표면 개질된 셀룰로오스 나노섬유(CNF)를 혼입한 시멘트 복합체의 최적 배합 도출

초록

This study examined the effects of cellulose nanofibril (CNF) incorporation and surface modification with (3-aminopropyl)triethoxysilane (APTES) on cement mortar composites. Four conditions were tested: plain, unmodified CNF, APTES-modified CNF, and APTES solution only. The optimum performance was achieved when using 0.3 wt% CNF with 3 vol% APTES modification; the highest compressive and flexural strengths were achieved under this condition. Scanning electron microscopy, X-ray diffraction analysis, and Fourier transform infrared analysis confirmed the uniform dispersion and chemical bonding of modified CNF with hydration products. These findings demonstrated that APTES modification significantly enhances the reinforcing effect of CNF in cement composites. Thus, the optimum mix ratio of 0.3 wt% CNF and 3 vol% APTES was identified as the most effective combination for enhancing the mechanical performance of cement mortar composites.

키워드