Integrating Fly Ash-Controlled Surface Morphology and Candle Grease Coating: Access to Highly Hydrophobic Poly (L-lactic Acid) Composite for Anti-Icing Application

New ways of recycling fly ash are of great significance for reducing the environmental pollution. In this work, biodegradable hydrophobic poly (L-lactic acid)/fly ash composites for anti-icing application were successfully fabricated via a facile solvent-volatilization-induced phase separation appro...

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Bibliographic Details
Published in:Nanomaterials (Basel, Switzerland) Switzerland), 2023-03, Vol.13 (7), p.1230
Main Authors: Jiang, Zhiqiang, Xue, Bai, Mai, Xiaoping, Wu, Changmei, Zeng, Lingjun, Xie, Lan, Zheng, Qiang
Format: Article
Language:English
Subjects:
Acids
Analysis
Biodegradation
Bonding strength
candle grease
Candles
Composite materials
Contact angle
Control surfaces
Controllability
Coupling agents
Deicing
Ethanol
Fly ash
Gas absorption
Grease
Greases
Hydrophobic surfaces
Hydrophobicity
Lactic acid
Mechanical properties
Methods
Microspheres
Morphology
Nanoparticles
petal-like microsphere
Phase separation
Polylactic acid
Polymers
Porous materials
Recycling
Separation (Technology)
Solid phases
Solvents
Structure
Volatilization
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Summary:New ways of recycling fly ash are of great significance for reducing the environmental pollution. In this work, biodegradable hydrophobic poly (L-lactic acid)/fly ash composites for anti-icing application were successfully fabricated via a facile solvent-volatilization-induced phase separation approach. A silane coupling agent of 3-(Trimethoxysilyl) propyl methacrylate was used to decorate a fly ash surface (FA@KH570) for strengthening the interface bonding between fly ash and poly (L-lactic acid). Moreover, FA@KH570 could obviously enhance the crystallinity of poly (L-lactic acid) (PLLA)/FA@KH570 composites, which accelerated the conversion from the liquid-liquid to the liquid-solid phase separation principle. Correspondingly, the controllable surface morphology from smooth to petal-like microspheres was attained simply by adjusting the FA@KH570 content. After coating nontoxic candle grease, the apparent contact angle of 5 wt% PLLA/FA@KH570 composite was significantly increased to an astonishing 151.2°, which endowed the composite with excellent anti-icing property. This strategy paves the way for recycling waste fly ash and manufacturing hydrophobic poly (L-lactic acid) composite for potential application as an anti-icing material for refrigerator interior walls.
ISSN:2079-4991
2079-4991
DOI:10.3390/nano13071230