Szczegóły publikacji
Opis bibliograficzny
Thermal decomposition of binder based on etherified starch to use in foundry industry / Karolina KACZMARSKA, Beata GRABOWSKA, Grzegorz GRABOWSKI, Artur BOBROWSKI, Żaneta KURLETO-KOZIOŁ // Journal of Thermal Analysis and Calorimetry ; ISSN 1388-6150. — Tytuł poprz.: Journal of Thermal Analysis ; ISSN: 0368-4466. — 2017 — vol. 130 iss. 1, s. 285–290. — Bibliogr. s. 289–290, Abstr.
Autorzy (5)
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 109156 |
|---|---|
| Data dodania do BaDAP | 2017-09-30 |
| Tekst źródłowy | URL |
| DOI | 10.1007/s10973-017-6451-9 |
| Rok publikacji | 2017 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Creative Commons | |
| Czasopismo/seria | Journal of Thermal Analysis and Calorimetry |
Abstract
In this work, the main purpose was the determination of the thermal stability of the modified starch: sodium carboxymethyl starch (CMS-Na) used in foundry technology as organic binder for molding sand. The analysis of the course of decomposition of the starch material under controlled heating in the range of 20–500 °C was based on the results of thermal analysis methods (TG, DTG, DSC) in combination with the results of spectroscopic technology (DRIFT). The use of various methods of thermal analysis and spectroscopic methods was possible to determine more entirely the mechanism of the binder decomposition process comprising reactions at the molecular level with regard to the conditions prevailing in the mold. The onset temperature of degradation of the binder and at the same time the temperature at which it begins to lose binding properties were determined. It was found that the mechanism of the binder is multistage process. The decomposition of the starch binder CMS-Na involves the gradual evaporation of the water bound at a temperature of 20–120 °C and water constitutional starch in the range of 120–200 °C, degradation of the binder in the temperature range 200–342 °C by breaking the glycosidic bonds in the polymer chains with the formation of volatile compounds and finally detaching the side groups and partial combustion of the starch material within a temperature range 342–500 °C.