Article
Construction & Building Technology
Yuechao Zhao, Xing Gong, Quantao Liu
Summary: In this study, environment-friendly waterborne polyurethane (WPU) additives were prepared and applied to modify bitumen. The properties of the WPU additive were characterized, and the storage stability, workability, and rheological properties of the modified bitumen were investigated. The results showed that WPU additives improved the high-temperature deformation resistance and low-temperature cracking resistance of bitumen, but slightly weakened its fatigue resistance. The chemical structure of the virgin bitumen remained unchanged after the incorporation of WPU additives. Overall, the eco-friendly WPU modified bitumen has excellent application value and broad market prospects.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Chemistry, Physical
Yuting Zhao, Tonghui Hao, Wei Wu, Yuan Meng, Xianwu Cao, Qunchao Zhang, Wei She, Jun You, Dean Shi, Tao Jiang
Summary: This work demonstrates an eco-friendly and robust superhydrophobic coating based on siloxane-modified hyperbranched waterborne polyurethane (Si-HBPU) and fluorinated silica nanoparticles (F-SiO2). The coating shows excellent water repellency and mechanical robustness, and is capable of maintaining superhydrophobicity even after sandpaper abrasion. Additionally, it exhibits outstanding anti-icing/deicing performance and scratch resistance, anti-fouling, and anti-corrosion properties.
APPLIED SURFACE SCIENCE
(2022)
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
Biochemistry & Molecular Biology
Chengshuang Wang, Jie Zhang, Jiahao Chen, Jingwen Shi, Yanteng Zhao, Meng He, Liang Ding
Summary: This study develops environmentally friendly bio-based waterborne polyurethane (WPU) coatings by modifying them with chitosan-modified zinc oxide (CS-ZnO) nanoparticles. The results show that the addition of CS-ZnO improves the strength and thermal stability of the coatings, but reduces their optical transparency and wettability.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2022)
Review
Chemistry, Physical
Zilong Zhang, Fangmin Zuo, Tianzi Cai, Xingyu Gai, Li Wan, Haidan Lin, Bolin Wang, Haifeng Zhang
Summary: In the last decade, oil-based titanium dioxide nanofluids (TiO2 NFs) have gained significant attention for their unique insulating properties and excellent thermal performance, making them potential candidates for modified insulating oils in power transformers. This article provides a comprehensive review of the recent advances in the preparation, characterization, and properties of different oil-based TiO2 NFs. Various characterization techniques are employed to determine the crystal structure, particle size, surface function, surface charge, and stability of the nanofluids. The critical properties of oil-based TiO2 NFs under different influencing factors are highlighted, and the existing challenges and future perspectives are presented.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Review
Polymer Science
Xuan Yin, Haosheng Pang, Yunjun Luo, Bing Zhang
Summary: Green functional two-component flame-retardant waterborne polyurethane coatings (2K-FWPU) exhibit outstanding eco-friendly protection, low toxicity, and no pollution, with improved flame retardancy, satisfying various functionality requirements through different flame-retardants and compositions. The design of 2K-FWPU coatings will significantly assist and guide the potential development of water-based coatings for engineering applications.
Article
Green & Sustainable Science & Technology
Ling Xu, Zifeng Zhao, Xianrui Li, Jie Yuan, Qingyue Zhou, Feipeng Xiao
Summary: The research explored the feasibility of applying waterborne acrylate and waterborne polyurethane to improve cracking resistance for fog seal technology as a cleaner modification approach. Results showed the compatibility of these additives in fog seal materials and demonstrated how the interaction between asphalt emulsion and waterborne additive affected the cracking resistance. Additionally, the study found that polymer network formation through asphalt-additives interaction improved thermal cracking resistance of fog seal materials.
JOURNAL OF CLEANER PRODUCTION
(2021)
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
Polymer Science
Dayang Wang, Zhixiong Huang, Shaojun Shi, Jingyu Ren, Xiangbin Dong
Summary: In this study, environmentally friendly and low-cost castor oil was used as the soft segment of polyurethane, and KH550 modification improved the thermal stability and flexibility of CWPU. The modified CWPU film exhibited excellent hydrophobicity, chemical resistance, and temperature resistance.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Article
Pharmacology & Pharmacy
Athar Mahdieh, Hamid Yeganeh, Hamidreza Motasadizadeh, Effat Nekoueifard, Samane Maghsoudian, Mohammad Hossein Ghahremani, Bo Nystrom, Rassoul Dinarvand
Summary: This study presents a magnetic targeted drug delivery system based on waterborne polyurethane nanomicelles, which has the potential for targeted therapy and image-guided drug delivery.
INTERNATIONAL JOURNAL OF PHARMACEUTICS
(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
Materials Science, Multidisciplinary
Wenyu Cai, Wei Xin, Haonan Zhang, Yunjun Luo
Summary: In this study, a low-polarity waterborne polyurethane (WPU) was synthesized to alleviate harmful residual dye pollution in microfiber synthetic leather industry. It was found that increasing the content of hydroxyl-terminated polybutadiene (HTPB) can decrease the alkali reduction rate, but excessive content leads to phase separation and increases the alkali reduction rate. The addition of an appropriate amount of HTPB significantly improves the coloration rate of microfiber leather and meets most application requirements.
Article
Chemistry, Physical
Domenico Acierno, Lucia Graziosi, Antonella Patti
Summary: The aim of this research was to study the impact of different types of nanoparticles on the UV weathering resistance of polyurethane treatment in polyester-based fabrics. The results showed that the addition of nanoparticles significantly improved the puncturing strength of the fabric and reduced its deformability. However, after UV aging, the mechanical performance of both the neat fabric and PU-impregnated specimens decreased.
Article
Materials Science, Multidisciplinary
Hui Guo, Caijuan Zhang, Xinjie Zhou, Jia Chen, Lili Yu, Hui Li, Xiao Wang
Summary: To improve the outdoor exposure performance of laminated bamboo, boric acid/borax and UV absorbents were used to modify waterborne polyurethane coatings. The modified coatings showed enhanced wear resistance and increased wettability, with changes in molecular structure and improved thermal stability. The combination of boric acid/borax and UV absorbents had a control effect on Aspergillus Niger.
Article
Polymer Science
Bei Ye, Xiao-Ling Zeng, Ji-Peng Guan, Shao-Cong Guo, Yu-Yuan Yao, Xiao-Jun Shen
Summary: This study successfully prepared cotton fabric composites with ultra-high-efficiency electromagnetic shielding and UV resistance by decorating zinc oxide on silver nanowires. The composites showed superior electromagnetic interference shielding effectiveness and UV protection ability compared to other materials, while also increasing the tensile strength of cotton fabric.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Article
Polymer Science
Zhongming Yuan, Hiroko Yamamoto, Shinji Kanehashi, Takeshi Shimomura
Summary: This study reports the synthesis of a flexible light-emitting polymer film using a solution blending method. The selective positioning of MEH-PPV molecules in the PS phase of the film was confirmed. The film exhibited a nanometer-scale luminescent domain with low aggregation quenching and showed good elastomeric characteristics.
POLYMERS FOR ADVANCED TECHNOLOGIES
(2024)
