Zobrazeno 1 - 3
of 3
pro vyhledávání: '"Xiaoshen Guo"'
Publikováno v:
Wood Science and Technology. 49:475-493
The competitive formation of the methylene and methylene ether bridges in the urea–formaldehyde reaction in alkaline solution was investigated by using 13C NMR and quantum chemistry calculations. Despite that the classical theory states that the co
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::21849c8afce8546210ed532a9ba12b98
https://doi.org/10.1007/s00226-015-0711-2
https://doi.org/10.1007/s00226-015-0711-2
Publikováno v:
Progress in Reaction Kinetics and Mechanism. 39:115-121
The reaction between urea and HO– in alkaline solution was investigated at B3LYP and MP2 levels. The PCM solvent model was used to include the implicit solvent effects. To estimate the specific solvation effects, explicit water molecules were added
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::05cfa2d4eefbf4357e4c7193d9d6f989
https://doi.org/10.3184/97809059274714x13874723178449
https://doi.org/10.3184/97809059274714x13874723178449
Publikováno v:
Journal of Applied Polymer Science. 133
The acid-catalyzed urea–formaldehyde reactions were reexamined in detail by using quantum chemistry method and 13C-NMR determinations. Some issues in the synthesis theory that were not well understood previously have been addressed and clarified. T
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c0bab528e2ae17fe152b855c9e094712
https://doi.org/10.1002/app.44339
https://doi.org/10.1002/app.44339