ABSTRACT Poly(3‐hydroxybutyrate‐ co ‐3‐hydroxyvalerate) (PHBV) was blended with poly(lactic acid) (PLA) various reactive processing agents to decrease its brittleness and enhance processability. Three diisocyanates, namely, hexamethylene diisocyanate, poly(hexamethylene diisocyanate), 1,4‐phenylene were used as compatibilizing agents. The morphology, thermomechanical properties, rheological behavior investigated scanning electron microscopy, thermogravimetric analysis, differential...

Poly(3-hydroxybutyrate-co-3-valerate) (PHBV), being one of the most studied and commercially available polyhydroxyalkanoates (PHAs), presents an intrinsic brittleness narrow processing window that currently hinders its use in several plastic applications. The aim this study was to develop a biodegradable PHA-based blend by combining PHBV with poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) (PHBH), another copolyester PHA family shows more ductile behavior. Blends 20% wt., 30% 40% wt. PHBH were...

Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) has gained attention as a possible substitute for conventional polymers that could be integrated into the organic recycling system. Biocomposites with 15% of pure cellulose (TC) and woodflour (WF) were prepared to analyze role lignin on their compostability (58 °C) by tracking mass loss, CO2 evolution, microbial population. Realistic dimensions typical plastic products (400 µm films), well service performance (thermal stability, rheology),...

Novel biodegradable composites based on poly(3-hydroxybutirate-co-3-hydroxyvalerate) (PHBV) and different contents of purifi ed alpha-cellulose fi bers (3, 10, 25 45%) were prepared by melt blending characterized. The... | Find, read cite all the research you need Tech Science Press

ABSTRACT Poly(hydroxybutyrate‐ co ‐valerate) (PHBV) is a biopolymer that has gained lot of attention because its biodegradability, good thermal resistance, and balanced mechanical properties with respect to some commodity plastics. However, it presents two big limitations hinder potential application in replacing plastics for rigid injected parts: high cost low toughness. Aiming at overcoming these limitations, the use additives PHBV matrix was explored: thermoplastic polyurethane (TPU) as...

Fiber–matrix interfacial adhesion is one of the key factors governing final properties natural fiber-based polymer composites. In this work, four extrusion reactive agents were tested as potential compatibilizers in polyhydroxylbutyrate (PHB)/cellulose composites: dicumyl peroxide (DCP), hexamethylene diisocyanate (HMDI), resorcinol diglycidyl ether (RDGE), and triglycidyl isocyanurate (TGIC). The influence fibers different on mechanical properties, physical aging, crystallization behavior...

Poly(3-hydroxybutyrate-co-3-valerate), PHBV, is a bacterial thermoplastic biopolyester that possesses interesting thermal and mechanical properties. As it fully biodegradable, could be an alternative to the use of commodities in single-use applications or those intended for composting at their end life. Two big drawbacks PHBV are its low impact toughness high cost, which limit potential applications. In this work, we proposed PHBV-based compound with purified α-cellulose fibres polyurethane...

ABSTRACT The influence of the incorporation tris(nonylphenyl) phosphite (TNPP) as a chain extender on morphology and thermal stability poly(hydroxybutyrate‐ co ‐hydroxyvalerate) (PHBV)/clay nanocomposites obtained by melt mixing has been studied. Two different clays have used: laminar organomodified montmorillonite (Cloisite ® 30B) tubular unmodified halloysite (HNT). so‐obtained assessed transmission electron microscopy, scanning wide angle X‐ray diffraction, showing partially exfoliated...

Biocircularity could play a key role in the circular economy, particularly applications where organic recycling (composting) has potential to become preferred waste management option, such as food packaging. The development of fully biobased and biodegradable composites help reduce plastic valorize agro-based residues. In this study, extruded films made polyhydroxybutyrate-co-valerate (PHBV) lignocellulosic fibers, namely almond shell (AS) Oryzite® (OR), polymer hybrid composite precursor,...

Poly(hydroxybutyrate) (PHB) is a biopolymer biologically synthesized by controlled bacterial fermentation from wide variety of microorganisms. PHB proposed as potential green alternative to commonly used plastics in packaging, due its biodegradability and biocompatibility. However, if replace commodities, it has some limitations regarding thermo-mechanical performance overcome. Among them are critically the low toughness values at room temperature poor thermoforming ability. With aim...

Moving toward a more sustainable production model based on circular economy, biopolymers are considered as one of the most promising alternatives to reduce dependence oil-based plastics. Polyhydroxybutyrate-co-valerate (PHBV), bacterial biopolyester from polyhydroxialkanoates (PHAs) family, seems be an attractive candidate replace commodities in many applications such rigid packaging, among others, due its excellent overall physicochemical and mechanical properties. However, it presents...

Poly(hydroxyl butyrate-co-valerate) (PHBV) is a biopolymer synthesized by microorganisms that fully biodegradable with improved thermal and tensile properties respect to some commodity plastics. However, it presents an intrinsic brittleness limits its potential application in replacing plastics packaging applications. Films made of blends PHBV different contents thermoplastic polyurethane (TPU) were prepared single screw extruder their fracture toughness behavior was assessed means the...

Poly(3-hydroxybutyrate-

The rising resistance of various pathogens and the demand for materials that prevent infections drive need to develop broad-spectrum antimicrobial membranes capable combating a range microorganisms, thereby enhancing safety in biomedical industrial applications. Herein, we introduce simple efficient technique engineer composed polylactic acid (PLA) polybutylene adipate terephthalate (PBAT) biopolymers α-Ag2WO4 particles using an electrospinning technique. corresponding structural, thermal,...

The extensive use of recalcitrant plastic products together with their improper disposal has led to a global pollution problem. Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) gained attention as possible substitute that could be integrated into the organic recycling system after common waste. However, different components and fillers used improve its properties performance can also modify biodegradability which requires more research. PHBV-based biocomposites 15% pure cellulose (TC)...