TY - JOUR
T1 - Thermal Oxidative Aging Behaviors and Degradation Kinetics of Biobased Poly(dibutyl itaconate-co-butadiene) Elastomer
AU - Hao, Fulan
AU - Yang, Hui
AU - Ma, Yaping
AU - Du, Qingzhi
AU - Han, Ju
AU - Ji, Haijun
AU - Wang, Runguo
AU - Hu, Guo Hua
AU - Zhang, Liqun
AU - Falk, Laurent
N1 - Publisher Copyright:
© 2025 The Authors. Published by American Chemical Society.
PY - 2025/4/15
Y1 - 2025/4/15
N2 - This study investigates the aging behavior of poly(dibutyl itaconate-co-butadiene) (PDBIB), a sustainable elastomer, under thermo-oxidative, thermo-shearing, and combined conditions. The well-established commercial rubbers of styrene-butadiene rubber (SBR) and cis-1,4-polybutadiene (BR) were compared. Results indicate that the sensitivity of PDBIB to thermo-oxidative aging and thermo-shearing aging is intermediate between that of SBR and BR. Both chain degradation and cross-linking were observed during aging, with chain degradation being predominant. TGA/FTIR analysis revealed initial ester bond cleavage followed by butadiene segment scission. Thermal degradation kinetics, analyzed using the Kissinger and Flynn-Wall-Ozawa methods, showed activation energies of 196.4 and 225.7 kJ/mol for itaconate and butadiene segments, respectively. The Flynn-Wall-Ozawa method indicated a multi-step degradation process, with the activation energy ranging from 160.9 to 289.9 kJ/mol. This research provides insights into PDBIB aging and performance, aiding service life prediction and supporting its commercial potential for industrial use.
AB - This study investigates the aging behavior of poly(dibutyl itaconate-co-butadiene) (PDBIB), a sustainable elastomer, under thermo-oxidative, thermo-shearing, and combined conditions. The well-established commercial rubbers of styrene-butadiene rubber (SBR) and cis-1,4-polybutadiene (BR) were compared. Results indicate that the sensitivity of PDBIB to thermo-oxidative aging and thermo-shearing aging is intermediate between that of SBR and BR. Both chain degradation and cross-linking were observed during aging, with chain degradation being predominant. TGA/FTIR analysis revealed initial ester bond cleavage followed by butadiene segment scission. Thermal degradation kinetics, analyzed using the Kissinger and Flynn-Wall-Ozawa methods, showed activation energies of 196.4 and 225.7 kJ/mol for itaconate and butadiene segments, respectively. The Flynn-Wall-Ozawa method indicated a multi-step degradation process, with the activation energy ranging from 160.9 to 289.9 kJ/mol. This research provides insights into PDBIB aging and performance, aiding service life prediction and supporting its commercial potential for industrial use.
UR - https://www.scopus.com/pages/publications/105002687238
U2 - 10.1021/acsomega.5c00457
DO - 10.1021/acsomega.5c00457
M3 - 文章
AN - SCOPUS:105002687238
SN - 2470-1343
VL - 10
SP - 14316
EP - 14326
JO - ACS Omega
JF - ACS Omega
IS - 14
ER -