The cross-linking influence of electromagnetic radiation on water-soluble polyacrylan compositions with biopolymers

• Autorzy: Grabowska B.
• Języki publikacji: EN

Abstrakty

EN

The results of examinations of the cross-linking influence of electromagnetic radiation - in a microwave range - on polyacrylan compositions with biopolymers, are presented in the hereby paper. The cross-linking process of the tested compositions was determined on the basis of the FT-IR spectroscopic methods. It was shown that microwave operations can lead to the formation of new cross-linked structures with strong covalent bonds. The adsorption process and formation of active centres in polymer molecules as well as in highsilica sand were found due to microwave radiations. In this process hydroxyl groups (-OH) - present in a polymer - and silane groups (Si-O-H) - present in a matrix - are mainly taking part. Spectroscopic and strength tests performed for the system: biopolymer binding agent - matrix indicate that the microwave radiation can be applied for hardening moulding sands with biopolymer binders.

Słowa kluczowe

EN

biopolymer binders; cross-linking; microwaves; moulding sands

PL

biopolimer; spoiwo; sieciowanie; mikrofale; piasek odlewniczy

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2009
• Tom: Vol. 9, iss. 1
• Strony: 41--44
• Opis fizyczny: Bibliogr. 13 poz., rys., wykr.

Twórcy

autor

Grabowska B.

• Department of Engineering of Foundry Processes, Faculty of Foundry Engineering, AGH-University of Science and Technology, 23 Reymonta, 30-059 Cracow, Poland,

Bibliografia

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• [3] Zhou X., Yang J., Qu G.: Study on synthesis and properties of modified starch binder for foundry, Journal of Materials Processing Technology, 183, Issues 2-3 (2007) p. 407.
• [4] Grabowska B., Holtzer M.: Networking and useing polyacrylate as binders of mould sands Acta Metallurgica Slovaca, No. 3 (2001), (1/2), Year-book 7, p. 56.
• [5] Grabowska B., Holtzer M.: Application of a Microwave Radiation as a Cross-linking Factor in the System: Sodium Polyacrylate - Silica Gel, Polimery (2007), 52, No. 11/12, p. 841-847.
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• [7] Grabowska B., Holtzer M.: Possibilities of using the biopolymers as binders for the moulding and core sands, Przegląd Odlewnictwa, (2008) vol. 58, No. 4, p. 212-215 (in Polish).
• [8] Grabowska B., Holtzer M.: Application of Spectroscopic Methods for Investigation of Cross-Linking Process of Sodium Polyacrylate by Various Methods, Polimery, (2008) vol. 53, No. 7/8, p. 531-537.
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• [13] Grabowska B.: Polimery, Cross-Linking and Application of Polyacrylan Compositions with Biopolymers Used as Moulding Sands Binding Agents Part 1. Polyacrylan Compositions - Containing Dextrin - Cross-Linked by Means of Microwaves (2009) - in print.