新型添加型光敏剂芳基三唑制备光降解塑料及性能研究  

Study on Properties of Photodegradable Plastic Prepared by LDPE Doped with New Photosensitizer Aryltriazole

作　　者：王艳霞[1] WANG Yan-xia(ZhuMaDian Vocational and Technical College,Zhumadian 463000,China)

机构地区：[1]驻马店职业技术学院,河南驻马店463000

出　　处：《塑料科技》2021年第2期48-50,共3页Plastics Science and Technology

摘　　要：利用芳基三唑分子吸收辐射能产生电子跃迁的能力,制备了一种光可降解的低密度聚乙烯(LDPE)。利用扫描电镜观察了有无添加光敏剂以及光照后的塑料薄膜的微观结构;利用傅里叶红外光谱仪表征了光降解前后,LDPE的光能团特性;利用紫外可见光谱测定了添加光敏剂前后薄膜的吸光度,并测定了其基本的力学性能。结果表明:芳基三唑光敏剂可明显促进LDPE的光降解速率,重均分子量下降了24.72%。A photodegradable low-density polyethylene(LDPE)was prepared by using the ability of aryltriazole molecules to absorb radiation energy to produce electronic transitions.Scanning electron microscope was used to observe the microstructure of plastic film with or without photosensitizer;Fourier infrared spectrometer was used to characterize the characteristics of LDPE light energy group before and after photodegradation;UV-visible spectrum was used to measure the absorbance of the film before and after photosensitizer was added;And measured its basic mechanical properties.The results show that the aryltriazole photosensitizer significantly promotes the photodegradation rate of LDPE,and the weight average molecular mass is reduced by 24.72%.

关 键 词：光降解塑料 光敏剂 LDPE 芳基三唑 

分 类 号：TQ325.12[化学工程—合成树脂塑料工业]