Graft Copolymerization of Chitosan with L-Lactide under Microwave Irradiation

Article Preview

Abstract:

Poly (L-lactide) was grafted onto chitosan by ring-opening copolymerization under microwave irradiation in the presence of tin octoate (Sn (Oct)2) as catalyst. The chemical structure and physical properties of the copolymers with different feeding ratios were discussed by FTIR, DTG and X-RD, taking pure chitosan as reference. The results showed that the application of microwave irradiation in the reaction could achieve the copolymer with high grafting percentage in a short time and low temperature. The thermal stability and crystallinity were decreased with the feeding ratio increasing, attributing to the increasing of grafting percentage.

You might also be interested in these eBooks

Info:

Periodical:

Pages:

120-123

Citation:

Online since:

July 2015

Export:

Price:

Permissions CCC:

Permissions PLS:

Сopyright:

© 2015 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

* - Corresponding Author

[1] L. NettlesD, S.H. Elder and J. A Gibert: Tissue Engineering Vol. 8(2002), p.1009.

Google Scholar

[2] A.D. Martino, M. Sittinger and M.V. Risbud: Biomaterials Vol. 26(2005), p.5983.

Google Scholar

[3] L. Zhang, Q. Ao, A.J. Wang, G.G. Lu, L.J. Kong, Y.D. Gong, N. M Zhao and X.F. Zhang: Journal of Biomedical Materials Research Part A Vol. 77A(2007), p.277.

Google Scholar

[4] F.G. Yao, W. Chen, H. Wang, H.F. Liu, K.D. Yao, P.C. Sun and H. Lin: Polymer Vol. 44(2003), p.6435.

Google Scholar

[5] S.H. Hyon, K. Jamishidi and Y. Ikada: Biomaterials Vol. 18(1997), p.1503.

Google Scholar

[6] T. Ouchi, S. Ichimura and Y. Ohya: Polymer Vol. 47(2006), p.429.

Google Scholar

[7] X. Qu, A. Wirsen and A. Albertsson: Journal of Applied Polymer Science Vol. 74(2003), p.3186.

Google Scholar

[8] Y. Wu, Y.L. Zheng, W.L. Yang, C.C. Wang, J.H. Hu and S.K. Fu: Carbohydrate Polymers Vol. 59(2005) p.165.

Google Scholar

[9] X. Qu, A. Wirsen and A.C. Albertsson: Polymer Vol. 41(2000), p.4841.

Google Scholar

[10] Y. Liu, F. Tian and K.A. Hu: Carbohydrate Research Vol. 339(2004), p.845.

Google Scholar

[11] J. Shao, Y.M. Yang and Q.Q. Zhong: Polymer Degradation and Stability Vol. 82(2003), p.395.

Google Scholar

[12] H.C. Ge, W. Pang and D.K. Luo: Carbohydrate Polymers Vol. 66(2006), p.372.

Google Scholar

[13] V. Singh, D.N. Tripathi, A. Tiwari and R. Sanghi: Journal of Applied Polymer Science Vol. 95(2005), p.820.

Google Scholar

[14] V. Singh, A. Tiwari, D.N. Tripathi and R. Sanghi: Polymer Vol. 47(2006), p.254.

Google Scholar

[15] R. Jayakumar, M. Prabaharan, R.L. Reis and J.F. Mano: Carbohydrate Polymers Vol. 62(2005), p.142.

Google Scholar

[16] T. Yui, K. Imada, K. Okuyama, Y. Obata, K. Suzuki and K. Ogawa: Macromolecules Vol. 27(1994), p.7601.

DOI: 10.1021/ma00104a014

Google Scholar

[17] H. Tsuji and H. Muramatsu: Journal of Applied Polymer Science Vol. 81(2001), p.2151.

Google Scholar