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Nanostructured Phas...
Nanostructured Phase Morphology of a Biobased Copolymer for Tough and UV-Resistant Polylactide
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- Xu, Huan (author)
- China Univ Min & Technol, Sch Mat Sci & Phys, Xuzhou 221116, Jiangsu, Peoples R China.
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- Zhou, Juan (author)
- Jiangnan Univ, Sch Pharmaceut Sci, Key Lab Carbohydrate Chem & Biotechnol, Minist Educ, Wuxi 214122, Jiangsu, Peoples R China.
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- Odelius, Karin (author)
- KTH,Polymerteknologi
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- Guo, Zhijun (author)
- China Univ Min & Technol, Sch Mat Sci & Phys, Xuzhou 221116, Jiangsu, Peoples R China.
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- Guan, Xin (author)
- China Univ Min & Technol, Sch Mat Sci & Phys, Xuzhou 221116, Jiangsu, Peoples R China.
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- Hakkarainen, Minna (author)
- KTH,Polymerteknologi
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China Univ Min & Technol, Sch Mat Sci & Phys, Xuzhou 221116, Jiangsu, Peoples R China Jiangnan Univ, Sch Pharmaceut Sci, Key Lab Carbohydrate Chem & Biotechnol, Minist Educ, Wuxi 214122, Jiangsu, Peoples R China. (creator_code:org_t)
- 2021-03-15
- 2021
- English.
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In: ACS Applied Polymer Materials. - : American Chemical Society (ACS). - 2637-6105. ; 3:4, s. 1973-1982
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- Despite technological feasibility and industrial scalability in toughening polylactide (PLA) by direct blending, avoiding the sacrifice of mechanical strength or full renewability remains a challenge. Here, low-molecular-weight poly(ethylene 2,5-furandicarboxylate)-block-polylactide (PEF-b-PLA) was synthesized to yield a fully biobased copolymer with expected partial miscibility with PLA. The ability of PEF-b-PLA to toughen PLA at 10 wt % (PLA10) and 20 wt % (PLA20) loadings was then evaluated. To understand the achieved properties, the formation of a nanostructured dispersion phase due to favorable interfacial adhesion arising from the miscibility of the PLA block with the PLA matrix was investigated. The morphological features, together with comparable strength inherited from the PEF blocks, afforded an unusual combination of toughness and strength for the PLA blends. Compared to the poor tensile toughness of a pure PLA film (1.77 MJ/m(3)), a striking increase of 839 and 912% was achieved for PLA10 and PLA20, respectively. More importantly, both pure PLA and the blends were characterized by comparable yield strength (similar to 30 MPa). This was accompanied by excellent UV-shielding imparted by the functional groups on the PEF blocks, which would improve the prospects of realizing PLA-based functional packing materials. The proposed design of copolymers, with good industrial feasibility, should be useful to guide the toughening approaches for PLA and probably other degradable polyester blends by profound morphology control.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Kemiteknik -- Polymerteknologi (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Chemical Engineering -- Polymer Technologies (hsv//eng)
Keyword
- polylactide
- biobased blends
- dispersion morphology
- interfacial adhesion
- UV shielding
Publication and Content Type
- ref (subject category)
- art (subject category)
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