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.
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초록· 키워드
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The cotton contains various impurities such as protein, wax, pectins, coloring matter, even though cotton has been a major source of pure cellulose. The purification processes have been commonly applied to obtain the pure cellulose. However the excessive purification treatments could lead to the damage in the cellulose structure which could result in the degradation of cellulose and the limited application of cotton cellulose. In this study, the changes in cellulose structural properties such as crystallinity and DP(degree of polymerization) by the various conditions of the purification processes were investigated. The less toxic agents such as hydrogen peroxide and sodium silicate were applied for the purification treatment in this study. The increase in the process times, the temperature and the applied amount of chemical agents resulted in the more purified cellulose. The DP of cotton cellulose was increased at the first weak conditions by the reduction of small molecules such as pectin, wax, and so on. Especially the 2 % addition amount of H2O2 with Na2SiO3 resulted in the higher value in the DP and the brightness compared to the 1.5 % addition amount of H2O2. However, the 4 % addition amount of H2O2 with Na2SiO3 showed the decreased value because of excessive treatment. In case of the changes in the crystallinity (Gjk), the highest value of the crystallinity was obtained by the 2% addition amount of H2O2 on the cotton cellulose, which showed similar with the change in the DP.
목차
ABSTRACT
1. 서론
2. 재료 및 방법
3. 결과 및 고찰
4. 결론
Literature Cited
참고문헌 (18)
참고문헌 신청
1. [학술지(정기간행물)] - Wang, Y. / 2008 / Effect of enzymatic treatment on cotton fiber dissolution in NaOH/urea solution at cold temperature / Carbohydrate Polymers 72 (1) : 178 ~ 184
2. [학술지(정기간행물)] - Engstrom, A. C. / 2006 / Improved accessibility and reactivity of dissolving pulp for the viscose process : pretreatment with monocomponent endoglucanase / Biomacromolecules 7 : 2027 ~ 2031
3. [학술지(정기간행물)] - Gumuskaya, E. / 2003 / The effects of various pulping conditions on crystalline structure of cellulose in cotton linters / Polymer Degradation and Stability 81 (3) : 559 ~ 564
4. [학술지(정기간행물)] - Gumuskaya, E. / 2006 / Dependence of chemical and crystalline structure of alkali sulfite pulp on cooking temperature and time / Carbohydrate Polymers 65 (4) : 461 ~ 468
5. [단행본] - Zugenmaier, P. / 2008 / Crystalline cellulose and derivatives ; characterization and structure / Springer : 4 ~ 5
2. [학술지(정기간행물)] - Engstrom, A. C. / 2006 / Improved accessibility and reactivity of dissolving pulp for the viscose process : pretreatment with monocomponent endoglucanase / Biomacromolecules 7 : 2027 ~ 2031
3. [학술지(정기간행물)] - Gumuskaya, E. / 2003 / The effects of various pulping conditions on crystalline structure of cellulose in cotton linters / Polymer Degradation and Stability 81 (3) : 559 ~ 564
4. [학술지(정기간행물)] - Gumuskaya, E. / 2006 / Dependence of chemical and crystalline structure of alkali sulfite pulp on cooking temperature and time / Carbohydrate Polymers 65 (4) : 461 ~ 468
5. [단행본] - Zugenmaier, P. / 2008 / Crystalline cellulose and derivatives ; characterization and structure / Springer : 4 ~ 5
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UCI(KEPA) : I410-ECN-0101-2014-580-003321884