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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학위논문
- 저자정보
- 지도교수
- 서영범
- 발행연도
- 2016
- 저작권
- 충남대학교 논문은 저작권에 의해 보호받습니다.
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초록· 키워드
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Lyocell is one of the highest quality regenerated cellulosic fabric, and the solvent for cellulose is the n-methylmorpholine n-oxide(NMMO), which is environmental- friendly one. Although the wood pulp was usually used as the raw material for Lyocell, in this study, the cotton linter was used as the raw material because of its higher resistibility against fabric fibrillation than wood pulp’s. However, due to the high degree of polymerization(DP) of the cotton linter, the pre-treatment for lowering DP to be dissolved in NMMO easily is needed .
In this study, the autohydrolysis has been used as pre-treatment to control the molecular weight and crystallinity of cotton linter to be dissolved well in NMMO solvent for manufacturing regenerated fibers.
The autohydrolysis pre-treatment without any chemical agents was found to be effective for lowering the molecular weight in addition to the environmental-friendly system than other type of pre-treatments.
The autohydrolysis was also found to be effective for the removal of metal ions that hamper the dissolution of cotton linter by NMMO when used along with ionic polymers and chelating agent.
The results of this study were summarized as followed:
1. Autohydrolysis pre-treatment made possible to control the molecular weight of cotton linter without consuming large amount of chemicals.
2. The autohydrolysis was found to be effective for the removal of metal ions when accompanied with chelating agents or ionic polymer
3. It was found that the autohydrolysis didn’t decrease the alpha-cellulose contents and brightness of the cotton linter.
In this study, the autohydrolysis has been used as pre-treatment to control the molecular weight and crystallinity of cotton linter to be dissolved well in NMMO solvent for manufacturing regenerated fibers.
The autohydrolysis pre-treatment without any chemical agents was found to be effective for lowering the molecular weight in addition to the environmental-friendly system than other type of pre-treatments.
The autohydrolysis was also found to be effective for the removal of metal ions that hamper the dissolution of cotton linter by NMMO when used along with ionic polymers and chelating agent.
The results of this study were summarized as followed:
1. Autohydrolysis pre-treatment made possible to control the molecular weight of cotton linter without consuming large amount of chemicals.
2. The autohydrolysis was found to be effective for the removal of metal ions when accompanied with chelating agents or ionic polymer
3. It was found that the autohydrolysis didn’t decrease the alpha-cellulose contents and brightness of the cotton linter.
목차
Ⅰ. 서론 1Ⅱ. 연구사 5Ⅲ. 재료 및 방법 83.1 공시재료 83.2 실험방법 93.2.1 전처리 공정 93.2.1.1 Autohydrolysis 전처리 93.2.1.2 킬레이트제 전처리 03.2.2 표백공정 113.2.2.1 Autohydrolysis 113.2.2.2 킬레이트제 123.2.3 Viscosity 측정 133.2.3.1 셀룰로오스 용액 제조 133.2.3.2 점도 측정 143.2.4 α-cellulose 측정 143.2.5 Brightness 측정 153.2.6 금속이온함량 측정 16Ⅳ. 결과 및 고찰 174.1. Autohydorlysis 시간에 따른 특성 분석 174.1.1 점도(Viscosity) 174.1.2. 알파셀룰로오스(α-cellulose) 194.1.3. 백색도 214.2. 킬레이트제 전처리에 따른 특성 분석 244.2.1 점도(Viscosity) 244.2.2. 알파셀룰로오스(α-cellulose) 264.2.3. 백색도 274.2.4. 금속이온함량 294.2.4.1 Fe 함량 294.2.4.2 Mg 함량 304.2.4.3 Ca 함량 32Ⅴ. 결 론 34참고문헌 36ABSTRACT 41
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