The Crystallization, Melting Behavior, and Thermal Stability of Poly(L-lactic acid) Induced by N,N,N′-Tris(benzoyl) Trimesic Acid Hydrazide as an Organic Nucleating Agent
Joint Authors
Source
Advances in Materials Science and Engineering
Issue
Vol. 2014, Issue 2014 (31 Dec. 2014), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2014-12-18
Country of Publication
Egypt
No. of Pages
8
Abstract EN
N,N,N′-Tris(benzoyl) trimesic acid hydrazide (TTAD), as a novel nucleating agent of poly(L-lactic acid) (PLLA), was synthesized and characterized by FT-IR and 1H NMR.
The crystallization, melting behavior, and thermal stability of PLLA induced by TTAD were investigated through DSC, TGA, depolarized-light intensity measurement, and so forth.
The crystallization behavior indicated that the presence of TTAD accelerated the overall PLLA crystallization.
Compared to neat PLLA, the crystallization onset temperature of PLLA/1%TTAD increased from 101.36°C to 125.26°C, the melt-crystallization peak temperature increased from 94.49°C to 117.56°C, crystallization enthalpy increased from 0.1023 J·g−1 to 33.44 J·g−1 at a cooling rate of 1°C/min from melt, and the crystallization half-time of PLLA/TTAD decreased from 2997.2 s to 108.9 s at 110°C.
Moreover, the nonisothermal crystallization measurements also indicated that the crystallization peak became wider and shifted to a lower temperature with increasing cooling rate.
With the presence of TTAD, the melting behavior of PLLA was affected significantly, and a double-melting peak occurred due to melting-recrystallization.
Thermal stability research showed that there existed one degradation stage of PLLA and PLLA/TTAD samples, and the thermal degradation temperature of PLLA/TTAD decreased compared to neat PLLA.
American Psychological Association (APA)
Cai, Yan-Hua& Zhang, Yan-Hua. 2014. The Crystallization, Melting Behavior, and Thermal Stability of Poly(L-lactic acid) Induced by N,N,N′-Tris(benzoyl) Trimesic Acid Hydrazide as an Organic Nucleating Agent. Advances in Materials Science and Engineering،Vol. 2014, no. 2014, pp.1-8.
https://search.emarefa.net/detail/BIM-1015884
Modern Language Association (MLA)
Cai, Yan-Hua& Zhang, Yan-Hua. The Crystallization, Melting Behavior, and Thermal Stability of Poly(L-lactic acid) Induced by N,N,N′-Tris(benzoyl) Trimesic Acid Hydrazide as an Organic Nucleating Agent. Advances in Materials Science and Engineering No. 2014 (2014), pp.1-8.
https://search.emarefa.net/detail/BIM-1015884
American Medical Association (AMA)
Cai, Yan-Hua& Zhang, Yan-Hua. The Crystallization, Melting Behavior, and Thermal Stability of Poly(L-lactic acid) Induced by N,N,N′-Tris(benzoyl) Trimesic Acid Hydrazide as an Organic Nucleating Agent. Advances in Materials Science and Engineering. 2014. Vol. 2014, no. 2014, pp.1-8.
https://search.emarefa.net/detail/BIM-1015884
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1015884