A STUDY OF THE SUPRAMOLECULAR STRUCTURE AND MOLECULAR-DYNAMICS OF SEMICRYSTALLINE POLYMERS BY SCATTERING OF ULTRA-COLD NEUTRONS

Authors
GRINEV VG KUZNETSOV SP MESHKOV IV PEREKRESTENKO AD RASPOPOV LN SHELAGIN AV
Citation
Vg. Grinev et al., A STUDY OF THE SUPRAMOLECULAR STRUCTURE AND MOLECULAR-DYNAMICS OF SEMICRYSTALLINE POLYMERS BY SCATTERING OF ULTRA-COLD NEUTRONS, Vysokomolekularnye soedinenia. Seria A, 35(2), 1993, pp. 179-185
Citations number
9
Categorie Soggetti
Polymer Sciences
Journal title
Vysokomolekularnye soedinenia. Seria A → ACNP
ISSN journal
05075475
Volume
35
Issue
2
Year of publication
1993
Pages
179 - 185
Database
ISI
SICI code
0507-5475(1993)35:2<179:ASOTSS>2.0.ZU;2-I
Abstract
Interaction of ultra-cold neutrons with the semicrystalline polymers i s studied theoretically. Analytic expressions are obtained for the cro ss-sections of elastic scattering of neutrons on two-phase ideal and n on-ideal systems. Using a time-of-flight spectrometer for the ultra-co ld neutrons with the range of wavelengths lambda > 2 nm, the total cro ss-sections of interaction of neutrons with films of different sorts o f polyethylene and deuterated polyethylene, polytetrafluoroethylene an d ethylene-allene copolymer are measured. Parameters of supramolecular structure of these polymers are determined. The peculiarities of inel astic scattering of neutrons close to the relaxational transitions are studied.