论文部分内容阅读
用N-溴代丁二酰亚胺的丙酮溶液在回流温度下对三甲硅基丙炔的均聚物和共聚物作了表面改性。XPS的研究表明,试样表面层中Br原子含量随溴化时间的增长而增加,C_(IS)谱变宽且产生来自C-O和C-Br结构的新谱线。红外光谱证明溴化反应产生CH_2Br结构。溴化使膜的气透性发生相应的变化,即α_(O_2/N_2)值增高,P_(O_2)值降低。
The homopolymers and copolymers of trimethylsilyl propyne were surface modified with an acetone solution of N-bromosuccinimide at reflux temperature. The results of XPS show that the content of Br atoms in the surface layer increases with the increase of bromination time, broadens the spectrum of C_ (IS) and produces new spectra from C-O and C-Br structures. Infrared spectroscopy proved bromination reaction to produce CH 2 Br structure. Bromination changed the gas permeability of the membrane accordingly, that is, the value of α_ (O_2 / N_2) increased and the value of P_ (O_2) decreased.