미더덕껍질을 이용한 셀룰로오스 필름의 제조 및 특성
Properities of Regnerated Cellulose films Prepared from the Tunicate Styela Clava
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초록
The tunic of Styela clava (SCT) consists of a proteoglycan network. Regenerated cellulose films were prepared by solution casting and coagulation of SCT in N-methylmorpholine-N-oxide (NMMO)/H₂O (87/13 wt%). The crystalline structure of powdered SCT was primarily that of cellulose I. The crystalline structure of SCT films exhibited a cellulose II structure, similar to that of viscose rayon. Physical characterization of SCT films and fibers revealed an intrinsic viscosity (η) of 6.35dL/g, average molecular weight (Mw) of 423,000g/M, and fiber density of 1.50g/cm3 with a moisture regain and water absorption of 10.20% and 365%, respectively. The results were similar to those of cellulose films regenerated from wood pulp. Films prepared with 6 wt% SCT exhibited strong tensile strength, high water absorption, and a greater degree of elongation. Scanning electron micrographs (SEM) of film cross-sections showed a layered, sponge-like structure.
Abstract
The tunic of Styela clava (SCT) consists of a proteoglycan network. Regenerated cellulose films were prepared by solution casting and coagulation of SCT in N-methylmorpholine-N-oxide (NMMO)/H₂O (87/13 wt%). The crystalline structure of powdered SCT was primarily that of cellulose I. The crystalline structure of SCT films exhibited a cellulose II structure, similar to that of viscose rayon. Physical characterization of SCT films and fibers revealed an intrinsic viscosity (η) of 6.35dL/g, average molecular weight (Mw) of 423,000g/M, and fiber density of 1.50g/cm3 with a moisture regain and water absorption of 10.20% and 365%, respectively. The results were similar to those of cellulose films regenerated from wood pulp. Films prepared with 6 wt% SCT exhibited strong tensile strength, high water absorption, and a greater degree of elongation. Scanning electron micrographs (SEM) of film cross-sections showed a layered, sponge-like structure.
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