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Small-Angle Neutron Scattering Study of Swollen Elongated Gels: Butterfly Patterns
Polymer gels swollen in a good solvent and subjected to a uniaxial deformation have been studied by small-angle neutron scattering (SANS). In all the experiments, the solvent is deuterated; this isExpand
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The fluctuations of cross-links in a rubber — A neutron spin echo study—
Abstract We present neutron spin echo results on the dynamics of cross-links in a tetra-functional model network of polydimethyl-siloxane. The diffusion motion was found to be Rouse-like andExpand
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Aggregation of free chains within a deformed network: A SANS study
A reaction, combining labeled oligomers included in an anisotropic matrix, was monitored with small-angle neutron scattering. The initial “butterfly pattern” was strongly enhanced during theExpand
  • 1
Butterfly Patterns: an Anomaly Common to the Neutron Scattering Spectra of Elongated Rubbers, Melts and Gels:
A totally unexpected phenomenon has been observed for the first time a few years ago when studying, by small angle neutron scattering, rubbery networks containing a small proportion of uncrosslinkedExpand
  • 1
Is the distribution of entanglements homogeneous in polymer melts
Neutron-scattering experiments have been performed on elongated polystyrene melts consisting of relatively short labelled chains (M 106), which were not labelled. Important anomalies with respect toExpand
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Field-cycling NMR relation spectroscopy of molten linear and cross-linked polymers Observation of a T1 ∝ ν0.25 law for semi-global chain fluctuations
Melts of polydimethylsiloxane, polyisoprene, polyisobutylene, and polyethylene were studied by the aid of proton relaxation spectroscopy predominantly using the field-cycling technique. Spin-latticeExpand
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