Article
Polymer Science
Yingting Yin, Mao Feng, Wei Li, Jinbo Yao, Jiarong Niu
Summary: In order to enhance the flame retardancy and solid content of waterborne polyurethane (WPU), AOT and AOD series of WPU were synthesized and characterized. Carboxylic acid/nonionic composite units were used as hydrophilic groups, and OP550/THPO and OP550/DOPO-HQ combinations were used as flame retardant modifiers, respectively. The modified WPU emulsions displayed excellent dispersion, stability, and fluidity, with a UL-94 rating of V-0. The AOD series samples showed better flame retardancy than the AOT series, particularly AO(10)D(3)-WPU containing 3% DOPO-HQ, which achieved a limiting oxygen index value of 30.5%. Additionally, the flame retardants promoted carbon formation in the condensed phase.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Materials Science, Composites
Shengtao Dai, Longxuan Gao, Fei Yan, Jiaming Guo, Yanan Zhao, Yu Liu, Liu Liu, Yuhui Ao
Summary: A high solid content bio-based waterborne polyurethane (WPU) sizing agent was developed by combining anionic and nonionic monomers. The WPU exhibited excellent stability and contained 57% solids. The sizing agent significantly improved the interfacial properties of carbon fiber reinforced nylon 6 (CF/PA6) composites, with a considerable increase in flexural strength and interlaminar shear strength.
COMPOSITES COMMUNICATIONS
(2023)
Article
Polymer Science
Minghao Mu, Xinqiang Liu, Haisong Bi, Zheng Wang, Chengduo Qian, Baojian Yao, Yifan Liu, Xiufen Liu, Xue Li
Summary: In this study, high solid content core-shell structured cationic waterborne polyurethane (WPU) dispersions were prepared by mixing different prepolymer formulations. The optimal combination of prepolymer A and prepolymer B resulted in a dispersion with the highest solid content, lowest viscosity, and narrowest particle size distribution. The mechanical properties and contact angle of the WPU films were influenced by the ratio of prepolymer A and B, while the thermal stability performance remained unchanged.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Polymer Science
Hong-Ming Zhang, Guang-Ping Han, Wan-Li Cheng, Shun-Jie Liu, Xian-Hong Wang
Summary: High solid content CO2-based cationic waterborne polyurethanes (CWPUs) prepared using CO2-polyols and MDEA exhibited excellent adhesive strength and aging resistance.
CHINESE JOURNAL OF POLYMER SCIENCE
(2022)
Article
Polymer Science
Xiaobin Li, Ending Zhang, Jun Shi, Xiaoyan Xiong, Jiaming Lin, Qiang Zhang, Xiaohua Cui, Liqin Tan, Kun Wu
Summary: A novel zwitterionic composite hydrogel with high mechanical strength, satisfactory ionic conductivity, and broad adhesion capabilities has been developed, showing synergistic enhancement of mechanical strength and ionic conductivity through the combination of waterborne polyurethanes (PU) and poly(sulfobetaine zwitterion-co-acrylamide) (SAm); The hydrogel-based strain/stress sensor exhibits high sensitivity, wide sensing range, great stability, and accuracy for human body movements detecting and voice recognition, promoting the development of wearable devices.
MACROMOLECULAR RAPID COMMUNICATIONS
(2021)
Article
Polymer Science
Wenqi Xian, Jie Yuan, Zhengbin Xie, Wei Ou, Xiaoxuan Liu, Baohua Liu
Summary: The synthesis conditions of CO2 copolymer-based waterborne polyurethanes were studied, along with the impact of dimethylol propionic acid content and synthesis process on the emulsion's physical properties. Results indicate that high solid content waterborne polyurethanes can be synthesized at low temperatures through chain expansion, but challenges arise in achieving low water absorption levels.
JOURNAL OF POLYMER RESEARCH
(2021)
Article
Polymer Science
M. E. Victoria Hormaiztegui, Diana Marin, Piedad Ganan, Pablo Marcelo Stefani, Veronica Mucci, Mirta Aranguren
Summary: This study evaluated the effects of cellulose nanocrystals (CNCs) and bacterial cellulose (BC) on castor oil-based waterborne polyurethane (WBPU) films. BC-reinforced composites showed slightly higher thermal stability and maintained structural integrity when immersed in water, attributed to BC's high thermal stability and interconnected reticular morphology.
