MORPHOLOGY, THER MAL BEHAVIOR, AND MECHANICAL PROPERTIES OF NYLON6/ MULTI-MONOMER GRAFTED POLYPROPYLENE BLENDS

XIE Xuming; CHEN Nianhuan; LI Song

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MORPHOLOGY, THER MAL BEHAVIOR, AND MECHANICAL PROPERTIES OF NYLON6/ MULTI-MONOMER GRAFTED POLYPROPYLENE BLENDS

Research Article | 更新时间：2021-03-19

- MORPHOLOGY, THER MAL BEHAVIOR, AND MECHANICAL PROPERTIES OF NYLON6/ MULTI-MONOMER GRAFTED POLYPROPYLENE BLENDS
- Acta Polymerica Sinica Issue 5, Pages: 527-533(1999)
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- Published：20 October 1999，
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XIE Xuming, CHEN Nianhuan, LI Song. MORPHOLOGY, THER MAL BEHAVIOR, AND MECHANICAL PROPERTIES OF NYLON6/ MULTI-MONOMER GRAFTED POLYPROPYLENE BLENDS. [J]. Acta Polymerica Sinica (5):527-533(1999)
DOI：

XIE Xuming, CHEN Nianhuan, LI Song. MORPHOLOGY, THER MAL BEHAVIOR, AND MECHANICAL PROPERTIES OF NYLON6/ MULTI-MONOMER GRAFTED POLYPROPYLENE BLENDS. [J]. Acta Polymerica Sinica (5):527-533(1999) DOI：

摘要

用多组分熔融接枝的方法将甲基丙烯酸缩水甘油酯（ＧＭＡ）和苯乙烯（Ｓｔ）共同接枝于聚丙烯（ＰＰ）上

制得多单体接枝聚丙烯ＰＰ-ｇ-(ＧＭＡ-ｃｏ-Ｓｔ）．该接枝物具有高的ＧＭＡ接枝率．本研究利用ＦＴＩＲ、ＳＥＭ、ＴＥＭ、ＤＳＣ和力学性能测试等分析方法

研究了多组分熔融接枝聚丙烯（ＰＰ-ｇ-（ＧＭＡ-ｃｏ-Ｓｔ））对尼龙６／ＰＰ共混物的形态结构

Ｔｇ和力学性能的影响．结果表明

ＰＰ-ｇ-（ＧＭＡ-ｃｏ-Ｓｔ）中的环氧基团与尼龙６（ＰＡ６）末端的胺基发生化学反应

原位形成的ＰＰ-ＰＡ６共聚物能有效的改善ＰＡ６与ＰＰ的相容性

可以使ＰＰ均匀的分散在ＰＡ６基体中

相区尺寸明显减小

提高了拉伸强度．由于两相的相容性较好

从而共混物的Ｔｇ有明显的变化．此外

通过透射电镜观察

发现ＰＡ６／ＰＰ-ｇ-（ＧＭＡ-ｃｏ-Ｓｔ）（７０／３０）合金中存在着特殊的微相分离结构．

Abstract

In a previous study

the melt grafting of glycidal methacrylate( GMA) and styrene(St) onto polypropylene(PP) was carried out. The multi monomers melt grafted PP

PP-g-(GMA-co-St) was used as a compatibilizer of PA6/ PP blendsin this study . The addition of PP-g-(GMA-co-St) markedly improved the mechanical properties of the incompatibilized PA6/PP(PA6 content 70% )

particularly in the tensile strength of the blends . There arealso significant changes in glass transition temperature (Tg) for the blends characterized by DSC analysis

implying excellent compatibility between PA6 and PP with the addition of the PP-g-(GMA-co-St). Different blend morphologies were observed by SEM and TEM accordi9ng to the content of PP-g-(GMA-co-St) used.A special novel microphase separated structure in the PA6/PP-g-(GMA-co-St) blends were observed. It should be bud to the formation of PP-PA6 copolymer by chemical reactions occurred between GMA in PP-g-(GMA-co-St) and the terminal amino or carboxylic groups of PA6 during the melt mixing. The formation of PP-PA6 copolymer is also characterized by FTIR.

关键词

尼龙6聚丙烯多单体反应共混微相分离结构

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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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