Effect of the simultaneous biaxial stretching on the structural and mechanical properties of PLA, PBAT and their blends at rubbery state

Al-Itry, Racha; Lamnawar, Khalid; Maazouz, Abderrahim; Billon, Noëlle; Combeaud, Christelle

doi:10.1016/j.eurpolymj.2015.05.001

Cited by 97 publications

(65 citation statements)

References 29 publications

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“…The PBAT film presents a glass transition temperature ( g ) of around −33.31 ∘ C. Similar results were obtained by other authors [34,45,46]. The DSC curves had two additional peaks related to melting temperatures, m1 and m2 , 53 ∘ C and 130 ∘ C, respectively [47]. These two endothermic events are related to the two segments that make up the chemical structure of PBAT, which are butylene terephthalate (BT) and butylene adipate (BA) segment.…”

Section: Differential Scanning Calorimeter (Dsc)supporting

confidence: 87%

PBAT/TPS Composite Films Reinforced with Starch Nanoparticles Produced by Ultrasound

Silva

Correia

Druzian

et al. 2017

International Journal of Polymer Science

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The objective of the present work was to study the incorporation of starch nanoparticles (SNP) produced by ultrasound in blends of poly(butylene adipate-co-terephthalate) (PBAT) and thermoplastic starch (TPS). The films were produced by extrusion using varying percentages of SNP (1, 2, 3, 4, and 5% w/w). The SNP were prepared in water without the addition of any chemical reagent. The results revealed that ultrasound treatment results in the formation of SNP less than 100 nm in size and of an amorphous character and lower thermal stability and low gelatinization temperature when compared with cassava starch. Scanning electron microscopy (SEM) showed that films presented some starch granules. The relative crystallinity (RC) of films decreases with increasing concentration of SNP. The addition of SNP slightly affected the thermal degradation of the films. The DSC results showed that the addition did not modify the interaction between the different components of the films. Mechanical tests revealed an increase in Young's modulus (36%) and elongation-at-break (35%) with the incorporation of 1% SNP and this concentration reduced the water vapor permeability (53%) and significantly decreased the water absorption of the films, demonstrating that low concentrations of SNP can be used as reinforcement in a polymeric matrix.

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Section: Differential Scanning Calorimeter (Dsc)supporting

confidence: 87%

PBAT/TPS Composite Films Reinforced with Starch Nanoparticles Produced by Ultrasound

Silva

Correia

Druzian

et al. 2017

International Journal of Polymer Science

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“…All the samples presented different behaviors from the first to the second heating ramp, indicating that the processing influences the morphology of the composites. The samples presented the PBAT glass transition ( T g ) value near to −30 °C and the PLA T g around 60 °C, which are their usual values, as showed by Al‐Itry et al . The samples presented a T g endothermic overshoot at the first heating process (Figure ).…”

Section: Resultssupporting

confidence: 64%

A new approach for flexible PBAT/PLA/CaCO₃ films into agriculture

Rocha

Carvalho

Oliveira

et al. 2018

J of Applied Polymer Sci

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The use of flexible films in agriculture has increased intensely in the last 15 years bringing benefits to producers. However, environmental impacts increased due to their incorrect post‐use disposal which leads the degradable films to emerge as an alternative. The production films of poly(butylene adipate‐co‐terephthalate) and poly(lactic acid) reinforced with calcium carbonate (CaCO3) was studied focusing on producing lower cost materials and flexible films. Four different films (reinforcement compositions) were prepared by melt extrusion with 10 and 20 wt % of CaCO3. Mechanical and thermal properties, crystallinity, water absorption, and soil degradation, were evaluated. The addition of reinforcement leads to improved compatibility between the polymers in the matrix, which usually presented phase segregation. The films showed better mechanical properties with the addition of CaCO3. Highly orientated amorphous structures were obtained leading to low water absorption and low degradation in the simulated soil. This low degradation, suggests that the obtained films would be of interest in flexible mulch films manufacturing, particularly for Muridori plantation system, where long‐term plantations are needed. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46660.

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“…This is representative for very low miscibility between the two blend components. Al-Itry et al [47] observed similar decrease in T g when 20 wt% PBAT was added to PLA. Specifically, the T g was reduced by 1°C with regard to unblended PLA.…”

Section: Effect Of Compatibilizers On Thermalmentioning

confidence: 70%

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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Effect of the simultaneous biaxial stretching on the structural and mechanical properties of PLA, PBAT and their blends at rubbery state

Cited by 97 publications

References 29 publications

PBAT/TPS Composite Films Reinforced with Starch Nanoparticles Produced by Ultrasound

PBAT/TPS Composite Films Reinforced with Starch Nanoparticles Produced by Ultrasound

A new approach for flexible PBAT/PLA/CaCO₃ films into agriculture

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

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Effect of the simultaneous biaxial stretching on the structural and mechanical properties of PLA, PBAT and their blends at rubbery state

Cited by 97 publications

References 29 publications

PBAT/TPS Composite Films Reinforced with Starch Nanoparticles Produced by Ultrasound

PBAT/TPS Composite Films Reinforced with Starch Nanoparticles Produced by Ultrasound

A new approach for flexible PBAT/PLA/CaCO3 films into agriculture

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

Contact Info

Product

Resources

About

A new approach for flexible PBAT/PLA/CaCO₃ films into agriculture