Influence of mycosporine-like amino acids and gadusol on the rheology and Raman spectroscopy of polymer gels

BACKGROUND: The amphiphilic nature of polymers allows them to be widely incorporated as carriers in different pharmaceutical applications since they are able to work as vehicles for hydro-or lipo-soluble actives. OBJECTIVE: The aim of this study was to determine the rheological behavior and vibratio...

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Autor principal: Tosato, M.G
Otros Autores: Orallo, D.E, Churio, M.S, Martin, A.A, Soto, C.A.T, Dicelio, L.E
Formato: Capítulo de libro
Lenguaje:Inglés
Publicado: IOS Press 2014
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Acceso en línea:Registro en Scopus
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024 7 |2 cas  |a poloxamer, 9003-11-6; amino acid, 65072-01-7; carbon, 7440-44-0; glycine, 56-40-6, 6000-43-7, 6000-44-8; Amino Acids; Antioxidants; Carbon; Cyclohexanols; Cyclohexanones; Cyclohexylamines; gadusol; Gels; Glycine; Poloxamer; Polymers; porphyra-334; shinorine 
040 |a Scopus  |b spa  |c AR-BaUEN  |d AR-BaUEN 
030 |a BRHLA 
100 1 |a Tosato, M.G. 
245 1 0 |a Influence of mycosporine-like amino acids and gadusol on the rheology and Raman spectroscopy of polymer gels 
260 |b IOS Press  |c 2014 
270 1 0 |m Dicelio, L.E.; Universidad de Buenos Aires, INQUIMAEArgentina 
506 |2 openaire  |e Política editorial 
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520 3 |a BACKGROUND: The amphiphilic nature of polymers allows them to be widely incorporated as carriers in different pharmaceutical applications since they are able to work as vehicles for hydro-or lipo-soluble actives. OBJECTIVE: The aim of this study was to determine the rheological behavior and vibrational spectral variations of two hydrophilic gels prepared with Poloxamer 407 (PO) or Pluronic F-127 (PL) with the addition of the actives mycosporine-like amino acids and gadusol. METHODS: The structures of these polymers in two different concentrations (20% w/w and 27% w/w) were characterized by rheological studies and Raman spectroscopy. RESULTS: Gels prepared with higher polymer concentration showed larger G′ (storage modulus) values. The C-C stretch and the CH<inf>2</inf> rocking predominated in the gels containing PL (20% w/w) and this correlated with a less viscous behavior. The mixture of the actives induced higher contributions of Raman peaks related to trans conformation of the C-C bonds located in hydrophilic polymer blocks, whereas the same peaks decreased in the sample containing only gadusol. CONCLUSIONS: Larger tensile strength and elastic component were observed upon increasing polymer concentration, thus evidencing polymer-polymer and/or polymer-polymer-actives interactions. The presence of the actives affected the mechanical properties of the polymer gels. Gadusol particularly seems to alter the conformation of the polymer chains by favoring gauche orientations, in parallel with rising viscoelastic parameters. More stretched arrangements of the polymer are probably induced in the presence of larger concentration of actives, due to specific interactions with their hydrophilic groups. © 2014-IOS Press and the authors.  |l eng 
593 |a Universidad de Buenos Aires, INQUIMAE, Buenos Aires, Argentina 
593 |a Facultad de Ciencias Exactas, Universidad Nacional de Mar Del Plata, Mar del Plata, Argentina 
593 |a Laboratório de Espectroscopia Vibracional Biomédica, Universidade Do Vale Do Paraíba, Sao José dos Campos, Brazil 
690 1 0 |a GADUSOL 
690 1 0 |a MYCOSPORINE-LIKE AMINO ACIDS 
690 1 0 |a TRIBLOCK COPOLYMERS 
690 1 0 |a VISCOELASTIC 
690 1 0 |a AMINO ACID DERIVATIVE 
690 1 0 |a ANTIOXIDANT 
690 1 0 |a GADUSOL 
690 1 0 |a POLOXAMER 
690 1 0 |a PORPHYRA 334 
690 1 0 |a SHINORINE 
690 1 0 |a UNCLASSIFIED DRUG 
690 1 0 |a AMINO ACID 
690 1 0 |a ANTIOXIDANT 
690 1 0 |a CYCLOHEXANOL DERIVATIVE 
690 1 0 |a CYCLOHEXANONE DERIVATIVE 
690 1 0 |a CYCLOHEXYLAMINE DERIVATIVE 
690 1 0 |a GADUSOL 
690 1 0 |a GEL 
690 1 0 |a GLYCINE 
690 1 0 |a POLYMER 
690 1 0 |a PORPHYRA-334 
690 1 0 |a SHINORINE 
690 1 0 |a ANTIOXIDANT ACTIVITY 
690 1 0 |a ARTICLE 
690 1 0 |a CHEMICAL STRUCTURE 
690 1 0 |a CONFORMATIONAL TRANSITION 
690 1 0 |a CONTROLLED STUDY 
690 1 0 |a COVALENT BOND 
690 1 0 |a CROSS LINKING 
690 1 0 |a FEMALE 
690 1 0 |a FLOW KINETICS 
690 1 0 |a GEL 
690 1 0 |a GELATION 
690 1 0 |a HYDROPHILICITY 
690 1 0 |a MOLECULAR WEIGHT 
690 1 0 |a NONHUMAN 
690 1 0 |a PORPHYRA 
690 1 0 |a RAMAN SPECTROMETRY 
690 1 0 |a TENSILE STRENGTH 
690 1 0 |a VISCOSITY 
690 1 0 |a ANALOGS AND DERIVATIVES 
690 1 0 |a CHEMISTRY 
690 1 0 |a FLOW KINETICS 
690 1 0 |a GEL 
690 1 0 |a PROCEDURES 
690 1 0 |a TEMPERATURE 
690 1 0 |a VIBRATION 
690 1 0 |a AMINO ACIDS 
690 1 0 |a ANTIOXIDANTS 
690 1 0 |a CYCLOHEXANOLS 
690 1 0 |a CYCLOHEXANONES 
690 1 0 |a CYCLOHEXYLAMINES 
690 1 0 |a GELS 
690 1 0 |a GLYCINE 
690 1 0 |a HYDROGEN-ION CONCENTRATION 
690 1 0 |a POLOXAMER 
690 1 0 |a POLYMERS 
690 1 0 |a RHEOLOGY 
690 1 0 |a SPECTRUM ANALYSIS, RAMAN 
690 1 0 |a TEMPERATURE 
690 1 0 |a VIBRATION 
690 1 0 |a VISCOSITY 
650 1 7 |2 spines  |a CARBON 
650 1 7 |2 spines  |a PH 
650 1 7 |2 spines  |a CARBON 
700 1 |a Orallo, D.E. 
700 1 |a Churio, M.S. 
700 1 |a Martin, A.A. 
700 1 |a Soto, C.A.T. 
700 1 |a Dicelio, L.E. 
773 0 |d IOS Press, 2014  |g v. 51  |h pp. 315-328  |k n. 4-5  |p Biorheology  |x 0006355X  |t Biorheology 
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