Superior hybrid hydrogels of polyacrylamide enhanced by bacterial cellulose nanofiber clusters
作者： Ningxiao Yuan , Lu Xu , Lu Zhang , Haowen Ye , Jianhao Zhao
DOI: 10.1016/J.MSEC.2016.04.074
关键词:
摘要: Hybrid polyacrylamide/bacterial cellulose nanofiber clusters (PAM/BC) hydrogels with high strength, toughness and recoverability were synthesized by in situ polymerization of acrylamide monomer BC suspension. The hybrid gels exhibited an extremely large elongation at break 2200%, a fracture stress 1.35MPa. Additionally, the original length could be recovered after releasing tensile force. Compressive results showed that PAM/BC reach strain about 99% without break, was able to completely recover its shape immediately compression compressive reached as 30MPa. Nearly no hysteresis cyclic tests observed these gels. FT-IR, XRD TGA analysis hydrogen bonds between PAM chains mainly contributed superior mechanical properties hydrogels. cell viability suggested hydrogel benign for biomedical application. These offer great promise biomaterials such bone cartilage repair materials.
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