Matrix chain deformation in reinforced networks: a SANS approach

被引:67
作者
Westermann, S
Kreitschmann, M
Pyckhout-Hintzen, W
Richter, D
Straube, E
Farago, B
Goerigk, G
机构
[1] Forschungszentrum Julich, Inst Festkorperforsch, D-52425 Julich, Germany
[2] Univ Halle Wittenberg, Fachbereich Phys, D-06099 Halle, Germany
[3] Inst Max Von Laue Paul Langevin, F-38042 Grenoble, France
[4] DESY, D-22603 Hamburg, Germany
关键词
D O I
10.1021/ma990112e
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
A small-angle neutron scattering (SANS) investigation of matrix chain deformation in an especially designed composite model system fora filled rubber-elastic network is presented. SANS experiments on the structure of polyisoprene homopolymer chains introduced into a well-microphase-separated triblock polyisoprene-polystyrene-polyisoprene (PI-PS-PI) system of the ABA type are reported. Use is made of the phase- and composition-matching techniques. The data are described in terms of the scattering behavior of the corresponding pure polyisoprene network at larger microscopic than macroscopic strains. The results confirm the model for the strain enhancement in reinforced networks and give the first direct microscopic insights into the mechanisms of reinforcement. A complementary small-angle X-ray scattering (SAXS) study yields all relevant geometrical parameters of the model filler and its detailed behavior under strain.
引用
收藏
页码:5793 / 5802
页数:10
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