Periyasamy Thirukumaran, Asrafali Shakila Parveen, Kim Seong-Cheol
School of Chemical Engineering, Yeungnam University, Gyeongsan 38541, Republic of Korea.
Polymers (Basel). 2023 Feb 8;15(4):849. doi: 10.3390/polym15040849.
Despite the fact that amino cellulose (AC) is biodegradable, biocompatible, and has excellent film-forming properties, AC films have poor mechanical properties and are not thermally stable. An AC-based composite film prepared from AC and curcumin-stearylamine based benzoxazine (C-st) is reported in order to improve its performance and promote its application. As starting materials, C-st and AC were used to produce a C-st/AC composite film possessing a synergistic property through chemical cross-linking and hydrogen bonds. Two salient features with respect to the curing behavior were obtained. Firstly, the onset of curing was reduced to 163 °C when the benzoxazine monomer was synthesized from fully bio-based precursors (such as curcumin and stearylamine). Secondly, a synergistic effect in curing behavior was obtained by mixing C-st with AC. As a result of tensile tests and thermal analysis, the poly(C-st) benefited the composite films with pronounced mechanical and thermal properties, even at elevated temperatures. There was a 2.5-fold increase in tensile strength compared to the AC film, indicating that the composite films have the potential to be used for functional purposes. These poly(C-st)/AC films with improved mechanical and thermal properties have the ability to replace naturally occurring polymer films in film-related applications.
尽管氨基纤维素（AC）具有生物可降解性、生物相容性且具有优异的成膜性能，但AC膜的机械性能较差且热稳定性不佳。为了改善其性能并促进其应用，报道了一种由AC和基于姜黄素 - 硬脂胺的苯并恶嗪（C-st）制备的AC基复合膜。以C-st和AC作为起始原料，通过化学交联和氢键作用制备出具有协同性能的C-st/AC复合膜。获得了关于固化行为的两个显著特征。首先，当苯并恶嗪单体由完全基于生物的前体（如姜黄素和硬脂胺）合成时，固化起始温度降至163°C。其次，通过将C-st与AC混合，在固化行为中获得了协同效应。拉伸试验和热分析结果表明，聚（C-st）使复合膜具有显著的机械和热性能，即使在高温下也是如此。与AC膜相比，拉伸强度提高了2.5倍，这表明复合膜具有用于功能用途的潜力。这些具有改善的机械和热性能的聚（C-st）/AC膜有能力在与膜相关的应用中替代天然存在的聚合物膜。
