Interfacial crystallization of isotactic polypropylene molded against graphene oxide surface with various reduction levels

• Main Authors: Jian-Cheng Tsai, 蔡建誠
• Other Authors: Chi-Wen Lin
• Format: Others
• Language: zh-TW
• Published: 2015
• Online Access: http://ndltd.ncl.edu.tw/handle/33045968104354585798

碩士 === 國立雲林科技大學 === 化學工程與材料工程系 === 104 === In this study，graphene oxide were prepared various reduction levsel of reducting graphene by controlling the reductant added，according to their various reduction levels from low to high named rGO-1, rGO-2, rGO-3, rGO-4,and then the various reduction levels of rGO were transferred on different copper and and aluminum metal substrate,investigate the interface nucleation and crystallization influence of the isotactic polypropylene. Fourier transform infrared(FT-IR)and thermogravimetric Analysis(TGA) confirmed various reduction levsel of graphene oxide，and the contact angle to explore its surface free energy,and Scanning electron microscope (SEM) confirmed various reduction levsel of graphene oxide. Explore its various reduction levsel of reduction rGO transferred to different copper and aluminum metal substrateth,e interface nucleation and crystallization influence of the isotactic polypropylene ,explore different crystallization temperature(130(_^o)C、132(_^o)C、134(_^o)C、136(_^o)C) when the interface nucleation rate and growth rate,and calculate the interfacial free energy difference,when the experimental results showed that various reduction levsel of reduction rGO transferred to copper and aluminum substrates, rGO-2 is not observed transcrystallinity layer produced,then using X-ray diffraction analyzer (XRD) and differential scanning calorimetry calorimeter (DSC) analysis showed that were occur α crystalline form characterized when were not appear βpeaks,confirmed various reduction levsel of reduction rGO as a nucleating agent, no effect isotactic polypropylene crystal structure.