Polypropylene plasticization and photodegradation with a TiO2/poly(ethylene oxide)/methyl linoleate paint
Polypropylene plasticization and photodegradation with a TiO2/poly(ethylene oxide)/methyl linoleate paint
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TiO2/聚环氧乙烷/亚油酸甲酯涂料的聚丙烯塑化和光降解
DOI：
10.1002/app.39909
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发表时间：
2014
期刊：
影响因子：
--
通讯作者：
H. Nakatani
中科院分区：
文献类型：
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作者：
K. Miyazaki;T. Arai;H. Nakatani
采用二氧化钛/聚氧化乙烯(PEO)/植物油漆光催化体系对聚丙烯(PP)薄膜进行光降解。光降解经历了两个发展阶段：PP最初与植物油成分的光反应产生的亚油酸自由基反应。其次，亚油酸接枝聚合物发生裂解，导致PP链断裂。以亚油酸甲酯(ML)为原料，对该工艺进行了详细研究。与原始PP相比，24 h光降解PP的熔点略有下降，48 h和96 h光降解PP的熔点显著降低。光降解48h结晶度(χc)下降，96h结晶度急剧增加。与未降解PP相比，光降解24 h的PP具有77%的杨氏模量、88%的拉伸强度和103%的断裂应变。ML接枝聚合和分解导致了PP的塑化和化学结晶，导致PP的降解。©2013威利期刊公司J.应用。波兰姆。科学，2014,131,39909。
The photodegradation of polypropylene (PP) film was performed by a TiO2/polyethylene oxide (PEO)/plant oil paint photocatalyst system. The photodegradation underwent two stages of development as follows: Initially PP reacted with linoleic acid radical originated from the photoreaction of plant oil component. Second, the linoleic acid graft‐polymer was decomposed, and then PP chain scission was caused. The process was studied using methyl linoleate (ML) in detail. The melting point of the 24 h‐photodegraded PP slightly decreased, and those of the 48 h‐ and 96 h‐ones drastically did as compared with the pristine PP. The crystallinity (χc) decreased at the 48 h photodegradation time and drastically increased at the 96 h one. The 24 h‐photodegraded PP showed the 77% Young's modulus, 88% tensile strength, and 103% strain at break values to those of the pristine PP. The ML graft‐polymerization and decomposition brought about the PP plasticizing and chemi‐crystallization, causing the PP degradation. © 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci.2014,131, 39909.