Renewable resource based hyperbranched epoxy thermosetting nanocomposite with cellulose nanofiber as a sustainable material

编号 020019905

推送时间 20190812

研究领域 林产化工 

年份 2019 

类型 期刊 

语种 英语

标题 Renewable resource based hyperbranched epoxy thermosetting nanocomposite with cellulose nanofiber as a sustainable material

来源期刊 Cellulose

期 第199期

发表时间 20190423

关键词 Cellulose nanofiber;  Epoxy;  Transparency;  Biodegradability;  Sustainable material; 

摘要 Renewable resource based hyperbranched epoxy nanocomposites have been fabricated with high tensile strength, good visual transparency, high chemical resistance and biodegradability by incorporating cellulose nanofiber (CNF) at a low dose level. The chemical structures of the nanocomposites have been confirmed by the FTIR, NMR and X-ray diffraction analyses. The morphological study by TEM analysis revealed the formation of nanofibers (diameter of ~?40 nm and length of ~?10 μm) and their uniform dispersion in the polymer matrix. The cured thermosets exhibited good mechanical properties like tensile strength (32 MPa), impact resistance (18.91 kJ/m), scratch hardness (>?10 kg); excellent thermal stability (245 °C), chemical resistance and biodegradability. These results have been improved with the increase of CNF percentage in the epoxy matrix. The thermosets of the nanocomposites showed visual transparency of about 82% which is almost similar to the pristine epoxy. Hence, the visual transparency, good mechanical properties (tensile strength, impact resistance etc.), chemical resistance and biodegradability of the thermoset make it suitable to be used as a sustainable material for different potential applications.

服务人员 尚玮姣

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