Article
Chemistry, Applied
Xixi Gu, Tiantian Gao, Xiangping Meng, Yun Zhu, Guiyou Wang
Summary: Self-assemblies of perfluoropolyether based copolymers were used to enhance the surface hydrophobicity of polyurethane, leading to significant increase in water contact angle. This method shows potential applications in protecting polymeric materials, especially in providing durable water repellency for cotton fabrics.
PROGRESS IN ORGANIC COATINGS
(2022)
Article
Polymer Science
Andrew P. Nowak, Adam F. Gross, Elena Sherman, April R. Rodriguez, Michael Ventuleth, Ashley M. Nelson, Adam Sorensen, Russell Mott, Jason Graetz
Summary: A series of PFPE/PEG segmented polyurethanes were found to exhibit micron-scale phase separation with continuous hydrophilic and discrete hydrophobic domains. These materials possess tough elastomeric properties and wear resistance, making them promising for applications in energy, environmental technology, self-healing applications, and biotechnology.
Article
Polymer Science
Tianxiang Chen, Qingqing Zhang, Xianghong Xu, Yun Zhu, Guiyou Wang
Summary: A series of fluorinated waterborne polyurethane (FWPU) with excellent storage stability and superior hydrophobic properties were synthesized. The introduction of PFPE increased the hardness and tensile strength of the films significantly, while also providing excellent water resistance and coating properties. This work provides a new type of bio-based waterborne polyurethane materials with potential applications in the coating fields.
POLYMERS FOR ADVANCED TECHNOLOGIES
(2022)
Article
Polymer Science
Liying Wei, Tugba D. Caliskan, Philip J. Brown, Igor Luzinov
Summary: FOPUs based on PFPE were synthesized as low-surface-energy materials and can serve as safer alternatives to long-chain perfluoroalkyl substances/additives. When added to PET films, these FOPUs significantly improve water and oil repellency of the thermoplastic, with the best performance achieved by an oligomeric additive terminated with CF3 groups.
Article
Materials Science, Multidisciplinary
Yanlong Zhao, Yifu Qian, Haimang Wang, Weiwei Zhao, Jing Zhao, Hongyu Zhang
Summary: In this study, a branched polyelectrolyte polymer (PEI-PMPC) was successfully synthesized and applied to the biocompatible polyurethane (PU) surface. The modified PU surface showed reduced adhesion of bovine serum albumin, Escherichia coli, Staphylococcus aureus, platelets, and red blood cells. This bioinspired coating could be a promising surface functionalization strategy for biomedical implants.
ACS APPLIED POLYMER MATERIALS
(2023)
Article
Polymer Science
Ruifang Zhao, Pengfei Tan, Yanting Han, Feng Yang, Yidong Shi, Puxin Zhu, Lin Tan
Summary: This study verified the application prospects of berberine hydrochloride in antibacterial fibers, the coating modified polyurethane fiber showed good antibacterial properties, mechanical properties, and surface wettability, and is expected to be applied in the biomedical field.
Article
Biochemistry & Molecular Biology
Xuenan Sun, Xinze Yang, Jiajing Zhang, Bin Shang, Pei Lyu, Chunhua Zhang, Xin Liu, Liangjun Xia
Summary: The reinforcement of polymer nanocomposites can be achieved by selecting the appropriate fabrication method, surface modification, and filler orientation. In this study, thermoplastic polyurethane (TPU) composite films with excellent mechanical properties were prepared using nonsolvent-induced phase separation method with ternary solvents and 3-Glycidyloxypropyltrimethoxysilane-modified cellulose nanocrystals (GLCNCs). The incorporation of GLCNCs in TPU improved its tensile strain, toughness, and elastic recovery rate. Alignment of CNCs in the composites further enhanced their mechanical properties. This study presents a facile and effective strategy for fabricating mechanically enhanced TPU composites.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Chemistry, Applied
Phanthanyaphon Tsupphayakorn-aek, Anutida Suwan, Tulyapong Tulyapitak, Nitinart Saetung, Anuwat Saetung
Summary: A novel UV-curable waterborne polyurethane-acrylate (WPUA) was successfully prepared via sequential emulsion polymerization. The WPUA exhibited good stability, film formation and provided good wettability and thermal properties. The UV-cured WPUA films showed improved mechanical properties and water resistance.
