Rheological, morphological, and interfacial properties of compatibilized PLA/PBAT blends

Al-Itry, Racha; Lamnawar, Khalid; Maazouz, Abderrahim

doi:10.1007/s00397-014-0774-2

Cited by 182 publications

(146 citation statements)

References 58 publications

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“…Specifically, the compatibilization is achieved by the reaction of the epoxy groups in Joncryl ® oligomers and the hydroxyl terminal groups in polyesters (See Figure 3a) leading to chain extension and potential crosslinking. Racha Al-Itry et al [29] reported similar results with a PLA/ PBAT blend with an elongation at break of 50% which was increased up to 135% with the addition of 0.5 wt% Joncryl ® . Addition of 1 wt% of both ECSO and MCSO leads to an increase in elongation at break with values of 70.0 and 60.5% respectively but this increase is not as high as that observed with Joncryl ® .…”

Section: Disintegration In Controlled Compost Soilmentioning

confidence: 69%

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Manufacturing and compatibilization of PLA/PBAT binary blends by cottonseed oil-based derivatives

Carbonell‐Verdu¹,

Ferri²,

Dominici³

et al. 2018

Express Polym. Lett.

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Abstract. This research work aims at the compatibilization of poly(lactic acid)/poly(butylene adipate-co-terephthalate), PLA/PBAT binary blends by using cottonseed oil derivatives, i.e. epoxidized (ECSO) and maleinized (MCSO) cottonseed oil. The potential of these vegetable oil-based compatibilizers are compared versus the effects of a conventional styreneacrylic oligomer. The base PLA/PBAT binary blend composition was 80 wt% PLA/20 wt% PBAT and the amount of compatibilizer was set to 1 and 7.5 wt%. The effects of the different compatibilizers were evaluated on PLA/PBAT films in terms of mechanical and thermal properties as well as blend's morphology by field emission scanning electron microscopy (FESEM). Complementary, biodisintegration tests in controlled compost soil and surface properties were evaluated to assess the effects of the compatibilizers. Addition of 1 wt% ECSO and MCSO led to a remarkable increase in the elongation at break up to values over 100% with regard to neat PLA. Despite this, maximum elongation at break was obtained for the compatibilized PLA/PBAT blend with 7.5 wt% MCSO, reaching values of about 321.2% respect neat PLA keeping mechanical resistant properties, such as Young's modulus and tensile strength, at high levels. Therefore, vegetable oil-derived compatibilizers stand out as environmentally friendly additives for PLA/PBAT binary blends with improved properties.

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Section: Disintegration In Controlled Compost Soilmentioning

confidence: 69%

“…Over 2% TPP, over-crosslinking occurs and properties are not improved. Al-Itry et al [29] studied the effect of Joncryl ADR-4368 (an epoxidized styrene-acrylic oligomer) on PLA/PBAT blends. In fact, they reported a percentage increase in the elongation at break of 900% with regard to neat PLA.…”

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confidence: 99%

Manufacturing and compatibilization of PLA/PBAT binary blends by cottonseed oil-based derivatives

Carbonell‐Verdu¹,

Ferri²,

Dominici³

et al. 2018

Express Polym. Lett.

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“…They did not find a co-continuous phase structure, only a typical sea-island morphology. Another paper that investigated rheological properties of compatibilized PBAT/PLA blends (at 20/80 w/w) is that of Al-Itry et al [32]. Reactive compatibilization was found to give improvement in mechanical properties through chain extension and copolymer formation but not a co-continuous phase morphology.…”

Section: Melt Rheologymentioning

confidence: 99%

Optimising Ductility of Poly(Lactic Acid)/Poly(Butylene Adipate-co-Terephthalate) Blends Through Co-continuous Phase Morphology

et al. 2018

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This paper examines the effect of the melt viscosities of the two component polymers on the morphology and mechanical properties of a series of biodegradable polymer blends. Melt blended compounds of poly(lactic acid) (PLA) and poly(butylene adipate-co-terephthalate) (PBAT) are prepared and their melt viscosities, thermal properties, crystallinity, mechanical properties and phase morphology are investigated. From the relative melt viscosities of PLA and PBAT in the processing regime used in the study, it is possible to calculate the volume fraction at which a co-continuous phase structure is formed. The predicted value is 19 wt% of PBAT and this value is verified by the results of mechanical properties, where results for elongation-to-break show a dramatic rise from around 10% up to 300% in the composition range between 10 and 20 wt% of PBAT. The co-continuous phase structure is also validated by scanning electron microscopy. Graphical AbstractKeywords Poly(lactic acid) · Poly(butylene adipate-co-terephthalate) · Co-continuous phase · Biodegradable · Blends

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“…In particular, two strategies are presented here: (i) modification of PLA through branched architecture with chain-extension reactions to compensate for the molecular weight decrease caused by the processing degradation [7,8] and (ii) blending PLA with other natural or synthetic materials such as Polycaprolacton (PCL), starch, poly (butylene adipate-co-terephtalate) (PBAT), poly(butylene succinate-co-adipate) (PBSA), etc. [9].…”

Section: Introductionmentioning

confidence: 99%

Biopolymer Blends Based on Poly (lactic acid): Shear and Elongation Rheology/Structure/Blowing Process Relationships

2015

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This study was dedicated to the blown film extrusion of poly(lactic acid), which mainly presents poor shear and elongation viscosities, and its blends. In order to enhance its melt strength, two main routes were selected (i) a structural modification through chain extension and branching mechanisms by adding a reactive multifunctional epoxide (named Joncryl) and (ii) blending with poly(butylene adipate-co-terephtalate), named PBAT in presence (or not) of Joncryl. The effects of the reactive agent on the shear and elongation rheology, morphological, and interfacial properties of the blends were systematically investigated. A decrease of the interfacial tension has been also demonstrated according to the deformed drop retraction method (DDRM). Hence, the role of Joncryl as a compatibilizer was highlighted. Consequently, finer morphology of the dispersed phase was obtained. Furthermore, the impact of the two modification routes on the blown film extrusion ability of PLA has been studied. Based on the improved shear and elongational rheological properties, a great enlargement of the blowing processing window of PLA modified with Joncryl was demonstrated. Indeed, with the addition of Joncryl into OPEN ACCESSPolymers 2015, 7 940 PLA-PBAT blends, a reduction of the instability defects has been detected. Finally, the induced crystalline structure and the thermo-mechanical properties of blown films were shown to be improved.

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Rheological, morphological, and interfacial properties of compatibilized PLA/PBAT blends

Cited by 182 publications

References 58 publications

Manufacturing and compatibilization of PLA/PBAT binary blends by cottonseed oil-based derivatives

Manufacturing and compatibilization of PLA/PBAT binary blends by cottonseed oil-based derivatives

Optimising Ductility of Poly(Lactic Acid)/Poly(Butylene Adipate-co-Terephthalate) Blends Through Co-continuous Phase Morphology

Biopolymer Blends Based on Poly (lactic acid): Shear and Elongation Rheology/Structure/Blowing Process Relationships

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