纳米铜粒子催化乙炔聚合产物的IR表征  

IR CHARACTERIZATION OF PRODUCTS OF ACETYLENE POLYMERIZATION OVER NANO-Cu PARTICLES

作　　者：陈克正[1] 张志琨[1] 崔作林[1] 杨大智[2] 

机构地区：[1]青岛化工学院纳米材料研究所,青岛266042 [2]大连理工大学材料工程系,大连116023

出　　处：《高分子学报》2000年第2期180-183,共4页Acta Polymerica Sinica

摘　　要：通过IR对气相法制得的纳米铜粒子催化乙炔聚合反应产物 (固、液态 )进行表征 .结果发现 ,其固态产物 (纳米纤维 )分子结构中既有CC共轭双键 ,又有饱和基团—CH3 ,—CH2 — .且暴露在空气中易氧化 ,其分子结构中存在CO及OH基团 ,同时也说明其中含共轭双键 (CHCH )基团 .液体产物为低聚物 ,其中含有相当多的饱和基团及非共轭的 CC 键 ,无羟基和羰基团存在说明不存在氧化现象 .由TEM观察发现 ,纳米铜粒子既可以位于纤维的端部 ,也可以位于纤维的中间 .It was discovered that nano-Cu particles possessed high activity in acetylene polymerization.The composite which consisted of nano-Cu and acetylene-polymer was a kind of microfiber.According to the IR analysis,the molecular structure of nanometer fiber contained both conjugate C C and saturated —CH\-2—, —CH\-3 groups.Nanometer fibers were easily oxidized in air,and there existed C O and —OH groups in the molecular structure,which was consistent with the mechanism of traditional polyacetylene oxidation.Acetylene could grow orientedly on certain crystal surface or active sites of nano-Cu particles.Nano-Cu particles could be located at both ends and the middle of fibers based on TEM observations.

关 键 词：纳米铜粒子 乙炔聚合物 IR表征 催化聚合 

分 类 号：O631[理学—高分子化学]