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고분자 나노복합소재 내의 그래핀 나노입자 분산성에 대한 유변학적 평가
하진수,송예은,주양율,황정민,윤지선,이두진 한국섬유공학회 2021 한국섬유공학회지 Vol.58 No.1
The dispersibility of nanoparticles in polymer nanocomposites significantlyaffects the mechanical, thermal, and electrical properties of the final products. The objectiveof this study is to quantify the dispersibility of nanoparticles in polymer nanocomposites. Various amounts of graphene nanoparticles were introduced in polypropylene-basedand polylactic acid-based resins through melt compounding. They were then injectionmoldedto fabricate disc-type specimens for characterizing the rheological properties ofthe nanocomposites. To evaluate the dispersibility of the nanoparticles in the composites,the associated storage (G’) and loss (G’‘) moduli were analyzed for plotting the G’-G’‘ slopes. Furthermore, the Van Gurp-Palmen plot was employed for analyzing the increase in materialelasticity with respect to the base resins and nanoparticle compositions.