Poly(vinyl alcohol)–poly(acrylic acid) interpenetrating networks. Study on phase separation and molecular motions

The rheological and thermal characteristics of freeze-thawed hydrogels containing hydrogen peroxide for potential wound healing applications

“…The relaxation observed at 165 • C is due to the relaxation in the PVA crystalline domains. This corresponds to values reported by López when using PVA with a weight average molecular weight of 94,000 (Hernández et al, 2005). The peak at 212 • C gives the melting temperature (T m ) of PVA.…”

Swelling behavior and morphological properties of semi-IPN hydrogels based on ionic and non-ionic components

“…At the end of this period, glass tubes were carefully broken and obtained hydrogel rod were cut into small discs of 0.5 cm length. The gel discs were washed several times with distilled water to remove unreacted chemicals, dried first in air and then in a vacuum oven at 37.0 • C [16,[20][21][22][23]. The average thicknesses of dried hydrogels measured with a micrometer were found in the range of 0.30-0.40 cm according to the content of the gel matrix.…”

MMTCA Recognition by Molecular Imprinting in Interpenetrating Polymer Network Hydrogels Based on Poly(acrylic acid) and Poly(vinyl alcohol)

“…Usually, polymers containing partially neutralized PAA show pH sensitivity 28. In order to determine the effect of pH on the adsorption ability of MIP‐IPN, pH = 2.0, 4.0, 7.0 and 9.0 were applied to the mixture solutions of MIP‐IPN and different concentrations of MMTCA.…”

“…For example, in order to improve the mechanical strength of a poly(acrylic acid) (PAA) gel, which mechanical strength is not good, poly(vinyl alcohol) (PVA) was interpenetrated with it. Due to the high hydrophilicity, nontoxicity, biocompatibility and biodegradability of PVA, it is utilized as an excellent water‐soluble matrix polymer for making hydrogels with certain polymers, such as PAA 27, 28. It is well known that the clinical relevance of triazole derivatives relates to the development of pharmaceuticals for the treatment of inflammation, tumor and human immunodeficiency virus 29–31.…”