红外ATR光谱法与紫外光谱法研究高聚物老化  

Investigations on the Ageing of Polymer by IR (ATR) and UV Sectroscopy

作　　者：金晓英[1] 金桂林[1] 潘孝仁[1] 金乾元[1] 李国梅 

机构地区：[1]华东化工学院,200237

出　　处：《塑料工业》1992年第1期43-46,共4页China Plastics Industry

摘　　要：用红外ATR光谱法和紫外光谱法研究了聚丙烯酸酯类和丙烯酸丁酯—苯乙烯共聚物的老化过程。结果表明,这两种方法能有效地研究高聚物老化的动力学过程,在光、热、氧的作用下,高聚物的侧酯基和部分主链断裂,聚苯乙烯成分能延缓侧酯基的断裂。由试样经耐候试验机及氮分子激光两种老化处理的结果表明,后者导致高聚物的光降解速率比前者高9个数量级,因此,氮分子激光老化是一种研究高聚物光降解的好方法。The ageing of polyacrylate and butyl acrylate styrene copolymer was investigated by IR(ATR)and UV spectroscopy. The results showed that the dynamical process of the ageing of polymer could be investigated effectively by the above mentioned two methods; the lateral ester group and some main chains of polymer broke of polymer broke under the action of light, heat and oxygen; the break of the lateral ester groups could be delayed by polystyrene. The results of ageing treatment by weathering machine and N_2 laser showed that the degradation rate of polymer by N_2 laser was 9 orders of magnitude larger than that by weathering machine, and the N_2 laser method was an ideal nethod tot the investigation on the degradation of polymer.

关 键 词：聚合物 老化 红外ATR光谱 紫外光谱 

分 类 号：O631.33[理学—高分子化学]