Results 11 to 20 of about 2,688 (164)
Prolonged Release of IL-10 From Enzyme-Mediated Poly-l-(Tyrosine-co-Phenylalanine) Nanocrystals Enhances Stability and Modulates Inflammatory Responses. [PDF]
BiopolymersSchematic representation of enzyme‐mediated peptide nanocrystal formation and IL‐10 encapsulation, providing stabilized and sustained cytokine delivery that modulates macrophage phenotype and reduces inflammatory responses. ABSTRACT Protease‐catalyzed synthesis of a peptide composed of l‐tyrosine and l‐phenylalanine (2.2:1 M ratio) was achieved in a ...
Landa-Tencle F +11 more
europepmc +2 more sources
The morphology of crystallisation of PHBV/PHBV copolymer blends [PDF]
European Polymer Journal, 2019 Abstract The crystallisation of a range of as-produced poly(3-hydroxybutyrate-co-3-hydroxyvalerate) copolymer blends from a mixed culture polyhydroxyalkanoate production process, with low (15%), high (82%) and intermediate (62% and 50%) average 3-hydroxyvalerate (3HV) contents, was studied at different temperatures using polarised optical microscopy,
Alexandra Langford +4 more
openaire +2 more sources
Accelerated Weathering Effects on Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) and PHBV/TiO2 Nanocomposites [PDF]
Polymers, 2020 The effect of accelerated weathering on poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) and PHBV-based nanocomposites with rutile titanium (IV) dioxide (PHBV/TiO2) was investigated. The accelerated weathering test applied consecutive steps of UV irradiation (at 340 nm and 0.76 W m−2 irradiance) and moisture at 50 °C following the ASTM D4329 ...
Ana Antunes +5 more
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Centrifugally spun PHBV micro and nanofibres [PDF]
Materials Science and Engineering: C, 2017 This paper reports the first study on centrifugal spinning of PHBV fibres. Fibres were spun from solution using a range of polymer concentrations, spin speeds and spinneret to collector distances. A PHBV polymer concentration of 25% w/v spun at 9000rmin-1 produced the highest quality fibres, with fibre diameters predominantly in the 0.5-3μm range.
Upson, SJ +4 more
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eXPRESS Polymer Letters, 2022 Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) is a polyester, produced naturally by microorganisms, with excellent biocompatibility. Corona and radio-frequency (RF) plasma treatment were applied in order to improve the degradation process of PHBV ...
Ana Antunes +6 more
doaj +1 more source
Enhancing impact resistance and biodegradability of PHBV by melt blending with ENR
Scientific Reports, 2022 This research aims to enhance the mechanical characteristics of poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) by using epoxidized natural rubber (ENR-25 and ENR-50) as a toughening agent and polybutadiene (PB) grafted with maleic anhydride (MA) (3 ...
Napat Tomano +3 more
doaj +1 more source
eXPRESS Polymer Letters, 2021 The production of poly(lactic acid) (PLA) biodegradable blends with other biopolymers, such as poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV), and the introduction of carbon nanotubes (CNT) are promising solutions for electrical and electromagnetic ...
A. P. B. Silva +4 more
doaj +1 more source
Non-Isothermal Crystallization Kinetics of Injection Grade PHBV and PHBV/Carbon Nanotubes Nanocomposites Using Isoconversional Method [PDF]
Journal of Composites Science, 2020 Carbon nanotubes (CNT)-reinforced polymeric composites are being studied as promising materials due to their enhanced properties. However, understanding the behavior of polymers during non-isothermal crystallization is important once the degree of crystallinity and crystallization processes are affected when nanoparticles are added to matrices. Usually,
Thaís Larissa do Amaral Montanheiro +6 more
openaire +1 more source
eXPRESS Polymer Letters, 2023 The present study carried out the characterization of carbon nanotubes (CNT) recovered from the biodegradation process of poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV)/CNT nanocomposites and the use of this recovered CNT (CNT-rec) in the production
Ana Paula Bernardo da Silva +7 more
doaj +1 more source
Supercritical antisolvent precipitation of PHBV microparticles [PDF]
International Journal of Pharmaceutics, 2007 The micronization of poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) from organic solutions using supercritical antisolvent (SAS) technique has been successfully achieved. SAS experiments were carried out at different operational conditions and microspheres with mean diameters ranging from 3 to 9 microm were obtained. The effect of CO(2) and liquid
Costa, M. S. +3 more
openaire +3 more sources