Key Laboratory of Advanced Textile Materials & Manufacturing Technology, Ministry of Education; Engineering Research Center for Eco-Dyeing & Finishing of Textiles, Ministry of Education; National Base for International Science and Technology Cooperation in Textiles and Consumer-Goods Chemistry, Zhejiang Sci-Tech University , 310018 Hangzhou, China.
Lehrstuhl für Funktionelle Materialien, Physik-Department, Technische Universität München , James-Franck-Strasse 1, D-85748 Garching, Germany.
ACS Appl Mater Interfaces. 2017 Apr 19;9(15):13647-13656. doi: 10.1021/acsami.7b01922. Epub 2017 Apr 7.
Comfort regulation and inhibition of bacterial adhesion to textiles is realized by cross-linking thermoresponsive random copolymer to the cotton fabrics. By introduction of ethylene glycol methacrylate (EGMA) monomers into n-isopropylacrylamide (NIPAM) with a molar ratio of 2:18, the obtained random copolymer poly(n-isopropylacrylamide-co-ethylene glycol methacrylate), abbreviated as P(NIPAM-co-EGMA), presents a transition temperature (TT) of 40 °C in an aqueous solution with a concentration of 1 mg/mL. Because of the additional EGMA in the copolymer, the obtained P(NIPAM-co-EGMA) shows a glass transition temperature (T) of 0 °C, which is much lower than that of pure PNIPAM (T = 140 °C). Therefore, the introduction of P(NIPAM-co-EGMA) into the cotton fabrics will have little influence on the softness of the fabrics. Due to the cross-linked P(NIPAM-co-EGMA) layer on the cotton fabrics, the porosity of the polymer layer can be adjusted by varying the external temperature below or above TT, showing that regulation of the air and moisture permeability as well as the body comfort are feasible in the cotton fabrics cross-linked with P(NIPAM-co-EGMA). In addition, the cross-linked P(NIPAM-co-EGMA) layer is capable of absorbing moisture in the ambient atmosphere to form a hydrated layer on top, which can inhibit bacterial adhesion to the textiles.
通过将温敏性无规共聚物交联到棉织物上来实现对细菌黏附的舒适性调节和抑制。通过将摩尔比为 2:18 的乙二醇甲基丙烯酸酯（EGMA）单体引入到 N-异丙基丙烯酰胺（NIPAM）中，得到的无规共聚物聚（N-异丙基丙烯酰胺-co-乙二醇甲基丙烯酸酯），缩写为 P（NIPAM-co-EGMA），在浓度为 1mg/mL 的水溶液中具有 40°C 的转变温度（TT）。由于共聚物中存在额外的 EGMA，所得的 P（NIPAM-co-EGMA）具有 0°C 的玻璃化转变温度（T），远低于纯 PNIPAM（T=140°C）。因此，将 P（NIPAM-co-EGMA）引入棉织物中对织物的柔软度几乎没有影响。由于棉织物上交联的 P（NIPAM-co-EGMA）层，通过在 TT 以下或以上改变外部温度，可以调节聚合物层的孔隙率，这表明在交联的 P（NIPAM-co-EGMA）棉织物中可以调节空气和水分透过性以及人体舒适度。此外，交联的 P（NIPAM-co-EGMA）层能够吸收周围大气中的水分，在其表面形成水合层，从而抑制细菌对纺织品的黏附。
