Eur. Phys. J. Appl. Phys.
Volume 69, Number 1, January 2015
|Number of page(s)||6|
|Section||Biophysics and Biosensors|
|Published online||07 January 2015|
Universality of elasticity on PAAM-NIPA copolymer gels
Faculty of Science and Letters, Piri Reis University, 34940
Tuzla, Istanbul, Turkey
2 Faculty of Engineering and Natural Sciences, Kadir Has University, 34083 Cibali, Istanbul, Turkey
a e-mail: email@example.com
Revised: 10 November 2014
Accepted: 27 November 2014
Published online: 7 January 2015
Polyacrylamide (PAAm)-N-isopropylacrylamide (NIPA) copolymers were prepared via free radical crosslinking copolymerization with different molar of NIPA varying in the range between 0 and 2 M. The mechanical properties of swollen PAAm-NIPA copolymers were characterized by the compressive testing technique. It is understood that the compressive elastic modulus was found to increase by increasing NIPA contents, keeping temperature constant at 30 °C. The critical exponent of elasticity, y above the critical NIPA concentration is found to be as 0.74, which is consistent with the suggestions of percolation for superelastic percolation network (SEPN) and the critical theory for PAAm-NIPA copolymers.
© EDP Sciences, 2015
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