Block copolymers, having the configuration ethylene sulphide-isoprene-styrene or ethylene sulphide-isoprene ethylene sulphide, have been characterized to define the structure of the ethylene sulphide moiety. It is concluded that ethylene sulphide-isoprene-styrene block copolymers exist in solution a
The rs-structure of ethylene sulphide
โ Scribed by Kasuhiro Okiye; Chiaki Hirose; David G. Lister; John Sheridan
- Publisher
- Elsevier Science
- Year
- 1974
- Tongue
- English
- Weight
- 202 KB
- Volume
- 24
- Category
- Article
- ISSN
- 0009-2614
No coin nor oath required. For personal study only.
๐ SIMILAR VOLUMES
Prominent fcaturcs of the vxuum ultraviolet spectrum of ethylene sulphide have been assigned to three Rydbcrg scrics. All rhrce convege to an ionization limit of 9.051 eV (73 000 cm-' ). The Rydberg orbitals of each series are classified xcordins to the magnitude of the qwntum defect (6).
Based on ab initio configuration interaction calculations and the previously measured vacuum-ultraviolet spectrum of ethylene sulphide, we have been able to assign essentially all absorption peaks, including the s, p and d Rydberg series up to n=9.
The synthesis with anionic catalysts and the characterization of ES-IBS copolymer and ES-IBS-ATE terpolymer are reported (ES, IBS, ATE and PS = ethylene sulphide, isobutylene sulphide, 3-allyloxy-l,2-epithiopropane and propylene sulphide respectively). For ES-IBS copolymer with 35-55% ES, nearly amo