Effects of bulk morphology on the mechanical properties of melt-blended PP/PS blends

被引：10

作者：

Yoshida, Kazuhiro ^{[1
,2
]}

Kawamura, Takanobu ^{[1
]}

Terano, Minoru ^{[3
]}

Nitta, Koh-hei ^{[1
]}

机构：

[1] Kanazawa Univ, Dept Chem Engn, Kanazawa, Ishikawa 9201192, Japan

[2] Tokyo Printing Ink Mfg Co Ltd, Kita Ku, Saitama 3310811, Japan

[3] Japan Adv Inst Sci & Technol, Sch Mat Sci, Tatunokuchi, Ishikawa 9321292, Japan

来源：

JOURNAL OF APPLIED POLYMER SCIENCE | 2008年 / 109卷 / 01期

关键词：

isotactic polypropylene; atactic polystyrene; blends; morphology; mechanical properties; polyolefins; polystyrene;

D O I：

10.1002/app.28014

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

We investigated the relationship between morphology and mechanical properties in binary blends of isotactic polypropylene (PP) and atactic polystyrene (PS) showing completely phase-separated morphology. The domain size and crystallinity in PP phase were controlled by the comp-molding conditions such as holding time in the hot-press and quenching temperature to prepare the sheets. The phase-inversion took place at 62.5 wt % of PS content and this leads to ductile-brittle transition at the blend composition. It was found that the mechanical properties of PP-rich blends are dominantly affected by the nature of the PP matrix and independent of the domain size of PS phase. This is associated with the interfacial separation between rigid PS droplets and PP matrix. (C) 2008 Wiley Periodicals, Inc.

引用

页码：211 / 217

页数：7

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