气泡对聚苯胺纳米结构形貌的影响及其形成机理研究

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• 英文论文题名：The effect of bubble on polyaniline nanostructures and study of their formation mechanism
• 论文作者：陈勇 ; 谭晓明 ; 马会茹 ; 孙志刚 ; 官建国 ; 谢洪泉
• 英文论文作者：CHEN YONG ; TAN XIAOMING ; MA HUIRU ; SUN ZHIGANG ; GUAN JIANGUO ; XIE HONGQUAN ; College of Chemical Engineering and Pharmacy ; Jingchu University of Technology ; Wuhan University of Technology ; State Key Lab Advanced Technology for Material Synthesis and Processing ; Huazhong University of Science and Technology ; Department of Chemistry
• 年：2016
• 作者机构：荆楚理工学院化工与药学院;武汉理工大学材料复合新技术国家重点实验室;华中科技大学化学系;
• 论文关键词：碳酸盐 ; 聚苯胺 ; 气泡 ; 纳米结构 ; 反应机理
• 英文论文关键词：carbonate ; polyaniline ; nanotubes ; nanoslices ; SDS ; mechanism
• 会议召开时间：2016-09-23
• 会议录名称：中部四省化学化工学会2016年学术年会摘要集
• 语种：中文
• 分类号：O633.21;TB383.1
• 学会代码：JXHX
• 会议名称：中部四省化学化工学会2016年学术年会
• 会议地点：中国江西南昌
• 主办单位：中国化学会湖北代表处
• 学会名称：江西省化学化工学会
• 页数：1
• 文件大小：113k
• 原文格式：D
• 会议级别：地方

摘要

在十二烷基硫酸钠(SDS)存在下,以过硫酸铵为氧化剂,借助碳酸盐与苯胺聚合过程中产生的硫酸反应并原位生成气泡,制备了具有不同形貌的纳米聚苯胺。研究了碳酸盐的种类、用量、体系pH值等对产物形貌的影响。结果表明:随着气泡量的增加,聚苯胺纳米结构发生了从表面布满小棒的纳米管,光滑的纳米管到纳米片的转变。反应过程中少量气泡在胶束表面形成保护层以及大量气泡使管状胶束无法稳定存在,使得聚苯胺纳米形貌发生改变,但对聚苯胺的结晶性和分子结构没有影响。我们从三个方面阐述气泡对聚苯胺形貌的影响:改变碳酸盐用量制备的纳米聚苯胺的形貌,改变体系的pH和不放出气体的弱酸盐制备的纳米聚苯胺的形貌说明气泡在苯胺聚合过程中对聚苯胺纳米形貌有重要的影响,并初步阐明了聚苯胺纳米结构的形成机理。
Using chemical oxidation in the presence of soft template of sodium dodecyl sulfonate(SDS) and with addition of carbonates,which reacted with sulphuric acid that produced by in-situ polymerization process,using ammonium persulfate as an oxidant,nano-polyaniline with different morphologies were synthesized.The affects of kind and dosage of carbonates,as well as p H of the system on the morphology of the product were investigated.The results showed that,with the amount of bubble increased,nano-polyanline was transformed from the nanotubes with nano-rods on the surface,to the nanotubes with smooth surface,and finally to nanoslices.Little bubbles played the role of protecting the tubular and great bubble played the role of changing the tubular micelle in the reaction process,resulting in the change of morphology of nano-polyaniline.However,the crystallinity of polyaniline and molecular structure remained the same.We explained that the effects of bubble on the morphology of polyaniline from three aspects:The morphology of nano-polyaniline was affected greatly by changing the kin and amount of sodium carbonate added,but affected a little by changing the p H of the system or addition of other salt which can't produce bubble in the polyaniline.All these demonstrated that bubble formed during the polymerization process has an important influence on the formation of polyaniline nanotubes.The formation mechanism of nano-structured polyaniline was also clarified.

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