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Improvement in mechanical properties of polyurethane‐urea nanocomposites by using modified SiO 2 nanoparticles
Author(s) -
Yarmohammadi Masoud,
Khalaf Adeli Alireza,
Zamani Pedram Mona,
Shahidzadeh Mansour,
Pirouzfar Vahid
Publication year - 2018
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.46707
Subject(s) - polyurethane , materials science , nanocomposite , nanoparticle , surface modification , dynamic mechanical analysis , chemical engineering , composite material , urea , polymer chemistry , polymer , nanotechnology , organic chemistry , chemistry , engineering
Poly(propylene glycol) (PPG)‐based nanocomposites have been prepared one shot using various contents of functionalized SiO 2 nanoparticle as filler‐crosslinker agent. Triethoxy silyl propane‐1‐amine has been used as coupling agent for functionalization of SiO 2 nanoparticle to improve its reactivity. The results revealed that the mechanical properties of the samples have been improved due to the functionalized SiO 2 ‐nanoparticle effect on chemical and three‐dimensional physical crosslinking of the polyurethane–urea nanocomposites. Addition of the functionalized nanoparticle increased strength from 0.75 to 1.58 MPa in comparison to polyurethane sample. Moreover, storage moduli of PPG‐based polyurethane sample reduced in higher than room temperatures. While, using functionalized nanoparticle improves elasticity from 0.88 MPa in polyurethane sample to 2.84 MPa in polyurethane–urea nanocomposites. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018 , 135 , 46707.