Results 81 to 90 of about 90,476,059 (268)

The effect of gamma radiation on mechanical properties of biodegradable polymers poly(3-hydroxybutyrate) and poly(3-hydroxybutyrate-co-3-hydroxyvalerate)

open access: yesMaterials Research, 2012
Brazilian poly(3-hydroxybutyrate), P(3-HB), and its copolymer, poly (3-hydroxybutyrate-co-3-hydroxyvalerate), P(3-HB-co-3-HV) were irradiated with gamma radiation (60Co) at room temperature and in the presence of oxygen. The viscosity-average molar mass (
Leticia Maria Oliveira   +2 more
doaj   +1 more source

Gamma Irradiation‐Based Free Radical Grafting of N‐Hydroxyethyl Acrylamide onto Poly[(R)‐3‐hydroxybutyrate]

open access: yesMacromolecular Rapid Communications, EarlyView.
This work demonstrates successful gamma‐radiation‐induced grafting of N‐hydroxyethyl acrylamide onto poly[(R)‐3‐hydroxybutyrate], producing substantial changes in material properties. Grafting generated a biphasic, less crystalline structure with enhanced thermal stability, elongation (65%), toughness (378% increase), and exceptional water uptake (610 ...
Cole Walchle   +5 more
wiley   +1 more source

Produção de polihidroxialcanoatos por Cupriavidus necator, em batelada sequencial com reciclo externo de células, e modelagem do processo a partir da análise de fluxos metabólicos [PDF]

open access: yes, 2015
Tese (doutorado) - Universidade Federal de Santa Catarina, Centro Tecnológico, Programa de Pós-Graduação em Engenharia de Alimentos, Florianópolis, 2015.Os Polihidroxialcanoatos (PHAs), com destaque para o Poli(3-hidroxibutirato) (P(3HB)) e o Poli(3 ...
Schmidt, Mélodi
core  

Biosynthesis of poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) in Bacillus aryabhattai and cytotoxicity evaluation of PHBV/poly(ethylene glycol) blends

open access: yes3 Biotech, 2020
The study described poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) accumulation in Bacillus aryabhattai PHB10 for the first time and evaluated the polymer induced cytotoxicity in-vitro with PHBV/poly(ethylene glycol) (PEG) blends. The B. aryabhattai
Aneesh Balakrishna Pillai   +2 more
semanticscholar   +1 more source

Repurposing antimicrobial agents for neuroprotection: Mechanisms, clinical potential, and challenges

open access: yesNeuroprotection, EarlyView.
Antimicrobial agents exert neuroprotective effects through modulation of interconnected pathways. Tetracyclines, macrolides, antimalarial agents, sulfones, and antiparasitic agents suppress neuroinflammation, oxidative stress, and apoptosis while preserving mitochondrial function and neurotransmission.
Mohammad Amin Manavi   +5 more
wiley   +1 more source

Mechanically adjustable and degradable scaffolds for the treatment of articular cartilage defects

open access: yes, 2014
Articular cartilage (AC) has long been known as the tissue that “once destroyed, is not repaired”. Damage to the AC may impair joint function, leading to osteoarthritis, joint destruction, and ultimately, joint replacement.
Ching, Kuan Yong
core   +1 more source

Packaging related properties of commercially available biopolymers – An overview of the status quo

open access: yeseXPRESS Polymer Letters, 2018
Several commercially available thermoplastic biopolymers were processed in a continuous extrusion line. The molecular weight, crystallinity, and mechanical and permeation properties of the cast films were determined in order to evaluate the status quo of
V. Jost
doaj   +1 more source

Development of Cellulosic Bioplastic‐Based Biocomposites for Biodegradable Packaging Applications: Effect of High Acetyl Content and High Filler Loading

open access: yesPolymer Engineering &Science, EarlyView.
Schematic representation of the development of cellulosic bioplastic‐based biocomposites via reactive extrusion and injection molding, demonstrating improved oxygen and water vapor barrier properties for biodegradable packaging applications. ABSTRACT Cellulosic bioplastics have attained significant interest because of their biodegradability and ...
Reshma Krishnan   +2 more
wiley   +1 more source

Feeding strategies for tuning poly (3-hydroxybutyrate-co-4-hydroxybutyrate) monomeric composition and productivity using Burkholderia sacchari

open access: yes, 2017
Poly(3-hydroxybutyrate-co-4-hydroxybutyrate) (P(3HB-4HB)) co-polymers were produced at bench-scale in fed-batch cultivations by Burkholderia sacchari from glucose (main carbon-source) and gamma-butyrolactone (GBL) as co-substrate.
Cesário, M. Teresa   +7 more
core   +1 more source

Fabrication and Degradation of Electrospun Polyhydroxyalkanoate Film [PDF]

open access: yesЖурнал Сибирского федерального университета: Серия Биология, 2015
Polyhydroxyalkanoates (PHAs) are a family of biopolymers with good biodegradability. Poly(3- hydroxybutyrate) [P(3HB)], poly(3-hydroxybutyrate-co-25 mol % 4-hydroxybutyrate) [P(3HBco- 25 mol % 4HB)] and poly(3-hydroxybutyrate-co-75 mol % 4 ...
Lee Joyyi   +4 more
doaj  

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