Synthesis and properties of water‐dispersible polyurethanes based on various diisocyanates and PEG as the hard segment

Water‐dispersible polyurethanes are a greener alternative to polyurethane solutions in organic solvents. Various polyurethane materials were prepared by a two‐step polymerization procedure of polypropylene glycol with Mn of 2000, polyethylene glycol with Mn of 1500, and diisocyanates with different...

Full description

Saved in:
Bibliographic Details
Published in:Journal of applied polymer science 2023-06, Vol.140 (24), p.n/a
Main Authors: Oprea, Stefan, Potolinca, Violeta Otilia
Format: Article
Language:English
Subjects:
Contact angle
Diisocyanates
Dispersion
Environmental protection
Materials science
molecular morphologies
Molecular structure
NMR
Nuclear magnetic resonance
Physical properties
Polarized light
Polyethylene glycol
Polymers
Polypropylene glycol
Polyurethane
Polyurethane resins
Segments
surface properties
thermal properties
water‐dispersible polyurethanes
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Water‐dispersible polyurethanes are a greener alternative to polyurethane solutions in organic solvents. Various polyurethane materials were prepared by a two‐step polymerization procedure of polypropylene glycol with Mn of 2000, polyethylene glycol with Mn of 1500, and diisocyanates with different chemical structures, aliphatic, cycloaliphatic and aromatic. It was investigated how the diisocyanate structure affected the molecular morphology, contact angle measurements, and physical characteristics of water‐dispersible polyurethanes. FTIR and NMR measurements showed a close relationship between the intermolecular connections and the hard segment structure, mainly of the diisocyanate used. Also, the polarized light method showed that the presence of the PEG in the hard domain improved aggregation through physical interactions due to its structural flexibility and mobility. These water‐dispersible polyurethanes can assure the use of these polyurethane materials in a broad range of applications with increased environmental protection. Water‐dispersible polyurethanes, as a greener alternative to polyurethane solutions in organic solvents, were prepared by using some diisocyanates with different chemical structures, aliphatic, cycloaliphatic and aromatic.
ISSN:0021-8995
1097-4628
DOI:10.1002/app.53948