Biomaterial

from Wikipedia, the free encyclopedia
Dowels made of bioplastic ( polyamide )

The term biomaterial was created as a generic term for materials that are based entirely or to a relevant extent on renewable raw materials ( natural products or wood ). The term "bio-material" is not regulated by law and the term "bio-plastic" is not protected, so both are often not used uniformly.

Of biomaterials includes the biocomposites , which essentially contained natural fiber reinforced plastics and wood-plastic composites (WPC, wood plastic composites) as well as bio-based plastics are divided. In addition to these new types of materials, traditional materials such as chipboard and blockboard ( wood-based materials ) also belong to the bio-materials.

The proportion of raw materials of biological origin in the end product can fluctuate greatly depending on the manufacturing and processing process; there is no fixed limit to the bio-based proportion of biomaterials.

As raw materials for bioplastics, naturally occurring polymers such as starch or cellulose , lignin and rubber or also vegetable oils or sugar come into question, but also technical biopolymers such as polylactide (PLA) or polyhydroxyalkanoates (PHAs), which are made from natural polymers by technical processes and monomers are obtained.

Individual evidence

  1. ↑ http://biowerkstoffe.fnr.de/biokunststoffe/
  2. ↑ Biomaterials at the Agency for Renewable Raw Materials (FNR)
  3. ^ Hans-Josef Endres, Andrea Siebert-Raths: Technical Biopolymers. Hanser-Verlag, Munich 2009; Page 162. ISBN 978-3-446-41683-3

Web links