Tianjin Municipal Key Laboratory of Advanced Fiber and Energy Storage Technology, School of Materials Science and Engineering, Tianjin Polytechnic University, Tianjin, 300387, China.
Tianjin Municipal Key Laboratory of Advanced Fiber and Energy Storage Technology, School of Materials Science and Engineering, Tianjin Polytechnic University, Tianjin, 300387, China.
Carbohydr Polym. 2018 Aug 1;193:129-136. doi: 10.1016/j.carbpol.2018.03.057. Epub 2018 Mar 26.
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.
一种新型的固-固相变材料，即纤维素丙烯酸酯-g-聚（正烷基丙烯酸酯）（CA-g-PAn）（n=14、16 和 18），通过自由基聚合在 N，N-二甲基乙酰胺（DMAc）中成功合成。傅里叶变换红外光谱（FT-IR）和核磁共振（NMR）证实了接枝的成功。通过差示扫描量热法（DSC）和热重分析（TGA）研究了 CA-g-PAn 共聚物的性能。CA-g-PAn 共聚物的相变温度和熔融焓分别在 10.1-53.2°C 和 15-95 J/g 的范围内，可通过聚（正烷基丙烯酸酯）的含量和烷基侧链长度进行调节。CA-g-PA14、16 和 18 共聚物的热稳定温度分别为 308°C、292°C 和 273°C，表明所有接枝材料均具有良好的热稳定性和形状稳定性。因此，有望应用于纤维素基调温领域。
