Nanoparticle Interactions and Molecular Relaxation in PLA/PBAT/Nanoclay Blends

Nofar, Mohammadreza; Heuzey, Marie‐Claude; Carreau, Pierre J.; Kamal, Musa R.

doi:10.1017/exp.2020.54

Cited by 18 publications

(14 citation statements)

References 35 publications

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“…Processes of PLA melt blending and molding require high operating temperatures above the polymer melting point (up to 200°C) and/or high pressures 16,19,22,24,39,56–68 . After being melted, PLA is shaped into the desired form by molding (with or without a mechanical press) and cooled down to stabilize its dimensions 23 …”

Section: Methods For Pla Processingmentioning

confidence: 99%

“…Functional properties of PLA materials can be further improved by development of ternary blends 8,22,57,58,60,63,66,67,77,124,159,167 . Klinkajorn & Tanrattanakul 62 added maleic anhydride (0.3–0.6 wt%) to blend of PLA 3 and rubber and improved material mechanical properties (tensile strength from 8 to 24 MPa).…”

Section: Effect Of Process Variables On Pla‐based Materialsmentioning

confidence: 99%

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Tailoring of advanced poly(lactic acid)‐based materials: A review

Milovanović

Pajnik

Lukić

2021

J of Applied Polymer Sci

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Poly(lactic acid) (PLA) stands out as the most promising biodegradable alternative to conventional petrochemical‐based polymers for manufacturing of high‐performance materials applied in medicine, pharmacy, food, textile, and electronic industry. This review was aimed to present the conventional and up‐to‐date technologies for PLA processing including melt blending and molding, hot melt extrusion, 3D printing, foaming, impregnation, thermally induced phase separation, nano‐ and microparticles preparation, wet and dry spinning processes. In addition, the effect of the processing parameters and polymer characteristics on the properties of the final material was elaborated. Diverse possibilities to tailor properties of PLA‐based materials by variation in polymer characteristics and concentration, solvent selection, drying method, processing pressure and temperature, incorporation of bioactive components, and so on were highlighted. The examples of the relations between processing methods, parameters, and end‐product properties are given for a better understanding of all aspects that need to be perceived for fabrication of PLA‐based materials with required performances.

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Section: Methods For Pla Processingmentioning

confidence: 99%

Section: Effect Of Process Variables On Pla‐based Materialsmentioning

confidence: 99%

Tailoring of advanced poly(lactic acid)‐based materials: A review

Milovanović

Pajnik

Lukić

2021

J of Applied Polymer Sci

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“…Blending with other polymers has been; however, considered as a practical cost‐effective approach to tailor the properties of PLA 25 . PLA could be blended with other polymers that have high toughness and ductility 26–28 while its melt properties and hence processability could also be improved 29–36 . In this context, thermoplastic polyurethane (TPU) with high ductility, toughness, and impact strength could be considered as an appropriate candidate to be blended with PLA as, due to its biocompatibility, the developed blend could also be used in biomedical applications 25 …”

Section: Introductionmentioning

confidence: 99%

Super toughened and highly ductile PLA/TPU blend systems by in situ reactive interfacial compatibilization using multifunctional epoxy‐based chain extender

Kahraman

Özdemir

Kılıç

et al. 2021

J of Applied Polymer Sci

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This study investigates the influence of using multifunctional epoxy Joncryl ADR 4468 chain extender (CE) on the properties of various polylactide (PLA)/thermoplastic polyurethane (TPU) (75 wt/25 wt) blend systems. The blends were based on two different TPU grades with ether‐ and ester‐based soft segment as the dispersed phase (i.e., TPUether and TPUester) and an amorphous and a semicrystalline PLA grades as the matrix (i.e., aPLA and scPLA). PLA appeared to be more compatible with the TPUester, which caused the enhancement of the impact strength and strain at break values of the blends more remarkably. The dynamic rheological experiments also confirmed that the CE revealed a better reactivity with TPUester than TPUether. This further enhanced the interfacial compatibility between the PLA and TPUester and thereby dramatically improved the impact strength and ductility of the PLA/TPUester blends, specifically those with 0.5 wt% CE. Meanwhile, aPLA as the matrix reflected the TPUs toughening effect more efficiently than scPLA. This was due to the possible shrinkage caused by the crystallization of scPLA matrix, which could deteriorate the interfacial interactions between the phases in the corresponding blends.

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“…Different localizations have been investigated through the incorporation of different nanoparticles in PLA/PBAT blends such as nano-silica [ 13 , 16 ], carbon nanotube [ 12 , 17 , 18 ], graphene [ 19 , 20 ], and nano-clay [ 19 , 21 , 22 , 23 , 24 ]. Jalali Dil et al [ 16 ] investigated the droplet/matrix and co-continuous morphology of PLA/PBAT (70/30 and 50/50, respectively) in the presence of nano-silica.…”

Section: Introductionmentioning

confidence: 99%

Morphological and Rheological Properties of PLA, PBAT, and PLA/PBAT Blend Nanocomposites Containing CNCs

et al. 2021

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Morphological and rheological properties of poly(lactic acid), PLA (semicrystalline and amorphous), and poly(butylene adipate-co-terephthalate), PBAT, and their blends (75 wt%/25 wt%; PLA/PBAT) were investigated in the presence of cellulose nanocrystals (CNCs) prepared from solution casting followed by melt mixing. For the solution casting step, the CNCs were either incorporated into the matrix, the dispersed phase, or both. The dispersion and distribution of the CNCs in the neat polymers and localization in their blends were analyzed via scanning electron microscopy (SEM) and atomic force microscopy (AFM). The highly dispersed CNCs in the solution cast nanocomposites were agglomerated after melt mixing. In the blends with 1 wt% CNCs, the nanoparticles were mostly localized on the surface of the PBAT droplets irrespective of their initial localization. The rheological behavior of the single polymer matrix nanocomposites and their blends was determined in dynamic and transient shear flow in the molten state. Upon melt mixing the complex viscosity and storage modulus of the solution cast nanocomposites decreased markedly due to re-agglomeration of the CNCs. Under shearing at 0.1 s−1, a significant droplet coalescence was observed in the neat blends, but was prevented by the presence of the CNCs at the interface in the blend nanocomposites.

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Nanoparticle Interactions and Molecular Relaxation in PLA/PBAT/Nanoclay Blends

Cited by 18 publications

References 35 publications

Tailoring of advanced poly(lactic acid)‐based materials: A review

Tailoring of advanced poly(lactic acid)‐based materials: A review

Super toughened and highly ductile PLA/TPU blend systems by in situ reactive interfacial compatibilization using multifunctional epoxy‐based chain extender

Morphological and Rheological Properties of PLA, PBAT, and PLA/PBAT Blend Nanocomposites Containing CNCs

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