Browsing by Author "BRAVO, J"
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- ItemPOLYMER CONFORMATION AND VISCOMETRIC BEHAVIOR .7. SYNTHESIS AND SOLUTION PROPERTIES OF POLY(MONOETHYLPHENYL ITACONATE)(1993) GARGALLO, L; RADIC, D; BRUCE, D; BRAVO, JMonoethylphenyl itaconate was synthesized and polymerized. Polymer fractions were characterized by viscometry and light scattering. Thermodynamic and dimensional parameters were determined and calculated. The results are compared with those of poly(benzyl itaconate)s previously reported.
- ItemPROPERTIES OF POLYELECTROLYTES .2. POLY(MONOETHYL ITACONATE), CONFORMATIONAL AND VISCOMETRIC BEHAVIOR IN DILUTE-SOLUTION(1993) GARGALLO, L; YAZDANIPEDRAM, M; RADIC, D; HORTA, A; BRAVO, JThe dilute solution behaviour of poly(monoethyl itaconate) (PMEI) has been studied in 2-ethoxyethanol, methanol, dimethylsulfoxide and water, at 298 K, by intrinsic viscosity and light scattering measurements, and size exclusion chromatography (SEC). Weight-average molecular weight was determined in methanol. PMEI shows typical polyelectrolyte behaviour. The Kuhn-Mark-Houwink-Sakurada relationships were established in the media studied. The conformational parameters (sigma and C(infinity)) and the thermodynamic parameter (B) were calculated. The results are compared with previous studies of poly(monomethyl itaconate).
- ItemSYNTHESIS, DILUTE-SOLUTION PROPERTIES AND CHAIN FLEXIBILITY OF POLY(DIESTERS) OF ITACONIC ACID .2. POLY(METHYL DECYL ITACONATE)(1992) LEON, A; GARGALLO, L; RADIC, D; BRAVO, J; HORTA, AThe diester of itaconic acid with decyl and methyl groups was prepared and polymerized. The dilute solution behaviour of poly(methyl decyl itaconate) poly[1-(decyloxycarbonylmethyl)-1-(methoxycarbonyl)ethylene] (PMeDI) was studied in tetrahydrofuran and 1-butanol at 298 K, by light scattering, size-exclusion chromatography, and viscometric measurements. The empirical Kuhn-Mark-Houwink-Sakurada relationships were established. The molecular parameters were calculated using one theory of the excluded volume.