TY  - JOUR
SP  - 1885
IS  - 7
PB  - Elsevier Ltd
AV  - public
Y1  - 2008///
VL  - 49
ID  - repounp38642
KW  - Bacterial cellulose
KW  -  Curvature
KW  -  Gel
TI  - Tubular Bacterial Cellulose Gel with Oriented Fibrils on the Curved Surface
N2  - On static cultivation, Acetobacter xylinum synthesizes bacterial cellulose (BC) that has a gel-like fibril network with inappropriate orientation at the air/liquid interface. This can be easily molded into desired shapes and sizes during synthesis. Here, we report a simple technique to synthesize tubular BC (BC?TS) gel with proper fibril orientation. We found that culturing BC in oxygen-permeable silicone tubes with inner diameter <8 mm yields a BC?TS gel of the desired length, inner diameter, and thickness with uniaxially oriented fibrils. The fibrils are oriented along the longitudinal axis of the silicone tube, independent of gravity, oxygen availability, and the morphology of the inner surface of the silicone tube but dependent on the curvature of the silicone tube. The degree of orientation (?n) of the BC?TS fibrils, as revealed by their birefringence, increases with decrease in the inner diameter of the silicone tube. BC?TS with a uniaxially oriented fibril structure has excellent mechanical properties and holds promise for use as a microvessel or soft tissue material in medical and pharmaceutical applications.
EP  - 1891
UR  - https://www.sciencedirect.com/science/article/abs/pii/S0032386108001468
JF  - Polymer
A1  - Putra, Ananda
A1  - Kakugo, Akira
A1  - Furukawa, Hidemitsu
A1  - Gong, Jian P.
A1  - Osada, Yoshihito
SN  - Print: 0032-3861 dan Online: 1873-2291
ER  -