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COMPORTEMENT THERMIQUE DE QUELQUES SYSTEMES POLYMERE-PRINCIPES BIOACTIFS


LISA GABRIELA, HURDUC NATALIA 1, IRIMIA MARINELA, ROŞCA C., BĂLĂU LUMINIŢA, POPA MARCEL
UNIVERSITATEA TEHNICA “GH. ASACHI” IAŞI, FACULTATEA DE CHIMIE INDUSTRIALA, CATEDRA DE CHIMIE FIZICA, B-DUL. D. MANGERON, NR. 71A, 6600-IAŞI, E-MAIL: GAPREOT@CH.TUIAŞI.RO (1)UNIVERSITATEA “AL.I. CUZA” IAŞI, FACULTATEA DE CHIMIE, CATEDRA DE CHIMIE FIZICA SI

Issue:

SCSCC6, Volume III

Section:

Volume III (2002)

Abstract:

A derivatographic investigation was performed on the thermal behavior of some polymers: chitosane, carboxymethylcellulose and systems type polymer-active principle: cloramphenicol-chitosanecarboxymethyl-cellulose. It was investigated systems in which there are covalent or ionic bold between active principle and cellulose derivates or biosyntheses polymers. The heating curves were recorded with a Paulik-Paulik-Erdei derivatograph (MOM Budapest) in static air atmospheres at heating reates 10 deg/min. Nonisothermal kinetic and thermodynamic parameters for decomposition of these systems were determined. The obtaining results revealed a multi-step degradation developing according to a complex mechanism.

Keywords:

chitosan, carboxymethylcellulose, TG, DTG, DTA, degradation mechanism.

Code [ID]:

CSCC6200203V00S01A0003 [0001362]

Full paper:

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