丙烯酸酯
自由基聚合
烷基
高分子化学
同种类的
纤维素
聚合
丙烯酸酯聚合物
相(物质)
材料科学
化学
有机化学
聚合物
共聚物
热力学
物理
作者
Yongqiang Qian,Ning Han,Yi-wen Bo,Ning Han,Longfei Zhang,Xingxiang Zhang
标识
DOI:10.1016/j.carbpol.2018.03.057
摘要
A novel solid-solid phase change materials, namely, cellulose acrylate-g-poly (n-alkyl acrylate) (CA-g-PAn) (n = 14, 16 and 18) were successfully synthesized by free radical polymerization in N, N-dimethylacetamide (DMAc). The successful grafting was confirmed by fourier transform infrared spectra (FT-IR) and nuclear magnetic resonance (NMR). The properties of the CA-g-PAn copolymers were investigated by differential scanning calorimetry (DSC), thermogravimetric analysis (TGA). The phase change temperatures and the melting enthalpies of CA-g-PAn copolymers are in the range of 10.1-53.2 °C and 15-95 J/g, respectively. It can be adjusted by the contents of poly (n-alkyl acrylate) and the length of alkyl side-chain. The thermal resistant temperatures of CA-g-PA14, 16 and 18 copolymers are 308 °C, 292 °C and 273 °C, respectively. It show that all of grafting materials exhibit good thermal stability and shape stability. Therefore, it is expected to be applied in the cellulose-based thermos-regulating field.
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