ATOM TRANSFER RADICAL POLYMERIZATION AND THERMAL PROPERTIES OF A STARSHAPED POSS/PMMA COMPOSITE

LIU Lei; WANG Wenping; JIE Xiaoxiao; CAO Hengming; FEI Ming

doi:10.3724/SP.J.1105.2010.00010

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ATOM TRANSFER RADICAL POLYMERIZATION AND THERMAL PROPERTIES OF A STARSHAPED POSS/PMMA COMPOSITE

Research Article | 更新时间：2021-03-19

- ATOM TRANSFER RADICAL POLYMERIZATION AND THERMAL PROPERTIES OF A STARSHAPED POSS/PMMA COMPOSITE
- Acta Polymerica Sinica Issue 1, Pages: 10-14(2010)
- 作者机构：
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- DOI：10.3724/SP.J.1105.2010.00010
  CLC：
- Published：20 January 2010，
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LIU Lei, WANG Wenping, JIE Xiaoxiao, CAO Hengming, FEI Ming. ATOM TRANSFER RADICAL POLYMERIZATION AND THERMAL PROPERTIES OF A STARSHAPED POSS/PMMA COMPOSITE. [J]. Acta Polymerica Sinica (1):10-14(2010)
DOI：

LIU Lei, WANG Wenping, JIE Xiaoxiao, CAO Hengming, FEI Ming. ATOM TRANSFER RADICAL POLYMERIZATION AND THERMAL PROPERTIES OF A STARSHAPED POSS/PMMA COMPOSITE. [J]. Acta Polymerica Sinica (1):10-14(2010) DOI： 10.3724/SP.J.1105.2010.00010.

摘要

以-氯丙基三乙氧基硅烷为原料合成八官能团-氯丙基多面体低聚倍半硅氧烷（POSS），以该POSS为引发剂，通过原子转移自由基聚合（ATRP）合成具有星型结构的POSS/PMMA复合材料.通过傅立叶红外（FTIR）、核磁共振（NMR）、凝胶渗透色谱（GPC）和X射线衍射（XRD）等手段对POSS和POSS/PMMA的化学组成和结构进行了表征，结果表明已经合成八官能团-氯丙基POSS，POSS/PMMA复合材料具有分子设计的预定结构，且复合材料的分子结构得到了较好的控制.通过ATRP法实现了POSS在聚合物中的单分散.此外，TGA的研究表明，POSS的引入提高了聚合物的热稳定性.

Abstract

star-shaped poly(methyl methacrylate) with polyhedral oligomeric silsesquioxane (POSS) as a core was synthesized by atom thansfer radical polymerization (ATRP)

using octa(-chloropropyl) POSS as a initiator and CuCl/2

2-bipyridine as catalyst system-Octa(-chloropropyl) POSS was prepared in methanol through the hydrolysis and condensation of chloropropyltriethoxysilane

and a yield of 28% was obtained.The welldefined structures of POSS and POSS/PMMA composite were fully characterized by FTIR

NMR

GPC and XRD

with results showing POSS molecule was successfully formed

and the mono-dispersion of POSS was achieved by ATRP

meaning that there was only one POSS molecule in a polymer chain.The polydispersity indices (PDI) of POSS/PMMA composite with different polymerization time were 1.20 and 1.14

according to the measurement of GPC.The TGA results indicated the thermal stability of POSS/PMMA composite enhanced from 281℃ to 303℃ with the increase of POSS content

which was due to the incorporation of POSS molecules

关键词

多面体低聚倍半硅氧烷（POSS）原子转移自由基聚合（ATRP）复合材料热稳定性

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华东理工大学材料科学与工程学院上海市先进聚合物重点实验室

1Department of Polymeric Materials and Engineering,College of Material and Energy,Guangdong University of Technology

汕头大学理学院化学系

汕头大学理学院化学系广州510006汕头大学理学院化学系汕头

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