The Influence of Nucleating Agent on Crystallization Behavior and Properties of Polypropylene and Its Copolymer with Ethylene

Abstract

Abstract: The influences of nucleating agent EDBSon crystallization behavior and properties of polypropylene(iPP) and its copolymer with a small amount(4.48%, molar fraction) of ethylene(CPP) were studied. DSCresults indicated that the crystallization temperature of iPPand CPPsamples with 0.5%(mass fraction) EDBSobviously increased and the degree of crystallinity of these samples became higher.In addition, adding small amount of EDBSenhanced the crystallization of the low isotacticity and low molecular weight segments of the CPP. PLMresults showed that their spherulite size decreased markedly, and as a result, the transmittance and haze of the films were all improved.

Key words: Nucleating agent, Polypropylene, Crystallization behavior, Crystal morphology

CLC Number:

O631

TrendMD:

SHI Hong-Wei, JIN Ying-Tai, YANG De-Cai  . The Influence of Nucleating Agent on Crystallization Behavior and Properties of Polypropylene and Its Copolymer with Ethylene[J]. Chem. J. Chinese Universities, 2002, 23(8): 1610.

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The Influence of Nucleating Agent on Crystallization Behavior and Properties of Polypropylene and Its Copolymer with Ethylene

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