|
|
|
|
| LEADER |
01000naa a22002652 4500 |
| 001 |
NLM179306685 |
| 003 |
DE-627 |
| 005 |
20231223153548.0 |
| 007 |
cr uuu---uuuuu |
| 008 |
231223s2008 xx |||||o 00| ||eng c |
| 024 |
7 |
|
|a 10.1021/la704054h
|2 doi
|
| 028 |
5 |
2 |
|a pubmed24n0598.xml
|
| 035 |
|
|
|a (DE-627)NLM179306685
|
| 035 |
|
|
|a (NLM)18452324
|
| 040 |
|
|
|a DE-627
|b ger
|c DE-627
|e rakwb
|
| 041 |
|
|
|a eng
|
| 100 |
1 |
|
|a Matsuda, Tsuyoshi
|e verfasserin
|4 aut
|
| 245 |
1 |
0 |
|a Salt effect on complex formation of neutral/polyelectrolyte block copolymers and oppositely charged surfactants
|
| 264 |
|
1 |
|c 2008
|
| 336 |
|
|
|a Text
|b txt
|2 rdacontent
|
| 337 |
|
|
|a ƒaComputermedien
|b c
|2 rdamedia
|
| 338 |
|
|
|a ƒa Online-Ressource
|b cr
|2 rdacarrier
|
| 500 |
|
|
|a Date Completed 22.07.2008
|
| 500 |
|
|
|a Date Revised 28.05.2008
|
| 500 |
|
|
|a published: Print-Electronic
|
| 500 |
|
|
|a Citation Status PubMed-not-MEDLINE
|
| 520 |
|
|
|a The salt effect on the complex formation of poly(acrylamide)- block-poly(sodium acrylate) (PAM- b-PAA) as a neutral-anionic block copolymer and dodecyltrimethylammonium bromide (DTAB) as a cationic surfactant at different NaBr concentrations, CNaBr, was investigated by turbidimetric titration, steady-state fluorescence spectroscopy, and dynamic light scattering. At C NaBr < 0.25 M, DTAB molecules may form micelle-like aggregates on PAM- b-PAA chains to form a PAM- b-PAA/DTAB complex above the critical surfactant concentration C critical for the onset of complex formation. In the region of relatively high turbidity, a larger complex is likely to form a core-shell structure, of which the core is a dense and disordered microphase made of surfactant micelles connected by the PAA blocks. The corona was a diffuse shell of PAM chains, and it ensured steric stability. At CNaBr = 0.25 M, a higher electrostatic intermicellar repulsion and intercomplex repulsion induced by a large amount of bound DTAB micelles may lead to a redissolution of large colloidal complexes into intrapolymer complexes. Moreover, a salt-enhancing effect on the complex formation was observed in the PAM- b-PAA/DTAB system; the critical surfactant concentration decreased with increasing salt concentration at CNaBr < 0.10 M. The salt-enhancing effect is due to the larger increase of interaction in comparison to the screening of the interaction
|
| 650 |
|
4 |
|a Journal Article
|
| 700 |
1 |
|
|a Annaka, Masahiko
|e verfasserin
|4 aut
|
| 773 |
0 |
8 |
|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1992
|g 24(2008), 11 vom: 03. Juni, Seite 5707-13
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnns
|
| 773 |
1 |
8 |
|g volume:24
|g year:2008
|g number:11
|g day:03
|g month:06
|g pages:5707-13
|
| 856 |
4 |
0 |
|u http://dx.doi.org/10.1021/la704054h
|3 Volltext
|
| 912 |
|
|
|a GBV_USEFLAG_A
|
| 912 |
|
|
|a SYSFLAG_A
|
| 912 |
|
|
|a GBV_NLM
|
| 912 |
|
|
|a GBV_ILN_22
|
| 912 |
|
|
|a GBV_ILN_350
|
| 912 |
|
|
|a GBV_ILN_721
|
| 951 |
|
|
|a AR
|
| 952 |
|
|
|d 24
|j 2008
|e 11
|b 03
|c 06
|h 5707-13
|