Influence of chain extender on mechanical, thermal and morphological properties of blown films of PLA/PBAT blends

Arruda, Liliane Cardoso; Magaton, Marina; Bretas, Rosário Elida Suman; Ueki, Marcelo Massayoshi

doi:10.1016/j.polymertesting.2015.02.005

Cited by 314 publications

(196 citation statements)

References 25 publications

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“…Simultaneously, the tube is cooled outside of the die via air‐ring and blown inside with compressed air leading to a stable polymer bubble. The thickness, diameter, and performances of films are associated with the feeding speed, the blow‐up ratio, and the taken up speed/ratio …”

Section: Introductionsupporting

confidence: 77%

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The morphological, mechanical, rheological, and thermal properties of PLA/PBAT blown films with chain extender

Pan

et al. 2018

Polymers for Advanced Techs

101

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Biodegradable poly(lactic acid) (PLA)/poly(butylene adipate‐co‐terephthalate) (PBAT) blends and films were prepared using melt blending and blowing films technique in the presence of chain extender‐Joncryl ADR 4370F. The ADR contains epoxy functional groups and used as a compatibilizer. The morphological, mechanical, rheological, thermal, and crystalline properties of the PLA/PBAT/ADR blown films were studied. Scanning electron microscopy micrographs of the films revealed more ductile deformation with increasing PBAT content. The addition of PBAT enhanced the toughness of the PLA film. Tensile tests indicated that the elongation at break increased from 20.5% to 334.6% in the machine direction and from 7.1% to 715.9% in the transverse direction. The Young modulus increased from 2690.5 to 395.6 MPa in the machine direction and from 2623.5 to 154.0 MPa in the transverse direction. The sealing strength of 40/60/0.15 PLA/PBAT/ADR film was the highest among all the samples up to 9.4 N 15 mm−1. These findings gave important implications for designing and manufacturing polymer packaging materials.

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Section: Introductionsupporting

confidence: 77%

“…The incorporation of the PBAT promoted the migration of the chain and nucleation. For the PLA/PBAT/ADR films, there was an overlap between the PLA cold‐crystallization region and the PBAT melting region . Therefore, the cold crystallization region of PLA was disappeared with increasing PBAT content up to 80 wt%.…”

Section: Resultsmentioning

confidence: 99%

The morphological, mechanical, rheological, and thermal properties of PLA/PBAT blown films with chain extender

Pan

et al. 2018

Polymers for Advanced Techs

101

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“…Significant modification of molecular weight distribution led to improvement of melt strength, thermal stability and crystallizability of PLA/ PBSA blends comparing to neat PLA. These observations corresponded with the results presented by Arruda et al [107] who studied PLA/PBAT blends compatibilized by chain extender Joncryl ® (BASF). Recently, Schneider et al [108] used epoxy functionalized-PLA (EF-PLA) as reactive modifier for PLA/PBAT blends.…”

Section: Aliphatic Polyesters Blendssupporting

confidence: 92%

Reactive extrusion of bio-based polymer blends and composites – Current trends and future developments

Formela¹,

Zedler²,

Hejna³

et al. 2018

Express Polym. Lett.

108

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Abstract.Reactive extrusion is a cost-effective and environmentally-friendly method to produce new materials with enhanced performance properties. At present, reactive extrusion allows in-situ polymerization, modification/functionalization of polymers or chemical bonding of two (or more) immiscible phases, which can be carried out on commonly used extrusion lines. Although reactive extrusion has been known for many years, its application for processing of bio-based polymer blends and composites is a relatively new direction of scientific research. This work presents a literature review on recent advances in the processing of bio-based polymer blends and composites via reactive extrusion. We described compatibilization mechanisms for different types of biodegradable polymeric materials based on: (i) aliphatic polyesters, (ii) aliphatic polyesters/starch and (iii) aliphatic polyester/natural rubber systems. A special attention was focused on conventional and dynamic cross-linking of bio-based polymer blends and composites as an effective way to prepare new materials with unique properties e.g. biodegradable thermoplastic elastomers or shape-memory materials. Advantages and limitations affecting future trends in development of biodegradable polymer blends and composites reactive extrusion are also discussed.

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“…Previous researchers have found that poly(lactic acid), a thermoplastic biopolymer material, is an ideal replacement of petroleum-based plastics in extensive applications, thus mitigating solid waste disposal and lightening the dependence on petroleum resources (Zhang et al 2009a). PLA has several advantages among others bioplastics such as being fully biodegradable, biocompatible, and produced from renewable resources (Arruda et al 2015). As a photosynthetically renewable resource, PLA does not generate much net CO2 emissions in its manufacturing process (Dorgan et al 2001).…”

Section: Introductionmentioning

confidence: 99%

Physical and Degradation Properties of Polylactic Acid and Thermoplastic Starch Blends – Effect of Citric Acid Treatment on Starch Structures

Ibrahim¹,

Wahab²,

Uylan³

et al. 2017

BioResources

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The physical and degradation properties of polylactic (PLA)/thermoplastic starch (TPS) blends after TPS modification with citric acid (CA) were investigated. The interfacial adhesion between the PLA and TPS was expected to improve, thus enhancing the physical properties of the PLA/TPS blends. The tensile strength and Young's modulus for PLA/TPS blends at (60/40) and (40/60) blends ratio were found to increase after modification with CA. On the other hand, the elongation at break of the (60/40) blend decreased, while elongation at break of the (40/60) blend increased. Meanwhile, an additional peak at 1721 cm -1 was detected by the FTIR spectroscopic analysis, which indicated that the TPS had chemically interacted with the CA. The biodegradability properties of PLA/TPS blends were also improved after treatment with CA. The deterioration of PLA/TPS blends was attributed to the incorporation of CA; O2 from the soil was attracted to the PLA/TPS blends, thus speeding up the degradation process of the blends.

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Influence of chain extender on mechanical, thermal and morphological properties of blown films of PLA/PBAT blends

Cited by 314 publications

References 25 publications

The morphological, mechanical, rheological, and thermal properties of PLA/PBAT blown films with chain extender

The morphological, mechanical, rheological, and thermal properties of PLA/PBAT blown films with chain extender

Reactive extrusion of bio-based polymer blends and composites – Current trends and future developments

Physical and Degradation Properties of Polylactic Acid and Thermoplastic Starch Blends – Effect of Citric Acid Treatment on Starch Structures

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