Encontrados 3 documentos, a visualizar página 1 de 1
PVA−DNA Cryogel Membranes: Characterization, Swelling, and Transport Studies
Papancea, Adina; Valente, Artur J. M.; Patachia, Silvia; Miguel, Maria G.; Lindman, BjörnDouble-stranded (ds) DNA from salmon testes has been incorporated into PVA hydrogels obtained by a technique of repeated freezing and thawing. The cryogels obtained are free of potential toxic species like chemical cross-linkers, and consequently, they can be used in pharmaceutical or medical applications. These cryogels show a good mechanical resistance and a white and opaque appearance caused by a heterogeneo...
Effect of non-associated electrolyte solutions on the behaviour of poly(vinyl a...
Patachia, Sílvia; Valente, Artur J. M.; Baciu, ClaudiaThe aim of this paper is to present the behaviour of the poly(vinyl alcohol) hydrogels [PVA-HG] in sodium and potassium chlorides aqueous solutions, due to their interactions. The tested [PVA-HG]-s have been obtained by repeated freezing and thawing cycles. White, heterogeneous hydrogels have been obtained. These hydrogels exhibit a mechanical active behaviour at their contact with electrolytes aqueous solution...
Effect of different electrolytes on the swelling properties of calyx[4]pyrrole-...
Valente, Artur J. M.; Sobral, Abílio J. F. N.; Jiménez, Alfonso; Patachia, Sílvia; Oliveira, Ana R. C. B.; Lobo, Victor M. M.Calix[4]pyrrole (1) was synthesized and characterized and this macrocycle was incorporated in polyacrylamide gels. The presence of meso-octamethyl-porphyrinogen inside of gel was checked using infrared spectroscopy, differential scanning calorimetry, and swelling studies. The swelling degree of these hydrogels in equilibrium with different electrolytes (NaCl, LiCl, KCl, CaCl2 and AlCl3) was measured in a concen...
| Financiadores do RCAAP | |||||||
|
|
|
|
|
|
||