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Properties of (meth) acrylate copolymer grafted with long fluorinated side chain prepared by 'graft onto' strategy

机译:用“移植到”策略制备的长氟化侧链(甲基)丙烯酸酯共聚物的性质

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A (meth) acrylate copolymer grafted with long fluorinated side chains (AGLF) was synthesized successfully through a two-step procedure. First, a carboxyl terminated fluoropolymer, poly(2,2,3,4,4,4-hexafluorobutyl methacrylate) was synthesized by conventional radical polymerization in the presence of 3-mercaptopropionic acid as chain transfer agent. And then the fluoropolymer was grafted to the in-house synthesized polyacrylate (MMA-r-BA-r-GMA). Fourier transform infrared spectroscopy and 1 H-nuclear magnetic resonance spectroscopy were employed to verify the synthesis of AGLF. Moreover, the surface properties were investigated by contact angle measurement and X-ray photoelectron spectroscopy. The results proved that a small amount of poly(2,2,3,4,4,4-hexafluorobutyl methacrylate) addition can create a hydrophobic surface effectively. Furthermore, the X-ray photoelectron spectroscopy results showed that it is the AGLF grafted with longer fluorinated side chain that have more fluorine atoms enriched on the surface and thus performed better hydrophobicity and lipophobicity. Testified by thermogravimetric analysis and differential scanning calorimetry, it was found that AGLF films have excellent thermal properties. (C) 2017 Wiley Periodicals, Inc.
机译:通过两步方法成功地合成了用长氟化侧链(AgLF)接枝的(甲基)丙烯酸酯共聚物。首先,通过在3-巯基丙酸作为链转移剂存在下通过常规自由基聚合来合成羧基封端的含氟聚合物,聚(2,2,3,4,4,4,4,4,4,4,4,4,4,4,4,4-六氟丁基丙烯酸丁酯)。然后将含氟聚合物移植到内部合成的聚丙烯酸乙酯(MMA-R-BA-R-GMA)中。使用傅里叶变换红外光谱和1 H核磁共振光谱法以验证AgLF的合成。此外,通过接触角度测量和X射线光电子谱研究了表面性质。结果证明,少量的聚(2,2,3,4,4,4,4-六氟丁酯)加成可以有效地产生疏水表面。此外,X射线光电子能谱结果表明,具有较长氟化侧链的AgLF,其具有富含表面的氟原子,因此进行更好的疏水性和脂肪性。通过热重分析和差示扫描量热法证明,发现AGLF膜具有优异的热性能。 (c)2017 Wiley期刊,Inc。

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