THE ISOTHERMAL CRYSTALLIZATION BEHAVIOR OF MALEIC ANHYDRIDE GRAFT POLYPROPYLENE AND ITS IONOMERS
返回论文页
Research Article|更新时间:2021-03-19
|
THE ISOTHERMAL CRYSTALLIZATION BEHAVIOR OF MALEIC ANHYDRIDE GRAFT POLYPROPYLENE AND ITS IONOMERS
Acta Polymerica SinicaIssue 1, Pages: 87-92(1999)
作者机构:
作者简介:
基金信息:
DOI:
CLC:
Published:20 February 1999,
扫 描 看 全 文
YU Jian, HE Jiasong. THE ISOTHERMAL CRYSTALLIZATION BEHAVIOR OF MALEIC ANHYDRIDE GRAFT POLYPROPYLENE AND ITS IONOMERS. [J]. Acta Polymerica Sinica (1):87-92(1999)
DOI:
YU Jian, HE Jiasong. THE ISOTHERMAL CRYSTALLIZATION BEHAVIOR OF MALEIC ANHYDRIDE GRAFT POLYPROPYLENE AND ITS IONOMERS. [J]. Acta Polymerica Sinica (1):87-92(1999)DOI:
THE ISOTHERMAL CRYSTALLIZATION BEHAVIOR OF MALEIC ANHYDRIDE GRAFT POLYPROPYLENE AND ITS IONOMERS
The kinetics of isothermal crystallization has been studied for Na+
Mn2+ and Ca2+ ionomers based on maleic anhydride graft polypropylene(PP g MAH) by DSC
compared with pure PP and PP g MAH.Avrami equation was valid for analyzing the experimental data.The fact that Avrami exponents close to three for all the samples implied the mode of PP crystallization was not changed by the solid graft modification.The introduction of ions increased the crystallization rate(characterized by the reciprocal of the half-life of the crystallization
t-11/2) dramatically.At the same time
the increase of neutralization also increased the crystallization rate.The reducing of the interfacial free energies of the side surfaces of the nucle σe
calculated from Hoffman theory
bu the anhydride group and ions had the same trend with the results of Avrami equation.