PROGRESS IN ORGANIC COATINGS
(2022)
Article
Polymer Science
Panpan Peng, Jianjun Yang, Qingyun Wu, Mingyuan Wu, Jiuyi Liu, Jianan Zhang
Summary: The N-halamine precursor AHM was used as a chain extender in the preparation of N-halamine polyurethane films, improving their thermodynamic and mechanical properties. The chlorinated PU-AHM-Cl films showed significantly enhanced antibacterial properties against Escherichia coli and Staphylococcus aureus, offering potential applications in microbiological protection materials and related fields.
Article
Engineering, Multidisciplinary
Chengwei Liu, Tao Zhang, Yuxin Luo, Yixuan Wang, Jiacheng Li, Ting Ye, Ruifeng Guo, Pingan Song, Jiu Zhou, Hao Wang
Summary: This study developed a novel composite coating for PU sponge, which can improve its flame retardant and antibacterial properties without compromising its elasticity and flexibility. The coated PU sponge showed a 32% reduction in peak heat release rate during combustion testing and demonstrated a killing rate of 99% against Staphylococcus aureus.
COMPOSITES PART B-ENGINEERING
(2021)
Article
Biochemistry & Molecular Biology
Jiangxun Dou, Jiaoyan Liu, Yan Wang, Lifei Zhi, Jixian Shen, Guoyong Wang
Summary: This paper reports the synthesis of a novel quaternary surfactant containing a hydroxyethyl group (PFPE-C) and its surface properties in aqueous solution. The study confirms that surfactants containing hydroxyethyl groups efficiently reduce the surface tension of water and that fluorocarbon surfactants have better surface activity than hydrocarbon surfactants with similar structures. The properties of PFPE-C aqueous solutions, including micellization, aggregation, air-water interfacial adsorption, and wettability, have been systematically investigated. Primary biodegradation results indicate that 19% of PFPC-C can be degraded within one week.
Article
Chemistry, Applied
Zhe Sun, Jiating Wen, Wenkai Wang, Haojun Fan, Yi Chen, Jun Yan, Jun Xiang
Summary: A novel reactive compatibilizer PMHS-g-AEM was synthesized and characterized for its potential in compatibilizing nonpolar PDMS and polar E/SVTPU systems. Optimum dosages of 2 wt% and 4 wt% were found to significantly improve the microstructures and mechanical properties of the blends, demonstrating excellent compatibilization effects.
PROGRESS IN ORGANIC COATINGS
(2021)
Article
Chemistry, Applied
Shiping Wang, Rui Huang, Kun Ren, Lushen Shen, Xiang Li, Ganchang Lei, Lijuan Shen, Yingying Zhan, Ying Zheng, Lilong Jiang
Summary: This paper presents a study on the preparation of an inorganic/organic composite coating for urea fertilizer using a biodegradable polyurethane filled with Na-bentonite. The porous structures of the filler were tuned by varying the molecular weights of the PEGs, resulting in adjustable water swelling and mechanical properties of the composites. The water swelling property was found to be critical for controlling the early stage of nutrient release, while the mechanical properties were important for the longevity of nutrient release from the CRFs.
