아민화 CNF를 포함한 시멘트 복합체의 미세구조 및 역학적 특성 분석 연구

초록

In this study, the effects of incorporating aminated cellulose nanofibers (CNF) into cement composites to improve their mechanical and microstructural performance were investigated. CNF was chemically modified using (3-aminopropyl) triethoxysilane to enhance dispersion and interfacial bonding with cement hydration products. Surface modification was confirmed through SEM and XRD analyses. Cement mortar specimens were prepared with varying dosages of untreated and aminated CNF, and their compressive and flexural strengths were evaluated. Results indicated that the aminated CNF improved the compressive strength and flexural performance at 0.2% and 0.3%, respectively. Microstructural analysis revealed a dense matrix and reduced porosity caused by the improved interactions between the aminated CNF and the cement hydrates. These findings indicate the potential application of chemically modified CNF as a functional additive for the development of sustainable, high-performance cementitious materials.

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