X-ray diffraction and thermogravimetry data of cellulose, chlorodeoxycellulose and aminodeoxycellulose

• DOI: 10.1007/s10973-009-0270-6
• Publication Date: 2009-07-27T09:36:10Z
• Authors: Edson C. da Silva...; Sirlane A. A. San...; Júlio C. P. Melo; Fernando J. V. E....; Claudio Airoldi
• Keywords: 02 engineering and technology; 0210 nano-technology; 01 natural sciences; 0104 chemical sciences

Cellulose was chemically modified with SOCl2 to obtain chlorodeoxycellulose, followed by a reaction that gave bonded ethylene-1,2-diamine (en), producing 6-(2 0 - aminoethylamino)-6-deoxycellulose. The reactions were carried out without the presence of solvent, in water or in N,N 0 -dimethylformamide, in which the highest amount of amino compound was incorporated onto the biopolymer backbone. The X-ray diffraction patterns for the chloro- deoxycellulose indicate new crystallinities that result from hydrogen bonds established through bonded chorine atoms and the remaining hydroxyl groups, while all the amino- deoxycelluloses were amorphous compounds. Thermal stabilities, for all aminated celluloses gave lower final mass losses than for the chlorinated biopolymer, whose value is lower than unmodified cellulose.