PROGRESS IN ORGANIC COATINGS
(2023)
Article
Chemistry, Physical
Muhammad Naveed, Muhammad Rabnawaz
Summary: Polysiloxanes are becoming a new trend in self-cleaning applications due to their low-cost and environmentally friendly nature. Our experiment demonstrates that telechelic polysiloxanes outperform hemi-telechelic polysiloxanes in epoxy-based anti-smudge coatings by offering excellent repellency against difficult to repel liquids, providing robust guidelines for selecting suitable polysiloxanes for self-cleaning applications, thereby advancing science and innovation in the field.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Chemistry, Physical
Hui Zhao, Wei-Chen Gao, Qing Li, Muhammad Rafiullah Khan, Guo-Hua Hu, Yang Liu, Wei Wu, Chong-Xing Huang, Robert K. Y. Li
Summary: This review presents the recent preparation methods for superhydrophobic polyurethane (SHPU) and discusses its potential applications in various fields.
ADVANCES IN COLLOID AND INTERFACE SCIENCE
(2022)
Article
Polymer Science
Yuanzhang Jiang, Xuyi Wang, Yanting Han, Dakai Gong, Yingchun Gu, Lin Tan
Summary: In this study, FeCl3 and poly(acrylic acid) (PAA) were doped into waterborne polyurethanes (WPUs) to create multifunctional materials with self-healing and antimicrobial properties. WPU/Fe/PAA-5.5, containing 5.5 wt % PAA, exhibited excellent mechanical properties, strong self-healing capabilities, and an impressive antimicrobial rate of over 90%. These supramolecular films were also highly recyclable through hot-pressing.
Article
Polymer Science
Longyu Tian, Min Wang, Guangming Liao, Baoliang Liu, Sujuan Zhang, Yucheng Sun, Zhen Meng, Jintao Zhang, Zaijun Lu
Summary: Two kinds of benzoxazine monomers were synthesized and used to prepare polybenzoxazine anion exchange membranes (AEMs) with quaternary ammonium functionalization. The LQPBZ AEM exhibited better ion conductivity and alkaline stability.
Article
Polymer Science
Claire A. Lemarchand
Summary: This study investigates the shock behavior of three different polymers through molecular dynamics simulations. The results reveal specificities in the shock behavior of polymers, including deviations from the linear relation between shock velocity and particle velocity, as well as differences in shear stress relaxation behind the shock front. It is found that the deviation of the Hugoniot locus is related to the change in the relative contribution of bonding and non-bonding potential energies, while polymers with higher glass transition temperatures exhibit slower shear stress relaxation.
Article
Polymer Science
Zengquan Liu, Xiaochun Yin, He Zhang, Shuo Gao, Qinglin Kuang, Yanhong Feng
Summary: A powder solid-state extension (PSSE) technology was proposed to address the high melt viscosity issue of UHMWPE. By uniaxial extension and sintering in the solid state, a highly self-reinforced material was prepared. X-ray diffraction and scattering techniques were used to study the structural evolution during the PSSE process, and a solid-phase induced transformation model was established.
Article
Polymer Science
Zhike Li, Anyu Luo, Rui Zhou, Xin Li, Haiyan Li
Summary: A novel high temperature resistance IL@SiO2 nanocapsules were successfully prepared and their friction and wear properties in PA6 composites were studied. The addition of IL@SiO2 nanocapsules reduced the friction coefficient and wear rate without affecting the mechanical properties of PA6. The synergy between the IL core and SiO2 wall in the nanocapsules improved the self-lubricating performance of the PA6 composites.
Article
Polymer Science
Xin Liu, Xuhong Guo, Qi Liao
Summary: In this study, an algorithm for accurately estimating viscosity is developed using molecular dynamics simulations and the Green-Kubo formula. This algorithm can be applied to complex systems with long correlations, such as macromolecular and biological simulation systems.
Article
Polymer Science
Hao Pu, Yun-Lei Hou, Jing -Zhou Chen, Dong -Lin Zhao
Summary: The use of modified graphene improves the interfacial adherence of carbon fibers to epoxy resin, resulting in enhanced interfacial and bending properties of CF and matrix in CF/EP composites, as well as increased interlaminar shear strength and flexural strength.
