Szczegóły publikacji
Opis bibliograficzny
Effects of curing conditions on the structure of sodium carboxymethyl starch/mineral matrix system: FT-IR investigation / Karolina KACZMARSKA, Beata GRABOWSKA, Artur BOBROWSKI, Sylwia CUKROWICZ // Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy ; ISSN 1386-1425. — 2018 — vol. 201, s. 236–241. — Bibliogr. s. 240–241, Abstr. — Publikacja dostępna online od: 2018-04-24
Autorzy (4)
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 114050 |
|---|---|
| Data dodania do BaDAP | 2018-06-05 |
| Tekst źródłowy | URL |
| DOI | 10.1016/j.saa.2018.04.049 |
| Rok publikacji | 2018 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Czasopismo/seria | Spectrochimica Acta, Part A, Molecular and Biomolecular Spectroscopy |
Abstract
Strength properties of the microwave cured molding sands containing binders in a form of the aqueous solution of sodium carboxymethyl starch (CMS-Na) are higher than the same molding composition cured by conventional heating. Finding the reason of this effect was the main purpose in this study. Structural changes caused by both physical curing methods of molding sands systems containing mineral matrix (silica sand) and polymer water-soluble binder (CMS-Na) were compared. It was shown, by means of the FT-IR spectroscopic studies, that the activation of the polar groups in the polymer macromolecules structure as well as silanol groups on the mineral matrix surfaces was occurred in the microwave radiation. Binding process in microwave-cured samples was an effect of formation the hydrogen bonds network between hydroxyl and/or carbonyl groups present in polymer and silanol groups present in mineral matrix. FT-IR studies of structural changes in conventional and microwave cured samples confirm that participation of hydrogen bonds is greater after microwave curing than conventional heating. © 2018 Elsevier B.V.
