UV photodegradation of polypropylene thick bars containing rutile-type TiO2 nanorods

doi:10.1007/s10118-014-1472-3

CORC > 化学研究所 > 中国科学院化学研究所

	UV photodegradation of polypropylene thick bars containing rutile-type TiO2 nanorods
	Qi, Lin 1; Ding, Yan-fen 1; Dong, Quan-xiao 1,2; Wen, Bin 1; Liu, Peng 1; Wang, Feng 1; Zhang, Shi-min 1; Yang, Ming-shu
刊名	CHINESE JOURNAL OF POLYMER SCIENCE
	2014-07-01
卷号	32 期号:7 页码:834-843
关键词	Polypropylene Titanium Dioxide Nanorods Photodegradation Molecular Weight Surface Micro-cracks
ISSN号	0256-7679
DOI	10.1007/s10118-014-1472-3
英文摘要	Surface modified rutile-type titanium dioxide (CST) nanorods were used as a UV absorber in polypropylene (PP) thick bars in combination with the hindered amine light stabilizer (HALS) ChimassorbA (R) 944 (C944). For all of the tested samples, the photodegradation was mainly limited in the region near the exposed surface, as proved by the carbonyl index and molecular weight. Compared with the typical HALS photostabilization system containing organic hindered phenol UV absorber TinuvinA (R) 328 (T328), the thickness of photodegradation region for PP/C944/CST was only a quarter to that for PP/C944 and PP/C944/T328, while the rates of reduction in molecular weight and increase in carbonyl index were much lower. Optical microscopic observation showed that the evolution of surface micro-cracks in PP/C944/CST was quite different from that in the other samples, while scanning electronic micrographs revealed that the depth of the micro-cracks in PP/C944/CST was much shorter than that in the others. It is therefore concluded that the protection of CST on PP thick bars is mainly attributed to the outstanding UV-shielding and cracks-blocking abilities.
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000336291000003
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/52257]
专题	中国科学院化学研究所
作者单位	1.Chinese Acad Sci, Inst Chem, Beijing Natl Lab Mol Sci, Key Lab Engn Plast, Beijing 100190, Peoples R China 2.Beijing Bldg Construct Res Inst Co Ltd, Beijing Engn Res Ctr Architectural Funct Macromol, Beijing 100039, Peoples R China
推荐引用方式 GB/T 7714	Qi, Lin,Ding, Yan-fen,Dong, Quan-xiao,et al. UV photodegradation of polypropylene thick bars containing rutile-type TiO2 nanorods[J]. CHINESE JOURNAL OF POLYMER SCIENCE,2014,32(7):834-843.
APA	Qi, Lin.,Ding, Yan-fen.,Dong, Quan-xiao.,Wen, Bin.,Liu, Peng.,...&Yang, Ming-shu.(2014).UV photodegradation of polypropylene thick bars containing rutile-type TiO2 nanorods.CHINESE JOURNAL OF POLYMER SCIENCE,32(7),834-843.
MLA	Qi, Lin,et al."UV photodegradation of polypropylene thick bars containing rutile-type TiO2 nanorods".CHINESE JOURNAL OF POLYMER SCIENCE 32.7(2014):834-843.