Preparation of Polystyrene Nanospheres in Confined Space

doi:10.6023/A1112021

Acta Chimica Sinica ›› 2012, Vol. 70 ›› Issue (9): 1047-1054.DOI: 10.6023/A1112021 Next Articles

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受限空间内聚苯乙烯微粒的制备

王晓蜂, 袁荞龙

华东理工大学材料科学与工程学院上海市先进聚合物材料重点实验室上海 200237

投稿日期:2011-12-02 修回日期:2012-02-21 发布日期:2012-05-18
通讯作者: 袁荞龙 E-mail:qlyuan@ecust.edu.cn
基金资助:
上海市重点学科(No. B502)和上海市重点实验室(No. 08DZ2230500)资助项目.

Preparation of Polystyrene Nanospheres in Confined Space

Wang Xiaofeng, Yuan Qiaolong

Key laboratory of Shanghai Advanced Polymeric Materials, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237

Received:2011-12-02 Revised:2012-02-21 Published:2012-05-18
Supported by:
Project supported by Shanghai Leading Academic Discipline Project (No. B502) and Shanghai Key Laboratory Project (No. 08DZ2230500).

The poly(ethylene glycol)-b-poly(propylene glycol)-b-poly(ethylene glycol) terminated with pentacyano(4-(dimethylamino)-pyridine) ferrate (EPE-Fe) complex surfactant was synthesized and was used to be self-assembled with styrene (St) in water to form a nano-reactor (EPE-Fe-St). The free radical polymerization of styrene occurred in the confined space in nanosize. And the polystyrene nanospheres (EPE-Fe-PS) were prepared in the nano-reactor. Furthermore, ferric ion was used to cure the shell of the EPE-Fe-St to form a hardened nano-reactor (Fe-EPE-Fe-St). The styrene polymerization was also arisen in the nano-reactor to form polystyrene nanospheres (Fe-EPE-Fe-PS) with a hardened shell. The results of molecular weight and morphology of polystyrene nanospheres show that the various size of monodispersed polystyrene nanospheres in 60～200 nm have been obtained in the confined nanospace. The effect of polymerization temperature on the size of self-assembled EPE-Fe-St is remarkable, and on the size of the Fe-EPE-Fe-St is slight. The higher molecular weight of the polystyrene has achieved more than 700000 in the confined space. In the self-assembled nano-reactor, the molecular weight of PS decreases with increase of initiator content in St solution and enhancement of polymerization temperature, and increases with augment of EPE-Fe content in water. The glass transition temperature (T_g) of the polystyrene nanospheres prepared in two kinds of the confined space are in the range of 90～135 ℃. The T_g of polystyrene nanosphere is enhanced obviously after hardening the shell of nano-reactor whether the hardening shell arises before or after the polymerization.

Key words: self-assembly, nano-reactor, confined space, polystyrene nanosphere, morphology

Cite this article

Wang Xiaofeng, Yuan Qiaolong. Preparation of Polystyrene Nanospheres in Confined Space[J]. Acta Chimica Sinica, 2012, 70(9): 1047-1054.

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受限空间内聚苯乙烯微粒的制备

Preparation of Polystyrene Nanospheres in Confined Space

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