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Pinilla-Peñalver E, Cantero D, Romero A, Sánchez-Silva L. Exploring the Impact of the Synthesis Variables Involved in the Polyurethane Aerogels-like Materials Design. Gels 2024; 10:209. [PMID: 38534627 DOI: 10.3390/gels10030209] [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: 02/27/2024] [Revised: 03/13/2024] [Accepted: 03/15/2024] [Indexed: 03/28/2024] Open
Abstract
This research presents a novel approach to synthesising polyurethane (PUR)-based aerogels at the pilot scale, optimizing synthesis variables such as the gelation solvent, solids content, chain extender/isocyanate ratio, and dispersion mode. The solids content (2-11 wt.%) is the parameter with the most influence on the density of the aerogels, with a clear decrease in this property as the solids content decreases. On the other hand, it was demonstrated that minimizing the excess of ethylenediamine (used as chain extender) in relation to the isocyanate is a valuable consideration to improve the thermal conductivity of the aerogel. Related to the chain extender/isocyanate ratio, a compromise situation where the initial isocyanate reacts almost completely is crucial. Fourier-transform infrared spectroscopy was used to conduct such monitoring during the reaction. Once the conditions were optimised, the aerogel showing improved properties was synthesised using ethyl acetate as the gelling solvent, a 3.7 wt.% solids content, an ethylenediamine/isocyanate ratio of 0.20, and sonication as the dispersion mode, attaining a thermal conductivity of 0.030 W m-1 K-1 and a density of 0.046 g cm-3. Therefore, the synthesized aerogel emerges as a promising candidate for use in the construction and automotive industries.
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Affiliation(s)
- Esther Pinilla-Peñalver
- Department of Chemical Engineering, University of Castilla-La Mancha, Avda. Camilo José Cela 12, 13071 Ciudad Real, Spain
| | - Darío Cantero
- Department of Chemical Engineering, University of Castilla-La Mancha, Avda. Camilo José Cela 12, 13071 Ciudad Real, Spain
| | - Amaya Romero
- Department of Chemical Engineering, University of Castilla-La Mancha, Avda. Camilo José Cela 12, 13071 Ciudad Real, Spain
| | - Luz Sánchez-Silva
- Department of Chemical Engineering, University of Castilla-La Mancha, Avda. Camilo José Cela 12, 13071 Ciudad Real, Spain
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Zhou Y, Liu Y, Xin B, Qin Y, Kuang G. Preparation and Properties of a Novel Cross-Linked Network Waterborne Polyurethane for Wood Lacquer. Polymers (Basel) 2023; 15:polym15092193. [PMID: 37177339 PMCID: PMC10181243 DOI: 10.3390/polym15092193] [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: 03/05/2023] [Revised: 04/18/2023] [Accepted: 04/29/2023] [Indexed: 05/15/2023] Open
Abstract
Waterborne polyurethane (WPU) is a waterborne coating with excellent physicochemical properties. Its deficiencies of water resistance, chemical resistance, staining, and hardness have limited the wide application of polyurethane in the wood lacquer market. In this study, polycarbonate diols (PCDL) were used as soft segments and WPCU was modified by cross-linking using Trimethylolpropane (TMP) to prepare polycarbonate type WPU (WPCU) with cross-linked network structure. The new wood lacquer was prepared by adding various additives and tested by applying it on wood board. The successful synthesis of WPCU was determined by FTIR testing, and the cross-linking degree of WPCU was probed by low-field NMR. The viscosity of the cross-linked WPCU emulsion showed a decreasing trend compared to the uncross-linked WPCU emulsion, and WPCU-2 had the smallest particle size. Compared with the uncrosslinked WPCU film, the crosslinked WPCU film had lower water absorption (2.2%), higher water contact angle (72.7°), excellent tensile strength (44.02 MPa), higher thermomechanical, and better water and alcohol resistance. The effect of crosslinker content on the microphase separation of WPCU chain segments on the surface roughness of the film was investigated by SEM. The wood paint prepared by WPCU emulsion has good dry heat resistance, chemical resistance, and adhesion, and the hardness of the wood paint when the TMP content is 3% reaches H. It also has good resistance to sticky stains, which can be used to develop new wood lacquer.
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Affiliation(s)
- Yuanyuan Zhou
- College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Shanghai 201620, China
| | - Yan Liu
- College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Shanghai 201620, China
| | - Binjie Xin
- College of Textile and Fashion Engineering, Shanghai University of Engineering Science, Shanghai 201620, China
| | - Ying Qin
- College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Shanghai 201620, China
| | - Guankun Kuang
- College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Shanghai 201620, China
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Xiong X, Li X, Zhu Z, Zhang E, Shi J, Lu M. Antibacterial and Alkali-responsive Cationic Waterborne Polyurethane Based on Modification of Aloe Emodin. Chem Res Chin Univ 2022; 39:266-275. [PMID: 35966397 PMCID: PMC9361887 DOI: 10.1007/s40242-022-2179-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Accepted: 06/24/2022] [Indexed: 11/28/2022]
Abstract
Cationic water-based polyurethane(CWPU) was synthesized to explore aloe-emodin modifies to obtain CWPU materials with better comprehensive performance. It provides a simple way to synthesize antibacterial waterborne polyurethane, which is to introduce the end-blocking group of herbal extracts into the structure. It contains synergistic antibacterial effect of herbal antibacterial and quaternary ammonium ion on Escherichia coli. It makes the material resist the erosion of bacterial, and increase the service life of materials. When the pH value of the environment changes, the UV absorbance of the aloe-emodin modified cationic water-based polyurethane(AE-CWPU) also changes. Therefore, within a certain detection range, AE-CWPU has great applications in the field of smart response materials. The modified thermodynamic properties have been improved, and the mechanical properties basically maintained the maximum stress, and the elongation at break was reduced.
