SYNTHESIS OF AMPHIHILIC SEMIFLUORINATED CYLINDRICAL BRUSHES PBIEM-g-(PAA-b-PFA) VIA ATRP

YANG Tingting; XU Yingying; YAO Li; PENG Hui; CHENG Shiyuan

doi:10.3724/SP.J.1105.2009.01146

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SYNTHESIS OF AMPHIHILIC SEMIFLUORINATED CYLINDRICAL BRUSHES PBIEM-g-(PAA-b-PFA) VIA ATRP

Research Article | 更新时间：2021-03-19

- SYNTHESIS OF AMPHIHILIC SEMIFLUORINATED CYLINDRICAL BRUSHES PBIEM-g-(PAA-b-PFA) VIA ATRP
- Acta Polymerica Sinica Issue 11, Pages: 1146-1153(2009)
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- DOI：10.3724/SP.J.1105.2009.01146
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- Published：20 November 2009，
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YANG Tingting, XU Yingying, YAO Li, PENG Hui, CHENG Shiyuan. SYNTHESIS OF AMPHIHILIC SEMIFLUORINATED CYLINDRICAL BRUSHES PBIEM-g-(PAA-b-PFA) VIA ATRP. [J]. Acta Polymerica Sinica (11):1146-1153(2009)
DOI：

YANG Tingting, XU Yingying, YAO Li, PENG Hui, CHENG Shiyuan. SYNTHESIS OF AMPHIHILIC SEMIFLUORINATED CYLINDRICAL BRUSHES PBIEM-g-(PAA-b-PFA) VIA ATRP. [J]. Acta Polymerica Sinica (11):1146-1153(2009) DOI： 10.3724/SP.J.1105.2009.01146.

摘要

以聚甲基丙烯酸［2-(2-溴异丁酰氧)］乙酯（PBIEM）为大分子引发剂，采用接出(grafting from)原子转移自由基聚合（ATRP）技术合成了以聚丙烯酸叔丁酯-b-聚含氟丙烯酸酯为侧链的柱状分子刷PBIEM-g-(PtBA-b-PFA).通过GPC，1H-NMR和FTIR对PBIEM-g-(PtBA-b-PFA)组成和结构进行了表征，证实ATRP过程中没有发生分子间或分子内偶合反应，制备得到可控性好的含氟嵌段共聚物刷.利用大分子链中叔丁酯基团的水解反应生成两亲的含氟柱状刷PBIEM-g-(PAA-b-PFA)，原子力显微镜可直接观察到PBIEM-g-(PAA-b-PFA)特征的核壳型柱状结构，得到聚合物刷的整体长度为ln＝54～72 nm.

Abstract

Cylindrical brushes with poly(t-butyl acrylate)-b-poly(fluoroalkyl acrylate)(PtBA-b-PFA) semi~fluo~ri~na~ted diblock copolymer side chains

were successfully prepared via grafting from technique using atom transfer radical polymerization(ATRP).Poly(2-(2-bromoisobutyryloxy)ethyl methacrylate) was used as a ma~cro~ini~tia~tor.The formation of well-defined brushes was confirmed by GPC and 1H-NMR.Then the selective hydrolysis of the PtBA block of side chains results in the amphiphilic semifluorinated cylindrical brushes PBIEM-g-(PAA-b-PFA).The characteristic cylindrical structure of the brush PBIEM-g-(PAA-b-PFA) was directly visualized on mica by atomic force microscopy (AFM).Though a narrow length distribution (PDI=1.08) of a macroinitiator PBIEM was obtained

the total length ln of brushes was varied within 54～72 nm.By adjusting the proper ratio of mixing solvents in the spinning-coating process on mica

the core and the shell can be visualized independently by AFM.

关键词

两亲柱状刷含氟丙烯酸酯（FA）原子转移自由基聚合(ATRP)

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