The Effects of Temperature of Condensation on the Thermal Stability and Morphology of 1,4-Phenylenediamine-1-Propylsilica Xerogels
β Scribed by Debora S. F. Gay; Yoshitaka Gushikem; Celso C. Moro; Tania M. H. Costa; Edilson V. Benvenutti
- Book ID
- 106442544
- Publisher
- Springer
- Year
- 2005
- Tongue
- English
- Weight
- 658 KB
- Volume
- 34
- Category
- Article
- ISSN
- 0928-0707
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## Abstract A vibrational study of two crystalline forms of the __N__,__N__β²βdiphenylβ1,4βphenylenediamine molecule is reported. This compound shows polymorphism in its solid state, i.e. either an orthorhombic or a triclinic structure is obtained depending on the conditions of crystallization. Thre
Effects of thermal annealing on the morphology of the Al x Ga (1 Γ x) N films with two different high Al-contents (x =0.43 and 0.52) have been investigated by atomic force microscopy (AFM). The annealing treatments were performed in a nitrogen (N 2 ) gas ambient as short-time (4 min) and long-time (