具有耐久超疏水性的可降解聚乳酸膜的制备和自清洁性能研究  

Preparation and self-cleaning properties of degradable polylactic acid porous films with durable superhydrophobicity

作　　者：齐浩彤 王子来 王文刚 钱裕洁 侯秀良[1] 徐荷澜 QI Hao-tong;WANG Zi-lai;WANG Wen-gang;QIAN Yu-jie;HOU Xiu-liang;XU He-lan(Key Laboratory of Ecological Textile,Ministry of Education,Jiangnan University,Wuxi 214122,China)

机构地区：[1]江南大学生态纺织教育部重点实验室,江苏无锡214122

出　　处：《应用化工》2023年第6期1706-1710,共5页Applied Chemical Industry

基　　金：中国博士后科学基金面上项目(2019M651699);中国纺织工业联合会应用基础研究项目(J202008)。

摘　　要：为了实现表面自清洁功能,材料通常需要进行疏水整理。但是,现有的疏水整理难以达到150°接触角的超疏水效果,且疏水效果很难持久,往往在使用或洗涤后迅速减弱。研究以可再生可生物降解的松香衍生物作为致孔剂,制备高表面粗糙度的聚乳酸微纳米多孔膜,随后使用十八烷基三氯硅烷进行纳米涂层,得到具有持久超疏水性和自清洁功能的聚乳酸疏水膜,水接触角最高为150.6°,具有自清洁功能。经过5个高强度的摩擦循环后,水接触角可以保持95%以上。In order to achieve self-cleaning function of a surface,hydrophobic finish is usually required.However,most hydrophobic finishing could not lead to superhydrophobic effect with a contact angle of 150°.In addition,the hydrophobic effect is difficult to last,and tends to weaken rapidly after use and washing.Polylactic acid(PLA)film with durable hydrophobicity and self-cleaning function was obtained.First,micro-and nano-porous PLA membrane with high surface roughness was prepared using a renewable and biodegradable rosin derivative as porogens,followed by nanocoating with octadecyltrichlorosilane.The water contact angle of the PLA film could be up to 150.6°,which endowed the film self-cleaning function.After 5 cycles of high-intensity rubbing,the water contact angle higher than 95%.

关 键 词：聚乳酸膜 耐久超疏水性 聚合松香 耐久自清洁性 

分 类 号：TQ317[化学工程—高聚物工业] TQ325