TY  - JOUR
SP  - 93
PB  - Springer
AV  - public
Y1  - 2009/08/25/
VL  - 17
ID  - repounp38700
KW  - Bacterial cellulose
KW  -  Double-network hydrogel
KW  -  Polyacrylamide
KW  -  Mechanical properties
KW  -  Biomedical application
TI  - Ligament-Like Tough Double-Network Hydrogel Based on Bacterial Cellulose
N2  - Using the double-network (DN) method, bacterial cellulose/polyacrylamide (BC/PAAm) DN gels able to sustain not only high elongation but also high compression have been synthesized by combining BC gel as the first network with PAAm as the second network in the presence of N, N?-methylene bisacrylamide (MBAA) as a cross-linker. This DN gel was obtained by modifying the monomer concentration of the second network, acrylamide monomer (AAm) and MBAA, and by controlling the water content of the first network, BC gel. The mechanical properties are discussed in term of the swelling degree (q), which is independent of the concentration of AAm and MBAA. It was found that, for BC/PAAm DN gels with the first network formed from BC gel with high q (BC q=120), the tensile and compressive modulus (E) scales with q as (E ? q?²). The tensile fracture stress, ?F, of this DN gel was almost independent of q, but the compressive fracture stress scaled with q as (E ? q?²). Meanwhile, the tensile and compressive fracture strain (?F) of the gel is almost independent of q, which is caused by AAm concentration change, but linearly increased with q, which is caused by MBAA concentration change. Furthermore, by decreasing the water content of the BC gel prior to polymerization of the second (PAAm) network, a ligament-like tough BC/PAAm DN gel could be obtained with tensile strength of 40 MPa.
EP  - 101
UR  - https://link.springer.com/article/10.1007/s10570-009-9357-2
JF  - Cellulose
A1  - Hagiwara, Yui
A1  - Putra, Ananda
A1  - Kakugo, Akira
A1  - Furukawa, Hidemitsu
A1  - Gong, Jian Ping
SN  - Print: 0969-0239  dan Online: 1572-882X
ER  -