## Abstract A novel mathematical model is presented for the reaction between melamine (M) and formaldehyde (F) at pH = 9.0 and at temperatures between 38 and 90Β°C. It is based on a kinetic scheme that includes reversible methylolations, irreversible formation of (unsubstituted) methylene bridges, r
Homogeneous methylolation of melamine: Mathematical modeling
β Scribed by V. V. Nicolau; D. A. Estenoz; G. R. Meira
- Publisher
- John Wiley and Sons
- Year
- 2007
- Tongue
- English
- Weight
- 370 KB
- Volume
- 106
- Category
- Article
- ISSN
- 0021-8995
No coin nor oath required. For personal study only.
π SIMILAR VOLUMES
## Abstract This work investigates five reactions between melamine (M) and formaldehyde (F) at pH = 9.0, and with initial F : M ratios of 2. The samples were analyzed by size exclusion chromatography (SEC), volumetric techniques, and (^1^H and ^13^C) NMR. Condensation was quantified by the SEC meas
Using ultrasound measurements of the femur, tibia, humerus, radius (N = 515), and fibula and ulna (N = 385) from normal fetuses between 12 and 40 completed weeks of gestation, growth models were determined for each bone by computer analysis. On the basis of residual analysis, growth of fetal limb bo