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Synthesis and properties of water soluble polyurethanes based on poly(ethylene glycol)
Author(s) -
Doseva Veneta,
Shenkov Stoicho,
Vasilev Sasho,
Baranovsky Vladimir Y.
Publication year - 2004
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.13604
Subject(s) - polymer chemistry , ethylene glycol , differential scanning calorimetry , crystallinity , peg ratio , condensation polymer , polyurethane , materials science , chemistry , chemical engineering , polymer , organic chemistry , composite material , physics , finance , engineering , economics , thermodynamics
Abstract Water soluble polyurethanes (WSPU)s have been prepared by polycondensation of isophorondiisocyanate and tolylene‐2,4‐diisocyanate with poly(ethylene glycol)s (PEGs) of molecular weights 400, 600, and 1,000. The physicochemical properties of the WSPUs depend on the hydrophilic–hydrophobic balance in their polymeric chain, i.e., the properties are determined by relative density of the hydrophobic diisocyanate residues in WSPU. X‐ray and differential scanning calorimetry studies show that the WSPUs have a degree of crystallinity lower than that of the pure PEGs of the same molecular weights. Like the PEGs the WSPUs prepared form interpolymer complexes with polyacrylic (PAA) and polymethacrylic (PMAA) acids. These complexes are more stable than the (PEG.PAA) and (PEG. PMAA) complexes. The novel compounds can be considered as modified linear PEGs. © 2004 Wiley Periodicals, Inc. J Appl Polym Sci 91: 3651–3658, 2004