Structural, AC and DC electrical transport properties of nano titania - Polyacrylamide composite films
By: Veena G
.
Contributor(s): Lobo, Blaise.
Publisher: New Delhi CSIR 2022Edition: Vol.60(3), Mar.Description: 227-237p.Subject(s): Humanities and Applied SciencesOnline resources: Click here
In:
Indian journal of pure & applied physics (IJPAP)Summary: The microstructural features as well as the AC and DC electrical properties of titanium dioxide (titania or TiO2)
nanoparticle (NP) filled polyacrylamide (PAM) composite films with filler level (FLs) Varied from 0.02 up to 19.5 Wt %
were experimentally studied . SEM images revealed that the composite films with FLs equal to 0.02 and 0.40 Wt %
(low FLs) showed homogeneous dispersion of spherical TiO2 NPs, whereas aggregation of the filler was observed at higher
FLs. The XRD patterns of these composite films revealed an increase in their amorphousness at low FLs. The activation
energy (E a) determined from Arrhenius equation showed that the composite with FL equal to 0.40 Wt % exhibited the
lowest value of E a (equal to 0.84 eV). Dielectric study revealed that the composite film with FL equal to 0.40 Wt %
exhibited the highest value bulk conductivity at room temperature (4.39×10-6
S m-1 at 303 K). Hence, the composite sample
with FL 0.40Wt %, along with pure PAM, were subjected to a detailed dielectric study at various fixed temperatures ranging
from 303K up to 353K. The composite sample with FL 0.40 Wt % showed a maximum bulk conductivity of 1.12×10 -4 S m-
1 at temperature 353K, while it was 3.45×10-8 S m-1 for pure PAM at 303 K.
| Item type | Current location | Call number | Status | Date due | Barcode | Item holds |
|---|---|---|---|---|---|---|
Articles Abstract Database
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School of Engineering & Technology Archieval Section | Not for loan | 2022-1893 |
The microstructural features as well as the AC and DC electrical properties of titanium dioxide (titania or TiO2)
nanoparticle (NP) filled polyacrylamide (PAM) composite films with filler level (FLs) Varied from 0.02 up to 19.5 Wt %
were experimentally studied . SEM images revealed that the composite films with FLs equal to 0.02 and 0.40 Wt %
(low FLs) showed homogeneous dispersion of spherical TiO2 NPs, whereas aggregation of the filler was observed at higher
FLs. The XRD patterns of these composite films revealed an increase in their amorphousness at low FLs. The activation
energy (E a) determined from Arrhenius equation showed that the composite with FL equal to 0.40 Wt % exhibited the
lowest value of E a (equal to 0.84 eV). Dielectric study revealed that the composite film with FL equal to 0.40 Wt %
exhibited the highest value bulk conductivity at room temperature (4.39×10-6
S m-1 at 303 K). Hence, the composite sample
with FL 0.40Wt %, along with pure PAM, were subjected to a detailed dielectric study at various fixed temperatures ranging
from 303K up to 353K. The composite sample with FL 0.40 Wt % showed a maximum bulk conductivity of 1.12×10 -4 S m-
1 at temperature 353K, while it was 3.45×10-8 S m-1 for pure PAM at 303 K.
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