High toughness poly(lactic acid) (PLA) formulations obtained by ternary blends with poly(3-hydroxybutyrate) (PHB) and flexible polyesters from succinic acid

García-Campo, María Jesús; Quiles-Carrillo, Luís; Sànchez-Nácher, Lourdes; Balart, Rafael; Muñoz, Néstor Montañés

doi:10.1007/s00289-018-2475-y

Cited by 21 publications

(6 citation statements)

References 69 publications

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“…19 Garcia-Campo et al studied the ternary blends of PLA, PHB and PBS to achieve high toughness PLA. 21 Ma et al studied injection moulded dicumyl peroxide compatibilized PHB/PBS blends. 22 Their research included studies on crystallization rate and morphology of these PHB/PBS blends.…”

Section: Introductionmentioning

confidence: 99%

Poly(butylene succinate-co-adipate)/poly(hydroxybutyrate) blend films and their thermal, mechanical and gas barrier properties

Luoma

Rokkonen

Tribot

et al. 2022

Polymers from Renewable Resources

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Depleting fossil resources and plastic pollution have generated an increasing demand for development of renewable and biodegradable polymers. Among other applications, packaging films are at the forefront of the scene. Poly(butylene succinate-co-adipate) (PBSA) is an interesting biopolymer due to its flexibility and good processability. However, its poor barrier properties limit the range of applications. On the contrary, poly(hydroxybutyrate) (PHB) biopolymer reveals good barrier performance, as well as stiffness and fast biodegradation rate. However, PHB drawbacks are its brittleness and difficult processability. By physical blending approach, a solution was delivered to overcome the shortcomings of these biopolymers, resulting in tailored properties of the films. PHB improved barrier performance of the blend film while flexible PBSA contributed to easier processability and better ductility. In this study, biobased and biodegradable blend films were produced in pilot-scale. The effects of PBSA/PHB blending were extensively studied by tensile testing, water and oxygen barrier testing, and thermal analysis. PBSA/PHB blend films exhibited improved Young’s modulus in comparison to neat PBSA. With 50 wt% PHB content, modulus of blend film was increased by 554% compared to pure PBSA film. The ductility of blend films decreased as a function of PHB content, becoming completely brittle at 50 wt%. It was found that barrier properties of PBSA/PHB films improved in comparison to neat PBSA. Oxygen transmission test results showed that oxygen permeability decreased as a function of PHB content. Similar trend was observed with water vapour permeation properties.

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Section: Introductionmentioning

confidence: 99%

Poly(butylene succinate-co-adipate)/poly(hydroxybutyrate) blend films and their thermal, mechanical and gas barrier properties

Luoma

Rokkonen

Tribot

et al. 2022

Polymers from Renewable Resources

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“…The use of PBSA alone is impracticable in rigid items due to its low stiffness, strength and melting point, but thanks to its low glass transition temperature its behavior is quite similar to a rubber and therefore lends itself very well to physical blending with PLA in order to increase its toughness by the well-known rubber toughening mechanism [ 20 , 24 , 25 ]. Thus, several research groups recently evidenced the possibility of modulating PLA brittleness by blending with PBSA [ 26 , 27 , 28 , 29 , 30 , 31 , 32 , 33 ].…”

Section: Introductionmentioning

confidence: 99%

Poly(lactic acid) (PLA)/Poly(butylene succinate-co-adipate) (PBSA) Compatibilized Binary Biobased Blends: Melt Fluidity, Morphological, Thermo-Mechanical and Micromechanical Analysis

Aliotta

Vannozzi

Canesi³

et al. 2021

Polymers

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In this work poly(lactic) acid (PLA)/poly(butylene succinate-co-adipate) (PBSA) biobased binary blends were investigated. PLA/PBSA mixtures with different compositions of PBSA (from 15 up to 40 wt.%) were produced by twin screw-extrusion. A first screening study was performed on these blends that were characterized from the melt fluidity, morphological and thermo-mechanical point of view. Starting from the obtained results, the effect of an epoxy oligomer (EO) (added at 2 wt.%) was further investigated. In this case a novel approach was introduced studying the micromechanical deformation processes by dilatometric uniaxial tensile tests, carried out with a videoextensometer. The characterization was then completed adopting the elasto-plastic fracture approach, by the measurement of the capability of the selected blends to absorb energy at a slow rate. The obtained results showed that EO acts as a good compatibilizer, improving the compatibility of the rubber phase into the PLA matrix. Dilatometric results showed different micromechanical responses for the 80–20 and 60–40 blends (probably linked to the different morphology). The 80–20 showed a cavitational behavior while the 60–40 a deviatoric one. It has been observed that while the addition of EO does not alter the micromechanical response of the 60–40 blend, it profoundly changes the response of the 80–20, that passed to a deviatoric behavior with the EO addition.

