氧化钛复合聚合物的制备与表征

Hassan J. Hussein, Jassim M. Al Shawi, Mohammed Q. Mohammed
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引用次数: 0

摘要

以三氯化铁为引发剂,采用化学聚合法制备了聚吲哚和聚间氨基酚两类单体导电共聚物。采用红外光谱、x射线散射、扫描电镜(SEM)和热分析(TGA)对聚合物进行了表征。本研究包括以不同比例(1:1,1:2,2:1,1:3和3:1)的两种单体制备共聚物,研究比例对化学和物理性能的影响。在共聚物中加入占单体重量10%的纳米金属氧化物(TiO2),合成复合聚合物。红外光谱(FTIR)、扫描电镜(SEM)和电子能谱(EDX)对所制化合物进行了表征。热重分析结果表明,复合材料的热稳定性显著提高。最后,将纳米复合聚合物应用于(NH3)气体的电化学传感器。结果表明,使用共聚物(1mA:3In)(不含纳米),响应时间为7秒,恢复时间为3秒,灵敏度最佳值为24.12%。结果表明,制备的纳米复合材料在25°c的低浓度氨气条件下也具有高灵敏度,响应时间快,当纳米复合材料二氧化钛(TiO2)以1mA:3In的比例使用时,灵敏度值最高(79.14%),响应时间为3秒,恢复时间为3秒。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Preparation and characterization of Titanium oxide-composite polymers
Two types of monomers polyindole and poly m-aminophenol were used to prepare conducting copolymer with use FeCl3 as an initiator by using chemical polymerization. The prepared polymers were characterized using infrared spectroscopy, X-ray scattering, scanning electron microscope (SEM) and thermal analysis TGA. This study was included preparation of copolymers from both monomers in various ratios (1:1, 1:2, 2:1, 1:3, and 3:1) to study the effect of ratios on chemical and physical properties. Moreover, nano-metal oxide (TiO2) (10%) of the weight of the monomers was added to copolymers to synthesis composite polymers. Results of FTIR, SEM and EDX were proved the prepared compounds. TGA findings were showed that composites have remarkably increased of thermal stability. Finally, nano-composite polymers have applied as electrochemical sensor for (NH3) gas. Further, results display that the best sensitivity value is (24.12%) by using copolymer (1mA:3In) (without nano) with response time (7 seconds) and recovery time (3 seconds). Furthermore, results show that prepared nanocomposites have highly sensitive features with fast responses time even within a low concentration of ammonia gas at 25° C. The highest sensitivity value (79.14%), response time (3 seconds) and recovery time (3 seconds) was recorded when used nanocomposite titanium oxide (TiO2) at the ratio (1mA:3In).
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