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.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2024.2
- 수록면
- 11 - 21 (11page)
이용수
초록· 키워드
오류제보하기
Carboxymethylation reaction in cellulose was investigated with sodium hydroxide concentration, monochloroacetic acid concentration, temperature, and reaction time as main variables. The degree of carboxymethylation in cellulose was analyzed by phenolphthalein titration, IR spectroscopy, and 1H-NMR spectroscopy methods. The NMR spectroscopic method showed more accurate DS (degree of substitution) values than other IR spectroscopy or titration methods. IR method had the advantage of quick measurement but was difficult in baseline correction. The titration method needed longer data acquisition time and higher deviation to less accuracy. Carboxymethylation in cellulose was run in SN2 reaction by sodium hydroxide and monochloroacetic acid concentration with main variables. Substitution position was analyzed by 1H-NMR spectroscopic with acid hydrolysates of carboxymethylated cellulose. Carboxymethylation in lower reaction temperatures led to more C6-hydorxyl substitution reactions in cellulose, but the C6- and C2-hydroxyl group position competed with increasing reaction temperature.
목차
ABSTRACT
1. Introduction
2. Materials and Methods
3. Results and Discussion
4. Conclusions
Literature Cited
참고문헌 (0)
참고문헌 신청이 논문의 저자 정보
이 논문과 함께 이용한 논문
최근 본 자료
댓글(0)
0