Research output: Contribution to journal › Article › peer-review
Interplay of polymer matrix and nanosized redox dopant with regard to thermo-oxidative and pyrolytic stability : CeO2 nanoparticles in a milieu of aromatic polyimides. / Nikolaeva, Alexandra L.; Gofman, Iosif V.; Yakimansky, Alexander V.; Ivan'kova, Elena M.; Gulii, Natalia S.; Teplonogova, Maria A.; Ivanova, Olga S.; Baranchikov, Alexander E.; Ivanov, Vladimir K.
In: Materials Today Communications, Vol. 22, 100803, 03.2020.Research output: Contribution to journal › Article › peer-review
}
TY - JOUR
T1 - Interplay of polymer matrix and nanosized redox dopant with regard to thermo-oxidative and pyrolytic stability
T2 - CeO2 nanoparticles in a milieu of aromatic polyimides
AU - Nikolaeva, Alexandra L.
AU - Gofman, Iosif V.
AU - Yakimansky, Alexander V.
AU - Ivan'kova, Elena M.
AU - Gulii, Natalia S.
AU - Teplonogova, Maria A.
AU - Ivanova, Olga S.
AU - Baranchikov, Alexander E.
AU - Ivanov, Vladimir K.
PY - 2020/3
Y1 - 2020/3
N2 - A series of polyimide/CeO2 nanocomposite films were fabricated based on three polymer matrices. The prepared films were characterized by scanning electron microscopy (SEM), thermomechanical analysis (TMA), and also simultaneous thermogravimetric (TGA) and differential thermal analysis (DTA), the latter two having been performed both in air and in inert (argon) atmosphere. Ceria nanoparticles were shown to be well dispersed in the PI matrix. TGA analysis revealed that the effect of ceria nanoparticles on thermal and thermo-oxidative stability of the nanocomposites depends strongly on the chemical nature of the polyimide. Thus, thermal properties of a nanocomposite based on the polyimide containing SO2-groups in the elementary unit of the polymer chain were found to be substantially enhanced upon incorporation of the nanoparticles in the matrix. In contrast, the polyimide with no sulfonic groups had a decreased thermo-oxidative stability being doped with CeO2 nanoparticles. The possible mechanism of polymer matrix – ceria nanoparticles interactions determining the nanocomposite thermal stability change is discussed.
AB - A series of polyimide/CeO2 nanocomposite films were fabricated based on three polymer matrices. The prepared films were characterized by scanning electron microscopy (SEM), thermomechanical analysis (TMA), and also simultaneous thermogravimetric (TGA) and differential thermal analysis (DTA), the latter two having been performed both in air and in inert (argon) atmosphere. Ceria nanoparticles were shown to be well dispersed in the PI matrix. TGA analysis revealed that the effect of ceria nanoparticles on thermal and thermo-oxidative stability of the nanocomposites depends strongly on the chemical nature of the polyimide. Thus, thermal properties of a nanocomposite based on the polyimide containing SO2-groups in the elementary unit of the polymer chain were found to be substantially enhanced upon incorporation of the nanoparticles in the matrix. In contrast, the polyimide with no sulfonic groups had a decreased thermo-oxidative stability being doped with CeO2 nanoparticles. The possible mechanism of polymer matrix – ceria nanoparticles interactions determining the nanocomposite thermal stability change is discussed.
KW - Cerium dioxide nanoparticles
KW - Nanocomposites
KW - Polyimides
KW - Thermal properties
KW - CERIA
KW - DEGRADATION
KW - THERMAL-DECOMPOSITION
UR - http://www.scopus.com/inward/record.url?scp=85076151218&partnerID=8YFLogxK
UR - https://www.mendeley.com/catalogue/67dae8fa-eba0-366c-9c2a-abf4aca18bea/
U2 - 10.1016/j.mtcomm.2019.100803
DO - 10.1016/j.mtcomm.2019.100803
M3 - Article
AN - SCOPUS:85076151218
VL - 22
JO - Materials Today Communications
JF - Materials Today Communications
SN - 2352-4928
M1 - 100803
ER -
ID: 50555278