Szczegóły publikacji
Opis bibliograficzny
Effect of microwave treatment on structure of binders based on sodium carboxymethyl starch: FT-IR, FT-Raman and XRD investigations / Karolina KACZMARSKA, Beata GRABOWSKA, Tadeusz Spychaj, Magdalena Zdanowicz, Maciej SITARZ, Artur BOBROWSKI, Sylwia CUKROWICZ // Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy ; ISSN 1386-1425. — 2018 — vol. 199, s. 387–393. — Bibliogr. s. 392–393, Abstr. — Publikacja dostępna online od: 2018-03-15. — VSI:ICMS2017
Autorzy (7)
- AGHKaczmarska Karolina
- AGHGrabowska Beata
- Spychaj Tadeusz
- Zdanowicz Magdalena
- AGHSitarz Maciej
- AGHBobrowski Artur
- AGHCukrowicz Sylwia
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 113488 |
|---|---|
| Data dodania do BaDAP | 2018-05-14 |
| Tekst źródłowy | URL |
| DOI | 10.1016/j.saa.2018.03.047 |
| Rok publikacji | 2018 |
| Typ publikacji | referat w czasopiśmie |
| Otwarty dostęp |  |
| Czasopismo/seria | Spectrochimica Acta, Part A, Molecular and Biomolecular Spectroscopy |
Abstract
The paper deals with the influence of the microwave treatment on sodium carboxymethyl starch (CMS-Na) applied as a binder for moulding sands. The Fourier transformation infrared spectrometry (FT-IR), Raman spectroscopy (FT-Raman) and XRD analysis data of native potato starch and three different carboxymethyl starches (CMS-Na) with various degree of substitution (DS) before and after exposition to microwave radiation have been compared. FT-IR studies showed that polar groups present in CMS-Na structure take part in the formation of new hydrogen bonds network after water evaporation. However, these changes depend on DS value of the modified starch. The FT-Raman study confirmed that due to the impact on the samples by microwave, the changes of intensity in the characteristic bands associated with the crystalline regions in the sample were noticed. The X-ray diffraction data for microwave treated CMS-Na samples have been compared with the diffractograms of initial materials and analysis of XRD patterns confirmed that microwave-treated samples exhibit completely amorphous structure. Analysis of structural changes allows to state that the binding of sand grains in moulding sand with CMS-Na polymeric binder consists in the formation of hydrogen bonds networks (physical cross-linking).
