Bio-based composite of stereocomplex polylactide and cellulose nanowhiskers

Purnama, Purba; Kim, Jeongrae

doi:10.1016/j.polymdegradstab.2014.01.004

Cited by 32 publications

(36 citation statements)

References 33 publications

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“…The morphology of polymer is, in fact, determined by its crystallization process that in turn, forms the established material structure‐property behavior 38 . Hence, the potential of nanoparticles in enhancing the properties of polymers to form high‐performance nanocomposites continue to draw researchers and industrial attention 32,63 . The introduction of nanoparticles in neat polymer matrices permit short distance between nano‐sized particles, more interfacial area per particle volume, low percolation threshold, and improve the crystallization rate 64 .…”

Section: Poly(lactic Acid)‐based Nanocomposites: Rigid Nanofillersmentioning

confidence: 99%

Effect of rigid nanoparticles and preparation techniques on the performances of poly(lactic acid) nanocomposites: A review

Sanusi

Benelfellah

Bikiaris

et al. 2020

Polymers for Advanced Techs

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The global concern over the environmental protection and bio‐sustainability of plastic waste materials has prompted a vibrant search for renewable and biodegradable polymers in the academia and industrial sectors. Amidst other biopolymers, poly(lactic acid) (PLA) is identified as the most promising thermoplastic aliphatic polyester. PLA is derived from agricultural products with unique physical and mechanical properties that are comparable with the conventional petroleum‐derived polymers. Yet, some of the properties are insufficient for advanced materials applications. Rigid nanoparticles are incorporated in the PLA matrix to alleviate its properties for specific high‐performance applications. Here, we report various approaches of preparing functional PLA nanocomposites with emphasis on the strengths and weaknesses of each of the methods, as well as the achieved properties enhancement for a targeted application. Designing high‐performance PLA nanocomposite involves careful selection of the most appropriate nanofillers or combinations of nanofillers, preparation technique and processing parameters. Besides multi‐walled carbon nanotubes (CNT) and montmorillonite (MMT) that are prominent as nucleating agents to achieve high thermal and mechanical properties, other nanofillers like silver nanoparticles (AgNP) play critical roles in improving antibacterial and high‐performance properties of PLA.

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Section: Poly(lactic Acid)‐based Nanocomposites: Rigid Nanofillersmentioning

confidence: 99%

Effect of rigid nanoparticles and preparation techniques on the performances of poly(lactic acid) nanocomposites: A review

Sanusi

Benelfellah

Bikiaris

et al. 2020

Polymers for Advanced Techs

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“… 17 to synthesize scPLA using supercritical fluids. Synthesis of stereoblock PLA, sintering and compression of enantiomeric PLA 18 , ternary stereocomplex formation via configurational molecular glue 19 or use of fillers 20 or biofillers, such as cellulose nano/micro crystals 21 , 22 , clays 23 , chitosan, hydroxyapatite 24 etc. into the matrix of scPLA can be the possible routes for preventing the formation of homocrystals.…”

Section: Introductionmentioning

confidence: 99%

Effects of Amphiphilic Chitosan on Stereocomplexation and Properties of Poly(lactic acid) Nano-biocomposite

Gupta

Pal

Woo

et al. 2018

Sci Rep

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This article demonstrates an elegant approach for the fabrication of high heat-stable PLA using an industrially viable technique i.e. melt extrusion, which is quite challenging due to the higher viscosity of poly(lactic acid) melt. scPLA has been fabricated by melt extrusion of PLLA/PDLA using nano-amphiphilic chitosan (modified chitosan, MCH) which has been synthesized by grafting chitosan with oligomeric PLA via insitu polycondensation of L-lactic acid that possibly increases the molecular surface area and transforms it into nano-amphiphilic morphology and in turn lead to the formation of stereocomplex crystallites. The effect of MCH loading on the structural, morphological, mechanical and thermal properties of PLLA/PDLA have been investigated. The modification of chitosan and formation of stereocomplexation in PLA has been confirmed by FTIR and XRD techniques, respectively. Heat treatment has also laid a significant effect on the stereocomplexation and the degree of crystallinity of stereocomplex crystallites has been increased to ~70% for 1.5 wt % MCH content with the absence of homocrystals. The heat deflection temperature is found to be more than 140 °C for the biocomposite with 1.5% MCH in comparison to ~70 °C for pristine scPLA. The biocomposites display significant improvement in UTS and Young’s modulus.

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“…Figure (B) presents the XRD spectra of PLLA, COS/PLLA‐25, COS/PLLA‐50, and COS. Clearly, the XRD spectra of PLLA showed three obvious diffraction peaks located at 2θ = 16.5°, 18.9°, and 22.3°, corresponding to the α‐crystallographic plane diffractions of PLLA . However, the XRD spectra of COS power trace presented a broad peak at around 2θ = 22.1°, indicating that COS was the amorphous material.…”

Section: Resultsmentioning

confidence: 97%

Improvement of surface hydrophilicity, water uptake, biodegradability, and cytocompatibility through the incorporation of chitosan oligosaccharide into poly(l‐lactide)

Wang

Wei

Chen

et al. 2017

J of Applied Polymer Sci

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Poly(L-lactide) (PLLA)-based biocomposites incorporated with different amounts of chitosan oligosaccharide (COS) were developed through solvent-casting method. Then, the physical-chemical properties, surface morphology, hydrophilicity, water uptake, biodegradability, and biocompatibility of the COS/PLLA composites were investigated. Fourier transform infrared and X-ray diffraction results showed that strong hydrogen-bonding interactions were presented between the COS and PLLA components. Scanning electron microscope and atomic force microscope images revealed that COS physically attached on the PLLA surface enhanced the formation of the surface seepage network, which led to the improvement of the surface biological features. A gradual rise in the level of hydrophilicity, water uptake, and degradation rate in phosphate buffered saline solution were found on increasing COS content in the COS/PLLA composites, which may provide effective support for cell adhesion and proliferation. Further, the results of cell experiments also suggested that the COS/PLLA composites had better cytocompatibility compared with PLLA. Thus, the COS/PLLA composites may have the great potential to be used for soft and bone tissue repair.

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Bio-based composite of stereocomplex polylactide and cellulose nanowhiskers

Cited by 32 publications

References 33 publications

Effect of rigid nanoparticles and preparation techniques on the performances of poly(lactic acid) nanocomposites: A review

Effect of rigid nanoparticles and preparation techniques on the performances of poly(lactic acid) nanocomposites: A review

Effects of Amphiphilic Chitosan on Stereocomplexation and Properties of Poly(lactic acid) Nano-biocomposite

Improvement of surface hydrophilicity, water uptake, biodegradability, and cytocompatibility through the incorporation of chitosan oligosaccharide into poly(l‐lactide)

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