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01.06.2015 | Original Paper | Ausgabe 3/2015

Cellulose 3/2015

Method of preparing stable composites of a Cu-aluminosilicate microporous compound and cellulose material and their characterisation

Zeitschrift:
Cellulose > Ausgabe 3/2015
Autoren:
Sandra Flinčec Grgac, Andrea Katović, Drago Katović

Abstract

A new aluminosilicate cellulose composite material was prepared by coating hydrogel on a cotton fabric. An aluminosilicate material zeolite Faujasite (FAU) was synthesised for a series of desired properties, observing the possibilities of the isomorphous replacement of Al or/and Si atoms, within the structure, with copper. Aluminosilicate microporous material was prepared by convection hydrothermal synthesis, applying microwave energy. The selection and modification of the zeolite deposition procedures on the cellulose material was also carried out. The stability of the obtained cellulose material to washing was determined. The crystalline structure of the aluminosilicate samples and their composites with cellulose materials were checked employing X-ray diffraction analysis. The following analysis methods were used for physicochemical characterisation: Fourier transform infrared spectroscopy and field emission scanning electron microscope with EDS. Structural properties of the newly created composite materials were investigated using the following standard methods: surface mass according to ISO 3801:1977, determination of thickness according to ISO 5084:1996, tensile strength according to DIN EN ISO 13934-1 and air permeability according to HRN EN ISO 9237:2003. Completely new constructional properties, compared to the unprocessed cellulose material, of the newly formed composite materials are mainly evident from the following experimental results: the air permeability values decrease for both samples (59.87 and 61.76 % for Cel-AlSi 1_K and Cel-AlSi 1_M, respectively), the areal density change values (1.45 % for Cel-AlSi 1_K, 4.61 % for Cel-AlSi 1_M), the sample thickness increased by 21.55 % for both composite materials while the tensile strengths decrease slightly for both samples (5.83 % for Cel- AlSi 1_K, 6.41 % for Cel-AlSi 1_M).

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