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Affiliation(s)
- Xiaoyan Xiong
- Guangzhou Institute of Chemistry, Chinese Academy of Sciences, Guangzhou, 510650 P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049 China
| | - Xiaobin Li
- Guangzhou Institute of Chemistry, Chinese Academy of Sciences, Guangzhou, 510650 P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049 China
| | - Zifan Zhu
- Guangzhou Institute of Chemistry, Chinese Academy of Sciences, Guangzhou, 510650 P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049 China
| | - Ending Zhang
- Guangzhou Institute of Chemistry, Chinese Academy of Sciences, Guangzhou, 510650 P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049 China
| | - Jun Shi
- Guangzhou Institute of Chemistry, Chinese Academy of Sciences, Guangzhou, 510650 P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049 China
- New Materials Research Institute of CASCHEM(Chongqing) Co., Ltd., Chongqing, 400714 China
| | - Mangeng Lu
- Guangzhou Institute of Chemistry, Chinese Academy of Sciences, Guangzhou, 510650 P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049 China
- Guangdong Provincial Key Laboratory of Organic Polymer Materials for Electronics, Guangzhou, 510650 China
- CASH GCC Shaoguan Research Institute of Advanced Materials, Shaoguan, 512440 China
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Blending polar rubber with polyurethane to construct self-healing rubber with multiple hydrogen bond networks. POLYMER 2022. [DOI: 10.1016/j.polymer.2022.124768] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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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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Jing T, Heng X, Guifeng X, Ling C, Pingyun L, Xiaode G. Highly stretchable, high efficiency room temperature self-healing polyurethane adhesive based on hydrogen bonds – applicable to solid rocket propellants. Polym Chem 2021. [DOI: 10.1039/d1py00439e] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The introduction of weak hydrogen bonds based on the isophorone structure enables the polymer to have high stretchability and self-healing ability at room temperature to heal propellant damage.
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Affiliation(s)
- Tu Jing
- National Special Superfine Powder Engineering Research Center of China
- Nanjing University of Science and Technology
- Nanjing
- P. R. China
| | - Xu Heng
- National Special Superfine Powder Engineering Research Center of China
- Nanjing University of Science and Technology
- Nanjing
- P. R. China
| | - Xiang Guifeng
- National Special Superfine Powder Engineering Research Center of China
- Nanjing University of Science and Technology
- Nanjing
- P. R. China
| | - Chen Ling
- National Special Superfine Powder Engineering Research Center of China
- Nanjing University of Science and Technology
- Nanjing
- P. R. China
| | - Li Pingyun
- National Special Superfine Powder Engineering Research Center of China
- Nanjing University of Science and Technology
- Nanjing
- P. R. China
| | - Guo Xiaode
- National Special Superfine Powder Engineering Research Center of China
- Nanjing University of Science and Technology
- Nanjing
- P. R. China
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Li S, Deng Y, Fu Z, Zhang H, Zhou C, Jiao Y. Hydroxyl‐terminated polybutadiene based waterborne polyurethane acrylate emulsions: Synthesis, characterization, and damping property. J Appl Polym Sci 2020. [DOI: 10.1002/app.50300] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Songsong Li
- Engineering Research Center of Synthetic Resin and Special Fiber, Ministry of Education, School of Chemical Engineering Changchun University of Technology Changchun China
| | - Yunjiao Deng
- Engineering Research Center of Synthetic Resin and Special Fiber, Ministry of Education, School of Chemical Engineering Changchun University of Technology Changchun China
| | - Zhongyu Fu
- Engineering Research Center of Synthetic Resin and Special Fiber, Ministry of Education, School of Chemical Engineering Changchun University of Technology Changchun China
| | - Huixuan Zhang
- Engineering Research Center of Synthetic Resin and Special Fiber, Ministry of Education, School of Chemical Engineering Changchun University of Technology Changchun China
| | - Chao Zhou
- Engineering Research Center of Synthetic Resin and Special Fiber, Ministry of Education, School of Chemical Engineering Changchun University of Technology Changchun China
| | - Yuhang Jiao
- Engineering Research Center of Synthetic Resin and Special Fiber, Ministry of Education, School of Chemical Engineering Changchun University of Technology Changchun China
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Self-healing Polyurethane Elastomer Based on Molecular Design: Combination of Reversible Hydrogen Bonds and High Segment Mobility. J Inorg Organomet Polym Mater 2020. [DOI: 10.1007/s10904-020-01697-1] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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