Effect of different plasticisers on the mechanical and barrier properties of extruded cast PHBV films

Jost, Verena; Langowski, Horst‐Christian

doi:10.1016/j.eurpolymj.2015.04.012

Cited by 94 publications

(95 citation statements)

References 41 publications

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“…In addition, the high stiffness and mechanical brittleness difficult processing of PHB. To achieve greater flexibility, a plasticizer can be added to increase the free volume between the polymer chains 21,22 or a copolymer of PHB, for example, polyhydroxybutyrate-cohydroxyvalerate (PHBV) can be used [23][24][25] . Another possibility to improve the performance of PHB is to use natural or synthetic fibers as reinforcing the polymeric matrix obtaining a composite [26][27][28] .…”

Section: Introductionmentioning

confidence: 99%

Polyhydroxybutyrate Composites with Random Mats of Sisal and Coconut Fibers

et al. 2016

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Biodegradable polymeric composites using natural fibers have been investigated aiming to mitigate environmental impacts. In this paper, polyhydroxybutyrate (PHB) composites obtained using random mats of sisal and coconut fibers by compression molding in a hydraulic press, and the fiber content varied between 10% and 15% relative to the weight of the polymer. Thermal analyses were performed such as Differential Scanning Calorimetry (DSC) and Thermogravimetric Analysis (TGA). Flexural and tensile tests were performed before and after conditioning in climate chamber with temperature and moisture. The results of thermal analysis show that the thermal stability of the materials remained, both PHB without fiber as for composites with natural fibers mats. The results of mechanical tests indicated that the PHB without fibers and composites showed similar flexural strength values, while the results of the tensile test PHB without fibers showed resistance to higher tensile composite.

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Section: Introductionmentioning

confidence: 99%

Polyhydroxybutyrate Composites with Random Mats of Sisal and Coconut Fibers

et al. 2016

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“…The effect of different kinds of plasticizers on the mechanical and thermal properties of PHBV matrices has been studied. Some of these are polyols, such as propylene glycol (PG) or glycerol (G), [20]; citrates, such as triethyl citrate (TEC) [21] and acetyl butyl citrate (ATBC) [12]; polyolefins, such as polyisobutylene [19]; dibutilphtalate (DBP) [21]; dibutyl sebacate [19]; oils and triglycerides, such as castor oil, soybean oil and epoxidised soybean oil (ESO) [20]; surfactants like sophorolipid [22] or poly-ethylene-glycol with medium molecular weight (PEG1000) [20]. In general, medium molecular weight substances with oxygen atoms (e.g.…”

Section: Introductionmentioning

confidence: 99%

Effect of plasticizers on thermal and physical properties of compression-moulded poly[(3-hydroxybutyrate)-co-(3-hydroxyvalerate)] films

et al. 2016

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a b s t r a c tPoly[(3-hydroxybutyrate)-co-(3-hydroxyvalerate)] (PHBV) is a promising bio-based, biodegradable polymer for replacing synthetic polymers, but its brittleness limits its application range. With the aim of improving the mechanical properties of PHBV films, different plasticizers (polyethylene glycol (PEG 200, 1000 and 4000), lauric acid (LA) and stearic acid (SA)) were incorporated into the film formulation at 10 wt%. All plasticized films showed lower melting temperature and crystallization degree than pure PHBV films. All plasticizers, except SA, reduced film stiffness and resistance to break, and increased the films' water sorption capacity and solubility as well as their water vapour permeability, but only PEG1000 yielded more extensible films. PEG1000 and PEG4000 gave rise to the most heat-resistant plasticized films, while LA and SA highly promoted the heat-sensitivity of PHBV. PEG1000 was the most effective at plasticizing PHBV films, and it was the only plasticizer that partially mitigated the ageing effects. However, a greater ratio of plasticizer would be required to adapt PHBV mechanical properties to some packaging requirements.

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“…Plasticizers with low molecular weight have no effect on PHBV. The most effective plasticizer for oxygen and water vapor permeability found was glycerol at 5 wt.% [28].…”

Section: Biopolymer Composites With Organic Fillers or Plasticizermentioning

confidence: 99%

Potential of polyhydroxyalkanoate (PHA) polymers family as substitutes of petroleum based polymers for packaging applications and solutions brought by their composites to form barrier materials

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Kızıl

Bechelany

et al. 2017

Pure and Applied Chemistry

124

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Today, there is an increasing concern about protection of ecological systems. Petro-based synthetic polymers are not biodegradable and cause environmental pollution. These polymers that are stuck in nature, affect wildlife adversely. Also, in future petrochemical materials will drain away and demand for ecofriendly plastics which can substitute synthetic plastics will increase. Biopolymers are products which can be degraded by enzymatic activities of various microorganisms, and the degradation products are nontoxic. They are attractive alternatives to non-degradable materials in short-term applications such as packaging. Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) is a member of polyhydroxyalkanoate (PHA) family which is biodegradable and produced by microorganism. It has good gas barrier properties that make it convenient to use in different applications. The present paper gives an overview on PHAs and their composites, their main properties, with a specific focus on potential applications of PHBV in packaging.

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Effect of different plasticisers on the mechanical and barrier properties of extruded cast PHBV films

Cited by 94 publications

References 41 publications

Polyhydroxybutyrate Composites with Random Mats of Sisal and Coconut Fibers

Polyhydroxybutyrate Composites with Random Mats of Sisal and Coconut Fibers

Effect of plasticizers on thermal and physical properties of compression-moulded poly[(3-hydroxybutyrate)-co-(3-hydroxyvalerate)] films

Potential of polyhydroxyalkanoate (PHA) polymers family as substitutes of petroleum based polymers for packaging applications and solutions brought by their composites to form barrier materials

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