http://polymerdatabase.com/polymer%20physics/Flory%20Rehner.html WebJul 30, 2024 · In this work, the Flory–Rehner equation is revisited to evidence the dependency of the interaction parameter on both polymer volume fraction and temperature. Such an analysis to estimate the true functionality of the interaction parameter is based on experimental data reported in the literature for the swelling behavior of NIPA hydrogels …
Comparison Between Peroxide and Radiation Crosslinking of …
WebCalculation of Swelling for a Gel. The Flory-Rehner Equation (Flory's first book) describes swelling of network polymers as a function of the enthalpic interaction parameter between the polymer unit and the solvent, c, the molar volume of the solvent, V 1, and the molecular weight between crosslink sites, n. where v 2 is the volume fraction of polymer … WebToward this end, pNIPAAm gels have been created with 1x10-7 to 2x10-³ mol/cm³ crosslink density and characterized. This was done by first examining its bulk, unattached swelling ability and then by evaluating its microscale properties as a surfaceconfined monolithe. ... Crosslinked polymer, thermoresponsive polymers, Flory-Rehner theory, soft ... diagnosing \\u0026 treating sick fish
Polymers Free Full-Text Effect of the High-Pressure Hydrogen …
WebCrosslink density also was determined from equilibrium stress- strain measurements. A strip sample with gauge marks was loaded with a small weight, and after 30 minutes, the deformation ... P.J. Flory, J. Rehner, J. Chem. Phys. 1 1, 521 (1943) F.P. Baldwin, G. Ver Strate, Rubber Chem. Technol. 45, 709 (1972) Title ... WebCrosslink density The swelling test was carried out according to ASTM D471 where a test piece weighing about 0.2 g was cut from NR latex films. The films were immersed in pure toluene in universal bottle before ... crosslink density [X] was determined by the Flory-Rehner theory in equation (2) [4]. [ ] = [ ( ) ] ( ) (2) where V Webcrosslinking copolymerization with acrylic acid and acrylamide have been investi-gated and its crosslinking ef” ciency has been estimated either by the Flory– Rehner theory or by correlation of the equilibrium swelling values of the polyacrylamide gels with those obtained from BIS as the crosslinking agent. 2. EXPERIMENTAL 2.1. Materials cineworld unlimited discounts