摘要
以微乳液聚合法和溶液聚合法制备丙烯酸全氟烷基乙基酯和甲基丙烯酸甲酯的共聚物,以1,1,2-三氟三氯乙烷为溶剂,采用溶剂挥发成膜法直接制备出超疏水膜,并研究120℃热处理对超疏水膜表面性能的影响.对于用乳液聚合方法制备的超疏水膜,随着热处理时间的延长,滚动角表现出先逐渐增大直至完全不能滚动,然后重新回复到极小滚动角的特殊变化过程,而静态接触角只是略微减小,完全不同于热处理对平滑的含氟聚合物表面接触角的影响.扫描电镜结果显示,聚合物膜表面形貌对应出现从微/纳复合粗糙结构到微孔粗化并重新形成微/纳复合多层粗糙结构的变化.
The superhydrophobic films of perfluoroalkyl ethyl acrylate （FAEA） and methyl methacrylate （MMA） copolymers were prepared with one-step casting technique with 1,1,2-trifluoro-trichloro-ethane （F113） as solvent. It was found the contact angle （CA） decreased while sliding angle （SA） changed a lot as the heat treatment continued. Although these original films had large CA and small SA, while annealed for 3 h to 6 h, the films showed large SA hysteresis. However, if continued annealing for a longer time to 32 h, the SA reversed to very small again. The unique changes of hydrophobic properties of these films were due to the changes in surface roughness, which was shown by SEM.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
2009年第4期821-824,共4页
Chemical Journal of Chinese Universities
关键词
超疏水表面
含氟丙烯酸酯共聚酯
滚动角
热处理
Super-hydrophobic surface
Perfluoroalkylethyl acrylate
Sliding angle
Heat treatment
