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Goodfellow Polyhydroxybutyrate / Polyhydroxyvalerate (PHB 92/PHV 8)


Subcategory: Thermoplastic

Material Notes:
General Description:

See also PHB. PHB/PHV copolymers are used in preference to PHB homopolymer for general purposes (e.g. molding 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 biodegradable 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.

Information provided by Goodfellow.

Available Properties
  • Density
  • Tensile Strength, Yield
  • Elongation at Break
  • Tensile Modulus
  • Izod Impact, Unnotched
  • Electrical Resistivity
  • Dielectric Constant
  • Specific Heat Capacity
  • Thermal Conductivity
  • Chemical Resistance - Alcohols
  • Chemical Resistance - Alkalis
  • Chemical Resistance - Dilute Acids
  • Chemical Resistance - Greases and Oils
Property Data

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