A Small-Angle X-ray Scattering Study of the Structure of Gels Formed by Poly(oxyethylene)−Poly(oxypropylene) Diblock Copolymers in Water

Autor: Ian W. Hamley, Valeria Castelletto, Johan Fundin, Colin Price, Zhuo Yang, Colin Booth
Rok vydání: 2002
Předmět:
Zdroj: Langmuir. 18:1051-1055
ISSN: 1520-5827
0743-7463
DOI: 10.1021/la011035v
Popis: The structures of gels formed by a number of poly(oxyethylene)−poly(oxypropylene) diblock copolymers in aqueous solution have been investigated using small-angle X-ray scattering. Body-centered and face-centered cubic micellar phases were identified depending on the copolymer composition. The micellar radius in the gel is compared to that in dilute solution (obtained from static light scattering) and to predictions from scaling theory. The gel structures are compared to those reported previously for poly(oxyethylene)−poly(oxybutylene) diblocks in water (Hamley et al. Langmuir 2000, 16, 2508).
Databáze: OpenAIRE