Rational Design of POSS Fillers for Simultaneous Improvements of Thermomechanical Properties and Lowering Refractive Indices of Polymer Films
Rational Design of POSS Fillers for Simultaneous Improvements of Thermomechanical Properties and Lowering Refractive Indices of Polymer Films
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合理设计 POSS 填料，同时提高聚合物薄膜的热机械性能和降低折射率
DOI：
10.1002/pola.26757
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发表时间：
2013
期刊：
影响因子：
--
通讯作者：
Y.
中科院分区：
文献类型：
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作者：
Jeon;J.-H.; Tanaka;K.; Chujo;Y.
我们在这里描述了多面体低聚倍半硅氧烷（POSS）基双功能分子填料的设计和合成，用于同时降低常规聚合物的折射率和改善热机械性能。我们制备的复合膜与聚（甲基丙烯酸甲酯）和聚苯乙烯含有一系列的POSS衍生物与单个功能单元的相互作用与聚合物链和七环戊基取代基周围的POSS核心创造专属体积。从聚合物复合材料的折射率的测量，它揭示了所有POSS填料可以降低薄膜的折射率。POSS填料的加入提高了复合材料的热稳定性和力学性能。填料对热性能的影响可以通过POSS的结构特征来解释：二氧化硅立方体的高度对称结构应该抑制热运动，从而大大增强聚合物基体的热机械性能。© 2013威利期刊公司. J. Polym.科学，部分A：聚合物。化学2013，51，3583-3589
We describe here the design and synthesis of the polyhedral oligomeric silsesquioxane (POSS)‐based dual‐functional molecular fillers for simultaneously lowering refractive indices and improving thermomechanical properties of conventional polymers. We prepared the composite films with poly(methyl methacrylate) and polystyrene containing the series of the POSS derivatives with the single functional unit for interacting with polymer chains and heptacyclopentyl substituents for creating exclusive volumes around the POSS core. From the measurements of refractive indices of polymer composites, it was revealed that all POSS fillers can lower the refractive index of the films. In addition, thermal stabilities and mechanical properties were enhanced by adding POSS fillers. The filler effect on the thermal properties can be explained by the structural features of POSS: The highly symmetrical structure of the silica cube should suppress thermal motions, resulting in the large enhancement of thermomechanical properties of polymer matrices. © 2013 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2013, 51, 3583–3589