Abstract

In the present work, curing reaction of benzoxazine was studied with the incorporation of different weight percentage of polypyrrole (PPy). Conventional benzoxazine derived from Bisphenol-F, aniline (BF-a) and bio-based benzoxazine derived from cardanol, furfurylamine (C-f) were synthesized and studied. Significant change in curing temperature (Tp) was observed with the addition of PPy to both C-f and BF-a monomers. With the incorporation of 5 wt% PPy, the Tp of C-f significantly reduced from 245 °C to 185 °C and similarly for BF-a monomer from 226 °C to 165 °C. The plausible mechanism of the benzoxazine ring opening reaction in presence of PPy is also discussed. Further, scanning electron microscopy (SEM) and X-ray diffraction studies suggest that the incorporation of PPy leads to the formation of fractal morphology. Consequently, the PPy inter-layered poly(C-f) and poly(BF-a) matrices contribute to the achievement of low value of dielectric constant (K = 3.39 and 3.83). In addition, PPy interlayer provokes enhanced thermal stability and higher LOI value. Thus, the present work demonstrates the catalytic role of PPy towards the curing reaction of benzoxazines and its contribution towards thermal and dielectric behaviour the of resulted matrices.

中文翻译：

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具有增强的热和介电性能的聚吡咯层间低温固化苯并恶嗪基质

摘要

在目前的工作中，通过掺入不同重量百分比的聚吡咯（PPy）来研究苯并恶嗪的固化反应。合成并研究了双酚-F，苯胺（BF-a）衍生的常规苯并恶嗪和腰果酚，糠胺（Cf）衍生的生物基苯并恶嗪。在Cf和BF-a单体中都添加PPy可以观察到固化温度（Tp）的显着变化。通过加入5 wt％的PPy，Cf的Tp从245°C显着降低到185°C，而BF-a单体的Tp也从226°C降低到165°C。还讨论了在PPy存在下苯并恶嗪开环反应的合理机理。此外，扫描电子显微镜（SEM）和X射线衍射研究表明，PPy的引入导致分形形态的形成。所以，PPy层间聚（Cf）和聚（BF-a）矩阵有助于实现低介电常数（K = 3.39和3.83）。此外，PPy夹层还可以提高热稳定性并提高LOI值。因此，本发明证明了PPy对苯并恶嗪的固化反应的催化作用及其对所得基质的热和介电行为的贡献。