Thermal behaviour of polyphosphazenes in relation to structure
β Scribed by D.C. Sun; J.H. Magill
- Publisher
- Elsevier Science
- Year
- 1987
- Tongue
- English
- Weight
- 866 KB
- Volume
- 28
- Category
- Article
- ISSN
- 0032-3861
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π SIMILAR VOLUMES
The maximum number ofpossible isomers of A is 36, considering the fact that the three monomers i-iii readily isomerise at 20" via 1,s-H-shifts (equilibration ratio -1:45:54 [5]), and that each monomer may undergo Diels-Alder-type self-and cross-dimerisation.
## Abstract Experimental results of an investigation of the etching behaviour of {100} faces of MgO crystals under different etching conditions in acids, alkalies and inorganic salts are presented. It is observed that etching takes place in aqueous solutions of acids and acidic salts and in the mel