인문학
사회과학
자연과학
공학
의약학
농수해양학
예술체육학
복합학
지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록·키워드
In this study, we investigated the effect of the cellulose nanofibril (CNF)/alginate mixing ratio on the rheological properties of composite spinning dopes and the mechanical properties of ionically crosslinked wet gels and dried filaments. CNF and alginate were mixed at solid-based ratios of 8:2, 6:4, 4:6, and 2:8, while maintaining a constant total solids content. All composite spinning dopes exhibited shear-thinning behavior. With increasing CNF content, the elastic behavior became more dominant because of the formation of a physically entangled fibrillar network. When the CNF content was 40% or higher, the storage modulus remained greater than the loss modulus throughout the tested frequency range. The TPA hardness of the divalent-cation-crosslinked wet gels increased with alginate content, indicating greater resistance to compressive deformation. Meanwhile, the tensile strength of the dried composite filaments increased with CNF content. Cross-sectional scanning electron microscopy images revealed more pronounced fibrillar structures and denser networks in filaments with higher CNF content. The mixing ratio affected the mechanical properties differently before and after drying: alginate predominantly contributed to the compressive resistance of the ionically crosslinked wet gels, whereas CNF enhanced the tensile strength of the dried composite filaments via interfibrillar bonding and network formation.
본문·목차
인공지능 문자 인식 모델을 통해 추출된 텍스트로, 일부 오타나 오류가 포함될 수 있으나 지속적으로 개선 중입니다.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.