文章摘要
疏水性增透聚酯薄膜的制备及应用
Preparation and Application of Hydrophobic Transparent Polyester Film
  
DOI:10.16865/j.cnki.1000-7555.2019.0359
中文关键词: 聚酯薄膜  原子转移自由基聚合  苯乙烯-丙烯酸聚二甲基硅氧烷酯共聚物  透光率  疏水性
英文关键词: polyester film  atom transfer radical polymerization  styrene-polydimethyl siloxane copolymer  transmittance  hydrophobicity
基金项目:常州科技支撑计划(工业)(CE20170029);武进区科技局双“十万”项目;江苏省高等教育一流学术项目机构(TAPP);江苏省高校优先学术项目开发(PAPD);江苏晨光涂料有限公司;深圳基础研究项目(JCYJ20170818114324998)
作者单位
李佳煜1,曹 钰1,刘红波2,刘 俊1,姜 彦1,张洪文1 1. 常州大学 材料科学与工程学院江苏 常州 2131642. 深圳职业技术学院 化生学院广东 深圳 518055 
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中文摘要:
      以聚苯乙烯为大分子引发剂,丙烯酸聚硅氧烷酯为单体,通过原子转移自由基聚合制备苯乙烯-丙烯酸聚二甲基硅氧烷酯共聚物。将所得聚合物旋涂于聚对苯二甲酸乙二醇酯(PET)薄膜表面,研究共聚物中不同硅氧烷含量对聚酯薄膜性能的影响。通过核磁共振和红外光谱表征了丙烯酸聚硅氧烷酯单体及与苯乙烯共聚产物的结构,结果表明实验成功制备出了苯乙烯共聚物;凝胶渗透色谱结果表明聚合物的相对分子质量与设计相对分子质量相接近,并且相对分子质量分布系数均小于1.4,说明反应具有一定可控性;紫外-可见光分光光度计结果表明聚合物的折射率随着嵌段聚合物中硅氧烷含量的降低而增加;通过场发射扫描电镜(FE-SEM)对改性前后的聚酯薄膜进行观察,结果显示聚酯薄膜表面形成了蜂窝状多孔结构,从而有效改善了薄膜的透光性。总体研究结果表明,随着共聚物中硅氧烷含量的增加,聚酯薄膜的水接触角和透光率均呈先增后减的趋势。当共聚物中硅氧烷含量为19.6%时,PS-PDMS嵌段共聚物折射率为1.38,涂覆在PET表面后薄膜透光率达到92.6%,水接触角为120°。
英文摘要:
      Using polystyrene as macroinitiator and poly-siloxane acrylate ester as monomer, polystyrene-polydimethyl siloxane copolymers (PS-PDMS) were prepared by atom transfer radical polymerization. The obtained polymers were spin-coated on the surface of polyethylene terephthalate (PET) film to investigate the effect of different siloxane contents in the copolymers on properties of the polyester films. The structure of polysiloxane acrylate monomers and copolymers with styrene were characterized by 1H-NMR and FT-IR-ATR. The results show that the styrene copolymers were successfully prepared. The molecular weight of the polymers was characterized by GPC. The results show that the molecular weight of the polymers is close to the designed molecular weight, and the molecular weight distribution coefficient is less than 1.4, indicating that the reaction is controllable. The refractive index of the polymers characterized by UV-visible spectrophotometer shows that the refractive index of the polymers increases with the decrease of the content of siloxane in the block polymers. The FE-SEM results show that the porous honeycomb structure is formed on the surface of the polyester films, which effectively improves the light transmittance of the films. After coating with the copolymer, the hydrophobicity and optical performance of the polyester films are significantly improved compared with pure polyester film. When the content of siloxane is 19.6%, the refraction index of PS-PDMS copolymer decreases to 1.38, the light transmittance of the modified films increases from 88.0% to 92.6%, and the water contact angle reaches 120°.
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