Influence of compatibilization on the mechanical behavior of poly(trimethylene terephthalate)/poly(ethylene-octene) blends

被引：49

作者：

Guerrica-Echevarria, G. ^{[1
]}

Eguiazabal, J. . ^{[1
]}

Nazabal, J. ^{[1
]}

机构：

[1] EHU, UPV, Fac Quim, Dept Ciencia & Tecnol Polimeros,Inst Mat Polimer, San Sebastian 20080, Spain

来源：

EUROPEAN POLYMER JOURNAL | 2007年 / 43卷 / 03期

关键词：

poly(trimethylene terephthalate); blend; impact modifier; toughness; interparticle distance;

D O I：

10.1016/j.eurpolymj.2006.11.036

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Poly(trimethylene terephthalate) (PTT) based blends toughened with up to 30 wt.% of a partially maleinized poly(ethylene-octene) copolymer (mPEO) were obtained by melt mixing. The blends were composed of two pure amorphous phases and a partially crystalline PEO phase. The rubber modification clearly compatibilized the blends leading to a decrease in the dispersed phase size. The decrease was not enough to attain the brittle-tough transition, but an increase in the shear rate gave rise to an additional decrease in the dispersed phase size and in the interparticle distance (IDc) that led to very high toughness values (15-fold the notched impact strength of the matrix) at rubber contents above 25 wt.%. The critical interparticle distance of the blends was 0.17 mu m. A comparison between this IDc and those of PBT/mPEO and PET/mPEO blends was explained in terms of their interfacial tensions. (c) 2006 Elsevier Ltd. All rights reserved.

引用

页码：1027 / 1037

页数：11

共 64 条

[51] On the properties and processing of polyethylene terephthalate/styrene-butadiene rubber blend [J].