Fabrication of Silk Resin with High Bending Properties by Hot-Pressing and Subsequent Hot-Rolling

Anh Tuan, Hoang; Hirai, Shinji; Inoue, Shota; A. H. Mohammed, Alharbi; Akioka, Shota; Ngo Trinh, Tung

doi:10.3390/ma13122716

Open AccessArticle

Fabrication of Silk Resin with High Bending Properties by Hot-Pressing and Subsequent Hot-Rolling

by

Hoang Anh Tuan

^1,2,*,

Shinji Hirai

^1,*,

Shota Inoue

¹,

Alharbi A. H. Mohammed

¹

,

Shota Akioka

¹ and

Tung Ngo Trinh

³

¹

Research Center for Environmentally Friendly Materials Engineering, Muroran Institute of Technology, 27–1 Mizumoto, Muroran 050–8585, Japan

²

Technology and Alloys of casting Department, Research Institute of Technology for Machinery, Vietnam Engine and Agricultural Machinery Corporation-Joint Stock Company, No 25 Vu Ngoc Phan, Hanoi 100000, Vietnam

³

Function Polymers and Nano Materials Laboratory, Institute of Chemistry, Vietnam Academy of Science and Technology, No.08 Hoang Quoc Viet, Hanoi 100000, Vietnam

^*

Authors to whom correspondence should be addressed.

Materials 2020, 13(12), 2716; https://doi.org/10.3390/ma13122716

Submission received: 28 March 2020 / Revised: 23 April 2020 / Accepted: 28 April 2020 / Published: 15 June 2020

(This article belongs to the Section Biomaterials)

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Abstract

This research reports the processability and mechanical properties of silk resins prepared by hot-pressing followed by hot-rolling and then analyzes their thermal and structural properties. The results show that regenerated silk (RS) resins are better suited for hot-rolling than Eri and Bombyx mori silk resins (untreated silk). When hot-rolling at 160 °C with a 50% of reduction ratio, maximum bending strength and Young’s modulus of RS resin reaches 192 MPa and 10.2 GPa, respectively, after pretreatment by immersion in 40 vol% ethanol, and 229 MPa and 12.5 GPa, respectively, after pretreatment by immersion in boiling water. Increased strength of the material is attributed to the increased content of aggregated strands and intramolecular linking of β sheets (attenuated total reflectance Fourier-transform infrared spectroscopy) and higher crystallinity (X-ray diffraction analysis). After hot-pressing and hot-rolling, RS resins have a stable decomposition temperature (297 °C).

Keywords: regenerated silk powder; resinification; hot-pressing; hot-rolling; Eri silk; Bombyx mori silk

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MDPI and ACS Style

Anh Tuan, H.; Hirai, S.; Inoue, S.; A. H. Mohammed, A.; Akioka, S.; Ngo Trinh, T. Fabrication of Silk Resin with High Bending Properties by Hot-Pressing and Subsequent Hot-Rolling. Materials 2020, 13, 2716. https://doi.org/10.3390/ma13122716

AMA Style

Anh Tuan H, Hirai S, Inoue S, A. H. Mohammed A, Akioka S, Ngo Trinh T. Fabrication of Silk Resin with High Bending Properties by Hot-Pressing and Subsequent Hot-Rolling. Materials. 2020; 13(12):2716. https://doi.org/10.3390/ma13122716

Chicago/Turabian Style

Anh Tuan, Hoang, Shinji Hirai, Shota Inoue, Alharbi A. H. Mohammed, Shota Akioka, and Tung Ngo Trinh. 2020. "Fabrication of Silk Resin with High Bending Properties by Hot-Pressing and Subsequent Hot-Rolling" Materials 13, no. 12: 2716. https://doi.org/10.3390/ma13122716

APA Style

Anh Tuan, H., Hirai, S., Inoue, S., A. H. Mohammed, A., Akioka, S., & Ngo Trinh, T. (2020). Fabrication of Silk Resin with High Bending Properties by Hot-Pressing and Subsequent Hot-Rolling. Materials, 13(12), 2716. https://doi.org/10.3390/ma13122716

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Fabrication of Silk Resin with High Bending Properties by Hot-Pressing and Subsequent Hot-Rolling

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