Synthesis, Curing, and Properties of an Epoxy Resin Derived from Gallic Acid

被引：25
作者：
Tarzia, Antonella [1 ]
Montanaro, Jeanette [1 ]
Casiello, Michele [2 ,3 ]
Annese, Cosimo [2 ,3 ]
Nacci, Angelo [2 ,3 ]
Maffezzoli, Alfonso [4 ]
机构：
[1] Consorzio CETMA, Mat & Struct Engn Dept, Brindisi, Italy
[2] Univ Bari Aldo Moro, I-70126 Bari, Italy
[3] CNR ICCOM, Dept Chem, Via Orabona 4, I-70126 Bari, Italy
[4] Univ Salento, Dept Engn Innovat, Via Monteroni, I-73100 Lecce, Italy
来源：
BIORESOURCES | 2018年 / 13卷 / 01期
关键词：
Gallic acid; Epoxy resin; Curing; Thermal analysis; Mechanical properties; Bio-based polymer; BISPHENOL-A; KINETICS; SYSTEMS; RISK;
D O I：
10.15376/biores.13.1.632-645
中图分类号：
TB3 [工程材料学]; TS [轻工业、手工业、生活服务业];
学科分类号：
0805 ; 080502 ; 0822 ;
摘要：
An aromatic epoxy monomer, formed by glycidylation of gallic acid, was crosslinked by adopting different curing agents to obtain bio-based, crosslinked resins with suitable engineering properties. Specifically, tri- and tetra-glycidyl ether of gallic acid (GEGA) were obtained using a two-step synthesis. These bio-based monomers were cured in the following three epoxy formulations: a stiff cycloaliphatic primary amine, isophorone diamine, and a flexible polypropylene oxide amine (Jeffamine D-230). Next, the homopolymerization of GEGA was studied using an ionic initiator, N, N-dimethylbenzylamine, and a complex curing mechanism highlighted by calorimetric and mass spectra analysis. Calorimetric and rheological measurements were used to compare the curing behavior of the studied GEGA-based formulations. Mechanical properties of the gallic acid-based epoxy resins were comparable with those of standard epoxy resin formulations, based on di-glycidyl ether of bisphenol A. Thermogravimetric analysis of cured samples showed a relevant char content at high temperatures.
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页码：632 / 645
页数：14
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