聚酯薄膜表面接枝含硅共聚物及其疏水性能  

Surface Hydrophobicity of Polyester Film Grafted with Silicon Copolymer

作　　者：张洪文[1] 张琳[1] 袁珣[1] 张敏艳[1] 周仕龙[1] 姜彦[1] 

机构地区：[1]常州大学材料科学与工程学院,江苏常州213164

出　　处：《高分子材料科学与工程》2013年第9期103-106,共4页Polymer Materials Science & Engineering

基　　金：国家青年科学基金资助项目(51203015);国家专项基金项目(51243003)

摘　　要：利用表面引发原子转移自由基聚合(SI-ATRP)在聚酯薄膜表面接枝由γ-甲基丙烯酰氧基丙基三甲氧基硅烷(KH-570)和甲基丙烯酸甲酯形成的共聚物,以提高基体材料的表面疏水性。研究不同反应条件下接枝含硅共聚物对聚酯薄膜表面组成、结构和性能的影响。通过衰减全反射-傅里叶变换红外光谱仪(ATR-FT-IR),X射线光电子能谱仪(XPS)以及扫描电子显微镜对接枝改性前后聚酯薄膜的表面组成、结构和形貌进行分析;利用接触角测试对比研究聚酯薄膜接枝改性前后的表面性能。结果表明,随反应时间延长,反应温度的提高,聚酯薄膜表面水接触角不断提高,最高达到95.8°,表面自由能下降,疏水性提高。The copolymer composed of γ-methacryloxypropyl trimethoxy silane （KH-570） and methyl methacrylate was grafted onto the surface of polyester films via surface initiated atom transfer radical polymerization （SI-ATRP） to improve the surface properties such as hydrophobicity. The influence of different composition of grafting copolymers, polymerization time and temperature on the surface composition, structure and morphology of polyester films were studied by ATR-FT-IR, X-ray photoelectron spectroscopy and scanning electron microscopy The data of contact angle test shows that the surface properties of polyester films are related to the composition of grating copolymers, reaction temperature and monomer content. As the reaction time prolongs and the reaction temperature rises, the contact angle of the films increases to 95.8^＊ and the hydrophobicity of polyester film is improved, the surface tension decreases.

关 键 词：聚酯薄膜 表面引发原子转移自由基聚合 接触角 Γ-甲基丙烯酰氧基丙基三甲氧基硅烷 含硅共聚物 

分 类 号：TQ323.4[化学工程—合成树脂塑料工业]