Nanocomposites of poly(lactic acid) reinforced with cellulose nanofibrils

By Ping Qu, Yuan Gao, Guofeng Wu, Liping Zhang. BioResources, 2010

200 citations recorded by the source corpus.

A chemo-mechanical method was used to prepare cellulose nanofibrils dispersed uniformly in an organic solvent. Poly(ethylene glycol) (PEG 1000) was added to the matrix as a compatibilizer to improve the interfacial interaction between the hydrophobic poly(lactic acid) (PLA) and the hydrophilic cellulose nanofibrils. obtained by solvent casting methods from N,N-Dimethylacetamide (DMAc) were characterized by tensile testing machine, atomic force microscope (AFM), scanning electron microscope (SEM), and Fourier transform infrared spectroscopy (FT-IR). The tensile test results indicated that, by adding PEG to the PLA and the cellulose nanofibrils matrix, the tensile strength and the elongation rate increased by 56.7% and 60%, respectively, compared with the PLA/cellulose nanofibrils composites. The FT-IR analysis successfully showed that PEG improved the intermolecular interaction, which is based on the existence of inter-molecular hydrogen bonding among PLA, PEG, and cellulose nanofibrils.

Subfields: Biomaterials

View Paper: https://www.semanticscholar.org/paper/9c56dc5ec2e98bd364166f686ebf34632d6bb183

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In Biomaterials

1. David Hui
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Citations in the corpus

• Key Improvements in Interfacial Adhesion and Dispersion of Fibers/Fillers in Polymer Matrix Composites; Focus on PLA Matrix Composites (2021, methodology): “The affinity between fiber and PLA matrix is much improved by the interaction between acyl groups and PLA matrix [157,171].”
• Effects of modifications of bamboo cellulose fibers on the improved mechanical properties of cellulose reinforced poly(lactic acid) composites (2014, background): “Poly (lactic acid) (PLA), made from renewable agricultural raw materials which are fermented to lactic acid, has been considered to be a type of commercially available and fully biodegradable polymers [3–5].”