Sorption and diffusion of water and organic solvents in poly(β-hydroxybutyrate) films

Razumovskii, L.P.; Iordanskii, A. L.; Заиков, Г. Е.; Zagreba, E.D.; McNeill, I.C.

doi:10.1016/0141-3910(94)90161-9

Cited by 20 publications

(15 citation statements)

References 5 publications

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“…There is no significant difference in sorption behavior between the copolymers, so it can be stated that water sorption is virtually independent of the 3HV content of the copolymer in the composition range studied here. Our sorption results are in full agreement with data presented elsewhere for PHB, 21,22 also being close in magnitude to those of PET 23 and PVC. 24 The isotherms show a pronounced upturn at high activities, which is a typical behavior in moderately hydrophobic polymers.…”

Section: Dynamic Sorption Experimentssupporting

confidence: 94%

“…L ϭ ART exp͑ Ϫ B/f͒ (22) where f is the fractional free volume, B is a parameter that has been interpreted as the critical hole size for a diffusional jump, and A is also a parameter of the system. The existence of a penetrant-induced plasticization effect at intermediate concentrations might be responsible for the increase in mobility in this range, via an increment in the free volume of the polymer.…”

Section: Sorptionmentioning

confidence: 99%

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Water transport properties in poly(3-hydroxybutyrate) and poly(3-hydroxybutyrate-co-3-hydroxyvalerate) biopolymers

Miguel

Iruin

1999

J. Appl. Polym. Sci.

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Water sorption and diffusion have been investigated in poly(3-hydroxybutyrate) (PHB) and three poly(3-hydroxybutyrate-co-3-hydroxyvalerate) copolymers [P(HB-HV)] by means of a Cahn electromicrobalance. Permeability of these samples have been determined using a gravimetric permeation cell. Two experimental setups were used for the gravimetric sorption measurements, under dynamic and static conditions, respectively. The differences observed in the results obtained using these techniques are discussed. The sorption measurements have evidenced the tendency of water molecules to form aggregates or clusters in the polymer. In addition, the static sorption method revealed the potential of PHB and P(HB-HV) to undergo molecular relaxations, eventually leading to a partial desorption of the previously sorbed water after an induction period. The clustering effect was adequately described by the polycondensation model. On the other hand, the interpretation of the diffusivity in terms of mobility coefficients has revealed a competition between a plasticization effect and clustering. As a whole, water transport properties in PHB and its copolymers can be considered to be very close in magnitude to those of common thermoplastics such as PVC and PET.

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Section: Dynamic Sorption Experimentssupporting

confidence: 94%

Section: Sorptionmentioning

confidence: 99%

Water transport properties in poly(3-hydroxybutyrate) and poly(3-hydroxybutyrate-co-3-hydroxyvalerate) biopolymers

Miguel

Iruin

1999

J. Appl. Polym. Sci.

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“…In relation to WVP, which is shown in Figure (a), the annealed films obtained from the aligned electrospun PHB fibers presented higher WVP values than those obtained from the random fibers. Thus, as water sorption in the biopolymer is relatively low, that is, PHB is highly hydrophobic, WVP is known to be mainly diffusivity driven . Therefore, it can be considered that heterogeneities within the PHB films do have, as expected, a strong effect on permeability.…”

Section: Resultsmentioning

confidence: 90%

Multilayer structures based on annealed electrospun biopolymer coatings of interest in water and aroma barrier fiber‐based food packaging applications

Cherpinski

Torres‐Giner

Cabedo

et al. 2017

J of Applied Polymer Sci

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In this research work, for the first time, a fiber‐based packaging material was coated by annealed electrospun ultrathin fibers of poly(3‐hydroxybutyrate), poly(vinyl alcohol), and polylactide. The resultant mono‐ and multilayer structures self‐adhered to the paper substrate and were characterized in terms of morphology, optical, and barrier properties. Additionally, the use of a static flat plate and rotating mandrel collector as well as the application of different electrospinning deposition times were analyzed. The thermally treated electrospun biopolymers yielded totally transparent films while, due to the opaque nature of the uncoated paper substrate, the developed packaging materials were also opaque but with a glossier surface finish provided by the bioplastic coating. The annealed films obtained from random electrospun fibers, that is, the mats of ultrathin fibers collected on the static plate, presented higher transparency and thickness and also enhanced barrier performance. On the overall, the developed annealed electrospun biopolymer coatings resulted in a significant improvement of the paper barrier properties to water and limonene vapors, being the paper/poly(vinyl alcohol)/poly(3‐hydroxybutyrate) film the best performing multilayer packaging structure. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 45501.

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“…One can also observe that the incorporation of eugenol into the PHBV monolayers decreased the permeability of both vapors whereas there were also significant differences for the electrospun monolayers containing eugenol. (93), the decrease in permeability to water vapor can be ascribed to the hydrophobic character of eugenol, where the presence of the oily molecules dispersed in PHA matrix impaired the mobility of water molecules (61,67,94). For limonene, as opposed to moisture, the aroma molecules are known to plasticize PHAs and, then, solubility plays a more important role in permeability than diffusion.…”

Section: Barrier Performancementioning

confidence: 99%

Development of Electrospun Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) Monolayers Containing Eugenol and Their Application in Multilayer Antimicrobial Food Packaging

et al. 2020

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In this research, different contents of eugenol in the 2.5-25 wt.% range were first incorporated into ultrathin fibers of poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) by electrospinning and then subjected to annealing to obtain antimicrobial monolayers. The most optimal concentration of eugenol in the PHBV monolayer was 15 wt.% since it showed high electrospinnability and thermal stability and also yielded the highest bacterial reduction against Staphylococcus aureus (S. aureus) and Escherichia coli (E. coli). This eugenol-containing monolayer was then selected to be applied as an interlayer between a structural layer made of a cast-extruded poly(3-hydroxybutyrate) (PHB) sheet and a commercial PHBV film as the food contact layer. The whole system was, thereafter, annealed at 160 • C for 10 s to develop a novel multilayer active packaging material. The resultant multilayer showed high hydrophobicity, strong adhesion and mechanical resistance, and improved barrier properties against water vapor and limonene vapors. The antimicrobial activity of the multilayer structure was also evaluated in both open and closed systems for up to 15 days, showing significant reductions (R ≥ 1 and < 3) for the two strains of food-borne bacteria. Higher inhibition values were particularly attained against S. aureus due to the higher activity of eugenol against the cell membrane of Gram positive (G+) bacteria. The multilayer also provided the highest antimicrobial activity for the closed system, which better resembles the actual packaging and it was related to the headspace accumulation of the volatile compounds. Hence, the here-developed multilayer fully based on polyhydroxyalkanoates (PHAs) shows a great deal of potential for antimicrobial packaging applications using biodegradable materials to increase both quality and safety of food products.

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Sorption and diffusion of water and organic solvents in poly(β-hydroxybutyrate) films

Cited by 20 publications

References 5 publications

Water transport properties in poly(3-hydroxybutyrate) and poly(3-hydroxybutyrate-co-3-hydroxyvalerate) biopolymers

Water transport properties in poly(3-hydroxybutyrate) and poly(3-hydroxybutyrate-co-3-hydroxyvalerate) biopolymers

Multilayer structures based on annealed electrospun biopolymer coatings of interest in water and aroma barrier fiber‐based food packaging applications

Development of Electrospun Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) Monolayers Containing Eugenol and Their Application in Multilayer Antimicrobial Food Packaging

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