NDLI: Low temperature shape memory characteristics of segmented polyurethane-nanoclay composites

Content Provider	Springer Nature Link
Author	Gupta, Y. N. Bhave, T. Abbas, S. M. Sharma, R. B. Setua, D. K.
Copyright Year	2016
Abstract	Nanocomposites of the segmented polyurethane elastomer with different grades of Cloisite$^{®}$ nanoclay have been prepared. Different characterization techniques viz., X- ray diffraction, scanning electron microscopy, atomic force microscopy and Fourier transform infrared spectroscopy have been utilized to investigate the nature of physico-chemical interaction and dispersion of the nanoclay with the polymer matrix. The dimensional stability and the shape memory characteristics of the nanocomposites have been estimated using thermomechanical analysis between −80 and 20 °C by performing two sets of experiments. The experimental parameters e.g., initial temperature, isothermal time and final temperature were varied keeping the applied load common i.e., between 0.25 and 0.75 N in steps of 0.25 N for both sets of experiments. While the dimensional stability of the nanocomposites was found to improve significantly due to addition of nanoclay, the shape fixity and the shape recovery values were found to be almost reversible under the applied loading/de-loading conditions.
Starting Page	1449
Ending Page	1461
Page Count	13
File Format	PDF
ISSN	13886150
Journal	Journal of thermal analysis
Volume Number	124
Issue Number	3
e-ISSN	15882926
Language	English
Publisher	Springer Netherlands
Publisher Date	2016-01-30
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Nanoclay Cloisite$^{®}$ Segmented polyurethane Polymer nanocomposite Shape memory polymer Physical Chemistry Analytical Chemistry Polymer Sciences Inorganic Chemistry Measurement Science and Instrumentation
Content Type	Text
Resource Type	Article
Subject	Physical and Theoretical Chemistry Condensed Matter Physics

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