Thermal, Mechanical and Morphological Properties of Binary and Ternary PLA Blends Containing a Poly(ether ester) Elastomer

Vachon, Andro; Pépin, Keven; Béland, Olivier; Monfette, William Gagné; Rochette, Annie; Vuillaume, Pascal Y.

doi:10.1166/jbmb.2015.1507

Cited by 13 publications

(24 citation statements)

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“…In contrast, the cold crystallization peak of neat PLA and PLA/NF appeared at about 110 and 105 °C, respectively, in the heating scan ( Figure 7 b), due to the low crystallization ability [ 32 ]. As is well known, talc is able to induce the crystallization of PLA [ 12 , 31 , 37 , 40 ]; hence, more talc concentrations added caused more crystallinity of PLA in hybrid composites as seen in Figure 8 . In the case of short-fiber introduction, a slight improvement in crystallinity of the PLA/NF composite compared to that of neat PLA was ddmonstrated.…”

Section: Resultsmentioning

confidence: 90%

Facile Preparation and Characterization of Short-Fiber and Talc Reinforced Poly(Lactic Acid) Hybrid Composite with In Situ Reactive Compatibilizers

et al. 2018

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Hybrid composites of fillers and/or fibers reinforced polymer was generally produced by masterbatch dilution technique. In this work, the simplified preparation was introduced for the large volume production of 30 wt % short-fiber and talcum reinforced polymer hybrid composite by direct feeding into twin-screw extruder. Multifunctional epoxide-based terpolymer and/or maleic anhydride were selected as in situ reactive compatibilizers. The influence of fiber and talcum ratios and in situ reactive compatibilizers on mechanical, dynamic mechanical, morphological and thermal properties of hybrid composites were investigated. The morphological results showed the strong interfacial adhesion between fiber or talcum and Poly(lactic acid) (PLA) matrix due to a better compatibility by reaction of in situ compatibilizer. The reactive PLA hybrid composite showed the higher tensile strength and the elongation at break than non-compatibilized hybrid composite without sacrificing the tensile modulus. Upon increasing the talcum contents, the modulus and storage modulus of hybrid composites were also increased while the tensile strength and elongation at break were slightly decreased compared to PLA/fiber composite. Talcum was able to induce the crystallization of PLA hybrid composites.

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Section: Resultsmentioning

confidence: 90%

Facile Preparation and Characterization of Short-Fiber and Talc Reinforced Poly(Lactic Acid) Hybrid Composite with In Situ Reactive Compatibilizers

et al. 2018

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“…Commonly, polymers functionalized with maleate (nonacrylate [13][14][15][16][17][18][19] ) and glycidyl methacrylate groups (acrylate [20][21][22][23][24][25][26][27][28][29][30] ) are often employed. Additives containing these functionalities can be perfectly combined with PLA, especially if they are constituted by a common skeleton and provide polymer blends with improved ductility and strength.…”

Section: Introductionmentioning

confidence: 99%

Improvements in mechanical strength and thermal stability of injection and compression molded components based on Poly Lactic Acids

et al. 2017

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Degradable polymers are limited by their often-insufficient mechanical and thermal properties, which limit their usage to single-use packaging items at room temperature and in dry conditions. In this respect, the present work deals with the manufacture of custom-built Poly Lactic Acids (PLAs), which are designed to be compostable, suitable for food contact and are characterized by a good compromise between mechanical properties and thermal stability. A commercial grade PLA was, therefore, compounded in a twin-screw co-rotating extruder by the use of specific additives: maleated and glycidyl methacrylate PLAs as compatibilizers/chain extenders and microlamellar talc as mineral filler/nucleation promoter. After pelletizing, the resulting compounds were melt-processed by injection and compression molding.Differential scanning calorimetry, flexural tests in static machine and top-hat cylindrical flat indentations were performed to evaluate the thermal and mechanical response of the molded components. The experimental findings show that crystallization of the PLA can be controlled by fine-tuning the compound formulation as well as by properly setting the processing parameters. In addition, achievement of the appropriate crystallization degree in the polymer can lead to molded components, which exhibit improved mechanical strength and high thermal stability. K E Y W O R D Scompostable polymer, mechanical response, melt processing, molding, thermal stability

