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INFLUENCE OF THE SIZE OF METHYLENE SPACERS ON THE THERMAL BEHAVIOR OF SEVERAL ALIPHATIC-AROMATIC POLYESTERS


NATALIA HURDUC 1, GABRIELA LISA 2*, VIOLETA TOADER 3
1. „Al. I. Cuza” University of Iasi, Faculty of Chemistry, B-dul Carol I, No. 11, 700506, Iasi, Romania
2. “Gheorghe Asachi’’ Technical University, Chemical Engineering and Environment Protection Faculty, B-dul D. Mangeron, No. 71, 700050, Iaşi, Romania
3. McGill University, Department of Chemistry, 801 Sherbrooke St. W., Montreal, Quebec H3A 2K6, Canada
*Corresponding author: gapreot@yahoo.com

Issue:

SCSCC6, Volume XIV, No. 4

Section:

Volume XIV, No. 4 (2013)

Abstract:

Polyesters have a wide range of technical applications and therefore their processing is of the utmost importance. Since polyesters are usually processed by melting, their thermal stability is an extremely important characteristic for the exact determination of the operational parameters. The thermal analysis was carried out using a MOM-Budapest derivatograph at the 10 C/min heating speed, aluminum oxide the reference material, and the air conditions were static. The study lead to conclusions on the thermal stability and degradation mechanism depending on the number of methylene groups in the spacer. Thermal stability is supported by the increase in the number of methylene groups in the spacer. The degradation mechanism is complex through successive reactions. The spacer size influences the nature of the micromolecules formed by spacer fragmenting and by the number of carbon atoms, respectively.

Keywords:

degradation mechanism, influence of the size spacer, polyesters, thermal analysis, thermal stability.

Code [ID]:

CSCC6201304V04S01A0001 [0004041]

Full paper:

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