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Synthesis and characterization of linear waterborne poly(ethyl acrylate‐urethane) prepared from poly(ethyl acrylate) diol via atom transfer radical polymerization
Author(s) -
Li Jian,
Wang Hongdan,
Sun Zhidan,
Fan Ruixiang,
Ren Qiang,
Yu Qiang
Publication year - 2012
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.36485
Subject(s) - ethyl acrylate , polymer chemistry , atom transfer radical polymerization , isophorone diisocyanate , acrylate , diol , radical polymerization , materials science , methyl acrylate , gel permeation chromatography , polymerization , chemistry , nuclear chemistry , organic chemistry , copolymer , polyurethane , polymer
Linear waterborne poly(ethyl acrylate‐urethane)s (PEA‐Us) were synthesized by reacting a poly (ethyl acrylate) diol (HO‐PEA‐OH) with isophorone diisocyanate (IPDI) and 2,2‐bis(hydroxymethyl) propionic acid (DMPA). The poly(ethyl acrylate) (HO‐PEA‐Br) was prepared by atom transfer radical polymerization of ethyl acrylate with a designed molecular weight ( M n ) of about 2000 and the hydroxyl (OH) end capped poly(ethyl acrylate) (HO‐PEA‐OH) was obtained by substituting the bromo end group with N‐ ethanol methyl amine. The HO‐PEA‐OH of M n 2000 with OH functionality of about 1.92 and the linear waterborne PEA‐U with M n of about 13,300 were obtained and characterized by hydrogen nuclear magnetic resonance ( 1 H‐NMR), gel permeation chromatography, thermo gravimetric analysis, and differential scanning calorimetry. When the ratio of isocyanate to hydroxyl group (NCO/OH) was 1.4 and DMPA was 5 wt %, the waterborne PEA‐U was a tough material with a tensile strength of 4.9 MPa, elastic modulus of 31.9 N/mm 2 and elongation at break of about 286%, which showed its potential applications in many fields. © 2012 Wiley Periodicals, Inc. J Appl Polym Sci, 2012