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Polyhydroxybutyrate/Polyhydroxyvalerate 8% - Biopolymer ( PHB92/PHV 8 )

Material Information

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Film
Film

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General Description:  

General Description : See also PHB. PHB/PHV copolymers are used in preference to PHB homopolymer for general purposes (e.g. moulding containers) in order to obtain a better balance of stiffness and toughness. PHV contents of 5 - 20% give a useful range of properties broadly similar to those of the polyolefins (the polyethylenes and polypropylene). They melt at lower temperatures than the homopolymer, giving a useful improvement in melt-processability. Their other properties are similar to those of PHB.

They are being used for biodegradeable containers (of which shampoo bottles are the most high-profile example) and other articles difficult to recycle e.g. disposable razors or medically contaminated articles.

   

Chemical Resistance

Acids - dilute Fair
Alcohols Fair
Alkalis Poor
Greases and Oils Good

Electrical Properties

Dielectric constant @1MHz 3.0
Volume resistivity ( Ohmcm ) 1016

Mechanical Properties

Elongation at break ( % ) 15
Izod impact strength ( J m-1 ) 100
Tensile modulus ( GPa ) 0.9
Tensile strength ( MPa ) 28

Physical Properties

Density ( g cm-3 ) 1.25
Resistance to Ultra-violet Fair

Thermal Properties

Specific heat ( J K-1 kg-1 ) 1400
Thermal conductivity @23C ( W m-1 K-1 ) 0.15

Properties for Polyhydroxybutyrate/Polyhydroxyvalerate 8% - Biopolymer Film

Property Value
Extension to break - Longitudinal % 7-15
Extension to break - Transverse % 5-10
Permeability to Oxygen @25C x10-13 cm3. cm cm-2 s-1 Pa-1 0.1-0.2
Permeability to Water @38C x10-13 cm3. cm cm-2 s-1 Pa-1 1000-2000
Tensile modulus - Longitudinal GPa 0.6-1.0
Tensile modulus - Transverse GPa 0.8-1.2
Tensile strength - Longitudinal MPa 25-30
Tensile strength - Transverse MPa 25-30
All information and technical data are given as a guide only. Although every effort has been made to ensure that the information is correct, no warranty is given as to its completeness or accuracy.

Buy Polyhydroxybutyrate/Polyhydroxyvalerate 8% - Biopolymer on-line

We stock and supply the following standard forms:
Film
Film

Choose a form to search our on-line catalog  

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