Thermal properties of microcrystalline cellulose-filled PET–PTT blend polymer composites
Thermal properties of microcrystalline cellulose-filled PET–PTT blend polymer composites
复制标题
微晶纤维素填充PET-PTT共混聚合物复合材料的热性能
DOI：
10.1007/s10973-010-0894-6
复制
发表时间：
2011
影响因子：
4.4
通讯作者：
Han
中科院分区：
文献类型：
--
作者：
A. Kiziltas;D. Gardner;Yousoo Han;Han
以聚对苯二甲酸乙二醇酯-聚对苯二甲酸丙二醇酯共混物为基体，加入不同含量的微晶纤维素（MCC）（0- 40wt%），采用熔融混炼、模压成型的方法制备了高分子复合材料。采用动态力学热分析（DMTA）、差示扫描量热法（DSC）和热重分析（TG）对复合材料进行了分析。DSC结果表明，MCC的加入对复合材料的玻璃化转变温度（Tg）、熔融温度（Tm）和结晶温度没有一致或显著的影响。随着MCC含量的增加，由于MCC的增强作用，动态力学性能提高。DMTA的tan δ峰值随MCC含量的增加没有显著变化。热重分析表明，随着MCC含量的增加，快速热降解的起始温度降低。随着MCC含量的增加，复合材料的热稳定性略有下降。
Polymer composite materials were prepared from poly(ethylene terephthalate)–poly(trimethylene terephthalate) blends as the matrix and different microcrystalline cellulose (MCC) filler levels (0–40 wt%) using melt compounding followed by compression molding. The composites were analyzed using dynamic mechanical thermal analysis (DMTA), differential scanning calorimetry (DSC) and thermogravimetric analysis (TG). The DSC results indicated that there is no consistent or significant influence of the MCC addition on the glass transition (Tg), melting (Tm), and crystallization temperature of the composites. With increasing MCC content, dynamic mechanical properties improved because of the reinforcing effect of the MCC. The tan δ peak values from the DMTA were not significantly changed as the MCC content increased. TG indicated that the onset temperature of rapid thermal degradation decreased with increasing MCC content. It was also found that the thermal stability of the composites slightly decreased as the MCC content increased.