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Biodegradable magnetic‐sensitive shape memory poly(ɛ‐caprolactone)/ F e 3 O 4 nanocomposites
Author(s) -
Gao Yuliang,
Zhu Guangming,
Xu Shuogui,
Ma Tuotuo,
Nie Jing
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.45652
Subject(s) - nanocomposite , materials science , caprolactone , prepolymer , silane , polymerization , nanoparticle , magnetic nanoparticles , biodegradation , chemical engineering , polymer chemistry , composite material , polymer , nuclear chemistry , nanotechnology , chemistry , organic chemistry , polyurethane , engineering
A novel biodegradable magnetic‐sensitive shape memory poly(ɛ‐caprolactone) nanocomposites, which were crosslinked with functionalized Fe 3 O 4 magnetic nanoparticles (MNPs), were synthesized via in situ polymerization method. Fe 3 O 4 MNPs pretreated with γ‐(methacryloyloxy) propyl trimethoxy silane (KH570) were used as crosslinking agents. Because of the crosslinking of functionalized Fe 3 O 4 MNPs with poly(ɛ‐caprolactone) prepolymer, the properties of the nanocomposites with different content of functionalized Fe 3 O 4 MNPs, especially the mechanical properties, were significantly improved. The nanocomposites also showed excellent shape memory properties in both 60 °C hot water and alternating magnetic field ( f = 60, 90 kHz, H = 38.7, 59.8 kA m −1 ). In hot water bath, all the samples had shape recovery rate ( R r ) higher than 98% and shape fixed rate ( R f ) nearly 100%. In alternating magnetic field, the R r of composites was over 85% with the highest at 95.3%. In addition, the nanocomposites also have good biodegradability. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018 , 135 , 45652.