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“…[12][13][14][15][16] To overcome this, physical blending with flexible polymers and plasticization have been proposed. [17,18] It has been widely reported in the literature the remarkable improvement in ductile and impact strength properties of PLA by binary and ternary blends with flexible polymers such as PBS, [19][20][21] PCL, [22] PBSA, [23] polybutylene adipate-co-terephthalate (PBAT), [24][25][26] and thermoplastic starch, [27] among others, with or without using compatibilizers. [28,29] A plasticizer must fulfill some features for good efficiencies, such as low molecular weight, high boiling point, low viscosity, non-volatile character, low migration, and non-toxic, among others.…”

Section: Doi: 101002/mame202300022mentioning

confidence: 99%

“…[ 12–16 ] To overcome this, physical blending with flexible polymers and plasticization have been proposed. [ 17,18 ] It has been widely reported in the literature the remarkable improvement in ductile and impact strength properties of PLA by binary and ternary blends with flexible polymers such as PBS, [ 19–21 ] PCL, [ 22 ] PBSA, [ 23 ] polybutylene adipate‐ co ‐terephthalate (PBAT), [ 24–26 ] and thermoplastic starch, [ 27 ] among others, with or without using compatibilizers. [ 28,29 ]…”

Section: Introductionmentioning

confidence: 99%

Esters of Cinnamic Acid as Green Plasticizers for Polylactide Formulations with Improved Ductility

Barandiaran

Gomez‐Caturla

Martínez

et al. 2023

Macro Materials & Eng

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This study demonstrates the potential of different cinnamate esters, namely methyl trans‐cinnamate (MC), isobutyl cinnamate (IBC), allyl cinnamate (AC), and ethyl cinnamate (EC), as environmentally friendly plasticizers for polylactide (PLA). Plasticized PLA formulations with a constant nominal wt% of 20 of each plasticizer are compounded in a twin‐screw co‐rotating extruder and subsequently processed by injection molding. The results show exceptional plasticization efficiency of AC with an increase in elongation at break from 3.9% (neat PLA), up to 339.4% and a remarkable increase in impact strength, thus showing great potential to overcome the main drawback related to PLA intrinsic brittleness. The incorporation of cinnamates in a PLA matrix leads to a decrease in Tg from 61.7 °C down to 36.1 °C for the plasticized PLA formulation containing 20 wt% AC. Thermogravimetry analysis reveals that a slight plasticizer loss occurs during processing, as it happens with other monomeric plasticizers, but this phenomenon does not limit their plasticization efficiency. Therefore, the results obtained in this study confirm the suitability of a new family of organic compounds derived from the esterification of cinnamic acid as green plasticizers for PLA with improved toughness, with comparable, or even superior, ductile properties of typical plasticizers for PLA.

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High toughness poly(lactic acid) (PLA) formulations obtained by ternary blends with poly(3-hydroxybutyrate) (PHB) and flexible polyesters from succinic acid

Abstract: High toughness poly (lactic acid) (PLA) formulations obtained by ternary blends with poly (3hydroxybutyrate) (PHB) and flexible polyesters from succinic acid.

Cited by 21 publications

References 69 publications

Poly(butylene succinate-co-adipate)/poly(hydroxybutyrate) blend films and their thermal, mechanical and gas barrier properties

Poly(butylene succinate-co-adipate)/poly(hydroxybutyrate) blend films and their thermal, mechanical and gas barrier properties

Poly(lactic acid) (PLA)/Poly(butylene succinate-co-adipate) (PBSA) Compatibilized Binary Biobased Blends: Melt Fluidity, Morphological, Thermo-Mechanical and Micromechanical Analysis

Esters of Cinnamic Acid as Green Plasticizers for Polylactide Formulations with Improved Ductility

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