Li Jiarong, Chen Fu, Yang Long, Jiang Long, Dan Yi
State Key Laboratory of Polymer Materials Engineering of China (Sichuan University), Polymer Research Institute of Sichuan University, Chengdu 610065, China.
State Key Laboratory of Polymer Materials Engineering of China (Sichuan University), Polymer Research Institute of Sichuan University, Chengdu 610065, China.
Spectrochim Acta A Mol Biomol Spectrosc. 2017 Sep 5;184:361-367. doi: 10.1016/j.saa.2017.04.075. Epub 2017 Apr 29.
Fourier Transform Infrared Spectroscopy (FTIR) is adopted to study the aging characteristics of poly(acrylonitrile-butadiene-styrene)/polycarbonate (ABS/PC) blend under UV-irradiation in air by analyzing the variation of the three main absorbance at about 967cm, 1720cm and 3420cm associated with carbon-hydrogen bonds belonging to 1,4 butadiene, carbonyl and hydroxyl groups, respectively. Results indicate that, under UV-irradiation in air, the photo-oxidation of the blend is not a simple combination of the photo-oxidation of corresponding ABS and PC themselves and takes place predominantly at the ABS component. Due to the interaction between the two components and the Fries rearrangement taken place in the PC component during the UV-irradiation in air, the ABS/PC blends behave higher photo-stability than ABS has.
采用傅里叶变换红外光谱（FTIR）通过分析在约967cm、1720cm和3420cm处分别与属于1,4 - 丁二烯的碳氢键、羰基和羟基相关的三个主要吸光度的变化，来研究聚（丙烯腈 - 丁二烯 - 苯乙烯）/聚碳酸酯（ABS/PC）共混物在空气中紫外线辐照下的老化特性。结果表明，在空气中紫外线辐照下，共混物的光氧化不是相应的ABS和PC自身光氧化的简单组合，且主要发生在ABS组分上。由于两种组分之间的相互作用以及在空气中紫外线辐照期间PC组分中发生的弗里斯重排，ABS/PC共混物表现出比ABS更高的光稳定性。