Article
Chemistry, Multidisciplinary
Yong Joon Lee, Yunju La, Ok Sung Jeon, Hak Ji Lee, Min Kyoon Shin, Keun-Hyeok Yang, Young Joon You, Sang Yoon Park
Summary: Waterborne polyurethane-acrylate (WPUA) and rod-type boron nitride nanotubes (BNNTs) composite films were studied for their excellent water resistance, thermal conductivity, and corrosion resistance. The composite materials were synthesized by mixing aqueous solutions of BNNT and WPUA without any organic solvents, showing promising potential for wide industrial applications.
Article
Materials Science, Biomaterials
Lingling Lei, Haibo Wang, Qihan Jia, Yali Tian, Shuang Wang
Summary: The development prospects of ionohydrogels with excellent mechanical properties and high sensitivity are necessary due to the rapid development of multi-functional flexible wearable sensors. A novel waterborne polyurethane (WPU) micelle with reactive groups on the surface has been prepared as a crosslinker, and then reacted with polyacrylamide (PAM) to obtain a polyacrylamide-polyurethane/ionic liquid (PAM-WPU/IL) ionohydrogel. The ionohydrogel exhibited ultrastretchability, good mechanical resilience, and excellent self-adhesion strength, and could be used as a strain sensor for monitoring human movement with high strain sensitivity.
JOURNAL OF MATERIALS CHEMISTRY B
(2023)
Article
Polymer Science
Shen Diao, Yuqiang Zhang, Caide Zhao, Mingying Wang, Jiacheng Yu
Summary: In this study, waterborne polyurethane (WPU) with high solid content (50-60%wt) was synthesized using mixed polyester diol with different crystalline degrees. The stability and particle size of the emulsion were analyzed, and the mechanical properties, thermal properties, and water absorption of the emulsion film were investigated. The degree of crystallization of the soft segment had a significant influence on the performance of the emulsion and film, and the optimal ratio of the soft segment was obtained by controlling the crystallinity. Furthermore, the introduction of a silicone chain segment improved the thermal stability and water resistance of the WPU, with the optimal amount of silicone oil confirmed at 4%wt.
Article
Construction & Building Technology
Peijun Xu, Yadong Wang, Pengjie Cheng, Peiliang Cong, Danggang Li, Zeyu Zhang, Jizhuang Hui, Min Ye
Summary: Waterborne epoxy emulsified asphalt (w-EA) is prone to cracking at low temperatures after curing, making it vulnerable to damage in plateau zone. In order to improve its performance, waterborne polyurethane (w-PU) is used as a toughening agent to modify w-EA. The addition of w-PU improves the microstructure, creep resistance, dynamic mechanical properties, low-temperature performance, and tensile mechanical properties of w-EA. The mixture with 10 wt% w-PU has significantly enhanced low-temperature crack resistance of w-EA.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Naijie Wang, Di Qin, Qiu Sun, Xiangqun Chen, Ying Song, Tiezhu Xin
Summary: In this study, a polyurethane-ester single-ion polymer electrolyte membrane was prepared by regulating the chain length of polyethylene oxide (PEG). The electrolytes demonstrated different micro-phase morphologies, local hydrogen bonding states, ionic association states, and electrochemical properties. The membranes showed excellent electrochemical, thermal, and mechanical properties with outstanding interfacial compatibility and stability with lithium metal anodes. The developed polyurethane-ester single-ion polymer electrolyte meets the application requirements of next-generation lithium batteries.
ACS APPLIED POLYMER MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Naijie Wang, Di Qin, Qiu Sun, Xiangqun Chen, Ying Song, Tiezhu Xin
Summary: A polyurethane-ester single-ion polymer electrolyte membrane is prepared by regulating the chain length of polyethylene oxide (PEG), which exhibits different micro-phase morphologies, local hydrogen bonding states, ionic association states, and electrochemical properties. The hard domains of polyurethane electrolytes ensure high carrier concentration and mechanical stability, resulting in good electrochemical, thermal, and mechanical properties. The developed polyurethane-ester single-ion polymer electrolyte shows outstanding interfacial compatibility and stability with lithium metal anodes, enabling excellent capacity and cycling stability for Li/LFP cells at 0.1 C.
ACS APPLIED POLYMER MATERIALS
(2023)
Article
Chemistry, Applied
Jing Zhang, Yi-min Wu, Hong-li Zhang, Ting-hui Yan, Yu-zhong Huang, Jia-xing Jiang, Ji-Jun Tang
Summary: In this study, a novel castor oil-glycerol-based waterborne polyurethane was successfully synthesized, with the addition of glycerol achieving higher bio-content and significantly enhancing the mechanical properties and thermal stability of the material.
