@Article{JPM.2018.35.04.4,
AUTHOR = {KRISHAN KUMAR PATEL, RAJESH PUROHIT, S.A.R. HASHMI, RITESH KUMAR GUPTA},
TITLE = {Influence of Moisture on Shape Memory and Mechanical Properties of Microwave-induced Shape Memory Polyurethane (PU)/graphene Nanoplatelets (GNPs) Composite},
JOURNAL = {Journal of Polymer Materials},
VOLUME = {35},
YEAR = {2018},
NUMBER = {4},
PAGES = {449--462},
URL = {http://www.techscience.com/jpm/v35n4/56168},
ISSN = {0976-3449},
ABSTRACT = {Microwave-induced shape memory polymer (Polyurethane)/Graphene nanoplatelets composite
were prepared in micro-compounder. When samples exposed in moisture (immersed in water),
the thermo-mechanical and shape memory properties such as Tensile strength, glass transition
temperature, storage modulus, stretch and recovery strength were decreased. The surface
morphology and dispersion of GNPs in PU matrix were characterized by using the Atomic Force
Microscopy (AFM), X-ray Diffraction (XRD) and Field Emission Scanning Electron Microscopy
(FE-SEM). Further, we found that the PU specimen has no shape recovery during MV irradiations
without moisture exposed sample. But moisture exposed PU sample shows shape recovery.
With increasing water immersion time (Days) of the PU and 1 GPU samples the MV-induced
shape recovery was increased. Because the absorbed water molecules in samples act as a
dielectric note heating source for MV irradiations. So that its novel approach which may treat as
a self-responsive shape memory polymer components when exposed long days in moisture.},
DOI = {10.32381/JPM.2018.35.04.4}
}