Preparation and Characterization of PVDF/RGO Nanocomposites

• Main Authors: Chien Min Liou, 劉建旻
• Other Authors: F. C. Chiu
• Format: Others
• Published: 2012
• Online Access: http://ndltd.ncl.edu.tw/handle/13541952936329909583

碩士 === 長庚大學 === 化工與材料工程學系 === 100 === In this study, poly(vinylidene fluoride) (PVDF)/RGO nanocomposites were prepared by solution precipitation method. The RGO (reduced graphene oxide) was prepared from commercial graphite via chemical oxidation and reduction processes. Spectroscopy and microscopy results confirmed the successful preparation of RGO (with a trivial amount of oxygen-containing functional groups). SEM and TEM results showed well dispersed RGO within PVDF matrix at low RGO loadings, but some aggregates of RGO exhibited at high RGO loadings. PLM results indicated that RGO acted as a nucleating agent for PVDF and accelerated the overall crystallization process of PVDF. XRD results showed that PVDF exhibited predominantly α-form crystals with or without the incorporation of RGO. DSC results indicated that the presence of RGO accelerated the crystallization of PVDF, and changed the recrystallization phenomenon of PVDF during the heating process. TGA results demonstrated the enhanced thermal stability for PVDF after the formation of nanocomposites. DMA results showed that the storage modulus (E’) of PVDF increased with the incorporation of RGO.