension agent. This was followed by the preparation of Ag/HNTs/PUs nanocomposite thin films, achieved by mixing Ag/HNTs with different ratios into polyurethane that contains pyridine ring. First, the Ag/HNTs powders were analyzed using energy-dispersive X-ray spectroscopy, X-ray diffraction, and transmission electron microscopy. Subsequently, Fourier-transform infrared spectroscopy was used to examine the dispersibility of Ag/HNTs in PU, whereas the thermal stability and the viscoelasticity of Ag/HNTs/PU were examined using thermal gravimetric analysis, differential scanning calorimetry, and dynamic mechanical analysis. When the mechanical properties of Ag/HNTs/PU were tested using a universal strength tester, the results indicated a maximum increase of 109.5% in tensile strength. The researchers then examined the surface roughness and the hydrophobic ability of the Ag/HNTs/PU thin films by using atomic force microscopy and water contact angle. Lastly, antibacterial testing on Escherichia coli revealed that when the additive of Ag/HNTs reached 2.0 wt%, 99.3% of the E. coli were eliminated. These results indicated that the addition of Ag/HNTs into PU could enhance the thermal stability, mechanical properties, and antibacterial properties of PU, implying the potential of Ag/HNTs-02 as biomedicine material.
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Affiliation(s)
- Jui-Ting Sun
- Department of Materials Science and Engineering, National Taiwan University of Science and Technology, Taipei 10607, Taiwan; (J.-T.S.); (J.-W.L.)
| | - Jia-Wun Li
- Department of Materials Science and Engineering, National Taiwan University of Science and Technology, Taipei 10607, Taiwan; (J.-T.S.); (J.-W.L.)
| | - Chi-Hui Tsou
- Material Corrosion and Protection Key Laboratory of Sichuan Province, College of Materials Science and Engineering, Sichuan University of Science and Engineering, Zigong 643000, China;
| | - Jen-Chieh Pang
- Department of Biotechnology, Van-Nung University, Tao-Yuan 32061, Taiwan;
| | - Ren-Jei Chung
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, Taipei 10608, Taiwan;
| | - Chih-Wei Chiu
- Department of Materials Science and Engineering, National Taiwan University of Science and Technology, Taipei 10607, Taiwan; (J.-T.S.); (J.-W.L.)
- Correspondence: ; Tel.: +886-2-2737-6521; Fax: +886-2-2737-6544
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Chiu CW, Li JW, Huang CY, Yang SS, Soong YC, Lin CL, Lee JCM, Lee Sanchez WA, Cheng CC, Suen MC. Controlling the Structures, Flexibility, Conductivity Stability of Three-Dimensional Conductive Networks of Silver Nanoparticles/Carbon-Based Nanomaterials with Nanodispersion and their Application in Wearable Electronic Sensors. NANOMATERIALS (BASEL, SWITZERLAND) 2020; 10:E1009. [PMID: 32466225 PMCID: PMC7281189 DOI: 10.3390/nano10051009] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/25/2020] [Revised: 05/20/2020] [Accepted: 05/21/2020] [Indexed: 01/17/2023]
Abstract
This research has successfully synthesized highly flexible and conductive nanohybrid electrode films. Nanodispersion and stabilization of silver nanoparticles (AgNPs) were achieved via non-covalent adsorption and with an organic polymeric dispersant and inorganic carbon-based nanomaterials-nano-carbon black (CB), carbon nanotubes (CNT), and graphene oxide (GO). The new polymeric dispersant-polyisobutylene-b-poly(oxyethylene)-b-polyisobutylene (PIB-POE-PIB) triblock copolymer-could stabilize AgNPs. Simultaneously, this stabilization was conducted through the addition of mixed organic/inorganic dispersants based on zero- (0D), one- (1D), and two-dimensional (2D) nanomaterials, namely CB, CNT, and GO. Furthermore, the dispersion solution was evenly coated/mixed onto polymeric substrates, and the products were heated. As a result, highly conductive thin-film materials (with a surface electrical resistance of approximately 10-2 Ω/sq) were eventually acquired. The results indicated that 2D carbon-based nanomaterials (GO) could stabilize AgNPs more effectively during their reductNion and, hence, generate particles with the smallest sizes, as the COO- functional groups of GO are evenly distributed. The optimal AgNPs/PIB-POE-PIB/GO ratio was 20:20:1. Furthermore, the flexible electrode layers were successfully manufactured and applied in wearable electronic sensors to generate electrocardiograms (ECGs). ECGs were, thereafter, successfully obtained.
