Improvement in the toughness and compatibility of poly(lactic acid)/starch acetoacetate through reactive melt-kneading with amine-modified silicone

Shibasaki, Kazuki; Hsu, Yu I.; Uyama, Hiroshi

Polymer Journal, 2024, 1622

アクセス数:430件（2025-08-14 18:32 集計）

固定URL: https://hdl.handle.net/11094/100123

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タイトル
Improvement in the toughness and compatibility of poly(lactic acid)/starch acetoacetate through reactive melt-kneading with amine-modified silicone
著者
著者名
Shibasaki, Kazuki
NRID
1000010757678 1000010757678
ORCID
0000-0002-4533-7200 0000-0002-4533-7200
researchmap permalink
yuihsu yuihsu
Scopus Author ID
55389981500 55389981500
著者名
Hsu, Yu I.
NRID
1000070203594 1000070203594
ORCID
0000-0002-8587-2507 0000-0002-8587-2507
researchmap permalink
read0168389 read0168389
Scopus Author ID
7102108908 7102108908
著者名
Uyama, Hiroshi
内容
The version of record of this article, first published in Polymer Journal, is available online at Publisher’s website: https://doi.org/10.1038/s41428-024-00971-0.
抄録
Nonbiodegradable plastic pollution has taken centerstage because of its negative impacts on ecosystems, and poly(lactic acid) (PLA)/starch blends, which are biodegradable plastics, have attracted increased attention as sustainable materials. However, the poor compatibility between hydrophobic PLA and hydrophilic starch causes their composites to become brittle. In this study, to improve the compatibility between PLA and starch, the hydroxyl groups of starch were modified with acetoacetate, and amine-modified silicone was used as the compatibilizer. The acetoacetyl group readily reacts with primary amines under mild conditions to form enamines and is expected to react rapidly during the melt-kneading process. The amino groups also react with the decomposed PLA end groups via condensation. Therefore, amine-modified silicone is considered a suitable compatibilizer for PLA and starch acetoacetate (SAA). PLA/SAA/amine-modified silicone blends were prepared via melt-kneading. The toughness of PLA/SAA was improved by approximately 15 times when 3 wt% amine-modified silicone was added. Furthermore, in the SEM observation of the tensile fracture surface, it was found that the dispersibility of SAA in PLA was improved such that SAA and PLA were indistinguishable. This approach can contribute to the widespread use of biodegradable plastics in packaging materials and single-use plastics.
出版者
Springer Nature
収録物名
Polymer Journal
ページ
1622
刊行年月
2024-12-13
言語
英語
ハンドルURL
https://hdl.handle.net/11094/100123
PISSN
00323896
eISSN
13490540
関連情報 (isIdenticalTo)
DOI (出版社版)
https://doi.org/10.1038/s41428-024-00971-0
アクセス権
open access
権利情報
This article is licensed under a Creative Commons Attribution 4.0 International License.
出版タイプ
Version of Record
カテゴリ
学術雑誌論文 Journal Article