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Polymers 2018, 10(8), 874;

Compatibility Evaluation of Non-Woven Sheet Composite of Silk Fibroin and Polyurethane in the Wet State

Department of Biotechnology and Life Science, Tokyo University of Agriculture and Technology, 2-24-16 Naka-cho, Koganei, Tokyo 184-8588, Japan
Department of Applied Chemistry, National Defense Academy, 1-10-20 Hashirimizu, Yokosuka, Kanagawa 239-8686, Japan
Silk Material Research Unit, Institute of Agrobiological Sciences, National Agriculture and Food Research Organization, Ohwashi, Tsukuba, Ibaraki 305-8634, Japan
Author to whom correspondence should be addressed.
Received: 18 June 2018 / Revised: 1 August 2018 / Accepted: 2 August 2018 / Published: 6 August 2018
(This article belongs to the Special Issue Protein Biopolymer)
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SF/polyurethane composite non-woven sheet was fabricated to evaluate the cardiovascular tissue engineering materials in the wet state. The compatibility and microstructure analyses were carried out on the fabricated SF/polyurethane composite non-woven sheet by thermal analysis and solid-state NMR analysis in the wet state. To evaluate the modulus of elasticity, a tensile test was performed and supported with dynamic viscoelasticity and mechanical analysis. Results showed that SF/polyurethane composites form domains within the non-woven sheet and are in a finely dispersed state while maintaining their structures at a scale of several tens of nm. Moreover, an increase of the loss tangent with low elastic modulus proved that a micromolecular interaction occurs between silk fibroin (SF) and polyurethane molecules. View Full-Text
Keywords: silk fibroin; solid-state NMR; electrospinning; polyurethane silk fibroin; solid-state NMR; electrospinning; polyurethane

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Aytemiz, D.; Fukuda, Y.; Higuchi, A.; Asano, A.; Nakazawa, C.T.; Kameda, T.; Yoshioka, T.; Nakazawa, Y. Compatibility Evaluation of Non-Woven Sheet Composite of Silk Fibroin and Polyurethane in the Wet State. Polymers 2018, 10, 874.

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