English

应用科学学报 ›› 1988, Vol. 6 ›› Issue (3): 260-264.

• 论文 • 上一篇    下一篇

二苯甲酮敏化的3,4-聚异戊二烯光交联反应的非环化非降解过程研究

黄骏廉, 于同隐   

  1. 复旦大学
  • 收稿日期:1985-05-20 出版日期:1988-09-30 发布日期:1988-09-30

STUDY ON UNCYCLIZED AND UNDEGRADED PROCESS OFPHOTOCROSSLINKING REACTION OF BENZOPHENONE-SENSITIZED 3, 4-POLYISOPRENE

HUANG JUNLIAN, YU TONGYIN   

  1. Institute of Material Science, Fudan University, Shanghai
  • Received:1985-05-20 Online:1988-09-30 Published:1988-09-30

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64

被引次数

1

摘要： 人们在对聚二烯烃类化合物进行研究的过程中,发现当对这些化合物加热、辐照γ射线或用化学方法处理时,它们在交联的同时,总伴随着大分子的降解和环化过程[1].为此Raven[2]、Okamoto[3]和Golub[4]等曾提出三种不同的机理进行解释.本文用IR、NMR和化学分析等方法,证明了二苯甲酮敏化的3,4-聚异戊二烯的光交联反应并不伴随着环化过程;光照前后二苯甲酮敏化的3,4-聚异戊二烯的GPC测定也证实了其分子量分布并未发生变化.因此该体系的光交联是一个非环化、非降解反应.

Abstract: It was found that the photocrosslinking reaction of benzophenone-sensitized 3, 4-polyisoprene was an uncyclized process by means of IR, NMR and chemical analysis.
The measurement of GPC proved that the molecular weight distribution of benzophenone-sensitized 3, 4-polyisoprene which was irradiated by an 80 W high pressure Hg lamp was the same as unsensitized 3, 4-polyisoprene.
The conclusion therefore, is that the photocrosslinking reaction of this system was an uncyclized and undegraded process.