A structural study of polyelectrolyte gels in a unidirectionally swollen state

Temperature and pH-dependent swelling and copper(ii) adsorption of poly(N-isopropylacrylamide) copolymer hydrogel

“…2D SAXS data was converted to 1D intensity I(q) as a function of the scattering vector q [q ¼ (4p/l)sin q] by circular averaging, where 2q is the scattering angle. 23,24 Temperature was controlled by a Linkam hot stage, and the sample was equilibrated at each temperature for 20 min before measurement. Fully swollen hydrogels and dehydrated hydrogels with a dimension of 10 Â 10 Â 1.0 mm 3 were used for SAXS analysis.…”

A strong and tough interpenetrating network hydrogel with ultrahigh compression resistance

“…The distance from sample to detector was 5015 mm and the X-ray wavelength was l ¼ 0.124 nm. The 2D SAXS data were converted to 1D intensity I(q) as a function of the scattering vector q [q ¼ (4p/l)sin q] by circular averaging, [26][27][28] where 2q is the scattering angle. Fully swollen hydrogels with a cut dimension of 50 Â 50 Â 1.0 mm 3 were used for SAXS analysis.…”

“…Because synchrotron radiation SAXS has been a powerful tool to study the structure of hydrogels, 26,[30][31][32][33] it was used to analyze the microstructure of the IPN hydrogels in this study. Fig.…”

pH and temperature responsive hydrogels of poly(2-acrylamido-2-methyl-1-propanesulfonic acid-co-methacrylic acid): Synthesis and swelling characteristics

“…From thermo gravimetric studies it has also been reported that desulphonation increases as the AMPS content in the copolymer is increased (17). Hydrogels based on N-isopropylacrylamide/2-acrylamido-2-methylpropane sulfonic acid (NIPA/AMPS) are reported to exhibit microphase separation at high temperatures based on small angle X-ray scattering (SAXS) (18). It has been reported that hydrogels based on poly (2-acrylamido-2-methyl-1-propanesulfonicacid-codimethylacrylamide) have played a key role in inducing chondrogenic differentiation of ATDC5 cells cultured in the differentiation medium (19).…”