nanostructured material; self-assembly in bulk; block copolymer
Abstract :
[en] The microphase structure of polyisoprene-block-poly(methyl methacrylate) diblock copolymers was studied using solid-state NMR techniques. Wideline separation spectroscopy reveals a narrow interphase between the two polymers. The domain sizes of a lamellar sample and a sample with hexagonally ordered cylinders were determined using 1H spin diffusion. The lamellar sample shows a domain size of 16 ± 2 nm for the minor polyisoprene phase and a long period of 33 ± 4 nm. The cylindrical structure has a long period of 38 ± 7 nm, the diameter of the PMMA cylinders is 21 ± 4 nm. These results are about 20% below the estimates obtained from theoretical calculations according to Helfand and Wasserman
Research Center/Unit :
Center for Education and Research on Macromolecules (CERM)
Disciplines :
Materials science & engineering Chemistry
Author, co-author :
Werkhoven, Thekla M; Leiden Institute of Chemistry, Gorlaeus Laboratories, Leiden, The Netherlands
Mulder, Fokko M; Leiden Institute of Chemistry, Gorlaeus Laboratories, Leiden, The Netherlands
Zune, Catherine; Université de Liège - ULiège > Department of Chemistry > Center for Education and Research on Macromolecules (CERM)
Jérôme, Robert ; Université de Liège - ULiège > Department of Chemistry > Center for Education and Research on Macromolecules (CERM)
de Groot, Huub JM; Leiden Institute of Chemistry, Gorlaeus Laboratories, Leiden, The Netherlands
Language :
English
Title :
Determination of polyisoprene-block-poly(methyl methacrylate) domain sizes using 1H spin diffusion
