Toughening benzoxazines with hyperbranched polymeric ionic liquids: Effect of cations and anions

作者: Junheng Zhang , Shiyuan Chen , Qianjun He , Peng Guo , Zejun Xu

DOI: 10.1016/J.REACTFUNCTPOLYM.2018.10.002

关键词:

摘要: Abstract In the present work, we developed a type of novel hyperbranched polymeric ionic liquid (HBPIL) that was derived from 1-allyl-3-methylimidazolium (AMIM), 1-allyl-3-methylpyridinium (AMPy), or 1-allyl-1-methylpiperidinium (AMPIP) cation with different anions, tetrafluoroborate (BF4), bis (trifluoromethylsulfonyl) amide (NTF2), and hexafluorophosphate (PF6), to elucidate role cations anions on reactivity mechanical properties. The blending HBPILs bisphenol-F-based benzoxazines decreased temperature required for opening rings improved performances thermal behaviors formed polybenzoxazoles. Moreover, differential scanning calorimetry, TGA, Fourier transform infrared data exhibited following differences: (i) curing process correlated structural differences onset lower HBPIL PF6 anion in comparison those NTF2 BF4 anions; (ii) had significant influence benzoxazines, highest catalytic activity observed containing AMIM, compared (AMPy) (AMPIP). Furthermore, higher suggested crosslink density cured resin, which enabled glass transition shift value enhanced strength stability obtained

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