Recyclable and Mechanically Robust Palm Oil-Derived Epoxy Resins with Reconfigurable Shape-Memory Properties

编号 020025301

推送时间 20200824

研究领域 林产化工 

年份 2020 

类型 期刊 

语种 英语

标题 Recyclable and Mechanically Robust Palm Oil-Derived Epoxy Resins with Reconfigurable Shape-Memory Properties

来源期刊 ACS SUSTAINABLE CHEMISTRY & ENGINEERING

期 第253期

发表时间 20200319

关键词 Epoxy resin;  Palm oil;  Shape memory;  Thermoset polymeric materials;  Recyclable; 

摘要 The development of sustainable epoxy resins from renewable biomass is gaining more and more attention. In most cases, chemically cross-linked biomass-derived epoxy resins are nonrecyclable. Here, mechanically strong and recyclable epoxy resins from palm oil that possess reconfigurable shape memory properties are developed. By converting palm oil-based methyl methacrylate monomers into epoxy monomers, high molecular weight palm oil-based epoxy polymers (EP) are prepared with high conversion. After being cured with citric acid (CA) without using any catalyst, palm oil-based epoxy resins (EP-CA) cross-linked with beta-hydroxyl ester groups are obtained. The EP-CA can rearrange the chemical network topology through transesterification reactions, which endows the materials with the ability to be recycled and reshaped. The EP-CA prepared via the epoxy polymer approach contains a well-defined network structure, resulting in remarkable mechanical properties. Moreover, the dynamic network structure allows the EP-CA samples to possess reconfigurable shape memory properties.

服务人员 尚玮姣

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