Copyright (c) 2013 AJC
This work is licensed under a Creative Commons Attribution 4.0 International License.
Thermal Property of Poly(L-lactic Acid)/Sodium Alginate Composites: Crystallization and Melting Behaviour
Corresponding Author(s) : Yan-Hua Cai
Asian Journal of Chemistry,
Vol. 25 No. 6 (2013): Vol 25 Issue 6
Abstract
The crystallization and melting behaviour of poly(L-lactic acid) (PLLA)/sodium alginate (SA) composites with different content of sodium alginate has been investigated by differential scanning calorimetry and depolarized-light intensity measurement. Sodium alginate is effective nucleating agent for the crystallization and can increase the overall crystallization rate of PLLA. With the addition of 3 % sodium alginate, the induction time and crystallization half-time of PLLA/SA composites decrease from 12.8-0.7 and 26.5-1.4 min at 105 ºC, respectively. Sodium alginate addition makes crystallization peak for PLLA become sharp in the cooling process. The melting behaviour of PLLA/3 % SA composites during non-isothermal crystallization at different cooling rate shows that cooling rate of non-isothermal crystallization process obviously affect the melting behaviour of PLLA, with increasing of cooling rate, the double melting peak degenerates to single melting peak.
Keywords
Download Citation
Endnote/Zotero/Mendeley (RIS)BibTeX
- X.X. Li, J.B. Yin, Z.Y. Yu, S.F. Yan, X.C. Lu, Y.J. Wang, B. Cao and X.S. Chen, Polym. Comp., 30, 1338 (2009).
- S.M. Huang, J.J. Hwang, H.J. Liu and L.H. Lin, J. Appl. Polym. Sci., 117, 434 (2010).
- S.F. Yan, J.B. Yin, Y. Yang, Z.Z. Dai, J. Ma and X.S. Chen, Polymer, 48, 1688 (2007).
- Y.Y. Zhao, Z.B. Qiu and W.T. Yang, Comp. Sci Technol., 69, 627 (2009).
- Y.H. Cai, S.F. Yan, J.B. Yin, Y.Q. Fan and X.S. Chen, J. Appl. Polym. Sci., 121, 1408 (2011).
- T. Miyata and T. Masuko, Polymer, 39, 5515 (1998).
- M. Yasuniwa, S. Tsubakihara, Y. Sugimoto and C. Nakafuku, J. Polym. Sci. B: Polym. Phys., 42, 25 (2004)
References
X.X. Li, J.B. Yin, Z.Y. Yu, S.F. Yan, X.C. Lu, Y.J. Wang, B. Cao and X.S. Chen, Polym. Comp., 30, 1338 (2009).
S.M. Huang, J.J. Hwang, H.J. Liu and L.H. Lin, J. Appl. Polym. Sci., 117, 434 (2010).
S.F. Yan, J.B. Yin, Y. Yang, Z.Z. Dai, J. Ma and X.S. Chen, Polymer, 48, 1688 (2007).
Y.Y. Zhao, Z.B. Qiu and W.T. Yang, Comp. Sci Technol., 69, 627 (2009).
Y.H. Cai, S.F. Yan, J.B. Yin, Y.Q. Fan and X.S. Chen, J. Appl. Polym. Sci., 121, 1408 (2011).
T. Miyata and T. Masuko, Polymer, 39, 5515 (1998).
M. Yasuniwa, S. Tsubakihara, Y. Sugimoto and C. Nakafuku, J. Polym. Sci. B: Polym. Phys., 42, 25 (2004)