Authors:
S. Montserrat Departement de Màquines i Motors Termics, E.T.S.E.I.T., Universitat Politècnica de Catalunya, Colom 11, E-08222 Terrassa

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P. Colomer Departement de Màquines i Motors Termics, E.T.S.E.I.T., Universitat Politècnica de Catalunya, Colom 11, E-08222 Terrassa

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Y. Calventus Departement de Màquines i Motors Termics, E.T.S.E.I.T., Universitat Politècnica de Catalunya, Colom 11, E-08222 Terrassa

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F. López-Carrasquero Departamento de Química, Facultad de Ciencias, Universidad de los Andes, 5101A Mérida, Venezuela

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A. Ilarduya Departament d'Enginyeria Química, E.T.S.E.I.B., Universitat Politècnica de Catalunya, Diagonal 647, E-08028 Barcelona, Spain

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S. Muñoz-Guerra Departament d'Enginyeria Química, E.T.S.E.I.B., Universitat Politècnica de Catalunya, Diagonal 647, E-08028 Barcelona, Spain

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Abstract  

A series of poly(α-n-alkyl β-L-aspartate)s (n being the number of carbon atoms in the linear alkyl side chain, withn=1, 2, 4, 6, 8, 12, 18 and 22), was studied by differential scanning calorimetry and thermogravimetric analysis. The effect of the length of the alkyl group on thermal properties such as stability, melting and crystallization of side chains, was investigated. For the polymers with n≥12, two endothermic peaks at T1 and T2 were detected separating three distinct phases A, B and C. The peak at T1 corresponds to the melting of the crystallized paraffinic side chains (transition A-B), and the peak: at T2 may be attributed to a transition (B-C), implying a liquid crystal phase.

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Journal of Thermal Analysis and Calorimetry
Language English
Size A4
Year of
Foundation
1969
Volumes
per Year
1
Issues
per Year
24
Founder Akadémiai Kiadó
Founder's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher
Chief Executive Officer, Akadémiai Kiadó
ISSN 1388-6150 (Print)
ISSN 1588-2926 (Online)

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