Antiplasticization of a polyamide: a positron annihilation lifetime spectroscopy study

被引：31

作者：

Garcia, A

Iriarte, M

Uriarte, C

Iruin, JJ

Etxeberria, A

del Rio, J

机构：

[1] Univ Basque Country, UPV EHU, Inst Mat Polimer, POLYMAT,Dept Ciencia & Tecnol Polimeros, San Sebastian 20080, Spain

[2] Univ Complutense Madrid, Fac Fis, Dept Fis Mat, E-28040 Madrid, Spain

来源：

POLYMER | 2004年 / 45卷 / 09期

关键词：

antiplasticization; positron annihilation lifetime spectroscopy; polyamide;

D O I：

10.1016/j.polymer.2004.02.045

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

In order to modify the transport properties of the amorphous polyamide Trogamid-T(TM), several additives with structural characteristics that produce antiplasticization have been tested. Positron annihilation lifetime spectroscopy (PALS) has been used to determine both the size of free volume holes and the number of holes (free fractional free volume). Polyvinyl phenol (PVPh), 1,5 dihydroxy naphthalene (Ndiol) and a hexafluorinated Bisphenol A (HFBA) were chosen according to the results of a preliminary study based on density and PALS measurements with 15% of additive blends. Their blends with Trogamid show different behaviours: HFBA behaves clearly as a plasticizer while the polyvinyl phenol acts as an antiplasticizer. Ndiol has a more special effect: blend densities are greater than additive whereas the hole size decreases. (C) 2004 Elsevier Ltd. All rights reserved.

引用

页码：2949 / 2957

页数：9

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