Author/Authors :
Zhang، نويسنده , , Zhihao and Shi، نويسنده , , Zhi-Qiang and Peng، نويسنده , , Juan and Song، نويسنده , , Jianbin and Chen، نويسنده , , Qingyong and Yang، نويسنده , , Junliang and Gong، نويسنده , , Yumei and Ji، نويسنده , , Ronghua and He، نويسنده , , Xiaofeng and Lee، نويسنده , , Joong-Hee، نويسنده ,
Abstract :
Maleated poly(propylene carbonate) (PPC-MA)/organo-montmorillonite (OMMT) nanocomposites were first prepared via melt end-capping poly(propylene carbonate) (PPC) with maleic anhydride (MA) and melt-mixing the PPC-MA with commercial OMMT without and with hydroxyl groups in surfactants: Cloisite 20A (C20A) and Cloisite 30B (C30B), respectively. Intercalated and partially delaminated morphologies were corroborated via X-ray diffraction (XRD) and transmission electron microscopy (TEM). Dynamic mechanical analysis (DMA) revealed that PPC-MA was evidently reinforced by the partially delaminated C30B platelets. From XRD patterns of statically annealed PPC-MA/C20A and PPC-MA/C30B mixtures and Fourier transform infrared (FTIR) results of equivalent nanocomposites, partial delamination of C30B in PPC-MA was confirmed to be relevant to diffusion of PPC-MA molecular chains in C30B galleries, grafting of PPC-MA to C30B platelet surfaces and further separation of C30B platelets.
