Fully bio-based and biodegradable polylactic acid/poly(3-hydroxybutirate) blends: Use of a common plasticizer as performance improvement strategy

D'amico, David Alberto; Iglesias-Montes, Magdalena L.; Manfredi, Liliana Beatriz; Cyras, Viviana P.

doi:10.1016/j.polymertesting.2015.11.004

Cited by 78 publications

(48 citation statements)

References 31 publications

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“…They found a significant effect on the mechanical properties by adding a small amount of zinc acetate (0.1 wt% in the blend). Finally, some authors have formulated PLA/PHB(V) blends in order to improve their mechanical properties and/or processability, adding different components as plasticizers, either commercial or synthesized ad-hoc: PEG [27,28], ATBC [28], limonene [29], polyester plasticizer (Lapol 108) [30], lactic acid oligomer (oLA) [31] and tributyrin [32]. It has been accepted that concentrations from 10 to 20 wt% and up to 30 wt% are required to provide a substantial plasticization effect, which strongly modifies the mechanical properties: if the ductility is usually enhanced, the Young's modulus and the tensile strength are decreased.…”

Section: Introductionmentioning

confidence: 99%

Combined compatibilization and plasticization effect of low molecular weight poly(lactic acid) in poly(lactic acid)/poly(3-hydroxybutyrate-co-3-hydroxyvalerate) blends

Amor¹,

Okhay²,

Guinault³

et al. 2018

Express Polym. Lett.

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Abstract. Improving overall properties of poly(lactic acid) (PLA) by blending it with another biobased polymer has been a strong field of research over the last years. In this study we demonstrate the synergetic effect of a small amount (between 0.1 and 1 wt%) of oligomer-like PLA (oLA) on the thermal, mechanical and gas barrier properties of the widely studied PLA-poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) blends (90-10 wt%). Films of PLA/PHBV/oLA blends were prepared via single-screw extrusion. oLA being miscible with both PLA and PHBV, its compatibilizing effect was demonstrated by a decrease of the interfacial tension, a slight shift in the T g s of both polymers, and an increase in the elongation at break. It was also showed that oLA had a plasticizing effect on the PHBV dispersed phase, increasing its crystallinity rate. This resulted in a decrease in the permeability of the films while improving Young's modulus.

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Section: Introductionmentioning

confidence: 99%

Combined compatibilization and plasticization effect of low molecular weight poly(lactic acid) in poly(lactic acid)/poly(3-hydroxybutyrate-co-3-hydroxyvalerate) blends

Amor¹,

Okhay²,

Guinault³

et al. 2018

Express Polym. Lett.

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“…Because of this, it is important to develop new materials based on PHB, maintaining its excellent properties, but improving those that are not as good such as fragility and short processing window. Diverse approaches have been studied with the purpose of improving the mechanical and thermal properties as well as the processing of PHB, including the use of copolymers, the addition of a different polymer to obtain blends or the preparation of nanocomposites with nanofillers . In general, blending or preparation of composites is easier and faster than copolymerization methods.…”

Section: Introductionmentioning

confidence: 99%

Development and characterization of bionanocomposites based on poly(3‐hydroxybutyrate) and cellulose nanocrystals for packaging applications

Seoane

Fortunati

Puglia

et al. 2016

Polymer International

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Poly(3-hydroxybutyrate) (PHB)-based bionanocomposites were prepared using various percentages of cellulose nanocrystals (CNCs) by a solution casting method. CNCs were prepared from microcrystalline cellulose using sulfuric acid hydrolysis. The influence of CNCs on PHB properties was evaluated using differential scanning calorimetry, Fourier transform infrared spectroscopy, X-ray diffraction, thermogravimetry and tensile testing. Vapor permeation and light transmission of the materials were also measured. Differential scanning calorimetric tests demonstrated that CNCs were effective PHB nucleation agents. Tensile strength and Young's modulus of PHB increased with increasing CNC concentration. Moreover, the PHB/CNC bionanocomposites exhibited reduced water vapor permeation compared to neat PHB and had better UV barrier properties than commodity polymers such as polypropylene. It was found that nanocomposites with 6 wt% of CNCs had the optimum balance among thermal, mechanical and barrier properties.

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“…Subsequently, million tons of plastic wastes are generated every year with a remarkable negative effect on environment contamination . This fact, together with the petroleum depletion has led to a growing interest in research on environmentally friendly polymers with the main aim of obtaining low environmental impact materials with similar physical and chemical properties to those of conventional petroleum‐based polymer such as polyethylene, polypropylene, or others . These environmentally friendly polymers include those obtained from renewable resources as it is the case of poly(lactic acid) (PLA), lignin, thermoplastic starch, cellulose, chitosan, proteins (gluten, casein, ovalbumin, etc.…”

Section: Introductionmentioning

confidence: 99%

Improvement of Mechanical Ductile Properties of Poly(3-hydroxybutyrate) by Using Vegetable Oil Derivatives

Garcia‐Garcia

Fenollar

Fombuena

et al. 2016

Macromol. Mater. Eng.

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Poly(3‐hydroxybutyrate), P3HB is a thermoplastic polyester synthesized from bacterial fermentation with potential uses in packaging due to its biodegradability. Nevertheless, P3HB is a fragile material and its processing temperature window is very narrow which restricts its use. This study explores the potential of vegetable oil‐derived plasticizers, i.e., maleinized linseed oil (MLO) and an epoxidized fatty acid ester (EFAE) in the 5–20 phr range as environmentally friendly solutions for P3HB industrial formulations with improved toughness. The results show that optimum balance between ductile properties is achieved with low plasticizer content (5 phr) for both plasticizer types. Elongation at break and the impact resistance are increased by 28 and 71% respectively after addition of 5 phr MLO. With regard to EFAE, the elongation at break is improved by 40% and the impact resistance is increased to twice the value of P3HB. Another effect that both plasticizers provide is the thermal stabilization with a delay in the onset degradation temperature.

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Fully bio-based and biodegradable polylactic acid/poly(3-hydroxybutirate) blends: Use of a common plasticizer as performance improvement strategy

Cited by 78 publications

References 31 publications

Combined compatibilization and plasticization effect of low molecular weight poly(lactic acid) in poly(lactic acid)/poly(3-hydroxybutyrate-co-3-hydroxyvalerate) blends

Combined compatibilization and plasticization effect of low molecular weight poly(lactic acid) in poly(lactic acid)/poly(3-hydroxybutyrate-co-3-hydroxyvalerate) blends

Development and characterization of bionanocomposites based on poly(3‐hydroxybutyrate) and cellulose nanocrystals for packaging applications

Improvement of Mechanical Ductile Properties of Poly(3-hydroxybutyrate) by Using Vegetable Oil Derivatives

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