000054384 001__ 54384 000054384 005__ 20240619092015.0 000054384 0247_ $$2DOI$$a10.1016/j.physb.2006.06.076 000054384 0247_ $$2WOS$$aWOS:000243096400219 000054384 037__ $$aPreJuSER-54384 000054384 041__ $$aeng 000054384 082__ $$a530 000054384 084__ $$2WoS$$aPhysics, Condensed Matter 000054384 1001_ $$0P:(DE-Juel1)VDB4228$$aFrielinghaus, H.$$b0$$uFZJ 000054384 245__ $$aSANS studies of confined diblock copolymers in microemulsions 000054384 260__ $$aAmsterdam$$bNorth-Holland Physics Publ.$$c2006 000054384 300__ $$a738 - 741 000054384 3367_ $$0PUB:(DE-HGF)16$$2PUB:(DE-HGF)$$aJournal Article 000054384 3367_ $$2DataCite$$aOutput Types/Journal article 000054384 3367_ $$00$$2EndNote$$aJournal Article 000054384 3367_ $$2BibTeX$$aARTICLE 000054384 3367_ $$2ORCID$$aJOURNAL_ARTICLE 000054384 3367_ $$2DRIVER$$aarticle 000054384 440_0 $$04907$$aPhysica B: Condensed Matter$$v385-386$$x0921-4526 000054384 500__ $$aRecord converted from VDB: 12.11.2012 000054384 520__ $$aUsing small angle neutron scattering (SANS) polymers were studied as additives in microemulsions. Usually, one assumes no or small confinement, which is expressed by the ratio of the polymer size R-g and the domain size d. For amphiphilic diblock copolymers, an increased surfactant efficiency and a more rigid surfactant membrane were observed. The sensitivity of the diblock copolymer effect on polymer concentration agreed with theoretical predictions. The current study is focused on medium and higher confinement of diblock copolymers. A computer simulation predicted elevated sensitivities for medium confinement and a reversed behaviour for high confinement. Experimentally, we found evidence for the reversal between medium and high confinement. The correlation length, which is proportional to the membrane rigidity, increased or decreased depending on the level of confinement. This result supports the interpretation that at high confinement the anchored diblock copolymer and the free homopolymer cannot be distinguished anymore. (c) 2006 Elsevier B.V. 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