Biodegradable Polyurethanes Cross-Linked by Multifunctional Compounds

Title:Biodegradable Polyurethanes Cross-Linked by Multifunctional Compounds

Volume: 14 Issue: 6

Author(s): Joanna Brzeska*

Affiliation:

• Department of Chemistry and Commodity Industrial Science, Faculty of Enterpreneurship and Quality Science, Gdynia Maritime University, 83 Morska Street, 81-225 Gdynia,Poland

Keywords: Biodegradability, cross-linked structure, cross-linkers, multiisocyanate, polyaddition, polyols, polyurethane synthesize.

Abstract: Background: Cross-linking structure of polyurethanes determines no degradability of these materials. However, introducing the hydrolysable substrates (of natural or synthetic origin) into the cross-linked polyurethanes structure makes them biodegradable. Moreover compounds (such as polycaprolactone triol, glycerin, lysine triisocyanate, etc.) that are used for polyurethane cross-linking are degraded in non-toxic products. All these kinds of compounds can be introduced into soft or hard segments via urethane bonds.

Objective: The review focuses on kind of multifunctional polyols and isocyanates, and low molecular crosslinkers used for cross-linked polyurethanes obtaining. These compounds are natural substrates (in the native state or after modification) or are synthetic compounds with degradable linkages. They belong to polyesters, plant oils, proteins, saccharides, and others (e.g. lignocellulosic materials), and they are synthesized chemically or via biosynthesis by algae, plants, microorganisms, and by animals.

Conclusion: Incorporation of degradable groups (such as ester moieties) into the polymer structure, and using of substrates with the structure known and metabolized by microorganisms for soft or hard segments building, facilitate degradation of cross-linked polyurethanes.

Cite this article as:

Brzeska Joanna*, Biodegradable Polyurethanes Cross-Linked by Multifunctional Compounds, Current Organic Synthesis 2017; 14 (6) . https://dx.doi.org/10.2174/1570179414666161115155149