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Affiliation(s)
- Chih-Wei Chiu
- Department of Materials Science and Engineering, National Taiwan University of Science and Technology, Taipei 10607, Taiwan; (J.-W.L.); (C.-Y.H.); (S.-S.Y.); (Y.-C.S.); (C.-L.L.); (J.C.-M.L.); (W.A.L.S.)
| | - Jia-Wun Li
- Department of Materials Science and Engineering, National Taiwan University of Science and Technology, Taipei 10607, Taiwan; (J.-W.L.); (C.-Y.H.); (S.-S.Y.); (Y.-C.S.); (C.-L.L.); (J.C.-M.L.); (W.A.L.S.)
| | - Chen-Yang Huang
- Department of Materials Science and Engineering, National Taiwan University of Science and Technology, Taipei 10607, Taiwan; (J.-W.L.); (C.-Y.H.); (S.-S.Y.); (Y.-C.S.); (C.-L.L.); (J.C.-M.L.); (W.A.L.S.)
| | - Shun-Siang Yang
- Department of Materials Science and Engineering, National Taiwan University of Science and Technology, Taipei 10607, Taiwan; (J.-W.L.); (C.-Y.H.); (S.-S.Y.); (Y.-C.S.); (C.-L.L.); (J.C.-M.L.); (W.A.L.S.)
| | - Yu-Chian Soong
- Department of Materials Science and Engineering, National Taiwan University of Science and Technology, Taipei 10607, Taiwan; (J.-W.L.); (C.-Y.H.); (S.-S.Y.); (Y.-C.S.); (C.-L.L.); (J.C.-M.L.); (W.A.L.S.)
| | - Chih-Lung Lin
- Department of Materials Science and Engineering, National Taiwan University of Science and Technology, Taipei 10607, Taiwan; (J.-W.L.); (C.-Y.H.); (S.-S.Y.); (Y.-C.S.); (C.-L.L.); (J.C.-M.L.); (W.A.L.S.)
| | - Jimmy Chi-Min Lee
- Department of Materials Science and Engineering, National Taiwan University of Science and Technology, Taipei 10607, Taiwan; (J.-W.L.); (C.-Y.H.); (S.-S.Y.); (Y.-C.S.); (C.-L.L.); (J.C.-M.L.); (W.A.L.S.)
| | - William Anderson Lee Sanchez
- Department of Materials Science and Engineering, National Taiwan University of Science and Technology, Taipei 10607, Taiwan; (J.-W.L.); (C.-Y.H.); (S.-S.Y.); (Y.-C.S.); (C.-L.L.); (J.C.-M.L.); (W.A.L.S.)
| | - Chih-Chia Cheng
- Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology, Taipei 10607, Taiwan;
| | - Maw-Cherng Suen
- Department of Fashion Business Administration, LEE-MING Institute of Technology, New Taipei City 24305, Taiwan;
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Ahmadi Y, Kim KH. Functionalization and customization of polyurethanes for biosensing applications: A state-of-the-art review. Trends Analyt Chem 2020. [DOI: 10.1016/j.trac.2020.115881] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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15
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Kéki S. Functional Polyurethanes-In Memory of Prof. József Karger-Kocsis. Polymers (Basel) 2020; 12:polym12020434. [PMID: 32069776 PMCID: PMC7077621 DOI: 10.3390/polym12020434] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2020] [Accepted: 02/10/2020] [Indexed: 11/16/2022] Open
Affiliation(s)
- Sándor Kéki
- Department of Applied Chemistry, Faculty of Science and Technology, University of Debrecen, H-4032 Debrecen, Egyetem tér 1., Hungary
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Li J, Cheng Y, Lee H, Wang C, Chiu C, Suen M. Synthesis and properties of castor oil‐based polyurethane containing short fluorinated segment. J Appl Polym Sci 2020. [DOI: 10.1002/app.49062] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Jia‐Wun Li
- Department of Materials Science and EngineeringNational Taiwan University of Science and Technology Taipei Taiwan Republic of China
| | - Yung‐Hsin Cheng
- Department of Materials Science and EngineeringNational Taiwan University of Science and Technology Taipei Taiwan Republic of China
| | - Hsun‐Tsing Lee
- Department of Materials Science and EngineeringVanung University Taoyuan Taiwan Republic of China
| | - Chyung‐Chyung Wang
- Department of Textile EngineeringChinese Culture University Taipei Taiwan Republic of China
| | - Chih‐Wei Chiu
- Department of Materials Science and EngineeringNational Taiwan University of Science and Technology Taipei Taiwan Republic of China
| | - Maw‐Cherng Suen
- Department of Fashion Business AdministrationLEE‐MING Institute of Technology New Taipei City Taiwan Republic of China
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Meng Y, Lv P, Liu Q, Liao B, Pang H, Liu W. Preparation and characterization of soybean oil-based waterborne polyurethane/acrylate hybrid emulsions for self-matting coatings. NEW J CHEM 2019. [DOI: 10.1039/c9nj04538d] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This work aims to explore the feasibility of self-matting coatings based on soybean oil.
