PHB
PHB (Polyhydroxyalkanoate)
PHB(Polyhydroxyalkanoate), is a PHA blend that 100% biodegradable bioplastic made by microorganisms using renewable resources. The polymer is derived from starch found in corn, potatoes, maize, tapioca root and vegetable oils. It is an emerging bioplastic that can be used in a wide range of applications to replace traditional petroleum-based plastics, these include straws, cups, lids, bottles, bags, utensils, diaper linings, plates, wipes, toys, garbage bags, seals, labels and glues.
PHB biopolymers can currently can be broken down in industrial compost systems and some versions can achieve home composability.
The material is a natural renewable based bioplastic that can be used as a substitute for traditional Polypropylene (PP) and Polyethylene (PE. The material is quite versatile and ranges from being stiff and brittle to flexible.
Circular Features
Raw Material
The starch required to make PHB biopolymers are sourced from a variety of renewable natural plant based resources.
Afterlife Solution
PHB Biopolymers are biodegradable and can be industrially composted.
Issues
As with any material there are issues worth considering before selection, with starch based biopolymers these are;
Raw materials for bio polymers are often sourced from mono-crops which can have a negative effect on the local environment over time.
PHB biopolymers can cause contamination problems when recycled in traditional recycled mechanisms. This is a biodegradable material that needs to be processed correctly afterlife.
Careful consideration needs to be placed on the application of PHB to ensure it is used to its full potential.