硬脂酸锰改性LDPE降解材料的研究  

Study on LDPE Degradation Material Modified with Manganese Stearate

作　　者：葛铁军[1] 戚晓兵 

机构地区：[1]沈阳化工大学塑料工程研究中心 沈阳市高性能化塑料工程重点实验室,辽宁沈阳110142

出　　处：《塑料科技》2015年第5期65-69,共5页Plastics Science and Technology

基　　金：沈阳市科技局科技创新专项(130181);沈阳市科技局社会发展科技攻关专项(130571)

摘　　要：将维生素C、聚乙二醇1000和交联淀粉作为降解剂按一定配比加入到低密度聚乙烯(LDPE)基体中,采用不同用量的硬脂酸锰与上述LDPE降解材料制取薄膜并进行老化试验,用红外光谱、扫描电镜和力学性能分析研究了硬脂酸锰对LDPE降解材料热氧降解性和光降解性的影响。结果表明:当加入0.4%的硬脂酸锰时,LDPE的光和氧化降解性增强,降解过程中产生大量羰基,材料质量减少,其断面出现孔洞,可促使LDPE进一步完全降解。Oxidative degradation agent vitamin C, biodegradable agent crosslinked starch, and moisture degradation agent polyethylene glycol 1000 with a certain mixture ratio were added into low- density polyethylene （LDPE）. Then the film was made with manganese stearate with variable amount and degradable LDPE materials. The effects of manganese stearate on thermal degradation and photocatalytic degradation of LDPE were studied by infrared spectra, scanning electron microscopic analysis and mechanical properties test. The results show that when manganese stearate content is 0.4%, the light and oxidative degradation of LDPE improve, and a large number of carbonyl groups generate, the mass of LDPE decreases and the holes in the fracture of the composites can promote the further degradation of LDPE.

关 键 词：低密度聚乙烯 硬脂酸锰 热氧降解性 光降解性 

分 类 号：TQ325.12[化学工程—合成树脂塑料工业]