| dc.contributor | Universidade Estadual Paulista (UNESP) | |
| dc.creator | Tiera, M. J. | |
| dc.creator | Tiera, VAD | |
| dc.creator | de Toledo, E. C. | |
| dc.creator | de Sena, G. L. | |
| dc.date | 2014-05-20T15:25:14Z | |
| dc.date | 2016-10-25T17:59:37Z | |
| dc.date | 2014-05-20T15:25:14Z | |
| dc.date | 2016-10-25T17:59:37Z | |
| dc.date | 2000-11-01 | |
| dc.date.accessioned | 2017-04-05T23:51:14Z | |
| dc.date.available | 2017-04-05T23:51:14Z | |
| dc.identifier | Colloid and Polymer Science. New York: Springer-verlag, v. 278, n. 11, p. 1052-1060, 2000. | |
| dc.identifier | 0303-402X | |
| dc.identifier | http://hdl.handle.net/11449/35682 | |
| dc.identifier | http://acervodigital.unesp.br/handle/11449/35682 | |
| dc.identifier | 10.1007/s003960000367 | |
| dc.identifier | WOS:000165461000004 | |
| dc.identifier | http://dx.doi.org/10.1007/s003960000367 | |
| dc.identifier.uri | http://repositorioslatinoamericanos.uchile.cl/handle/2250/879349 | |
| dc.description | The behaviour of hydrophobically modified poly(allylammonium) chloride having octyl, decyl, dodecyl and hexadecyl side chains has been studied in aqueous solution using fluorescence emission techniques. Micropolarity studies using the I-1/I-3 ratio of the vibronic bands of pyrene show that the formation of hydrophobic microdomains depends on both the length of the side chain and the polymer concentration. The I-1/I-3 ratio of the polymers with low hydrophobe content (less than 5% mel) changes substantially when reaching a certain concentration. These changes are assigned to aggregation originating from interchain interactions. This behaviour is also confirmed by the behaviour of the monomer/excimer emission intensities of pyrene- dodecanoic acid used as a probe. For polymers having dodecyl side chains and hydrophobe contents higher than 10%, aggregates are formed independently of the polymer concentration. Anisotropy measurements show that microdomains resulting from the inter- and/or intramolecular interactions are similar to those observed for cationic surfactants. Viscosity measurements show that the coil dimensions are substantially decreased for the polymers having high hydrophobe contents, indicating intramolecular associations. | |
| dc.language | eng | |
| dc.publisher | Springer | |
| dc.relation | Colloid and Polymer Science | |
| dc.rights | info:eu-repo/semantics/closedAccess | |
| dc.subject | cationic amphiphilic polymers | |
| dc.subject | aggregation | |
| dc.subject | pyrene fluorescence spectroscopy | |
| dc.subject | hydrophobic microdomains | |
| dc.title | Aggregation behaviour of hydrophobically modified poly(allylammonium) chloride | |
| dc.type | Otro | |
