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首页> 外文期刊>RSC Advances >Dual responsive macroemulsion stabilized by Y-shaped amphiphilic AB(2) miktoarm star copolymers
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Dual responsive macroemulsion stabilized by Y-shaped amphiphilic AB(2) miktoarm star copolymers

机译：y形amphiphilic ab（2）miktoarm星共聚物稳定的双敏致瘤乳液

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摘要

Dual responsive macroemulsions stabilized by Y-shaped amphiphilic AB(2) miktoarm star polymeric emulsifiers were presented in this study. First, a amphiphilic Y-shaped AB(2) miktoarm star polymer composed of poly(N,N-dimethylaminoethylmethacrylate) (PDMAEMA) and polystyrene (PS) arms was synthesized by sequential reversible addition-fragmentation chain transfer (RAFT) polymerization of styrene monomer and atom transfer radical polymerization (ATRP) of N, N-dimethylaminoethyl methacrylate (DMAEMA) monomer. The structure and the molecular weight as well as the molecular weight distribution were carefully characterized by H-1 NMR and GPC, respectively. The obtained PS-(PDMAEMA)(2) miktoarm star polymers were then applied as polymer emulsifiers for both o/w and w/o macroemulsions formation, and stabilized macroemulsions could be produced at a lower emulsifier content. Meanwhile, the emulsifying performance of PS-(PDMAEMA)(2) miktoarm star polymer and stimulus-response of the macroemulsion were also investigated. The PS-(PDMAEMA)(2) stabilized o/w macroemulsion showed pH-induced demulsification and temperature-induced phase inversion. However, the inversion of the PS-(PDMAEMA)(2) emulsifier at the oil-water interface could not be spontaneously accomplished. Furthermore, successful phase inversion was only smoothly realized for those emulsions with pH 7 water in the presence of a modulate stirring.
机译：通过稳定的双响应粗滴Y形的两亲性AB（2）杂臂星形聚合物乳化剂在本研究中作了介绍。 （N，N-甲基丙烯酸二甲氨基）（PDMAEMA）和聚苯乙烯聚组成首先，将两亲性Y形AB（2）杂臂星形聚合物（PS）臂通过苯乙烯单体的顺序可逆加成 - 断裂链转移（RAFT）聚合合成和原子转移自由基聚合的N（ATRP），N-二甲氨基乙酯（DMAEMA）单体。的结构和分子量以及分子量分布进行了仔细分别特征在于H-1 NMR和GPC，。然后将获得的PS-（PDMAEMA）（2）杂臂星形聚合物被用作聚合物乳化剂应用于两个O / W和W / O型粗滴的形成，并稳定粗滴可以在较低的乳化剂含量来制造。同时，PS-（PDMAEMA）（2）杂臂星形聚合物和宏乳液的刺激反应的乳化性能也进行了研究。的PS-（PDMAEMA）（2）稳定化的O / W粗乳液显示出pH诱导破乳和温度诱导相转化。然而，PS-（PDMAEMA）（2）乳化剂在油 - 水界面的反转不能自发地实现。此外，成功的相位反转只顺利实现用于在调制搅拌的存在下与pH为7的水的那些乳剂。

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  • 来源
    《RSC Advances》 |2015年第117期|共10页
  • 作者

    Li Heng; Yang Duanguang; Gao Yong; Li Huaming; Xu Jianxiong;

  • 作者单位

    Xiangtan Univ Coll Chem Xiangtan 411105 Hunan Peoples R China;

    Xiangtan Univ Coll Chem Xiangtan 411105 Hunan Peoples R China;

    Xiangtan Univ Coll Chem Xiangtan 411105 Hunan Peoples R China;

    Xiangtan Univ Coll Chem Xiangtan 411105 Hunan Peoples R China;

    Xiangtan Univ Coll Chem Xiangtan 411105 Hunan Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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