摘要
采用直接混合氧化法分别制备了丙二酸、丁二酸、苹果酸和酒石酸掺杂的聚苯胺纳米纤维,利用扫描电镜、红外光谱仪和紫外光谱仪对聚苯胺的形貌及结构进行了表征,采用四探针测试仪测定了聚苯胺的电导率,并研究了多元羧酸分子结构对聚苯胺形貌、结构及性能的影响。结果表明:随着多元羧酸分子链长度增加,得到的聚苯胺纳米纤维的直径、长度均有所增加,溶解性得到提升,而电导率降低;当多元羧酸分子存在侧链羟基时,得到的聚苯胺纳米纤维的形貌及长度有显著改善,电导率明显提高,溶解性则略有下降。
Polyaniline nanofibers were prepared by direct mix oxidation in propandioic acid, succinic acid, malic acid and tartaric acid system respectively. The morphology and structure of polyaniline were characterized by scanning electron microscopy, FT-IR spectrometer and UV-Vis spectrometer, the conductivity of potyaniline powders was eva- luated by four-point probe tester, and the impact of molecular structure of polycarboxylic acid on the morphology, structure and properties of polyaniline were researched. The results show that the diameter and the length of polyani- line nanofibers were improved with the increase of the length of molecule chain of polycarboxylic acid, and the solubili- ty was also enhanced, hut the conductivity was reduced. The length of polyaniline nanofibers had a substantial im- provement owing to the function of hydroxyl groups at side chain in the molecular structure of polycarboxylic acid, the conductivity was also increased, whereas the solubility of polyaniline had a decline.
出处
《材料导报》
EI
CAS
CSCD
北大核心
2013年第24期79-81,共3页
Materials Reports
基金
国家自然科学基金(41106070)
山东省自然科学基金(ZR2009EQ008)
关键词
聚苯胺
纳米纤维
多元羧酸
电导率
溶解性
polyaniline, nanofiber, polycarboxylic acid, conductivity, solubility
