Influence of Poly(Ethylene Grycol) (PEG) on the Properties of Influence of Poly(3-Hydroxybutyrate-CO-3-Hydroxyvalerate) - PHBV

Catoni, Sara E. M.; Trindade, Ketlyn N.; Gomes, Caio A. T.; Schneider, A.; Pezzin, Ana Paula Testa; Soldi, Valdir

doi:10.4322/polimeros.2013.037

Cited by 29 publications

(6 citation statements)

References 7 publications

(8 reference statements)

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“…[11][12][13] However, PHBV has been prevented its application in some biomedical elds by some shortcomings, such as poor mechanical performance, high crystallinity degree and inherent rigidity, and intrinsic hydrophobicity. 14 As the surface modication with hydrophilic polymers, polyethylene oxide (PEO) has been explored because of the outstanding properties, 15 including good solubility in water and in organic solvents, a lack of toxicity, no antigenicity, non-immunogenicity and hydrophilic, all of which are essential properties for tissue engineering.…”

Section: Introductionmentioning

confidence: 99%

Effect of different solvent systems on PHBV/PEO electrospun fibers

Zou

et al. 2017

RSC Adv.

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The selection of non-hazardous solvent systems is an important factor that can significantly influence fiber formation during polymer electrospinning. In this paper, poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV)/polyethylene oxide (PEO) has been electrospun using different solvent systems to investigate the influence of different solution properties on nanofiber morphology and diameter, the thermal and mechanical properties, as well as the degradation kinetics of the electrospun fibers. The morphology, thermal and mechanical properties of PHBV/PEO electrospun fibers were characterized using scanning electron microscopy (SEM), thermogravimetric analysis (TG) and differential scanning calorimetry (DSC), and a universal testing machine, respectively. The results showed that the binary-solvent system (dichloromethane/ethanol DCM/EtOH) gave the finest defect-free fibers, and exhibited the best thermal and mechanical properties of all the single solvents (chloroform (CHL), dichloromethane (DCM)).Therefore, the effect of DCM/EtOH in different ratios on PHBV/PEO electrospun fibers was studied in detail. In brief, the DCM/EtOH solvent system was considered to be the best candidate for PHBV/PEO for electrospinning.

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Section: Introductionmentioning

confidence: 99%

Effect of different solvent systems on PHBV/PEO electrospun fibers

Zou

et al. 2017

RSC Adv.

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“…The used plasticisers differ in their molecular weight (triethyl citrate 276 g mol −1 , polyethylene glycol 950-1050 g mol −1 ). PHBV and polyethylene glycol are miscible in all mass ratios, except 50/50 [25]. Higher concentrations of plasticiser increase the water vapour permeability and the velocity of biodegradation [23].…”

Section: Plasticisersmentioning

confidence: 98%

“…The processability of polymers can be improved by optimisation of processing [19], by blending with a second polymer, by additivation with plasticizers [20][21][22][23][24][25][26][27], or by using nucleation agents.…”

Section: Plasticisersmentioning

confidence: 99%

“…Thereby, the brittleness can be reduced and the elongation at break can be increased. In other studies, PHBV was plasticised with triethyl citrate and polyethylene glycol [21][22][23]25,27]. However, extrusion of such films was rarely described, for example, by Jost [27], and coating of paper with plasticised PHBV has not been described much yet either [28,29].…”

Section: Plasticisersmentioning

confidence: 99%

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Extrusion Coating of Paper with Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV)—Packaging Related Functional Properties

et al. 2019

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Taking into account the current trend for environmentally friendly solutions, paper coated with a biopolymer presents an interesting field for future packaging applications. This study covers the application of the biopolymer poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) on a paper substrate via extrusion coating. The intention of this study is to analyse the effect of a plasticiser on the processability (melting point, film thickness) and the final properties (crystallinity, elongation at break) of PHBV. Up to 15 wt.% of the plasticisers triethyl citrate (TEC) and polyethylene glycol (PEG) were used as additive. The processing (including melt flow rate) as well as the structural properties (melting and crystallisation temperature, surface structure by atomic force microscopy (AFM), polarisation microscopy, scanning electron microscopy (SEM)), mechanical properties (elongation at break, tensile strength, elastic modulus, adhesion), and barrier properties (grease) of these blends and their coating behaviour (thickness on paper), were tested at different extrusion temperatures. The melting temperature (Tm) of PHBV was reduced by the plasticisers (from 172 °C to 164 resp. 169 °C with 15 wt.% TEC resp. PEG). The minimal achieved PHBV film thickness on paper was 30 µm owing to its low melt strength. The elastic modulus decreased with both plasticisers (from 3000 N/mm2 to 1200 resp. 1600 N/mm2 with 15 wt.% TEC resp. PEG). At 15 wt.% TEC, the elongation at break increased to 2.4 length-% (pure PHBV films had 0.9 length-%). The grease barrier (staining) was low owing to cracks in the PHBV layers. The extrusion temperature correlated with the grease barrier, mechanical properties, and bond strength. The bond strength was higher for films extruded with a temperature profile for constant melt flow rate at different plasticiser concentrations. The bond strength was max. 1.2 N/15 mm. Grease staining occurs because of cracks induced by the low elongation at break and high brittleness. Extrusion coating of the used specific PHBV on paper is possible. In further studies, the minimum possible PHBV film thickness needs to be reduced to be cost-effective. The flexibility needs to be increased to avoid cracks, which cause migration and staining.

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“…Solution of pure PHBV and PCL and solutions of each biopolymer added with plasticizer (PEG) at 5%, 10%, and 20% (on polymer dry weight basis) were prepared. A PEG stock solution in chloroform was previously prepared [29], which was added in due amounts to the bioplastic solutions, followed by stirring at room temperature for 10 min.…”

Section: Introductionmentioning

confidence: 99%

Improvement of Paper Resistance against Moisture and Oil by Coating with Poly(-3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) and Polycaprolactone (PCL)

et al. 2021

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Surface hydrophobicity and grease resistance of paper may be achieved by the application of coatings usually derived from fossil-oil resources. However, poor recyclability and environmental concerns on generated waste has increased interest in the study of alternative paper coatings. This work focuses on the study of the performances offered by two different biopolymers, poly(3-hydroxybutyrate-co-3hydroxyvalerate) (PHBV) and polycaprolactone (PCL), also assessing the effect of a plasticizer (PEG) when used as paper coatings. The coated samples were characterized for the structural (by scanning electron microscopy, SEM), diffusive (water vapor and grease barrier properties), and surface properties (affinity for water and oil, by contact angle measurements). Samples of polyethylene-coated and fluorinated paper were used as commercial reference. WVTR of coated samples generally decreased and PHBV and PCL coatings with PEG at 20% showed interesting low wettability, as inferred from the water contact angles. Samples coated with PCL also showed increased grease resistance in comparison with plain paper. This work, within the limits of its lab-scale, offers interesting insights for future research lines toward the development of cellulose-based food contact materials that are fully recyclable and compostable.

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Influence of Poly(Ethylene Grycol) (PEG) on the Properties of Influence of Poly(3-Hydroxybutyrate-CO-3-Hydroxyvalerate) - PHBV

Cited by 29 publications

References 7 publications

Effect of different solvent systems on PHBV/PEO electrospun fibers

Effect of different solvent systems on PHBV/PEO electrospun fibers

Extrusion Coating of Paper with Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV)—Packaging Related Functional Properties

Improvement of Paper Resistance against Moisture and Oil by Coating with Poly(-3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) and Polycaprolactone (PCL)

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