Preparation, characterization, and properties of CeO2/thermoplastic polyurethane nanocomposites
Preparation, characterization, and properties of CeO2/thermoplastic polyurethane nanocomposites
复制标题
DOI：
10.1177/0731684415587349
复制
发表时间：
2015-07-01
影响因子：
3.1
通讯作者：
Huang, Mao-Song
中科院分区：
文献类型：
--
作者：
Jia, Run-Ping;Wang, Cai-Feng;Huang, Mao-Song
本文采用超声波结合热塑性聚氨酯（TPU）法制备了纳米CeO 2，并通过一步原位本体聚合法将其引入到热塑性聚氨酯基体中，制备了CeO 2/热塑性聚氨酯纳米复合材料。SEM照片显示CeO 2纳米粒子（粒径约60 nm）均匀分散在热塑性聚氨酯基体中，增加了相分离程度。根据FTIR光谱中1701和1727 cm（-1）吸收面积的比值计算相分离程度值。详细讨论了CeO 2用量对热塑性聚氨酯的血液相容性、细胞活性、耐化学性、力学性能和热性能等性能的影响。此外，对纳米CeO 2与热塑性聚氨酯的相互作用机理进行了初步探讨。
In this paper, ceria (CeO2) nanoparticle was prepared through ultrasonic combined with calcine method, which was further introduced into thermoplastic polyurethane matrix via one-step in situ bulk polymerization technique, and thus CeO2/thermoplastic polyurethane nanocomposites were obtained. SEM images revealed that CeO2 nanoparticles (with size of approximate to 60nm) are uniformly dispersed into thermoplastic polyurethane matrix, which can lead to an increase of degree of phase separation. The degree of phase separation values were calculated according to the ratio of the 1701 and 1727cm(-1) absorbance areas in FTIR spectra. Effects of CeO2 amounts on thermoplastic polyurethane's properties including blood compatibility, cell viability, chemical resistance, mechanical and thermal property, and so on were discussed in detail. Additionally, possible interaction mechanism of thermoplastic polyurethane with nano CeO2 is discussed initially.