EFFECT OF INTERFACIAL INTERACTION ON RHEOLOGICAL AND CRYSTALLINE BEHAVIOR OF POLYPROPYLENE/BaSO4 COMPOSITES

WANG Ke; WU Jingshen; ZENG Hanmin

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EFFECT OF INTERFACIAL INTERACTION ON RHEOLOGICAL AND CRYSTALLINE BEHAVIOR OF POLYPROPYLENE/BaSO4 COMPOSITES

Research Article | 更新时间：2021-03-19

- EFFECT OF INTERFACIAL INTERACTION ON RHEOLOGICAL AND CRYSTALLINE BEHAVIOR OF POLYPROPYLENE/BaSO4 COMPOSITES
- Acta Polymerica Sinica Issue 6, Pages: 697-701(2001)
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- Published：20 December 2001，
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WANG Ke, WU Jingshen, ZENG Hanmin. EFFECT OF INTERFACIAL INTERACTION ON RHEOLOGICAL AND CRYSTALLINE BEHAVIOR OF POLYPROPYLENE/BaSO4 COMPOSITES. [J]. Acta Polymerica Sinica (6):697-701(2001)
DOI：

WANG Ke, WU Jingshen, ZENG Hanmin. EFFECT OF INTERFACIAL INTERACTION ON RHEOLOGICAL AND CRYSTALLINE BEHAVIOR OF POLYPROPYLENE/BaSO4 COMPOSITES. [J]. Acta Polymerica Sinica (6):697-701(2001) DOI：

摘要

制备了一系列具有不同界面状态的聚丙烯 (PP)/硫酸钡(BaSO4)复合体.PP-BaSO4的界面分别用硅烷、硬脂酸、马来酸酐接枝聚丙烯(PP-g-MAH)改性 .研究表明

填充体系的熔体粘度和熔体弹性均高于基体 .以硅烷和PP-g-MAH进行界面改性后

PP-BaSO4的界面相互作用加强

导致复合体系中的熔体粘度和熔体弹性进一步提高

同时BaSO4对PP的成核活性提高 .填料用硬脂酸处理后

硬脂酸能够在填料粒子表面上形成一个包覆层

使粒子与PP的亲和性改善 .同时该包覆层具有润滑作用

使得复合体系的熔体粘度和熔体弹性下降

并使得该体系中BaSO4的成核活性低于硅烷和处理的体系 .本文探讨了由复合体系的熔体粘度定量比较填充复合体系中聚合物-填料界面相互作用的方法

讨论了界面改性对复合体系流变性质和结晶行为影响的机理.

Abstract

A grouD of polypropylene (PP)／barium sulfate (BaSO4) composites with different polymer-filler interfacial interaction were prepared by treating the fillers with coupling agents or incorporating functionalized PP (PP-g-MAH)．The effect of interfacial modification on the rheological and crystalline behavior of the composites was investigated．It is shown that the interfacial adhesion between the filler and matrix was increased when the fillers were treated with silane or tlle PP-g-MAH was added into the composites．Under such circumstances

the mobility of the PP chains decreased

leading to high shear viscosity

shear stress and melt elasticity．On the other hand

the improved polymer-filler compatibility contributed to the increase of the heterogeneous nucleating activity of the filler on the PP．A model of“effective occupied volume” was employed to illustrate the effect interracial interaction and a parameter was introduced to evaluate the interfacial interaction quantitatively．

关键词

聚丙烯硫酸钡界面流变行为结晶行为

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Related Institution

Key Laboratory for Ultrafine Materials of Ministry of Education, East China University of Science and Technology

1,2),GAO Xueqin~2,YUAN Yi~2,SHEN Kaizhi~2

四川大学高分子科学与工程学院高分子材料工程国家重点实验室

四川大学高分子科学与工程学院高分子材料工程国家重点实验室成都

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