Article
Polymer Science
Wei-Chung Ke, Jin-Wei Lin, Manohar Reddy Busireddy, Yueh-Hsing Lee, Jiun-Tai Chen, Chain-Shu Hsu
Summary: This study introduces a crosslinkable monomer, TAIC, to synthesize three crosslinked polyimide films, which exhibit improved thermal, mechanical, and dielectric properties. The introduction of TAIC enhances the tensile strength, reduces the dielectric constant and dielectric loss, and decreases the coefficient of thermal expansion of the polyimide films.
Article
Polymer Science
Alex Kwasi Kumi, Ruiling Fan, Ye Chen, Yumei Zhang
Summary: The difference in leaching of amylopectin from cellulose/amylopectin/1-butyl-3-methylimidazolium chloride ([Bmim][Cl]) blends during regeneration in water and aqueous ethanol has been studied. Molecular dynamics simulations showed that the dissolution and regeneration mechanisms of amylopectin in [Bmim][Cl] are similar to cellulose in ionic liquids. Water regeneration leads to weak electrostatic interactions, resulting in high leaching of amylopectin. In contrast, ethanol-water interactions enhance electrostatic interactions among amylopectin chains, limiting amylopectin leaching in aqueous ethanol.
Article
Polymer Science
Xi Zeng, Junwei Zhou, Junbiao Peng, Chunsheng Zhang, Danling Wang, Yihu Song, Qiang Zheng
Summary: This study utilizes an oligomer deep eutectic solvent (DES) based on polyethylene glycol to regulate the vulcanization kinetics of rubber. The results show that the DES can accelerate vulcanization at low temperatures without affecting the crosslinking density and Mullins effect.
Article
Polymer Science
Qianqian Yue, Yongfei Peng, Xingjian Liu, Aihua He, Huarong Nie
Summary: The addition of metal deactivators can effectively suppress the aging of TBIR, prolong its lifespan, and have no negative effects on its physical and processing properties. These research findings are of great importance for improving the stability and aging resistance of polymers.
Article
Polymer Science
J. Gomez-Caturla, J. Ivorra-Martinez, R. Tejada-Oliveros, V Moreno, D. Garcia-Garcia, R. Balart
Summary: This work focuses on the development of environmentally friendly PLA formulations by using different esters derived from geraniol as plasticizers. The results show that these esters have good compatibility with PLA, and they can effectively enhance the elongation and plasticity of PLA, reduce its glass transition temperature, and slightly improve its water absorption capabilities.
Article
Polymer Science
Dandan Li, Zhaohui Lu, Zhao Ke, Ke Xu, Fengna Dai, Youhai Yu, Guangtao Qian, Chunhai Chen
Summary: In this study, cross-linked PI aerogel membranes with low dielectric constant and high moisture resistance were prepared by co-polymerization and scraping coating technology. The incorporation of fluorinated blocks and benzimidazole ring structures resulted in novel PI aerogel membranes with fascinating dielectric properties and outstanding moisture resistance.
Article
Polymer Science
Zhaoyang Chu, Qing Zhang, Haihua Luo, Han Zhou, Fapei Zhang, Wei Chen, Wenhua Zhang
Summary: Multi-physical fields solution processing strategy is a universal and facile method for preparing various conjugated polymer films and high-performance devices. In this study, we employed a combined microfluidic flow and ultrasonication strategy (FU) for processing CP solutions, and found a pronounced synergetic effect in promoting the pre-ordering of chains in solution. The conformation order and anisotropy of the solution were revealed through various characterizations. A non-classical nucleation model for polymer crystallization in non-equilibrium solution processing was confirmed. The roles of microfluidic flow and ultrasonication in chain aggregation and crystallization were addressed through multi-physical simulations. Compared to pristine solutions, the FU strategy showed improved solution anisotropy and crystallization kinetics, resulting in higher crystallinity in films and increased mobilities in OFET devices. The FU processing strategy provides a universal approach for regulating chain conformation and aggregation in conjugated polymer solutions.