摘要
将经表面热氧化的聚丙烯和聚乙烯膜在不加敏化剂的情况下,通过紫外光照射与光稳定剂甲基丙烯酸(2,2,6,6-四甲基哌啶)酯进行接枝聚合,以改善膜的光稳定性。研究了各种因素,包括热氧化时间,光照射时间、单体浓度及溶剂等对表面预氧化膜的光接枝含量的影响。实验结果表明,常用的有机溶剂除酮类外均不能使膜接枝;接枝以后膜的光稳定性有很大的提高。
Thermal peroxidized PP films and PE films were graft copolymerized with a light stabilizer,2,2,6,6-tera-methyl-piperidinyl-merhacrylate (MTMP), by UV-irradiation in the absence of sensitizers in order to improve the photostability of films. The influence of various factors, including the thermal peroxidizing time, irradiation time, monomer concentration and the type of solvents, on the grafting content of the peroxidized films was examined. It is shown that the graft copolymerization can not take place in common organic solvents except ketones, and the photostability of either grafted PP or grafted PE film increases greatly compared with that of the ungrafted film.
出处
《高分子学报》
SCIE
CAS
CSCD
北大核心
1989年第3期275-279,共5页
Acta Polymerica Sinica
基金
中国科学院科学基金的资助
关键词
聚烯烃膜
光接枝聚合
光稳定性
Polyolefine, surface photo-grafting, photostability