PROGRESS IN ORGANIC COATINGS
(2021)
Article
Electrochemistry
Haichao Zhao, Wenru Zheng, Wenjing Liu, Xin Zhang, Yue Su
Summary: The LDH with caffeate anions intercalation in waterborne polyurethane coatings effectively enhances the anti-corrosion performance, improving the impedance of PU and providing better micro-area corrosive conditions. The synergistic effect of LDH and caffeate anions contributes to delaying corrosion reactions and enhancing barrier performances of PU.
INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE
(2021)
Article
Chemistry, Physical
Panpan Zhang, Xu Wang, Yangyang Yang, Haifeng Yang, Chunsheng Lu, Mingru Su, Yu Zhou, Aichun Dou, Xiaowei Li, Xiaochuan Hou, Yunjian Liu
Summary: In this study, the influence of transition metal doping on the electronic and mechanical properties and electrochemical performance of 2HMoS2/NC was investigated using Cobalt (Co) as an example. Co doping was found to effectively improve the electronic conductivity and active site areas of 2H-MoS2/NC at different positions, optimizing the adsorption and diffusion capability of potassium ions. Furthermore, the study revealed the optimal roles of different types of nitrogen atoms in kinetic adsorption, diffusion, and interfacial stability of potassium ions. These findings provide guidance for the experimental design of high rate 2H-MoS2/NC electrode materials and the optimal design of other functional composite materials.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2024)
Article
Chemistry, Physical
Zeeshan Ajmal, Mahmood Ul Haq, Shahid Zaman, M. K. Al-Muhanna, Anuj Kumar, Mohammed M. Fadhali, Siwar Ben Hadj Hassine, Muhammas Qasim, K. F. Alshammari, Ghulam Abbas Ashraf, Abdul Qadeer, Adil Murtaza, Sulaiman Al-Sulaimi, Huaqiang Zeng
Summary: This study presents a novel heterojunction structure (SrTiO3/CN-TAL10.0) for enhanced photocatalytic water splitting (PWS). The incorporation of thiophenedicarboxaldehyde (TAL) through copolymerization significantly improves the photocatalytic activity of carbon nitride (CN) while maintaining its photostability performance. The optimized composition allows efficient isolation of photoinduced charge carriers and enhanced charge transport, resulting in a remarkable increase in overall photocatalytic efficiency.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2024)
Article
Chemistry, Physical
Angela Arnosa-Prieto, Patricia Diaz-Rodriguez, Manuel A. Gonzalez-Gomez, Pelayo Garcia-Acevedo, Lisandra de Castro-Alves, Yolanda Pineiro, Jose Rivas
Summary: Macrophages can exhibit different phenotypes depending on the microenvironment and the characteristics of magnetic iron oxide nanoparticles (MNPs). This study demonstrates that the concentration and morphology of MNPs can influence the polarization of macrophages. The findings have implications for therapeutics targeting tissue regeneration and tumor progression.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2024)
Article
Chemistry, Physical
Yu Fang, Cheng-Ye Zhu, Hao-Cheng Yang, Chao Zhang, Zhi-Kang Xu
Summary: This study demonstrates the advantages of vacuum-assisted interfacial polymerization (VAIP) in fabricating polyimide nanofiltration membranes. By using vacuum filtration, aqueous solutions of PIP can be evenly distributed on different microfiltration substrates, leading to the fabrication of uniform and ultra-thin polyamide layers with excellent performance. The membranes exhibit high rejection rates and water permeance, as well as satisfactory long-term stability.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2024)
Article
Chemistry, Physical
Isaac J. Gresham, Edwin C. Johnson, Hayden Robertson, Joshua D. Willott, Grant B. Webber, Erica J. Wanless, Andrew R. J. Nelson, Stuart W. Prescott
Summary: Understanding the interactions between polymers and surfactants is crucial for optimizing commercial systems. This study tested the behavior of polymer-surfactant systems, revealing that they do not behave like polyelectrolytes in the presence of salt. Additionally, the structure of polymer-surfactant complexes under confinement differs from that of polyelectrolytes.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2024)
Article
Chemistry, Physical
Yunxiao Xie, Cui Liu, Jie Zhang, Yan Li, Bin Li, Shilin Liu
Summary: This study aimed to improve the microstructure and rheological properties of W/W Pickering emulsions by crosslinking sodium alginate at the water-water interface, thereby enhancing the activity of encapsulated probiotics in simulated gastrointestinal digestion.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2024)
Article
Chemistry, Physical
Sang Ho Lee, Yige Sun, Patrick S. Grant
