应用化学 ›› 1995, Vol. 0 ›› Issue (6): 17-20.

• 研究论文 • 上一篇    下一篇

辐照聚乙烯的熔融和重结晶

王国英, 陈南羽, 姜炳政   

  1. 中国科学院长春应用化学研究所高分子物理开放实验室, 长春 130022
  • 收稿日期:1995-01-18 修回日期:1995-04-28 出版日期:1995-12-10 发布日期:1995-12-10
  • 基金资助:
    国家自然科学基金资助课题

Melting and Recrystallization of irradiated Polyethylene

Wang GLioying, Chen Nanyu, Jiang Bingzheng   

  1. Laboratory of Polymer Physics, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchu, 130022
  • Received:1995-01-18 Revised:1995-04-28 Published:1995-12-10 Online:1995-12-10

摘要: 用差示扫描量热法(DSC),小角X-射线散射(SAXS),广角X-射线衍射(WAXD)等考察了辐照聚乙烯的熔融和重结晶.辐照破坏了聚乙烯结晶结构,使其熔融温度、结晶度均随辐照剂量的增加而降低.将辐照聚乙烯熔融再结晶,其重结晶度、熔融温度随辐照剂量而下降的幅度较大.其原因被归结为片晶劈裂.

关键词: 聚乙烯, 辐照效应, 差示扫描量热法, 小角X-射线散射, 广角X-射线衍射

Abstract: The behaviour of melting and recrystallization of irradiated polyethylene has beeninvestigated by using differential scanning calorimetry(DSC),small angle X-ray scattering(SAXS)and wide angle X-ray diffraction (WAXD) techniqties.It is indicated that the crys-talline structure of polyethylene was damaged and both apparent heat of fusion and crys-tallinity redticed with increasing radiation dose.After the irradiated polyethylene was meltedand then recrystallized,the recrystallinity and melting temperature decreased with radiationdose.

Key words: polyethylene, irradiation effect, differential scanning calorimetry, small angle X-ray scattering, wide angle X-ray diffraction