Tadpole-like Copolymer for Fabrication of Silica-encapsulated Polysulfide Microspheres,ChemistrySelect

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Tadpole-like Copolymer for Fabrication of Silica-encapsulated Polysulfide Microspheres
ChemistrySelect ( IF 1.9 ) Pub Date : 2021-09-15 , DOI: 10.1002/slct.202102350
Shuxi Gao ₁ , Hao Pang ₁ , Yifang Zhao ₁ , Yongqiang Dai ₁ , PeiPing Hong ₁ , Bing Liao ₁

Affiliation

A novel giant surfactant, possessing a well-defined hydrophilic tail and a hydrophobic head with rigid multiple conjugate chains, tadpole-like copolymer with polyhedral oligomeric silsesquioxane core (P9-1), had been designed and synthesized via aminolysis/addition, interfacial oxidation polymerization. It was used to form complex micelles with polysulfides (PSL) for constructing the silica microspheres with micrometer dimensions in a simplified one-pot synthesis. The characterization results for the morphologies of the complex micelles and the resulting microspheres indicated that the introduction of conjugated segments and steric hindrance of hybrid cage contributes to promote the stability and provide larger core space of the self-assembled micelle to accommodate more PSL. With increasing the PSL/P9-1 feed ratio, the size of microspheres and the content of PSL in the resulting microsphere were increased due to the PSL droplets providing a soft-template for silica particles to build larger-sized silica microspheres with PSL cores. And the growth mechanism of microstructures was also proposed in evaporation synthetic procedures, especially for special hollow morphology.

中文翻译：

类蝌蚪共聚物用于制备二氧化硅包封的多硫化物微球

通过氨解/加成、界面氧化聚合，设计并合成了一种新型巨型表面活性剂，具有明确的亲水尾部和疏水头部，具有刚性多共轭链，具有多面体低聚倍半硅氧烷核（P9-1）的蝌蚪状共聚物. 它用于与多硫化物 (PSL) 形成复合胶束，以在简化的一锅法合成中构建微米尺寸的二氧化硅微球。复合胶束和所得微球的形态表征结果表明，共轭链段的引入和杂化笼的空间位阻有助于提高自组装胶束的稳定性并提供更大的核空间以容纳更多的 PSL。随着 PSL/P9-1 进料比的增加，由于 PSL 液滴为二氧化硅颗粒提供了软模板，以构建具有 PSL 核的更大尺寸的二氧化硅微球，因此微球的尺寸和所得微球中 PSL 的含量增加。并且在蒸发合成过程中也提出了微结构的生长机制，特别是对于特殊的空心形貌。

更新日期：2021-09-15

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