Bio-based poly(lactic acid) foams with enhanced mechanical and heat-resistant properties obtained by facilitating stereocomplex crystallization with addition of D-sorbitol
Copyright © 2024 Elsevier B.V. All rights reserved..
The preparation of bio-based poly(lactic acid) (PLA) foams with high mechanical properties and heat resistance is of great significance for environmental protection and green sustainable development. In this paper, D-sorbitol (DS) containing six hydroxyl groups was introduced into poly(l-lactide) (PLLA)/poly(d-lactide) (PDLA) blends for first time to promote the formation of stereocomplex (SC) crystals, which could improve the foaming behavior and enhance mechanical properties and heat resistance of PLA foams. The results showed that DS could improve the formation efficiency and crystallinity of SC crystals by enhancing the hydrogen bonding between the enantiomeric molecular chains. Furthermore, the compression modulus and interactions Vicat softening temperature of the PLLA/PDLA/DS blend foam increased about 854% and 16% compared to the pure PLLA foam, respectively. Besides, when the annealing process was introduced, the compression and heat resistance of the PLA foams increased further. This study provided a feasible strategy for the preparation of bio-based and biodegradable PLA foams with outstanding compressive and heat resistance properties.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2024 |
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| Erschienen: |
2024 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:265 |
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| Enthalten in: |
International journal of biological macromolecules - 265(2024), Pt 1 vom: 20. Apr., Seite 130902 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Wang, Yao [VerfasserIn] |
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| Links: |
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| Themen: |
459TN2L5F5 |
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| Anmerkungen: |
Date Completed 17.04.2024 Date Revised 17.04.2024 published: Print-Electronic Citation Status MEDLINE |
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| doi: |
10.1016/j.ijbiomac.2024.130902 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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NLM36982377X |
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| 245 | 1 | 0 | |a Bio-based poly(lactic acid) foams with enhanced mechanical and heat-resistant properties obtained by facilitating stereocomplex crystallization with addition of D-sorbitol |
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| 500 | |a Date Revised 17.04.2024 | ||
| 500 | |a published: Print-Electronic | ||
| 500 | |a Citation Status MEDLINE | ||
| 520 | |a Copyright © 2024 Elsevier B.V. All rights reserved. | ||
| 520 | |a The preparation of bio-based poly(lactic acid) (PLA) foams with high mechanical properties and heat resistance is of great significance for environmental protection and green sustainable development. In this paper, D-sorbitol (DS) containing six hydroxyl groups was introduced into poly(l-lactide) (PLLA)/poly(d-lactide) (PDLA) blends for first time to promote the formation of stereocomplex (SC) crystals, which could improve the foaming behavior and enhance mechanical properties and heat resistance of PLA foams. The results showed that DS could improve the formation efficiency and crystallinity of SC crystals by enhancing the hydrogen bonding between the enantiomeric molecular chains. Furthermore, the compression modulus and interactions Vicat softening temperature of the PLLA/PDLA/DS blend foam increased about 854% and 16% compared to the pure PLLA foam, respectively. Besides, when the annealing process was introduced, the compression and heat resistance of the PLA foams increased further. This study provided a feasible strategy for the preparation of bio-based and biodegradable PLA foams with outstanding compressive and heat resistance properties | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a Compressive performance | |
| 650 | 4 | |a D-sorbitol | |
| 650 | 4 | |a Heat resistance | |
| 650 | 4 | |a Poly(lactic acid) foam | |
| 650 | 4 | |a Stereocomplex crystal | |
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| 700 | 1 | |a Zou, Fangfang |e verfasserin |4 aut | |
| 700 | 1 | |a Lin, Meijiang |e verfasserin |4 aut | |
| 700 | 1 | |a Xing, Shaowei |e verfasserin |4 aut | |
| 700 | 1 | |a Peng, Qianyun |e verfasserin |4 aut | |
| 700 | 1 | |a Li, Guangxian |e verfasserin |4 aut | |
| 700 | 1 | |a Liao, Xia |e verfasserin |4 aut | |
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