聚乳酸/二氧化硅超疏水材料的制备及其性能研究  

Preparation and Properties Research of PLLA/SiO2 Super-hydrophobic Materials

作　　者：陈涛 杨胜都 李亮亮 田瑶珠[1] CHEN Tao;YANG Sheng-du;LI Liang-liang;TIAN Yao-zhu(Department of Polymer Materials and Engineering,College of Materials and Metallurgy,Guizhou University,Guiyang 550025,China)

机构地区：[1]贵州大学材料与冶金学院,贵阳550025

出　　处：《高分子通报》2020年第7期53-59,共7页Polymer Bulletin

基　　金：贵州省科技计划项目(黔科合支撑[2018]2184)。

摘　　要：本研究采用硅烷偶联剂KH570化学接枝与硬脂酸(SA)物理包覆相结合的方法对纳米二氧化硅(SiO2)进行有效改性,得到具有一定疏水效果并能在聚合物基体中有效分散的纳米填料,以聚乳酸(PLLA)为聚合物基体,通过非溶剂诱导相分离法制得了超疏水PLLA/SiO2复合膜,其表观接触角由纯PLLA的120°提高到153°。研究还发现,填料含量不同,基体的结晶性能也不同,随着改性纳米SiO2填料含量的增加,膜的结晶度从9.8%提高到17.19%,结晶度对材料表面粗糙结构的构建有重要作用,粗糙结构有助于表面疏水性能的提升。Based on the KH570 chemical grafting and SA physical coating method of combining the modified nano silica(SiO2)effectively,get a hydrophobic effect and can effectively dispersed nano filler in the polymer matrix,polylactic acid(PLLA)as polymer matrix,passed the non-solvent induced phase separation method preparation of super-hydrophobic PLLA/SiO2 composite films,the apparent contact Angle from pure PLLA 120°to 153°.The study also found that the crystallization properties of the matrix were different with the different filler contents.With the increase of the modified nano-SiO2 filler contents,the crystallinity of the film increased from 9.8%to 17.19%.The crystallinity plays an important role in the construction of rough structure on the surface of materials.

关 键 词：非溶剂诱导相分离 左旋聚乳酸 硬脂酸 硅烷偶联剂 超疏水 

分 类 号：TB34[一般工业技术—材料科学与工程]