Sulfonated cellulose nanocrystal modified with ammonium salt as reinforcement in poly(lactic acid) composite films
Copyright © 2024 Elsevier B.V. All rights reserved..
Poly(lactic acid) (PLA) composites reinforced with cellulose nanocrystals (CNCs) are promising biodegradable materials. However, the poor compatibility and dispersion of CNCs in the PLA matrix remain a significant obstacle to improving the properties of composites. In this study, the modified CNC (CNC-D) was prepared through sulfonation treatment, followed by modification with didecyl dimethyl ammonium chloride (DDAC). Then, CNC-D was mixed with PLA to prepare composite films (PLA-CNC-D). The results revealed that the PLA-CNC-D had higher tensile strength and elongation at break than PLA-CNC at 3 wt% nanofiller content, increasing by 41.53 and 22.18 %, respectively. SEM and DSC analysis indicated that surface modification improved the compatibility and dispersion of CNC-D in the PLA matrix. The sulfonation process increased the anion content on the surface of CNC-D, enabling the CNC-D surface to adsorb more cationic DDAC, consequently sharply reducing the hydrophilicity of CNC-D. Moreover, the PLA-CNC-D exhibited excellent antibacterial activity against S. aureus and E. coli. In summary, this study provides a novel CNC modification approach to enhance the physical properties and antibacterial activity of PLA composite films, enlarging the application of degradable PLA composites.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2024 |
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| Erschienen: |
2024 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:261 |
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| Enthalten in: |
International journal of biological macromolecules - 261(2024), Pt 1 vom: 24. März, Seite 129673 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Liang, Ganbo [VerfasserIn] |
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| Links: |
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| Anmerkungen: |
Date Completed 11.03.2024 Date Revised 11.03.2024 published: Print-Electronic Citation Status MEDLINE |
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| doi: |
10.1016/j.ijbiomac.2024.129673 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| 520 | |a Poly(lactic acid) (PLA) composites reinforced with cellulose nanocrystals (CNCs) are promising biodegradable materials. However, the poor compatibility and dispersion of CNCs in the PLA matrix remain a significant obstacle to improving the properties of composites. In this study, the modified CNC (CNC-D) was prepared through sulfonation treatment, followed by modification with didecyl dimethyl ammonium chloride (DDAC). Then, CNC-D was mixed with PLA to prepare composite films (PLA-CNC-D). The results revealed that the PLA-CNC-D had higher tensile strength and elongation at break than PLA-CNC at 3 wt% nanofiller content, increasing by 41.53 and 22.18 %, respectively. SEM and DSC analysis indicated that surface modification improved the compatibility and dispersion of CNC-D in the PLA matrix. The sulfonation process increased the anion content on the surface of CNC-D, enabling the CNC-D surface to adsorb more cationic DDAC, consequently sharply reducing the hydrophilicity of CNC-D. Moreover, the PLA-CNC-D exhibited excellent antibacterial activity against S. aureus and E. coli. In summary, this study provides a novel CNC modification approach to enhance the physical properties and antibacterial activity of PLA composite films, enlarging the application of degradable PLA composites | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a Cellulose nanocrystals | |
| 650 | 4 | |a Compatibility and dispersion | |
| 650 | 4 | |a Poly(lactic acid) | |
| 650 | 7 | |a Cellulose |2 NLM | |
| 650 | 7 | |a 9004-34-6 |2 NLM | |
| 650 | 7 | |a poly(lactide) |2 NLM | |
| 650 | 7 | |a 459TN2L5F5 |2 NLM | |
| 650 | 7 | |a N,N-dimethyl-N-hexadecyl-1-octadecylammonium |2 NLM | |
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| 650 | 7 | |a Polymers |2 NLM | |
| 650 | 7 | |a Polyesters |2 NLM | |
| 650 | 7 | |a Anti-Bacterial Agents |2 NLM | |
| 650 | 7 | |a Ammonium Compounds |2 NLM | |
| 650 | 7 | |a Quaternary Ammonium Compounds |2 NLM | |
| 700 | 1 | |a Zong, Yijun |e verfasserin |4 aut | |
| 700 | 1 | |a Zou, Yuyan |e verfasserin |4 aut | |
| 700 | 1 | |a Pang, Xiangchao |e verfasserin |4 aut | |
| 700 | 1 | |a Zeng, Wei |e verfasserin |4 aut | |
| 700 | 1 | |a Zhu, Jianfei |e verfasserin |4 aut | |
| 700 | 1 | |a Yang, Suwen |e verfasserin |4 aut | |
| 700 | 1 | |a Zhu, Yuan |e verfasserin |4 aut | |
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