Premium
Structure of polymer solutions and gels containing fillers
Author(s) -
Geissler Erik,
Hecht AnneMarie,
Horkay Ferenc
Publication year - 2001
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/1521-3900(200106)171:1<171::aid-masy171>3.0.co;2-1
Subject(s) - polymer , materials science , neutron scattering , fumed silica , ternary operation , chemical engineering , deuterium , small angle neutron scattering , polymer chemistry , siloxane , polymer architecture , ternary numeral system , scattering , polymer science , composite material , optics , physics , quantum mechanics , computer science , programming language , engineering
Small angle neutron scattering (SANS) gives information on the structure of binary systems such as polymer solutions or swollen networks. By using mixtures of protonated and deuterated solvent the neutron scattering contrast can be varied, thus allowing ternary systems to be investigated. Here we describe SANS measurements in poly(dimethyl siloxane) (PDMS) solutions and gels containing fumed silica fillers with different surface treatments. Three different partial structure factors of the filled polymer samples can be distinguished, S pp ( q ), S pf ( q ) and S ff ( q ), where the subscripts p and f refer to polymer and filler. The structure factor of the polymer S pp ( q ) resembles that of star polymers. The distribution of the polymer in the network depends on the surface treatment.