Influence of reaction conditions on the formation of nanotubes/nanoparticles of polyaniline in the presence of 1-amino-2-naphthol-4-sulfonic acid and applications as electrostatic charge dissipation material
Influence of reaction conditions on the formation of nanotubes/nanoparticles of polyaniline in the presence of 1-amino-2-naphthol-4-sulfonic acid and applications as electrostatic charge dissipation material
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DOI：
10.1002/pi.2557
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发表时间：
2009-05
影响因子：
3.2
通讯作者：
H. Bhandari;Vineet Bansal;V. Choudhary;S. Dhawan
中科院分区：
文献类型：
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作者：
H. Bhandari;Vineet Bansal;V. Choudhary;S. Dhawan
背景技术背景：聚（1-氨基-2-萘酚-4-磺酸）及其与苯胺的共聚物是一类新型的导电高分子，它们具有本征质子掺杂能力，可形成高溶解性的自掺杂均聚物和共聚物。聚合物链中的游离OH和NH 2基团可与可存在于保护性涂料中的其它官能团联合收割机结合，从而可成功地用作抗静电材料。研究结果：本文报道了苯胺在1-氨基-2-萘酚-4-磺酸（ANSA）存在下，以对甲苯磺酸（PTSA）为外掺杂剂进行氧化聚合，形成聚苯胺纳米管。在ANSA共聚单体中SO 3 H基团的存在允许共聚物获得固有的质子掺杂能力。通过对共聚物和均聚物的~ 1H NMR、~（13）C NMR、傅立叶变换红外光谱和X射线光电子能谱的分析，探讨了聚合机理，揭示了OH/NH_2参与了反应机理。扫描和透射电子显微镜显示了反应路线和掺杂剂的存在如何影响聚合物的形态和尺寸。还对通过将1wt%的ANSA和苯胺的共聚物与低密度聚乙烯（LDPE）共混而制备的导电共聚物膜进行静态衰减时间测量，其显示在从5000至500 V消散电荷时的静态衰减时间为0.1至0.31 s。在不同的反应介质中合成了ANSA与苯胺的共聚物，导致共聚物纳米管和纳米颗粒的形成。1wt%的PTSA-和自掺杂的ANSA和苯胺与LDPE的共聚物的共混物可以配制成具有有效抗静电性能的膜。版权所有© 2009化学工业协会
BACKGROUND: Poly(1-amino-2-naphthol-4-sulfonic acid) and its copolymers with aniline are a new class of conducting polymers which can acquire intrinsic protonic doping ability, leading to the formation of highly soluble self-doped homopolymers and copolymers. Free OH and NH2 groups in the polymer chain can combine with other functional groups that could be present in protective paints which can thus be successfully used as antistatic materials. RESULTS: This paper reports the formation of nanotubes of polyaniline on carrying out oxidative polymerization of aniline in the presence of 1-amino-2-naphthol-4-sulfonic acid (ANSA) in p-toluenesulfonic acid (PTSA) as an external dopant. The presence of SO3H groups in the ANSA comonomer allows the copolymer to acquire intrinsic protonic doping ability. The polymerization mechanism was investigated by analysing the 1H NMR, 13C NMR, Fourier transform infrared and X-ray photoelectron spectra of the copolymers and homopolymers, which revealed the involvement of OH/NH2 in the reaction mechanism. Scanning and transmission electron microscopy showed how the reaction route and the presence of a dopant can affect the morphology and size of the polymers. Static decay time measurements were also carried out on conducting copolymer films prepared by blending of 1 wt% of copolymers of ANSA and aniline with low-density polyethylene (LDPE) which showed a static decay time of 0.1 to 0.31 s on dissipating a charge from 5000 to 500 V. CONCLUSION: Copolymers of ANSA with aniline were synthesized in different reaction media, leading to the formation of nanotubes and nanoparticles of copolymer. Blends of 1 wt% of PTSA- and self-doped copolymers of ANSA and aniline with LDPE can be formulated into films with effective antistatic properties. Copyright © 2009 Society of Chemical Industry