当前位置: X-MOL 学术Macromol. Res. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Improving the Thermal Stability of Polybenzoxazines Through Incorporation of Eugenol-Based Benzoxazine
Macromolecular Research ( IF 2.4 ) Pub Date : 2019-12-02 , DOI: 10.1007/s13233-020-8055-7
Yongfei Zhu , Junming Su , Runsheng Lin , Peilin Li

To introduce the para-position of phenol or aniline moiety into the cross-linked network of polybenzoxazine and improve its thermal stability, benzoxazine based on eugenol and 4,4’-diaminodiphenylmethane (e-ddm) was copolymerized with bisphenol A-aniline-based benzoxazine (b-a) or phenol-aniline-based benzoxazine (p-a). The differential scanning calorimetry and Fourier transform infrared spectroscopy (FTIR) results show that the carbenium ion intermediate from e-ddm could react with the para-position of phenol or aniline in b-a and p-a during the ring-opening polymerization process, resulting in that the aniline and phenol moieties were introduced into cross-linked structures of polybenzoxazines. The thermogravimetric analysis (TGA) and TGA interfaced with FTIR results indicate that the thermal stability of polybenzoxazines increased with the incorporation of e-ddm, due to that the volatilization of phenol, aniline and their derivatives was restrained during the thermal degradation processes. Thereby, introducing e-ddm into benzoxazine is a better method of increasing the thermal stability of polybenzoxazine.


中文翻译:

通过引入丁香酚基苯并恶嗪提高聚苯并恶嗪的热稳定性

为了将苯酚或苯胺部分的对位引入到聚苯并恶嗪的交联网络中并提高其热稳定性,将基于丁香酚和4,4'-二氨基二苯甲烷(e-ddm)的苯并恶嗪与双酚A-苯胺基共聚苯并恶嗪(ba)或苯酚-苯胺基苯并恶嗪(pa)。差示扫描量热法和傅里叶变换红外光谱(FTIR)结果表明,在开环聚合过程中,来自e-ddm的碳正离子离子中间体可与ba和pa中苯酚或苯胺的对位反应,导致将苯胺和苯酚部分引入到聚苯并恶嗪的交联结构中。热重分析(TGA)和TGA与FTIR结果表明,聚苯并恶嗪的热稳定性随着e-ddm的加入而增加,这是因为在热降解过程中苯酚,苯胺及其衍生物的挥发受到抑制。因此,将e-ddm引入苯并恶嗪是提高聚苯并恶嗪热稳定性的更好方法。
更新日期:2019-12-02
down
wechat
bug