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Investigation of polyaniline processibility using GPC/UV-vis analysis

机译:使用GPC / UV-vis分析研究聚苯胺的可加工性

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摘要

In this work, we characterized the molecular weight and UV-vis spectra of polyaniline (PANI) simulta-neously using a gel permeation chromatography (GPC) system equipped with a photodiode array (PDA) detector. Therefore, we constructed correlations between weight average molecular weight (M_W) values and UV-vis spectral features such as the ratio of quinoid units/benzenoid units (Q/B ratio), and the B peak positions for the continuum of discrete chromatographic fractions of PANI emeraldine base (EB). The correlation is further verified by electrochemical techniques. Using this correlation, we analyzed newly synthesized PANIs and investigated how the synthesis and post-treatment conditions impact the quality, uniformity, and processibility of the PANIs. The study also reveals that the portions with low molecular weights of PANI are more sensitive to the process conditions than those with high molecular weights.
机译:在这项工作中,我们使用配备有光电二极管阵列(PDA)检测器的凝胶渗透色谱(GPC)系统同时表征了聚苯胺(PANI)的分子量和UV-vis光谱。因此,我们构建了重均分子量(M_W)值与UV-vis光谱特征(例如,喹啉单位/苯甲酮单位的比率(Q / B比率)以及B的连续色谱级分的B峰位置)之间的相关性。 PANI翡翠碱(EB)。通过电化学技术进一步验证了相关性。利用这种相关性,我们分析了新合成的PANI,并研究了合成条件和后处理条件如何影响PANI的质量,均匀性和可加工性。研究还显示,低分子量PANI的部分比高分子量的部分对工艺条件更敏感。

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