키토산/세리신 블렌드 필름의 구조 및 특성

강세미; 노창환; 황대연; 정영진; 최해욱; 이언필; 이재호

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자료유형: 학술저널

저자정보: 강세미 (부산대학교 바이오소재과학과) 노창환 (부산대학교 바이오소재과학과) 황대연 (부산대학교 바이오소재과학과) 정영진 (부산대학교 바이오소재과학과) 최해욱 (부산대학교 바이오소재과학과) 이언필 (부산대학교 바이오소재과학과) 이재호 (부산대학교 바이오소재과학과)

저널정보: 한국섬유공학회 한국섬유공학회지 한국섬유공학회지 제49권 제1호

발행연도: 2012.1

수록면: 66 - 74 (9page)

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The uncrosslinked and crosslinked by ethylene glycol diglycidyl(EGDE) chitosan/sericin blend films were prepared by solvent blending method. Physicochemical properties of the prepared blend films according to various blend ratios were investigated. This was carried out by using universal testing machine, thermogravimeter(TGA), differential scanning calorimeter(DSC), wide angle X-ray diffractometer(WAXD), Fourier transform infrared spectrum(FTIR) and scanning electron microscopy(SEM). With an increase in the sericin mixing ratio, tensile stress increased whereas the tensile strain decreased for uncrosslinking blend films. For a cross linked chitosan/sericin blend film by EGDE, both the tensile stress and strain decreased. Chitosan/sericin blend films exhibit an excellent thermal stability when sericin mixing ratio is 25%. In the infrared spectra, chitosan/sericin blend films showed an absorption band of amide I peak at 1630 $cm^{-1}$ and it is concerned with C=O stretching vibration by strong hydrogen-bond between inter-molecular. These also showed an absorption band of amide II peak at 1521 $cm^{-1}$ concerned with N-H bending vibration. The absorption band of amide I peak decreased with an increase in the chitosan mixing ratio. We identified that there was good miscibility between chitosan and sericin. The water-retention values(WRV) of chitosan/sericin blend films increase as the amount of sericin is raised and this owes to the hydrophilic nature of sericin. Weight loss of the citosan/sericin blend films by cleaning with an aqueous sodium hydroxide increased with an increase in the sericin mixing ratio. This loss is the loss of acetic acid and sericin in the chitosan/sericin blend films and this is because of the molecular weight of the sericin is 1/5 of the chitosan and sericin is dissolved into NaOH solution. Weight loss increased when sericin content was more than 50% for the cross linked chitosan/sericin blend films. From the structure analysis, we identified that there was good miscibility and strong intermolecular interaction between the chitosan molecules that resulted from intermolecular hydrogen bonds.

#chitosan/sericin blend film #EGDE #tensile stress and strain #thermal stability #miscibility #weight loss

참고문헌 (30)

참고문헌 신청

이재호 / 2010 / 키토산/PVA 블렌드 필름의 구조 및 특성 / 한국섬유공학회지 47(2):92~101

キチン, キトサン硏究會 / 1995 / キチン, キトサンハンドブッグ / 技報堂出版 :178~202

M. Miya / 1984 / Structures and Tensile Properties of Chitosan Films / J Polym Sci: Polym Phys Ed 22:1149~1153

J. Xu / 1996 / Chitosan Film Acylation and Effects on Biodegradability / Macromolecules 29:3436~3440

C. Peniche / 1998 / Interpolymer Complex of Chitosan and Polymethacrylic Derivatives of Salicylic Acid Prparation, Characterization and Modification by Thermal Treatment / Polymer 39:6549~6554