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http://dx.doi.org/10.5762/KAIS.2014.15.7.4081

Study on miscibility, morphology, thermal and mechanical properties of elastomeric impact modifier reinforced Poly(lactide)/Cellulose ester blends  

Park, Jun-Seo (Department of Applied Chemical Engineering, School of Energy.Materials.Chemical Engineering, Korea University of Technology and Education)
Nam, Byeong-Uk (Department of Applied Chemical Engineering, School of Energy.Materials.Chemical Engineering, Korea University of Technology and Education)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.15, no.7, 2014 , pp. 4081-4086 More about this Journal
Abstract
Cellulose acetate butyrate (CAB) is a biodegradable resin with excellent optical properties, but it is difficult to apply film process. In this study, an attempt was made to improve the processability of CAB using polyactic acid and the mechanical properties using an impact modifier. Polylacitc acid (PLA)/Cellulose acetate butyrate (CAB) blends with an impact modifier were prepared using a twin screw extruder. The temperature range was $140^{\circ}C$ to $200^{\circ}C$, and the screw speed was fixed to 200 rpm. To evaluate the miscibility of impact modified CAB/PLA, the glass transition behavior and morphology were observed by DSC and FE-SEM. The mechanical properties were investigated by dynamic mechanical analysis (DMA) and a Universal Testing Machine (UTM). In addition, the effect of an impact modifier in the polymer matrix was determined using a notched Izod impact strength tester. Finally, the PLA/CAB/impact modifier 75/25/10 ratio was found to be a compatible system. In the 10wt.% impact modifier, the sample had a 4 times higher izod impact strength than the non-toughening composition.
Keywords
PLA; CAB; elvaloy; impact modifier; thermal property; mechanical property;
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Times Cited By KSCI : 2  (Citation Analysis)
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