| 학회 |
한국고분자학회 |
| 학술대회 |
2017년 가을 (10/11 ~ 10/13, 제주컨벤션센터) |
| 권호 |
42권 2호 |
| 발표분야 |
고분자가공/복합재료 |
| 제목 |
Advanced dehydrate rate of nanocellulose suspension facilitated by tert-Butanol addition in oven drying method |
| 초록 |
Stock solution of cellulose nanocrystal containing a large amount of water (＞ 90%), leads to increase of manufacturing cost. Along with several ways for dehydration, oven drying method at high temperature is common one because of its availability and ease, however, the post-drying cellulose nanocrystal powder becomes difficult to redisperse in water in spite of harsh disintegrating treatments. In our study, tert-butanol (t-BuOH) was employed as assisted-drying agent, proved ability not to reduce time only, but t-BuOH also prevents surficial structure of these particles from exfoliation. A 12-folds decrease of drying time was achieved when cellulose nanocrystal solution (1 mL) was mixed with t-BuOH (9 mL) and dried in oven. Shrinkage of cellulose interfibril was also reduced since t-BuOH facilitates the surface tension of water while the residue of t-BuOH keeps nanocellulose particles in distance that make them redispersed well in water because of lack of hydrogen bond forming. |
| 저자 |
TRAN HONG THANG1, 오동엽2, 황성연2, 박제영2
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| 소속 |
1KRICT, 2한국화학(연) |
| 키워드 |
oven drying; tert butanol; cellulose nanocrystal
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| E-Mail |
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