Divanillin-Based Epoxy Precursors as DGEBA Substitutes for Biobased Epoxy Thermosets,ACS Sustainable Chemistry & Engineering

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Divanillin-Based Epoxy Precursors as DGEBA Substitutes for Biobased Epoxy Thermosets
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2018-06-28 00:00:00 , DOI: 10.1021/acssuschemeng.8b02419
Etienne Savonnet _{1,

2} , Etienne Grau , Stéphane Grelier ₁ , Brigitte Defoort ₂ , Henri Cramail ₁

Affiliation

Biobased epoxy monomers from divanillyl alcohol were successfully synthesized and characterized. These monomers, that is, diglycidylether of divanillyl alcohol (DiGEDVA), triglycidylether of divanillyl alcohol (TriGEDVA), and tetraglycidyl of divanillyl alcohol (TetraGEDVA), were then cured with cyclo-aliphatic diamine (IPDA), employed as hardener. The vanillin-based epoxy thermosets so-formed were then characterized by differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), dynamic mechanical analyzer (DMA), and tensile tests and were compared to a DGEBA-based reference. These biobased thermosets display phase transition Tα from 140 to 200 °C and have thermal degradation comparable to the DGEBA-based network. This divanillin platform thus appears to be a promising substitute to bisphenol A with the aim at designing high-performance epoxy thermosets for structural composite and adhesive applications.

中文翻译：

基于Daniillin的环氧树脂前体作为DGEBA替代生物基环氧树脂热固性材料

成功地合成和表征了以二香草醇为原料的生物基环氧单体。然后，将这些单体，即二香草醇的二缩水甘油醚（DiGEDVA），二香草醇的三缩水甘油醚（TriGEDVA）和二香草醇的四缩水甘油基（TetraGEDVA），用用作固化剂的脂环族二胺（IPDA）进行固化。然后，通过差示扫描量热法（DSC），热重分析（TGA），动态力学分析仪（DMA）和拉伸试验对由此形成的基于香兰素的环氧热固性塑料进行表征，并与基于DGEBA的参比物进行比较。这些基于生物的热固性材料显示出从140°C到200°C的相变Tα，并且具有与基于DGEBA的网络可比的热降解性能。

更新日期：2018-06-28

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