Goodfellow PHB Biopolymer (PHB)

Category:	Biodeg Polymers , Biodegradable Polymers
Manufacturer:	Goodfellow Corporation
Trademark:	Goodfellow PHB
Fillers:	-
Ports:	Qinzhou, Shekou, Shanghai, Ningbo
Delivery Terms	FOB, CIF, DAP, DAT, DDP
PDF:	Ln67yK_Goodfellow-PHB-Biopolymer-PHB-.pdf
PRICE:	Order Products email sales@su-jiao.com

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PHB and its copolymers with polyhydroxyvalerate (PHV) are melt-processable semi-crystalline thermoplastics made by biological fermentation from renewable carbohydrate feedstocks. They have been described as "the first example of a true thermoplastic from biotechnology" and are also biodegradeable. Although quite stable under everyday conditions they degrade slowly in the body and when composted or in landfill sites. [The HB monomer unit is a normal constituent of human blood.] Their chemical resistance is somewhat limited as they are attacked by acids and alkalis and dissolve in chlorinated solvents. Rather remarkably, they are optically active polymers with a chiral site in each molecular repeat unit, all of which are in the D- (or R) configuration. PHB homopolymer is a stiff and rather brittle polymer of high crystallinity, whose mechanical properties are not unlike those of polystyrene, though it is less brittle and more temperature resistant. Hence, copolymers are preferred for general purposes. It is believed that the most likely area for the application of homopolymer is in the medical/biological fields. Chemical Resistance: Acids - dilute Fair Alcohols - Fair Alkalis - Poor Greases and Oils - Good Resistance to Ultra-violet - Fair

Message

PHB and its copolymers with polyhydroxyvalerate (PHV) are melt-processable semi-crystalline thermoplastics made by biological fermentation from renewable carbohydrate feedstocks. They have been described as "the first example of a true thermoplastic from biotechnology" and are also biodegradeable. Although quite stable under everyday conditions they degrade slowly in the body and when composted or in landfill sites. [The HB monomer unit is a normal constituent of human blood.]

Their chemical resistance is somewhat limited as they are attacked by acids and alkalis and dissolve in chlorinated solvents. Rather remarkably, they are optically active polymers with a chiral site in each molecular repeat unit, all of which are in the D- (or R) configuration.

PHB homopolymer is a stiff and rather brittle polymer of high crystallinity, whose mechanical properties are not unlike those of polystyrene, though it is less brittle and more temperature resistant. Hence, copolymers are preferred for general purposes. It is believed that the most likely area for the application of homopolymer is in the medical/biological fields.

Chemical Resistance:
Acids - dilute Fair
Alcohols - Fair
Alkalis - Poor
Greases and Oils - Good
Resistance to Ultra-violet - Fair

General Information
Features	Grease Resistant Homopolymer Medium Heat Resistance Oil Resistant Radiation (Gamma) Resistant Renewable Resource Content Semi Crystalline
Uses	Medical/Healthcare Applications
Forms	Fabric Film Granules Rod Sheet
Processing Method	Injection Molding

Physical	Nominal Value	Unit
Density	1.25	g/cm³

Mechanical	Nominal Value	Unit
Tensile Modulus	3500	MPa
Tensile Strength (Yield)	40.0	MPa

Impact	Nominal Value	Unit
Notched Izod Impact	35 to 60	J/m

Thermal	Nominal Value	Unit
Continuous Use Temperature	95.0	°C

Electrical	Nominal Value	Unit
Volume Resistivity	1.0E+16	ohms·cm
Dielectric Strength (1e6)	0.12	kV/mm

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