Modification of montmorillonite by cationic polyesters (CROSBI ID 146935)
Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Huskić, Miroslav ; Žagar, Ema ; Žigon, Majda ; Brnardić, Ivan ; Macan, Jelena ; Ivanković, Marica
engleski
Modification of montmorillonite by cationic polyesters
Novel type of polyester hydrochlorides and polyesters were synthesized from octyl- or methyl- diethanolamine and organic acid chlorides with varying organic chain lengths, and their structure, molar masses and glass transition temperatures were determined. Montmorillonite (MMT) was modified by the polyester hydrochlorides by cation exchange. It was found that the length of organic acid chain does not significantly influence the interlayer spacing of MMT while the increased length of alkyl group attached to nitrogen atom greatly increases the interlayer spacing. Molar ratio MMT/hydrochloride must be at least 1:3 for quantitative cation exchange, indicating that only a part of polycation chain adheres to MMT surface while the remainder dangles freely. Hydrophobicity and organic content of OMMT increased with increased exchange ratio, reaching approximately constant levels for ratios above 1:3.
montmorillonite ; polycations ; polyester hydrochlorides
Glavni autor: Miroslav Huskić
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Podaci o izdanju
43 (3-4)
2009.
420-424
objavljeno
0169-1317
1872-9053
10.1016/j.clay.2009.01.008
Povezanost rada
Kemijsko inženjerstvo, Temeljne tehničke znanosti