首页> 外文期刊>Journal of Applied Polymer Science >Transparent, fluorescent, and mechanical enhanced elastomeric composites formed with poly (styrene-butadiene-styrene) and SiO_2-hybridized CdTe quantum dots
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Transparent, fluorescent, and mechanical enhanced elastomeric composites formed with poly (styrene-butadiene-styrene) and SiO_2-hybridized CdTe quantum dots

机译:由聚(苯乙烯-丁二烯-苯乙烯)和SiO_2杂化的CdTe量子点形成的透明,荧光和机械增强的弹性体复合材料

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摘要

Transparent poly(styrene-butadiene-styrene) (SBS)-quantum dots (QDs) composites (SBS/CdTe QDs) that simultaneously possess strong photoluminescence (PL) and enhanced mechanical properties are presented for the first time based on the facile blending of SiO_2-hybridized CdTe QDs with SBS. UV-vis spectrum and fluorescence measurement show that SBS/CdTe QDs composites exhibit good optical properties. The results of transmission electron microscopy show good dispersion of CdTe QDs in the SBS matrix. The results of dynamic mechanical thermal analysis indicate that the micro-phase separated structure of the SBS is exist in the composites, and the presence of CdTe QDs can lead to an decrease of glass transition temperatures of polybutadiene (PB) and polystyrene(PS) domains. In addition, mechanical tests reveal that the addition of CdTe QDs is a useful approach to improve the mechanical properties of SBS. Meanwhile, the fluorescent photographs taken under ultraviolet light prove that SBS/CdTe QDs composites possess strong PL.
机译:基于SiO_2的简便共混首次提出了同时具有强光致发光(PL)和增强的机械性能的透明聚(苯乙烯-丁二烯-苯乙烯)(SBS)-量子点(QDs)复合材料(SBS / CdTe QDs)。 SBS杂交的CdTe QD。紫外可见光谱和荧光测量表明,SBS / CdTe QDs复合材料表现出良好的光学性能。透射电子显微镜的结果表明,CdTe QD在SBS基质中具有良好的分散性。动态机械热分析结果表明,复合材料中存在SBS的微相分离结构,CdTe QD的存在可导致聚丁二烯(PB)和聚苯乙烯(PS)域的玻璃化转变温度降低。 。此外,机械测试表明,添加CdTe QD是改善SBS力学性能的有用方法。同时,在紫外光下拍摄的荧光照片证明SBS / CdTe QDs复合材料具有很强的PL。

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