High-performance gum rosin-modified hyperbranched vinyl ester resin derived from multifunctional pentaerythritol

编号 020028504

推送时间 20210405

研究领域 林产化工 

年份 2021 

类型 期刊 

语种 英语

标题 High-performance gum rosin-modified hyperbranched vinyl ester resin derived from multifunctional pentaerythritol

来源期刊 Polymer Bulletin

期 第285期

发表时间 20210102

关键词 Rosin;  Vinyl ester;  Thermal stability;  Chemical resistance;  Bio-based; 

摘要 In this article, gum rosin-based hyperbranched vinyl ester resin (VPEMPAE) was synthesized from maleic anhydride-modified gum rosin adduct (MPA). This adduct (MPA) was reacted with pentaerythritol to obtain esterified adduct (PEMPA). The PEMPA adduct was epoxidized using epichlorohydrin and KOH as a catalyst to give epoxy resin (PEMPAE). The epoxide rings were then reacted with methacrylic acid to synthesize vinyl ester resin (VPEMPAE). The lignin modeled compounds (LMCs), methacrylated eugenol (ME), and methacrylated guaiacol (MG) were used as bio-based reactive monomers for vinyl ester resin. The chemical structures of all the products were studied using FT-IR, 1H-NMR, 13C-NMR, and DEPT-135° spectroscopic analysis. The dynamic curing study of cured samples was done using DSC. Thermogravimetric analysis of these samples was performed using TGA at a heating rate of 10 °C min?1. Mechanical properties such as compression, flexural, and tensile strengths of VPEMPAE samples were also determined using a universal testing machine. Some preliminary coating tests were also performed to determine the chemical resistance of these cured resins and morphological studies on these coatings were also conducted using SEM. The results of this study showed better performance of rosin-derived vinyl ester resin cured with reactive diluent ME as compared to MG and commercially based styrene.

服务人员 尚玮姣

服务院士 宋湛谦

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