| Tartalom: |
http://real.mtak.hu/5798/ |
| Archívum: |
MTA Könyvtár |
| Gyűjtemény: |
Status = Published
Type = Article
|
| Cím: |
Thermal Degradation of Starch in Production of Environmentally Benign Flocculants, 1. Stochastic Modeling of Degradation Process
|
| Létrehozó: |
Gyenis, János
Dencs, J.
Nős, G.
Marton, Gy.
|
| Kiadó: |
American Chemical Society
|
| Dátum: |
2007
|
| Téma: |
QD Chemistry / kémia
TP Chemical technology / vegyipar, vegyészeti technológia
|
| Tartalmi leírás: |
The paper deals with the thermal degradation of starch during phosphorylation carried out at elevated
temperatures in the solid phase to produce biodegradable flocculants. The aim of the work reported here was
to elucidate the mechanism and kinetics of the degradation process. In the first part of this study, a discrete
Markov-chain model was proposed and discussed. The whole molecular weight range of the raw material
and degradation products was divided into 10 discrete intervals. Mass transitions between them were considered
as the consequence of splits of molecules to fragments, occurring with given probabilities at different positions
within the molecules during a time step. Supposing various distributions of split probabilities along the length
of starch molecules, and considering different influences of molecular weights on these probabilities, simulations
were carried out resulting in characteristic patterns in the evolution of molecular weigh distributions during
the process. These characteristics made it possible to identify the mechanism of degradation.
|
| Típus: |
Article
PeerReviewed
|
| Formátum: |
text
|
| Azonosító: |
Gyenis, János and Dencs, J. and Nős, G. and Marton, Gy. (2007) Thermal Degradation of Starch in Production of Environmentally Benign Flocculants, 1. Stochastic Modeling of Degradation Process. INDUSTRIAL and ENGINEERING CHEMISTRY RESEARCH, 46 (24). pp. 7900-7907. ISSN 0888-5885
|
| Kapcsolat: |
|
