摘要
以盐酸为掺杂剂,采用无模板化学氧化聚合法,制备了高聚合回收产率(90%)的微/纳米结构导电聚苯胺。通过场发射扣描电子显微镜、透射电子显微镜、傅里叶变换红外光谱、紫外-可见光谱和四探针技术对聚苯胺的形貌、结构和性能进行了表征。实验结果表明,苯胺在1.0 mol/L盐酸水溶液中0℃反应24 h(无搅拌),可制得直径为30～43 nm、长度为186～600nm的聚苯胺纳米纤维;当聚合反应时间为72h时,可得到直径为43～57nm、长度为0.86～1.43μm的聚苯胺纳米纤维和外直径为1.2～2.2μm的纳米纤维自组装聚苯胺微球。盐酸掺杂微/纳米结构聚苯胺的导电性良好,室温电导率可达5.0 S/cm,且在不同溶剂中表现出明显的溶致变色性能。
Micro-/nano-structural polyanilines （PANI） with high recovered yield （ 90% ） were prepared by template-free chemical oxidative polymerization in presence of HCI as dopant. The morphologies, structures and properties of micro-/nano-structural PAN/were characterized by means of FESEM, TEM, FTIR, UV-Vis and four-probe technique. PANI nanofibers of 30 - 43 nm in diameter and 186 -600 nm in length are prepared in 1.0 mol/L HCI at 0 ~C for 24 h（ without stirring）. PANI nanofibers of 43 - 57 nm in diameter and 0.86 - 1.43μm in length, and microspheres （ 1.2 - 2.2 μm in outer diameter） are synthesized by prolonging polymerization time for 72 h in 1.0 mol/L HCI at 0℃ （without stirring ）. PANI microspheres are constructed from theft own nano-fibers by selfassembling. The obtained HCl-doped micro-/nano - structural PANI is good in room-temperature electroconductivitv of 5.0 S/cm and attractive in solvatochromism in various solvents.
出处
《石油化工》
EI
CAS
CSCD
北大核心
2008年第1期85-89,共5页
Petrochemical Technology
基金
福建省教育厅资助项目(JB06044)
福州大学校人才基金项目(XRC-0633)。
关键词
聚苯胺
盐酸
无模板化学氧化聚合
微/纳米结构
自组装
polyaniline
hydrochloric acid
template-free chemical oxidative polymerization
micro-/nano-structure
self-assembly process
