Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/75703
Title: Efficient ZnO aqueous nanoparticle catalysed lactide synthesis for poly(lactic acid) fibre production from food waste
Authors: Hu, YZ
Daoud, WA
Fei, B 
Chen, L
Kwan, TH
Lin, CSK
Keywords: Lactide synthesis
Zinc oxide nanoparticle
Ring-opening polymerization
Poly(lactic acid)
Food waste
Issue Date: 2017
Publisher: Elsevier
Source: Journal of cleaner production, 2017, v. 165, p. 157-167 How to cite?
Journal: Journal of cleaner production 
Abstract: This study demonstrates the feasibility of poly(lactic acid) fibre production using fermentative lactic acid from food waste. Poly(lactic acid) was synthesized through ring-opening polymerization, in which the precursor lactide was produced by a novel catalytic method. Zinc oxide aqueous nanoparticle (30 - 40 nm) dispersion was applied as efficient catalyst due to its large surface area and rapid equilibrium between polymerization and depolymerization. Under optimal reaction conditions, lactide was produced at yields of 91-92% within 8 h, significantly improving the synthesis efficiency compared to the conventional tin-based catalytic method. The pure lactide product facilitated the conversion of food waste derived lactic acid to high molecular weight poly(lactic acid) (150,000 g mol(-1)), which was subsequently spun to fibres with promising tensile and thermal properties for potential applications in textile and bioplastics.
URI: http://hdl.handle.net/10397/75703
ISSN: 0959-6526
EISSN: 1879-1786
DOI: 10.1016/j.jclepro.2017.07.067
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