聚合参数对聚苯胺功能化棉织物电导率的影响

IF 0.3 Q4 MULTIDISCIPLINARY SCIENCES
Tesfamariam TEKLU
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引用次数: 0

摘要

在酸性介质中用水合氯化铁溶液对苯胺进行原位氧化聚合,合成了聚苯胺功能化棉织物。电导率的变化考察了聚合变量,如苯胺的量,氧化剂,反应介质和时间。利用红外光谱(FT-IR)、热重分析仪(TGA)和扫描电子显微镜(SEM)研究了聚苯胺功能化对最佳聚合条件下棉织物结构特征的影响。在1440 cm-1和1560 cm-1处的FT-IR曲线证明了棉花结构中存在苯甲酸和醌类环,这证实了聚苯胺以导电形式——祖母绿盐的引入。热学研究表明,聚苯胺的存在进一步提高了棉织物的热稳定性。SEM微观结构也证明了由于聚苯胺的包裹,形成了含有大量碎屑、芽和通道的不均匀表面。聚苯胺功能化通过将绝缘棉转变为半导体,显示出电导率的显著提高。在最佳聚合变量([苯胺]= 1 M,[氧化剂]= 1 M,[酸]= 0.5 M,时间= 24小时)下,最大电导率为7.63 X 10-3 S/cm,相当于半导体材料的电导率。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Effect of Polymerization Variables on the Electrical Conductivity of Polyaniline Functionalized Cotton Textiles
Polyaniline functionalized cotton textiles were synthesized via in situ oxidative polymerization of aniline using hydrated ferric chloride solution in acidic media. Variation in conductivity was examined against polymerization variables such as amount of aniline, oxidant, reaction media, and time. Effects of polyaniline functionalization on the structural features of cotton textiles at optimum polymerization conditions were screened by FT-IR, TGA, and SEM instruments. FT-IR profiles at 1440 cm-1 and 1560 cm-1 proved the existence of benzoid and quinoid rings within the cotton structure, which confirmed the introduction of polyaniline in its conductive form, emeraldine salt. Thermal studies revealed the existence of polyaniline, which further enhanced the thermal stability of cotton textiles. SEM microstructure also proved the formation of nonuniform surfaces with a considerable amount of debris, buds, and channels due to the inclusion of polyaniline. Polyaniline functionalization has shown substantial enhancement of electrical conductivity by changing insulating cotton to semiconductor. At optimum polymerization variables ([aniline] = 1 M, [oxidant] = 1 M, [acid] = 0.5 M, and time = 24 hrs), maximum conductivity was registered at 7.63 X 10-3 S/cm, which is equivalent to the conductivity of semiconductor materials.
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来源期刊
Momona Ethiopian Journal of Science
Momona Ethiopian Journal of Science MULTIDISCIPLINARY SCIENCES-
自引率
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发文量
13
审稿时长
12 weeks
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