Thermal degradation of biopolymer binders: the example of starch-poly(acrylic acid)

• Autorzy: Grabowska, B.
• Języki publikacji: EN

Abstrakty

EN

To characterise a polymer, it is of fundamental importance to determine its parameters, like the temperatures of destruction, vitrification, melting point, specific mass losses or polymorphic transformations, which frequently determine the quality of the product and its applications. Thermal analyses were conducted of samples of a biopolymer binder: a starch-poly(acrylic acid) composition and a moulding sand with a biopolymer binder previously hardened with microwaves. In order to determine the thermal stability of the examined samples by determining the destruction temperature and the thermal effects of transformations taking place during heating, FTIR spectroscopy and thermal analysis (DSC, DTG, TG) methods were used. In addition, volatile products of degradation were analysed using the thermogravimetry (TG) method coupled online with mass spectrometry (MS). These examinations were also aimed at identifying the changes that can take place in the moulding sand when it comes into contact with liquid metal.

Słowa kluczowe

PL

spoiwo biopolimerowe; degradacja termiczna; masa formierska

EN

biopolymer binder; thermal degradation; moulding sand

• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2010
• Tom: Vol. 10, iss. 1 spec.
• Strony: 221--224
• Opis fizyczny: Bibliogr. 10 poz., rys., tab., wykr.

Twórcy

autor

Grabowska, B.

• Chair of Casting Process Engineering, Faculty of Foundry Engineering, AGH University of Science and Technology, ul. Reymonta 23, 30-059 Kraków, Poland,

Bibliografia

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• [3] Jens Rieger: The glass transition temperature Tg of polymers – comparison of the values from differential thermal analysis (DTA, DSC) dynamic mechanical measurements (torsion) pendulum). Polymer testing 20 (2001) p. 199-204.
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• [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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• [10] Report of thermal analysis 22. October 2009, Applications Laboratory Thermal Analysis, NETZSCH-Gerätebau GmbH, Germany.