| 학회 |
한국고분자학회 |
| 학술대회 |
2019년 봄 (04/10 ~ 04/12, 부산컨벤션센터(BEXCO)) |
| 권호 |
44권 1호 |
| 발표분야 |
고분자구조 및 물성 |
| 제목 |
Rhelogical behevior and phase transition of concentrated microcrystalline cellulose(MCC) / Ionic liquid / HNTs mixtures |
| 초록 |
The liquid crystal (LC) phase can be used to produce ultra-high strength fiber. Although the LC of cellulose was reported several times, the solution process is limited due to the high viscosity and the gelation of the LC phase solution. We studied the rheological properties and the phase change of cellulose / ionic liquid solution along the amount of halloysite nanotubes (HNTs) and co-solvent using POM and rotational type rheometer. As the HNTs content increased, the transition concentration to LC state was decreased. The HNTs in the solution gave an extra volume exclusive effect on the solution, resulting in the increase of the local concentration. The addition of DMF into the solution decreased the viscosity without the phase change. Especially DMF effectively prevented the gelation of the solution even in high concentration. The reduction of the phase transition concentration and the viscosity will be beneficial for further process such as fiber spinning or electrospinning. |
| 저자 |
김태호, 김형섭, 송영한
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| 소속 |
건국대 |
| 키워드 |
Cellulose; Liquid crystal; Ionic liquid; HNTs; Rheology; Phase transition
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| E-Mail |
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