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Please use this identifier to cite or link to this item: http://hdl.handle.net/10119/13523

Title: Syntheses of rigid-rod but degradable biopolyamides from itaconic acid with aromatic diamines
Authors: Ali, Mohammad Asif
Tateyama, Seiji
Kaneko, Tatsuo
Keywords: itaconic acid
bioplastics
polyamides
heterocycles
biodegradation
Issue Date: 2014-06-11
Publisher: Elsevier
Magazine name: Polymer Degradation and Stability
Volume: 109
Start page: 367
End page: 372
DOI: 10.1016/j.polymdegradstab.2014.05.031
Abstract: Highly-thermostable but degradable polyamides have been synthesized by a polycondensation of bio-derived itaconic acid salts with aromatic diamines to form heterocyclic pyrrolidone ring in the polymer backbone. The molecular weight was greater than 33600 g/mol. Glass transition temperatures, T_g, and 10% weight loss temperatures, T_<10>, ranged 156–242 °C and 370–400 °C, respectively, which were higher than those of conventional bio-based plastics. However their processability was too low to process the fiber as specimens of mechanical tests. We then incorporated an appropriate amount of aliphatic moiety into the aromatic backbones to prepare the high-performance and processable polyamides with T_g over 115 °C and T_<10> over 355 °C. The processed fibers showed tensile strength and Young's modulus ranged 20–58 MPa and 0.2–2.3 GPa, respectively. The degradation behaviors inside soil and under ultraviolet-irradiation in water were additionally found.
Rights: Copyright (C)2014, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International license (CC BY-NC-ND 4.0). [http://creativecommons.org/licenses/by-nc-nd/4.0/] NOTICE: This is the author's version of a work accepted for publication by Elsevier. Mohammad Asif Ali, Seiji Tateyama, Tatsuo Kaneko, Polymer Degradation and Stability, 109, 2014, 367-372, http://dx.doi.org/10.1016/j.polymdegradstab.2014.05.031
URI: http://hdl.handle.net/10119/13523
Material Type: author
Appears in Collections:c10-1. 雑誌掲載論文 (Journal Articles)

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