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폴리프로필렌/대나무 섬유 복합체의 물성에 대한 상용화제의 영향
이종원 ( Jong Won Lee ),구선교 ( Sun Gyo Ku ),이범희 ( Beom Hee Lee ),이기웅 ( Ki Oong Lee ),김철우 ( Cheol Woo Kim ),김기성 ( Ki Sung Kim ),김연철 ( Youn Cheol Kim ) 한국공업화학회 2015 공업화학 Vol.26 No.5
Polypropylene (PP)/bamboo fiber (BF) composites were fabricated by twin screw extruder in order to investigate effects of the compatibilizer on physical properties of PP/BF composites. The content of BF changed from 10 to 25 wt% and that of the compatibilizer was fixed at 3 wt%. Maleic anhydride grafted PP (PP-g-MAH) was used to increase the compatibility between PP and BF as a compatibilizer. Chemical structures of the composites were confirmed by the existence of carbonyl group (C=O) stretching peak at 1,700 cm-1 in FT-IR spectrum. Considering the degradation and mechanical properties, the optimum extrusion conditions were selected to be 210 ℃ and 100 rpm, respectively. There was no distinct changes in melting temperature of the composites, but the crystallization temperature increased by 10-20 ℃ owing to the heterogeneous nuclei of BF. It was checked that the optimum BF content was in the range of 15-20 wt% from the results of tensile and flexural properties of the composites. The effect of the compatibilizer on mechanical properties was confirmed by SEM images of fractured surface and contact angles.