The effect of concentration of acrylic acid, dose rates and temperature on preirradiated graft of natural rubber-based thermoplastic elastomer

被引：6

作者：

Binh, D

Huy, HT

机构：

[1] Ctr Nucl Techniques, Radiat Proc Dept, Hochiminh City, Vietnam

[2] Univ Hochiminh City, Dept Chem, Coll Nat Sci, Hochiminh City, Vietnam

来源：

RADIATION PHYSICS AND CHEMISTRY | 1998年 / 53卷 / 02期

关键词：

acrylic acid; degree of grafting; thermoplastic elastomer; dose rate; power; activation energy;

D O I：

10.1016/S0969-806X(98)00009-7

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 [物理化学]; 081704 [应用化学];

摘要：

Grafting acrylic acid (AAc) onto thermoplastic elastomer (TE) films, a kind, of product from natural rubber latex block-grafted by methyl methacrylate monomer was investigated. The preirradiated dose from a gamma Co-60 source for TE at 75 kGy was considered to be useful. Significant concentration of AAc aqueous solution for the grafting process is 20% (vol%). Dose rate of about 3.4 kGy/h is more effective for the graft. The temperature of around 90 degrees C is suitable for obtaining a higher degree of graft. It is observed that the rate of grafting of AAc onto TE is proportional to 0.48 power of dose rate and 1.9 power of AAc concentration. The rate of grafting can be expressed as R-g= k.(IM1.9)-M-0.48.. On the other hand, overall activation energy of the graft is estimated about 7.2 Kcal/mol. The FTIR spectrum analysis of TE and TE-g-AAc films was proceeded. (C) 1998 Elsevier Science Ltd. All rights reserved.

引用

页码：177 / 180

页数：4

共 8 条

[1]

THE USE OF GRAFT CO-POLYMERS AS ENZYME SUPPORTS - THE PREPARATION AND USE OF POLYETHYLENE-CO-ACRYLIC ACID SUPPORTS [J].