Synergistically enhanced toughness and water vapour barrier performance of polylactic acid by graphene oxide/acetylated lignin composite

Li, Xiaobao; Yu, Haojie; Ding, Jingyuan; Shen, Liming; Zhao, Xuejuan

doi:10.1016/j.matlet.2022.131829

Cited by 9 publications

(2 citation statements)

References 13 publications

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“…to endow the PLA-based composites with multi-functional properties. 23,24 For instance, Cao et al grafted polyhedral oligomeric silsesquioxane (POSS) containing an epoxy substituent onto the lignin structure, and the POSS-modified lignin (lignin-POSS) was later applied for the PLA-based composite films by melt compounding. In addition to the achievement of good compatibility between reinforcing filler and PLA matrix at low content of lignin-POSS, the synergistic effect between two film components imparted the film product with enhanced UV-shielding capacity and meanwhile maintained good transmittance of visible lights.…”

Section: Introductionmentioning

confidence: 99%

Chemical combination of nano‐silica and alkaline lignin for property enhancement of polylactic acid‐based composite films

Gong

et al. 2023

J of Applied Polymer Sci

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As a key byproduct from alkaline pulping industry, alkaline lignin (AL) exhibits tremendous potentials for the development of high-value-added biomaterials, ascribed to its renewability and unique polymeric structure. In this study, the alkaline lignin was first oxidized and then modified with aminated nano-silica. After further hydrophobic modification with a silane coupling agent, a novel lignin-based filler was finally prepared and applied for property enhancement of PLA-based composite films. As revealed from SEM results that, a uniformed state of filler distribution could be achieved if the filler content is no more than 1%. Under this condition, the thermal stability of composite film could be effectively improved, as well as the enhancement of tensile strength (50.7 MPa) and Young's modulus (2847 MPa). Notably, the composite films also exhibit selective resistance against UV lights rather than visible lights, especially at higher filler content.

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Section: Introductionmentioning

confidence: 99%

Chemical combination of nano‐silica and alkaline lignin for property enhancement of polylactic acid‐based composite films

Gong

et al. 2023

J of Applied Polymer Sci

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“…Incorporation of nanoparticles is currently one of the most effective strategies to enhance the performance of PLA. For example, carbon nanotubes, 7 nano‐clay, 8 graphene oxide (GO), 9 and nanocellulose 10 have been used as nanofillers to improve the PLA‐related properties. Among the various nano‐fillers, cellulose nanocrystals (CNCs) are considered the most potential green ones due to their nontoxicity, degradability, and biocompatibility.…”

Section: Introductionmentioning

confidence: 99%

Simultaneous enhancement of the strength and the roughness of poly(lactic acid) using palmitoylated cellulose nanocrystal

et al. 2023

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The nanocomposite films from poly(lactic acid) (PLA) and palmitoylated cellulose nanocrystals (e‐CNCs) were characterized using different techniques. Raman spectra showed the formation of hydrogen bonding interactions between the PLA and the e‐CNCs. The proper amount (1.0 wt%) of the e‐CNCs led to the formation of greater amounts of smaller PLA spherulites and increased the PLA crystallinity in comparison with the neat PLA sample. The scanning and transmission electron microscopy images showed that 1.0 wt% of the e‐CNCs could uniformly be dispersed in the PLA matrix and that the nanocomposite exhibited some elasticity. The dynamic rheological properties showed the formation of interconnected networks in the PLA/e‐CNCs composite at 1.0 wt% of the e‐CNCs. The analysis of the mechanical performance of the ensuing nanocomposite showed a 74% increase in tensile strength, a 62.1% increase in Young's modulus, and a 68.4% increase in the elongation at the break after the incorporation of 1.0 wt% of the e‐CNCs into the PLA. Therefore, the palmitoylated CNCs were highly promising for the simultaneous enhancement in the strength and the toughness of PLA.Highlights Reinforcement of poly(lactic acid) (PLA) by the palmitoylated CNCs. Simultaneous improvement in the strength and roughness of PLA sample. Entanglement and H‐bond between the palmitoylated CNCs and PLA molecular chain. More and smaller PLA crystals induced by the palmitoylated CNCs.

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Lignin-based anti-UV functional materials: recent advances in preparation and application

Lv,

Liang,

Zuo

et al. 2023

Iran Polym J

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Synergistically enhanced toughness and water vapour barrier performance of polylactic acid by graphene oxide/acetylated lignin composite

Cited by 9 publications

References 13 publications

Chemical combination of nano‐silica and alkaline lignin for property enhancement of polylactic acid‐based composite films

Chemical combination of nano‐silica and alkaline lignin for property enhancement of polylactic acid‐based composite films

Simultaneous enhancement of the strength and the roughness of poly(lactic acid) using palmitoylated cellulose nanocrystal

Lignin-based anti-UV functional materials: recent advances in preparation and application

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