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首页> 外文期刊>Journal of Applied Polymer Science >Preparation and Characterization of Poly(chlorotrifluoroethylene-co-ethylvinyl ether)/ Poly(styrene acrylate) Core-Shells and SiO_2 Nanocomposite Films via a Solution Mixing Method
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Preparation and Characterization of Poly(chlorotrifluoroethylene-co-ethylvinyl ether)/ Poly(styrene acrylate) Core-Shells and SiO_2 Nanocomposite Films via a Solution Mixing Method

机译：溶液混合法制备聚氯三氟乙烯-乙基乙烯醚/聚苯乙烯丙烯酸酯核壳和SiO_2纳米复合薄膜及其表征

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摘要

Nanocomposite particles of poly(chlorotri-fluoroethylene-co-ethylvinyl ether) [poly(CTFE-co-EVE)]/ poly(styrene acrylate) (PSA)/SiO_2 were prepared with pol-y(CTFE-co-EVE)/PSA [CS(FS); core-shell (CS) fluoro surfactant (FS)] and hydrophilic SiO_2 nanoparticles by a solution mixing method. This method yielded a homogeneous dispersion of hydrophilic SiO_2 nanoparticles in the CS(FS) matrix. The nanocomposite particle composition was confirmed by Fourier transform infrared spectroscopy and ther-mogravimetric analysis. A slight improvement in the thermal stability was observed and the glass-transition temperature of the nanocomposite particles increased compared with the CS(FS) matrix. A remarkable enhancement was observed in the mechanical properties with an increase in the tensile strength from 1.1 to 6.2 MPa and with an increase in the elongation at break from 209.6 to 350.1% for the films with 15 wt % SiO_2. The presence of a wettable PSA shell on the fluorocore made interaction possible with SiO_2; this made it more hygroscopic with a decent water uptake capacity and an enhanced water contact angle.
机译：用pol-y（CTFE-co-EVE）/ PSA制备了聚（三氟氯乙烯-乙基乙烯醚）[聚（CTFE-co-EVE）] /聚（丙烯酸苯乙烯酯）（PSA）/ SiO_2的纳米复合颗粒[CS（FS）;溶液混合法制备了核-壳（CS）含氟表面活性剂（FS）]和亲水性SiO_2纳米颗粒。该方法在CS（FS）基质中获得了亲水性SiO_2纳米颗粒的均匀分散体。通过傅立叶变换红外光谱和热重分析确认了纳米复合颗粒的组成。观察到热稳定性略有改善，并且与CS（FS）基质相比，纳米复合颗粒的玻璃化转变温度有所提高。对于具有15wt％SiO 2的膜，观察到机械性能的显着增强，其中拉伸强度从1.1MPa增加到6.2MPa，断裂伸长率从209.6％增加到350.1％。氟核上可湿性PSA壳的存在使得与SiO_2相互作用成为可能;这使其具有更好的吸湿性，并具有良好的吸水能力和更大的水接触角。

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