Synthesis and characterization of ultra-high molecular weight polystyrene by irradiation

PENG Chaorong; CHEN Hao; WANG Xiuying; ZHOU Xuemei; CHEN Zhuping; DENG Huachuan; WANG Jingxia

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Synthesis and characterization of ultra-high molecular weight polystyrene by irradiation

更新时间：2023-03-30

- Synthesis and characterization of ultra-high molecular weight polystyrene by irradiation
- Journal of Radiation Research and Radiation Processing Vol. 25, Issue 6, Pages: 355-358(2007)
- 作者机构：
  
  1.四川省原子能研究院　成都　610066
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PENG Chaorong, CHEN Hao, WANG Xiuying, et al. Synthesis and characterization of ultra-high molecular weight polystyrene by irradiation. [J]. Journal of Radiation Research and Radiation Processing 25(6):355-358(2007)
DOI：

PENG Chaorong, CHEN Hao, WANG Xiuying, et al. Synthesis and characterization of ultra-high molecular weight polystyrene by irradiation. [J]. Journal of Radiation Research and Radiation Processing 25(6):355-358(2007) DOI：

摘要

采用,60,Co γ射线引发苯乙烯(Styrene, St)乳液聚合制备超高分子量聚苯乙烯(Ultra-high molecular weight polystyrene, UHMWPS)。研究了不同反应条件对单体转化率和分子量的影响，并采用傅立叶变换红外光谱、核磁共振氢谱、差示扫描量热法和凝胶渗透色谱对其进行了表征。结果表明，当剂量率为0.6 Gy·min,-1,时，得到聚合物的重均分子量为1.63×10,6,，分子量分布指数为2.88，玻璃化转变温度为78℃。

Abstract

Ultra-high molecular weight polystyrene (UHMPS) was prepared by emulsion polymerization initiated with gamma ray. The effects of reaction conditions on conversion and molecular weight of polystyrene was investigated. UHMPS was characterized by means of gel permeation chromatography (GPC), Fourier transform infrared spectrometer (FT-IR), nuclear magnetic resonance (,1,HNMR) and differential scanning calorimeter (DSC). The results show that the weight-average molecular weight (,M,w,) of polystyrene (PS) which was synthesized at the dose rate of 0.6Gy/min is up to1.63×10,6, molecular weight distribution is 2.88 and ,T,g, is 78℃.

关键词

超高分子量聚苯乙烯辐射乳液聚合

Keywords

Ultra-high molecular weight polystyreneIrradiationEmulsion polymerization

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