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|Type:||Artigo de periódico|
|Title:||X-ray diffraction and thermogravimetry data of cellulose, chlorodeoxycellulose and aminodeoxycellulose|
|Author:||da Silva, EC|
|Abstract:||Cellulose was chemically modified with SOCl(2) to obtain chlorodeoxycellulose, followed by a reaction that gave bonded ethylene-1,2-diamine (en), producing 6-(2'-aminoethylamino)-6-deoxycellulose. The reactions were carried out without the presence of solvent, in water or in N,N'-dimethylformamide, in which the highest amount of amino compound was incorporated onto the biopolymer backbone. The X-ray diffraction patterns for the chlorodeoxycellulose indicate new crystallinities that result from hydrogen bonds established through bonded chorine atoms and the remaining hydroxyl groups, while all the aminodeoxycelluloses 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.|
|Citation:||Journal Of Thermal Analysis And Calorimetry. Springer, v. 100, n. 1, n. 315, n. 321, 2010.|
|Appears in Collections:||Unicamp - Artigos e Outros Documentos|
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