Effect of degree of substitution on the microphase separation and mechanical properties of cellooligosaccharide acetate-based elastomers

Katsuhara, Satoshi; Sunagawa, Naoki; Igarashi, Kiyohiko; Takeuchi, Yutaka; Takahashi, Kenji; Yamamoto, Takuya; Li, Feng; Tajima, Kenji; Isono, Takuya; Satoh, Toshifumi

Effect of degree of substitution on the microphase separation and mechanical properties of cellooligosaccharide acetate-based elastomers

Katsuhara, Satoshi; Sunagawa, Naoki; Igarashi, Kiyohiko et al.

Carbohydrate Polymers, 2023, 316, 120976

Permalink : https://hdl.handle.net/2115/92207

このアイテムのアクセス数:207件（2026-10-12 16:08 集計）

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アクセス権	open access
URI	https://hdl.handle.net/2115/92207
タイトル	Effect of degree of substitution on the microphase separation and mechanical properties of cellooligosaccharide acetate-based elastomers
著者	Katsuhara, Satoshi ; Sunagawa, Naoki ; Igarashi, Kiyohiko ; Takeuchi, Yutaka ; Takahashi, Kenji ; Yamamoto, Takuya ; Li, Feng ; Tajima, Kenji ; Isono, Takuya ; Satoh, Toshifumi
著者名 Katsuhara, Satoshi
e-Rad_Researcher 90839044 著者名 Sunagawa, Naoki
e-Rad_Researcher 80345181 著者名 Igarashi, Kiyohiko
e-Rad_Researcher 70418680 著者名 Takeuchi, Yutaka
e-Rad_Researcher 00216714 著者名 Takahashi, Kenji
e-Rad_Researcher 30525986 著者名 Yamamoto, Takuya
e-Rad_Researcher 30902788 著者名 Li, Feng
e-Rad_Researcher 00271643 著者名 Tajima, Kenji
e-Rad_Researcher 70740075 著者名 Isono, Takuya
e-Rad_Researcher 80291235 著者名 Satoh, Toshifumi
言語	英語
キーワード	Thermoplastic elastomer
	Cellulose acetate
	Mechanical properties
	Biodegradability
	Microphase separation
	Self-assembly
発行日	2023-09-15
出版者	Elsevier
収録物名	Carbohydrate Polymers
巻(号)	316
ページ	120976
抄録	Thermoplastic elastomers (TPEs) have long been used in a wide range of industries. However, most existing TPEs are petroleum-derived polymers. To realize environmentally benign alternatives to conventional TPEs, cellulose acetate is a promising TPE hard segment because of its sufficient mechanical properties, availability from renewable sources, and biodegradability in natural environments. Because the degree of substitution (DS) of cellulose acetate governs a range of physical properties, it is a useful parameter for designing novel cellulose acetate-based TPEs. In this study, we synthesized cellulose acetate-based ABA-type triblock copolymers (AcCelx- b-PDL-b-AcCelx) containing a celloologosaccharide acetate hard A segment (AcCelx, where x is the DS; x = 3.0, 2.6, and 2.3) and a poly(o-decanolactone) (PDL) soft B segment. Small-angle X-ray scattering showed that decreasing the DS of AcCelx-b-PDL-b-AcCelx resulted in the formation of a more ordered microphase-separated structure. Owing to the microphase separation of the hard cellulosic and soft PDL segments, all the AcCelx-b- PDL-b-AcCelx samples exhibited elastomer-like properties. Moreover, the decrease in DS improved toughness and suppressed stress relaxation. Furthermore, preliminary biodegradation tests in an aqueous environment revealed that the decrease in DS endowed AcCelx-b-PDL-b-AcCelx with greater biodegradability potential. This work demonstrates the usefulness of cellulose acetate-based TPEs as next-generation sustainable materials.
資源タイプ	学術雑誌論文
出版タイプ	Accepted Manuscript
権利情報	Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
権利情報	© <2023>. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
PISSN	0144-8617
関連情報	PMID 37321706
関連情報 (isVersionOf)	出版社版DOI https://doi.org/10.1016/j.carbpol.2023.120976