RADIATION-GRAFTING OF ACRYLIC-ACID ONTO ULTRAHIGH MOLECULAR, HIGH-STRENGTH POLYETHYLENE FIBER

被引:24
作者
KAJI, K
ABE, Y
MURAI, M
NISHIOKA, N
KOSAI, K
机构
[1] JAPAN ATOM ENERGY RES INST,OSAKA LAB RADIAT CHEM,NEYAGAWA,OSAKA 572,JAPAN
[2] OSAKA ELECTROCOMMUN UNIV,NEYAGAWA,OSAKA 572,JAPAN
关键词
D O I
10.1002/app.1993.070470814
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
Radiation-induced grafting of acrylic acid onto ultrahigh molecular weight (UHMW) high-strength polyethylene fibers to impart heat resistance and dyeability was undertaken. A preirradiation method was employed for grafting in an aqueous solution of acrylic acid containing a small amount of Mohr's salt as inhibitor. The grafting rate for UHMW high-strength polyethylene fibers is one-tenth of that for high-density polyethylene fibers currently in use, and one-hundredth, for high-density polyethylene film. It has become clear that the preirradiation dose should be as low as 1 Mrad to keep the high strength of the starting fibers. The starting UHMW high-strength polyethylene fiber begins to shrink remarkably at around 145-degrees-C, showing a maximum shrinkage of 90%, and then breaks at 154-degrees-C. When a 24% acrylic acid graft is converted to calcium salt, the grafted fiber retains the fiber form even at 300-degrees-C and gives only a maximum shrinkage of 11%. The less than 1% acrylic acid graft UHMW high-strength polyethylene fibers and their calcium salt can be dyed to a deep shade with cationic dyes, whereas the starting fibers cannot be dyed with usual dyes including the cationic dye.
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页码:1427 / 1438
页数:12
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