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首页> 外文期刊>Journal of Applied Polymer Science >Synthesis of polycarbonate-co-poly(p-ethylphenol) and CdS nanocomposites
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Synthesis of polycarbonate-co-poly(p-ethylphenol) and CdS nanocomposites

机译：聚碳酸酯-共-聚（对乙基苯酚）和CdS纳米复合材料的合成

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The enzyme-catalyzed synthesis of poly(p-ethylphenol) (PEP) was modified by copolymerization with polycarbonates through triphosgene at low temperature to form polycarbonate-co-poly(p-ethylphenol) (PC-co-PEP). FTIR, NMR, GPC, and thermal analysis verified the formation of PC-co-PEP. The copolymers have an optical absorption in the UV range. CdS semiconductor nanocrystallites were synthesized in reversed micelles with subsequent in situ enzymatic copolymerization of p-ethylphenol and 4-hydroxythiophenol in the same medium. TEM and ATR-FTIR showed that the polymer precipitated in spherical morphologies, incorporating CdS nanocrystals into the polymer matrix, with surface hydroxyl groups. The polymer/CdS core was then dispersed into polycarbonate. The polymer/CdS nanocomposites showed higher optical absorbance in the UV-vis range when compared to the polymer matrix without CdS.
机译：通过在低温下通过三光气与聚碳酸酯共聚，对酶催化的聚对乙基苯酚（PEP）的合成进行改性，以形成聚碳酸酯-共聚对乙基苯酚（PC-co-PEP）。 FTIR，NMR，GPC和热分析验证了PC-co-PEP的形成。该共聚物在UV范围内具有光吸收。在相反的胶束中合成了CdS半导体纳米微晶，随后在同一介质中进行了对乙基苯酚和4-羟基硫代苯酚的原位酶共聚。 TEM和ATR-FTIR显示该聚合物以球形形态沉淀，将CdS纳米晶体结合到具有表面羟基的聚合物基质中。然后将聚合物/ CdS核分散到聚碳酸酯中。与没有CdS的聚合物基质相比，该聚合物/ CdS纳米复合材料在UV-vis范围内显示出更高的吸光度。

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