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Affiliation(s)
- Yeyun Meng
- Guangzhou Institute of Chemistry
- Chinese Academy of Sciences
- Guangzhou 510650
- China
- School of Chemistry and Chemical Engineering
| | - Peng Lv
- Guangzhou Institute of Chemistry
- Chinese Academy of Sciences
- Guangzhou 510650
- China
- School of Chemistry and Chemical Engineering
| | - Qi Liu
- Guangzhou Institute of Chemistry
- Chinese Academy of Sciences
- Guangzhou 510650
- China
- School of Chemistry and Chemical Engineering
| | - Bing Liao
- Guangdong Academy of Sciences
- Guangzhou 510650
- China
| | - Hao Pang
- Guangzhou Institute of Chemistry
- Chinese Academy of Sciences
- Guangzhou 510650
- China
| | - Weiqu Liu
- Guangzhou Institute of Chemistry
- Chinese Academy of Sciences
- Guangzhou 510650
- China
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Li JW, Cheng YH, Lee HT, Tsen WC, Chiu CW, Suen MC. Properties and degradation of castor oil-based fluoridated biopolyurethanes with different lengths of fluorinated segments. RSC Adv 2019; 9:31133-31149. [PMID: 35529409 PMCID: PMC9072421 DOI: 10.1039/c9ra04654b] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2019] [Accepted: 09/09/2019] [Indexed: 12/12/2022] Open
Abstract
To develop a durable, biodegradable polymer, this study successfully synthesized a castor-oil-based prepolymer by using methylene diphenyl diisocyanate as a hard segment, polycaprolactone as a soft segment, and castor oil as a functional monomer. We added perfluorinated alkyl segments with varying chain lengths into the castor-oil-based polymer to synthesize castor-oil-based fluoridated biopolyurethanes (FCOPUs) with different fluorinated segment lengths. The castor-oil-based polyurethanes with different fluorinated segment lengths had similar molecular weights, which enabled accurate analysis of the effect of the lengths of fluorinated segments on FCOPUs. Nuclear magnetic resonance (NMR) was used to perform 1H NMR, 19F NMR, 19F–19F COSY, 1H–19F COSY, and HMBC analyses on the FCOPU structures. The results of Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy curve fitting verified the interaction between C–F⋯H–N and C–F⋯C
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O. This interaction increased as the fluorinated segments became longer. Regarding the thermal properties of the FCOPUs, the thermogravimetric analysis, differential scanning calorimetry, and dynamic mechanical analysis results revealed that long fluorinated segments were associated with increased thermal stability in the FCOPUs. The atomic force microscopy and tensile strength test suggested that long fluorinated segments contained in the FCOPUs increased the degree of phase separation and tensile strength in FCOPUs. Finally, we dipped the FCOPUs in a 3 wt% NaOH solution, calculated the weight loss of the FCOPUs, and observed their surface structure by using scanning electron microscopy. To develop a durable, biodegradable polymer, this study successfully synthesized a castor-oil-based prepolymer by using methylene diphenyl diisocyanate as a hard segment, polycaprolactone as a soft segment, and castor oil as a functional monomer.![]()
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Affiliation(s)
- Jia-Wun Li
- Department of Materials Science and Engineering
- National Taiwan University of Science and Technology
- Taipei
- ROC
| | - Yung-Hsin Cheng
- Department of Materials Science and Engineering
- National Taiwan University of Science and Technology
- Taipei
- ROC
| | - Hsun-Tsing Lee
- Department of Materials Science and Engineering
- Vanung University
- Taoyuan
- ROC
| | - Wen-Chin Tsen
- Department of Fashion and Design
- Lee-Ming Institute of Technology
- New Taipei City
- ROC
| | - Chih-Wei Chiu
- Department of Materials Science and Engineering
- National Taiwan University of Science and Technology
- Taipei
- ROC
| | - Maw-Cherng Suen
- Department of Fashion Business Administration
- Lee-Ming Institute of Technology
- New Taipei City
- ROC
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