Summary: This research developed an effective approach to enhance the charging rates of lithium ion batteries (LIBs) by strategically incorporating carbon nanotube (CNT) conductivity boosters into Li4Ti5O12 (LTO) electrodes. Multi-layer architectures comprising CNT-rich and CNT-free LTO electrode layers were manufactured using a layer-by-layer spray coating method to promote charge transfer kinetics of high mass loading electrodes. The best performing multi-layer was paired with a spray-coated LiFePO4 (LFP) positive electrode, resulting in attractive power performance that outperformed conventional LTO || LFP combinations.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2024)
Article
Chemistry, Physical
Jingwei Liang, Shaobin Li, Fengbo Li, Li Zhang, Yufeng Jiang, Huiyuan Ma, Kun Cheng, Liang Qing
Summary: A molybdenum-regulated self-supporting electrode material with rich vacancy defects has been successfully synthesized and shows exceptional catalytic activities and stability for electrocatalytic overall water splitting. This study provides a new perspective for the design and synthesis of non-precious metal bifunctional electrocatalysts.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2024)
Article
Chemistry, Physical
Jonas Blahnik, Jennifer Schuster, Rainer Mueller, Eva Mueller, Werner Kunz
Summary: This study investigates the relationship between the morphology of PMMA monopolymers and PMMA-PHEMA copolymers with the expected nature of surfactant-free microemulsions (SFMEs) before polymerization. It is found that previously mesostructured, surfactant-free mixtures can produce porous polymers of different morphologies, while unstructured, oil-rich regions lead to solid, transparent polymers without nanostructured morphologies. Additionally, a surfactant-based reference system shows similar phase behavior and polymer morphologies as the comparable surfactant-free system, indicating the importance of the hydrotropic behavior of HEMA in this system.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2024)
Article
Chemistry, Physical
Zheng-Fen Pu, Wen-Zhi She, Rong Sheng Li, Qiu-Lin Wen, Bi-Chao Wu, Chun-Hua Li, Jian Ling, Qiue Cao
Summary: This study synthesized two framework-isomeric covalent organic frameworks (COFs) and discovered that the light scattering signal of COFs can be used for the analytical detection of lead ions. By controlling synthesis conditions and introducing regulators, the morphology of COFs could be controlled and framework-isomeric COFs could be precisely synthesized.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2024)
Article
Chemistry, Physical
Yuchen Weng, Ying Hong, Jingyu Deng, Sicheng Cao, Li-Juan Fan
Summary: This paper reports the preparation of dynamic color-changing fluorescent polymer nanoparticles (PNPs) by constructing a fluorescence resonance energy transfer (FRET) pair. The PNPs show excellent anti-counterfeiting effects and reproducibility. The study demonstrates a promising encryption strategy that can achieve multiple outputs with simple operation.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2024)
Article
Chemistry, Physical
Guodong Liu, Zijian Wang, Jianing Wang, Hanbin Liu, Zhijian Li
Summary: This study investigates the combination of multicolor switchable polyaniline (PANI) electrode and 1-methyl-4,4'-bipyridyl iodide (MBI), which demonstrates superior optical properties in visible and near-infrared light modulation, as well as excellent electrochemical performances. This combination can be used to develop novel electrochromic devices for applications in smart packaging, smart labels, and flexible smart windows.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2024)
Article
Chemistry, Physical
Huying Yan, Yang Guo, Xingzhi Bai, Jiawei Qi, Haipeng Lu
Summary: By modifying Ti3C2Tx through heterogeneous interface engineering, optimized impedance matching is achieved, leading to enhanced electromagnetic wave absorption performance.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2024)
Article
Chemistry, Physical
Kehu Zhang, Yang Zhou, Silvia Moreno, Simona Schwarz, Susanne Boye, Brigitte Voit, Dietmar Appelhans
Summary: This article presents an advanced crosslinking strategy to fabricate clustered polymersomes using host-guest interactions. By controlling the input of crosslinker and environmental conditions, reversible aggregation and disassembly of these polymersomes can be achieved. The size and structure of these clustered polymersomes can be regulated and visualized through a fluorescent enzymatic cascade reaction.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2024)
Article
Chemistry, Physical
Junjie Xu, Weixiong Huang, Ruiling Li, Li Li, Jinjin Ma, Jiaou Qi, Haiyan Ma, Min Ruan, Lilin Lu
Summary: In this study, a potassium doped palladium catalyst was developed for acetylene hydrogenation, showing excellent catalytic performance and durability. The doping of potassium effectively weakened the adsorption of ethylene, improved ethylene selectivity, and lowered the barriers of hydrogen activation and transfer reactions.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2024)