Properties and Biocompatibility of Poly-3- Hydroxybutyrate-co-3-Hydroxyvalerate/Poly-ε- Caprolactone Blends

Boyandin, Anatoly N.; Nikolaeva, Elena D.; Sukovatiy, Aleksey G.

doi:10.17516/1997-1389-2016-9-1-63-74

Cited by 5 publications

(6 citation statements)

References 4 publications

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“…Closed pores affect the mechanical strength of a material, and their abundance in the blend film (PHBH/PCL) compared to PHBH film (Figure C,D) potentially contributes to the lower Young’s modulus of the blend. Also, the lower Young’s modulus of the PHBH/PCL blend compared with that of pure PHBH ( p = 0.000) agreed with data reported for blends of PCL and PHBH, , as well as the blends of PCL and some other PHAs. ,, However, Katsumata et al reported occasional increases in Young’s modulus when small amounts of PCL were added to poly(3-hydroxybutyrate) (PHB) and PHBH. This was not observed in our study at the PCL ( M n 10 kDa) contents tested.…”

Section: Resultssupporting

confidence: 78%

“…Also, the lower Young's modulus of the PHBH/PCL blend compared with that of pure PHBH (p = 0.000) agreed with data reported for blends of PCL and PHBH, 17,42 as well as the blends of PCL and some other PHAs. 41,49,50 However, Katsumata et al 39 reported occasional increases in Young's modulus when small amounts of PCL were added to poly(3- hydroxybutyrate) (PHB) and PHBH. This was not observed in our study at the PCL (M n 10 kDa) contents tested.…”

Section: Release Ofmentioning

confidence: 99%

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Heat-Press Technique for Coating Ammonium Nitrate Granules with Biodegradable Hydrophobic Polymer Blend of Poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) and Poly(ε-caprolactone)

Ezema

Ooi

Matsumoto

2022

ACS Agric. Sci. Technol.

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The use of coated nitrogen fertilizers increases nitrogen use efficiency by reducing the nutrient's loss to the environment through ammonia volatilization, leaching, and denitrification. Biodegradable polymers are the preferred coating materials because they are consumed and eventually mineralized by microbes, which minimizes pollution. In this study, two biodegradable hydrophobic polymers, poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) (PHBH) and poly(ε-caprolactone) (PCL), were used to coat ammonium nitrate (NH 4 NO 3 ) granules using a heat-press technique that, for the first time, eliminated the need for organic solvents at the coating stage. With a polymer coating weight content of 8.6%, the release of nitrate ions (NO 3 − ) into water from PCL-coated fertilizers was very fast (approximately 90% in 1 week), whereas there was no release of NO 3 − from the PHBH-coated fertilizers until after 10 weeks. The NO 3 − release rate, the water vapor permeability, and the Young's modulus of the polymer coatings were regulated by blending PHBH and PCL (80:20 weight ratio). The controlled release of NO 3 − was also maintained in biologically active soil; biodegradation of the coatings resulted in no burst release of NO 3 − over the time period tested. These results demonstrated that PHBH, PCL, or their blend, when applied to the surface of NH 4 NO 3 granules using a heat-press technique, could effectively control nutrient release rate.

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Section: Resultssupporting

confidence: 78%

Section: Release Ofmentioning

confidence: 99%

Heat-Press Technique for Coating Ammonium Nitrate Granules with Biodegradable Hydrophobic Polymer Blend of Poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) and Poly(ε-caprolactone)

Ezema

Ooi

Matsumoto

2022

ACS Agric. Sci. Technol.

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“…When the concentration of PCL or PLA in the blend is increased, samples become more compact, showing a more dense morphology with no indications of phase separation. Similar results were previously reported in blends made with PCL [34]. From these observations, it can be concluded that blending with high contents of PCL and PLA mixed with PHBV forms homogeneous and dense microstructures, contributing to obtaining improved mechanical properties with respect to neat PHBV.…”

Section: Morphological Analysis and Wettabilitysupporting

confidence: 88%

Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) Blends with Poly(caprolactone) and Poly(lactic acid): A Comparative Study

Tubio,

Valle,

Carvalho

et al. 2023

Polymers

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Poly(hydroxybutyrate-co-hidroxyvalerate) (PHBV) is a biodegradable polymer, which is a potential substitute for plastics made from fossil resources. Due to its practical interest in the field of tissue engineering, packaging, sensors, and electronic devices, the demand for PHBV with specific thermal, electrical, as well as mechanical requirements is growing. In order to improve these properties, we have developed PHBV blends with two thermoplastic biodegradable polyesters, including poly(caprolactone) (PCL) and poly(lactic acid) (PLA). We analysed the effect of these biopolymers on the morphological, wetting, structural, thermal, mechanical, and electrical characteristics of the materials. Further, the biodegradation of the samples in simulated body fluid conditions was evaluated, as well as the antibacterial activity. The results demonstrate that the blending with PCL and PLA leads to films with a dense morphology, increases the hydrophilic character, and induces a reinforcement of the mechanical characteristics with respect to pristine PHBV. In addition, a decrease in dielectric constant and a.c. electrical conductivity was noticed for PHBV/PLA and PHBV/PCL blends compared to neat PHBV polymer. All neat polymers and blends showed antibacterial properties against S. aureus, with more than 40% bacterial reduction, which increased to 72% in the presence of PCL polymer for a blend ratio of 50/50. Thus, it is demonstrated a suitable way to further tailor a variety of functionalities of PHBV for specific applications, by the development of polymer blends with PLA or PCL.

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“…This is while blending could reduce the final cost associated with the use of expensive and scarcely available PHBH. So far, blends of PHBH have been considered with PLA [107][108][109], polycaprolactone (PCL) [110][111][112][113][114], polycarbonate (PC) [115], poly(methyl methacrylate) (PMMA) [116], poly (vinyl alcohol) (PVA) [117] and polystyrene (PS) [118]. Blends of PHBH with PLA and PCL, however, have been the most commonly used systems.…”

Section: Commonly Used Blending Polymersmentioning

confidence: 99%

Poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) (PHBH): Synthesis, properties, and applications - A review

Eraslan

Aversa

Nofar

et al. 2022

European Polymer Journal

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Properties and Biocompatibility of Poly-3- Hydroxybutyrate-co-3-Hydroxyvalerate/Poly-ε- Caprolactone Blends

Cited by 5 publications

References 4 publications

Heat-Press Technique for Coating Ammonium Nitrate Granules with Biodegradable Hydrophobic Polymer Blend of Poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) and Poly(ε-caprolactone)

Heat-Press Technique for Coating Ammonium Nitrate Granules with Biodegradable Hydrophobic Polymer Blend of Poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) and Poly(ε-caprolactone)

Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) Blends with Poly(caprolactone) and Poly(lactic acid): A Comparative Study

Poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) (PHBH): Synthesis, properties, and applications - A review

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