Amino Silane-Enhanced Biobased Isovanillin Epoxy Matrices with Excellent Thermal and Mechanical Performance,ACS Applied Polymer Materials

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Amino Silane-Enhanced Biobased Isovanillin Epoxy Matrices with Excellent Thermal and Mechanical Performance
ACS Applied Polymer Materials ( IF 4.4 ) Pub Date : 2023-11-29 , DOI: 10.1021/acsapm.3c01838
Rui Yang ₁ , Zhiyong Li ₁ , Hao Guan ₁ , Xinyi Gao ₁ , Lei Shen ₂ , Jingjing Meng ₁ , Kai Guo ₁

Affiliation

To establish sustainable and functional thermosetting resin, a isovanillin-derived oxiran-2-ylmethyl 4-methoxy-3-(oxiran-2-ylmethoxy) benzoate (OYMB) was initially synthesized and cured by aliphatic amino silane N-[3-(trimethoxysilyl) propyl] ethylenediamine (NED) and N-[3-(trimethoxysilyl)propyl]-N′-(2-aminoethyl) ethylenediamine (NNED), respectively. The resins were successively investigated in terms of thermal and mechanical properties and so forth. Results indicated that the combination of the OYMB with NED or NNED endowed networks with excellent thermal properties (T_d5 > 300 °C, and T_d30 > 400 °C) and high char residues (R₇₀₀, up to 55.1%), as well as significantly enhanced impact strength (up to 25.74 KJ/m²). Furthermore, compared with the diglycidyl ether of bisphenol A (DGEBA) analogues, the OYMB-derived networks also showed low flammable properties, wherein no soot deposits occurred during the combustion. Interestingly, no dripping occurred for both NED and NNED-cured networks. In addition, the highly improved impact strength of such networks will allow the reinforcement of composites in mechanics. It offers a useful reference to dealing with the melt dripping issue in other polymers. Notably, it was also proved that the resins possessed harmful light blocking property in UV bands and blue light range in the optical performance. Therefore, those properties will further promote their applications in composite materials and advanced materials.

中文翻译：

氨基硅烷增强的生物基异香兰素环氧基质具有优异的热性能和机械性能

为了建立可持续的功能性热固性树脂，首先合成了异香草醛衍生的环氧乙烷-2-基甲基4-甲氧基-3-(环氧乙烷-2-基甲氧基)苯甲酸酯(OYMB)，并通过脂肪族氨基硅烷N-[3-(三甲氧基甲硅烷基)固化。分别是N- [3-(三甲氧基甲硅烷基)丙基]-N ' - (2-氨基乙基)乙二胺(NNED)。相继对树脂的热性能和机械性能等进行了研究。结果表明，OYMB 与 NED 或 NNED 的组合赋予网络优异的热性能（T _d5 > 300 °C，T _d30 > 400 °C）和高残炭量（R ₇₀₀，高达 55.1%）。冲击强度显着提高（高达 25.74 KJ/m ²）。此外，与双酚A二缩水甘油醚（DGEBA）类似物相比，OYMB衍生的网络还表现出较低的可燃性，其中在燃烧过程中不会产生烟灰沉积物。有趣的是，NED 和 NNED 固化网络都没有发生滴落现象。此外，这种网络的冲击强度的大幅提高将能够增强复合材料的力学性能。它为处理其他聚合物的熔体滴落问题提供了有用的参考。值得注意的是，在光学性能上还证明了该树脂在紫外波段和蓝光范围内具有有害的光阻挡性能。因此，这些性能将进一步促进其在复合材料和先进材料中的应用。

更新日期：2023-11-29

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