纳米复合材料
材料科学
结晶度
聚氨酯
原位聚合
纳米颗粒
聚合
傅里叶变换红外光谱
化学工程
石墨烯
石墨烯量子点
复合材料
聚合物
纳米技术
工程类
作者
Sanaz Sarabiyan Nejad,Mostafa Rezaei,Massoumeh Bagheri
标识
DOI:10.1080/25740881.2019.1647243
摘要
A series of polyurethane-based nanocomposites with different contents of N-GQD nanoparticles were prepared via solution casting and in-situ polymerization methods. Hydrogen bonding content of carbonyl groups (HBI(C=O)) of samples were studied by FTIR. Crystalline structure and thermal behavior of samples were investigated by XRD and DSC. Incorporating of N-GQDs in PU matrix can affect the HBI(C=O) and degree of crystallinity. The FESEM images illustrate N-GQD nanoparticles have uniform dispersion in samples obtained by in-situ polymerization. Shape memory behavior was examined at room temperature and 60°C. Both PU nanocomposites preparation methods and nanoparticles content have significant effect on thermo-mechanical properties.
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