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Preparation of novel hydrophobic magnetic Fe 3 O 4 /waterborne polyurethane nanocomposites
Author(s) -
Yang Lei,
Fu Qi,
Fu Heqing
Publication year - 2020
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.48546
Subject(s) - nanocomposite , polyurethane , materials science , thermal stability , ultimate tensile strength , prepolymer , polycaprolactone , composite material , polymer chemistry , chemical engineering , polymer , engineering
Magnetic Fe 3 O 4 /waterborne polyurethane nanocomposites were synthesized based on waterborne polyurethane (WPU) and amino‐functionalized Fe 3 O 4 by in situ polymerization. The Fe 3 O 4 nanoparticle was found to be uniformly distributed in Fe 3 O 4 /WPU nanocomposites with linear or crosslinked structure. In addition, the formation mechanism and magnetic conduction mechanism of stable inorganic–organic nanocomposites were discussed. The experimental results showed that the thermal stability, magnetic, and mechanical properties of magnetic Fe 3 O 4 /waterborne polyurethane nanocomposites were improved by amino functionalized Fe 3 O 4 . Furthermore, the defoaming property of the emulsion and the hydrophobic property of magnetic Fe 3 O 4 /waterborne polyurethane nanocomposites were improved by the 1‐hexadecanol‐terminated prepolymer. What more, polycaprolactone (PCL)‐based Fe 3 O 4 /WPU nanocomposites have excellent mechanical properties (The tensile strength is over 30 MPa, the elongation rate is above 300%.) and magnetic properties. Magnetic Fe 3 O 4 /waterborne polyurethane nanocomposites will be used in the field of hydrophobic and microwave absorbent materials. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2020 , 137 , 48546.