Exploring Diethylaminoethyl Cellulose: Synthesis, Stability, and Degradation Dynamics DOI Open Access
Lahcen El Hamdaoui, Asmaa M. Abdel Rahim, Nidhoim Assoumani

et al.

ChemistrySelect, Journal Year: 2025, Volume and Issue: 10(6)

Published: Feb. 1, 2025

Abstract This research explores the synthesis and characterization of diethylaminoethyl cellulose (DEAE‐cellulose), along with a comprehensive analysis its pyrolysis properties degradation kinetics. The DEAE‐cellulose was characterized by infrared spectroscopy, X‐ray diffractometry, scanning electron, EDX microscopy. thermal behavior has been investigated using TGA at four heating rates: 5, 10, 15, 20 °/min. kinetic parameters were obtained isoconversional model‐free methods proposed Kissinger, FWO, KAS, Starink. Using Kissinger technique, activation energy pre‐exponential factor determined to be 106.94 kJ/mol 2.2 × 109 min −1 , respectively. In contrast, average for free model approaches is 87.48, 82.66, 82.97 when utilizing Starink methods, Then, most probable reaction functions have also CoatsRedfern method, leading greatly improved calculation performance over entire conversion range. 1D diffusion (D1) 5 °/min could considered best‐fitted describe DEAE‐cellulose. Various types mechanism models used determine thermodynamic β = °/min, all shown positive △H except P1/4 (power law, n 1/4).

Language: Английский

Exploring Diethylaminoethyl Cellulose: Synthesis, Stability, and Degradation Dynamics DOI Open Access
Lahcen El Hamdaoui, Asmaa M. Abdel Rahim, Nidhoim Assoumani

et al.

ChemistrySelect, Journal Year: 2025, Volume and Issue: 10(6)

Published: Feb. 1, 2025

Abstract This research explores the synthesis and characterization of diethylaminoethyl cellulose (DEAE‐cellulose), along with a comprehensive analysis its pyrolysis properties degradation kinetics. The DEAE‐cellulose was characterized by infrared spectroscopy, X‐ray diffractometry, scanning electron, EDX microscopy. thermal behavior has been investigated using TGA at four heating rates: 5, 10, 15, 20 °/min. kinetic parameters were obtained isoconversional model‐free methods proposed Kissinger, FWO, KAS, Starink. Using Kissinger technique, activation energy pre‐exponential factor determined to be 106.94 kJ/mol 2.2 × 109 min −1 , respectively. In contrast, average for free model approaches is 87.48, 82.66, 82.97 when utilizing Starink methods, Then, most probable reaction functions have also CoatsRedfern method, leading greatly improved calculation performance over entire conversion range. 1D diffusion (D1) 5 °/min could considered best‐fitted describe DEAE‐cellulose. Various types mechanism models used determine thermodynamic β = °/min, all shown positive △H except P1/4 (power law, n 1/4).

Language: Английский

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