| 학회 |
한국고분자학회 |
| 학술대회 |
2021년 가을 (10/20 ~ 10/22, 경주컨벤션센터) |
| 권호 |
46권 2호 |
| 발표분야 |
고분자 가공/복합재료 |
| 제목 |
Solid-matrix assisted printing of 3D bacterial cellulose and formation of a cryogel with polyvinyl alcohol |
| 초록 |
The 3D structure of bacterial cellulose was prepared by printing bacterial ink using solid matrix-assisted 3D printing followed by incubating the printed features in air. Bacterial ink contains Gluocoacetobactor.xylinus, culture medium and CM-CNF suspension as a gelling agent. Because of the high water content of BC pellicles near 99%, polyvinyl alcohol (PVA) was interpenetrated into BC networked structure filling the space between the nanofibers. Subsequently a formed BC/PVA complex was frozen and thawed several times. PVA chains were recrystallized at the surface of BC nanofibers inducing crystallization and cryogelation. We think that numerous hydroxyl groups on the BC nanofibers are the main driving force for the assembly of PVA chains and trying to find the relationship between the functional groups and the crystallization. |
| 저자 |
김재환, 현진호, 최준식
|
| 소속 |
서울대 |
| 키워드 |
3d printing; bacterial cellulose; tough hydrogel; poly vinylalcohol cryogel
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| E-Mail |
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