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“…Chemical compatibilization of PLA with other polymeric phases obtained by reactive species and intermediates during the so‐called reactive extrusion process strategies constitutes a keystone for ensuring the optimum properties of the resulting blends, in order to guarantee a good transfer of the stresses inside the material under external load. Maleate and glycidyl methacrylate grafted polymers, including nonacrylate and acrylate are rather typical additives employed as reactive intermediates in extrusion compounding processes of PLA, due to their affinity with the polymer matrix. To increase the affinity of the compatibilizing reactive additives with the PLA phase and to limit the use of noncompostable phases in accordance with the regulatory frame, maleate and glycidyl methacrylate grafted PLAs have been developed and previously tested, showing the possibility to effectively tune the properties of the resulting PLA compounds .…”

Section: Introductionmentioning

confidence: 99%

“…Especially for the latter method, the compostability standards can be easily disregarded in the framework of an effective formulating strategy, causing loss of competitiveness of PLA if compared with other durable noncompostable biopolymers. The implementation of PLA formulation by addition of mineral reinforcing fillers , bio‐based polymers , oil‐related polymers , or maleate‐PLA , even modifying the mechanical properties of the material at room and high temperature, was demonstrated to preserve the capability of the PLA phase to undergo decomposition when disposed in the land field.…”

Section: Introductionmentioning

confidence: 99%

Engineered poly(lactic acid)‐talc biocomposites for melt processing: Effects of co‐blending with poly(butylene succinate) and poly(butylene terephthalate) on thermal and mechanical behavior

Barletta

Aversa

Pizzi

et al. 2018

Polymer Engineering & Sci

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This article deals with the design and manufacturing of a novel class of PLA‐based material specifically engineered for injection molding, suitable for food contact and characterized by a good balance of mechanical properties and thermal resistance. A commercial PLA grade was modified by blending it with microlamellar talc as reinforcing filler, poly(butylene succinate) (PBS), and poly(butylene terephthalate) (PBT) as secondary polymeric phases. Ternary blend/talc biocomposites were achieved. The different constituents of the biocomposites were compatibilized by reactive compounding extrusion using maleic anhydride (MAH) grafted PLA (PLA‐MA). The thermal properties of the compounds prior and after injection molding were characterized by differential scanning calorimetry. The mechanical response of the injection molded materials was evaluated by flat indentation and flexural tests. The mechanical properties of the PLA/talc‐based biocomposites and crystallinity of PLA can be controlled by fine tuning the blend by the addition of PBS and PBT in the formulation. In particular, biocomposites characterized by good strength and toughness can be obtained by injection molding, without affecting thermal stability. Based on the experimental findings, the PLA‐based formulations pose; therefore, solid bases for replacing oil‐based plastics in several markets, specifically in the segment of food and pharmaceutical packaging. POLYM. ENG. SCI., 59:264–273, 2019. © 2018 Society of Plastics Engineers

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Thermal, Mechanical and Morphological Properties of Binary and Ternary PLA Blends Containing a Poly(ether ester) Elastomer

Cited by 13 publications

References 0 publications

Facile Preparation and Characterization of Short-Fiber and Talc Reinforced Poly(Lactic Acid) Hybrid Composite with In Situ Reactive Compatibilizers

Facile Preparation and Characterization of Short-Fiber and Talc Reinforced Poly(Lactic Acid) Hybrid Composite with In Situ Reactive Compatibilizers

Improvements in mechanical strength and thermal stability of injection and compression molded components based on Poly Lactic Acids

Engineered poly(lactic acid)‐talc biocomposites for melt processing: Effects of co‐blending with poly(butylene succinate) and poly(butylene terephthalate) on thermal and mechanical behavior

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