The present work reports the effect of cellulose nanofibers (CNFs) on the thermal, dynamic mechanical analysis (DMA), density and water uptake of thermoplastic starch (TPS) foamed composites. The obtained thermal and DMA results illustrate that thermal stability, storage modulus (E′), loss modulus (E″) and damping factor (tan δ) increase for all TPS/CNF samples compared to the pure TPS foamed composite. The results showed that the incorporation of CNFs caused an increase in the glass transition temperature (T_g) of the TPS foamed composites. Additionally, thermal results revealed that 1.5 wt% CNF offers superior resistance or stability towards heat compared to its counterparts. Addition of the CNF filler into the TPS matrix decreased the apparent density and water absorption. Interestingly, SEM images illustrate that when a small content of rigid nano particles (1.0 or 1.5 wt%) was added in the foamed composites, the cell size decreased while the cell density increased.

本工作报告了纤维素纳米纤维（CNFs）对热塑性淀粉（TPS）发泡复合材料的热力学，动态力学分析（DMA），密度和吸水率的影响。将所得到的热和DMA结果表明，热稳定性，储能模量（E' ），损耗模量（E“ ）和阻尼因子（黄褐色δ）的增加为相比于纯TPS所有TPS / CNF样品的发泡状复合材料。结果表明，CNF的引入导致玻璃化转变温度（T _g）的TPS泡沫复合材料。此外，热结果表明，与同类产品相比，1.5 wt％的CNF具有更好的耐热性或稳定性。将CNF填料添加到TPS基质中会降低表观密度和吸水率。有趣的是，SEM图像表明，当在泡沫复合材料中添加少量硬质纳米颗粒（1.0或1.5 wt％）时，泡孔尺寸减小而泡孔密度增加。