Synthesis and characterization of cellulose-g-polyoxyethylene (2) hexadecyl ether solid–solid phase change materials

Springer Science and Business Media LLC - Tập 23 - Trang 1663-1674 - 2016
Na Han1,2, Zhinan Li1, Xingxiang Zhang1, Wanyong Yu1,2, Xiaoying Chen1, Dong Wang1, Junbao Li2
1State Key Laboratory of Separation Membrane and Membrane Process, Tianjin Municipal Key Lab of Fiber Modification and Functional Fiber, School of Materials Science and Engineering, Tianjin Polytechnic University, Tianjin, China
2CHTC Helon Co. Ltd, Weifang, China

Tóm tắt

A series of novel solid–solid phase change materials, namely, cellulose-g-polyoxyethylene (2) hexadecyl ether (Cellulose-g-E2C16) copolymers, were synthesized using toluene 2,4-diisocyanate (TDI) as a coupling reagent in the ionic liquid 1-allyl-3-methylimidazolium chloride (AmimCl). The optimum prepolymerization conditions were determined to be 25 °C and 75 min without catalyst, and the optimum reaction conditions of the grafting step were 90 °C, 6 h and 0.1 wt% dibutyltin dilaurate (DBTDL, weight percent of TDI). The successful grafting was confirmed by FTIR and 1H-NMR. The properties of the Cellulose-g-E2C16 copolymers were investigated by DSC, TG and XRD. It is shown that the heat storage ability and phase change temperature of Cellulose-g-E2C16 copolymers depended on the degree of substitution. The crystalline type of the grafted E2C16 was not affected by the cellulosic backbone. Compared with E2C16, Cellulose-g-E2C16 copolymers showed better thermal stability. They are expected to be widely applied in the area of thermal energy storage.

Tài liệu tham khảo

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