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Photo-responsive cellulose nanocrystal modified fluorinated polyacrylate based on coumarin chemistry
Journal of Applied Polymer Science ( IF 2.7 ) Pub Date : 2023-02-20 , DOI: 10.1002/app.53757
Jianhua Zhou 1, 2 , Xiuqing Liu 1, 2 , Xueli Wang 1, 2
Journal of Applied Polymer Science ( IF 2.7 ) Pub Date : 2023-02-20 , DOI: 10.1002/app.53757
Jianhua Zhou 1, 2 , Xiuqing Liu 1, 2 , Xueli Wang 1, 2
Affiliation
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Photo-responsive cellulose nanocrystal modified fluorinated polyacrylate was synthesized by environmentally friendly RAFT-mediated Pickering emulsion polymerization using amphiphilic block copolymer modified cellulose nanocrystal poly(acrylic acid)-g-CNC-g-poly (hexafluorobutyl acrylate-co-7-(2-methacryloyloxyethoxy)-4-methylcoumarin) PAA-g-CNC-g-P (HFBA-co-CMA) (MCNC) as a stabilizer, and the photo-responsive coumarin groups were introduced to endow it with self-healing function. This paper mainly studied the effect of MCNC dosage on emulsion polymerization and latex film properties. The latex particle size and its distribution decreased as the MCNC dosage increased from 0.4 wt% to 1.0 wt%, and then increased afterwards. The mechanical property and thermal stability of latex films could be significantly improved by introducing MCNC. And the surface scratches of latex films with MCNC exceeding 0.4 wt% could be completely repaired after 7 h UV irradiation. Furthermore, the photo-responsive cellulose nanocrystal modified fluorinated polyacrylate emulsion was applied to fabric finishing by dip-rolling treatment. And the finished fabric had good hydrophobicity, oleophobicity and surface repair performance.
中文翻译：
基于香豆素化学的光敏纤维素纳米晶改性氟化聚丙烯酸酯
使用两亲性嵌段共聚物改性纤维素纳米晶聚（丙烯酸）- g -CNC- g -poly（六氟丁基丙烯酸酯 - co -7-（2-），通过环境友好的 RAFT 介导的 Pickering 乳液聚合合成光响应性纤维素纳米晶改性氟化聚丙烯酸酯甲基丙烯酰氧基乙氧基)-4-甲基香豆素) PAA- g -CNC- g -P (HFBA- co-CMA)(MCNC)作为稳定剂，引入光敏香豆素基团赋予其自愈功能。本文主要研究了MCNC用量对乳液聚合和乳胶膜性能的影响。随着 MCNC 用量从 0.4 wt% 增加到 1.0 wt%，乳胶粒径及其分布逐渐减小，然后增加。引入MCNC可以显着提高乳胶膜的机械性能和热稳定性。MCNC 超过 0.4 wt% 的乳胶膜表面划痕经过 7 h 的紫外线照射后可以完全修复。此外，将光敏纤维素纳米晶改性的含氟聚丙烯酸酯乳液通过浸轧处理应用于织物整理。且成品织物具有良好的疏水性，
更新日期：2023-02-20
中文翻译：
基于香豆素化学的光敏纤维素纳米晶改性氟化聚丙烯酸酯
使用两亲性嵌段共聚物改性纤维素纳米晶聚（丙烯酸）- g -CNC- g -poly（六氟丁基丙烯酸酯 - co -7-（2-），通过环境友好的 RAFT 介导的 Pickering 乳液聚合合成光响应性纤维素纳米晶改性氟化聚丙烯酸酯甲基丙烯酰氧基乙氧基)-4-甲基香豆素) PAA- g -CNC- g -P (HFBA- co-CMA)(MCNC)作为稳定剂，引入光敏香豆素基团赋予其自愈功能。本文主要研究了MCNC用量对乳液聚合和乳胶膜性能的影响。随着 MCNC 用量从 0.4 wt% 增加到 1.0 wt%，乳胶粒径及其分布逐渐减小，然后增加。引入MCNC可以显着提高乳胶膜的机械性能和热稳定性。MCNC 超过 0.4 wt% 的乳胶膜表面划痕经过 7 h 的紫外线照射后可以完全修复。此外，将光敏纤维素纳米晶改性的含氟聚丙烯酸酯乳液通过浸轧处理应用于织物整理。且成品织物具有良好的疏水性，
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