This title appears in the Scientific Report : 2002 

Composites reinforcement by rods : a SAS study
Urban, V.
Botti, A. / Pyckhout-Hintzen, W. / Richter, D. / Straube, E.
Neutronenstreuung; IFF-NST
Applied physics / A, 74 (2002) S. 510 - 512
Berlin Springer 2002
510 - 512
10.1007/s003390201524
Journal Article
Kondensierte Materie
Applied Physics A 74
J
Please use the identifier: http://dx.doi.org/10.1007/s003390201524 in citations.
The mechanical properties of composites are governed by size, shape and dispersion degree of so-called reinforcing particles. Polymeric fillers based on thermodynamically driven microphase separation of block copolymers offer the opportunity to study a model system of controlled rodlike filler particles. We chose a triblock copolymer (PBPSPB) and carried out SAS measurements with both X-rays and neutrons, in order to characterize separately the hard phase and the cross-linked PB matrix. The properties of the material depend strongly on the way that stress is carried and transferred between the soft matrix and the hard fibers. The failure of the strain-amplification concept and the change of topological contributions to the free energy and scattering factor have to be addressed. In this respect the composite shows a similarity to a two-network system, i.e. interpenetrating rubber and rod-like filler networks.