A numerical model for ultrasonic measurements of swelling and mechanical properties of a swollen PVA hydrogel

Synergistic effect of poly(acrylamide)-incorporated poly(L-ascorbic acid) hydrogels in controlled release and wound dressings

“…The swelling data vs. time was fitted to the above equation using the linear least-squares method and the swelling power, n, was determined. [43] For radiation induced hydrogels, ln F vs. ln t graphs are plotted and representative results are shown in Figure 5(b). Both of n exponents and k parameters are calculated from the slopes and intercepts of the lines, respectively, and are listed in Table 2.…”

Biodegradable Hydrogel as Delivery Vehicle for the Controlled Release of Pesticide

“…To characterize the hydrogels, the most common techniques used are water uptake [Lohakan et al, 2010;; mechanical properties [Baker et al, 2010;Jiang et al, 2010;Xu et al, 2010]; scanning electron microscopy (SEM) [Moura et al, 2009;Ferrer et al, 2010;Gao et al, 2010;Li et al, 2010;Zhao et al, 2010]; Fourier transform infrared (FTIR) spectroscopy [Kim et al, 2010;; nuclear magnetic resonance (NMR) [Yin et al, 2010]; differential scanning calorimetry (DSC) [Castelli et al, 2008;Rao et al, 2010]; thermogravimetric analysis (TGA) [Rodkate et al, 2010]; structural properties [Panic et al, 2010] through average molar mass between crosslinks (M c ), crosslink density (q), and number of elastically effective chains, completely included in a perfect network, per unit volume (V e ); and controlled release of drugs [Koutroumanis et al, 2010;Liu & Lin, 2010;Sajeesh et al, 2010;Tanigo et al, 2010]; and agrochemicals [Saraydin et al, 2000;Bajpai & Giri, 2003;Bajpai et al, 2006;Wang et al, 2007;Pourjavadi et al, 2009].…”