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Effect of phosphoric acid molarity on the structural, thermal, mechanical, and electrical properties of polyimide/polyaniline nanocomposites.
- Source :
- Journal of Reinforced Plastics & Composites; Jul2023, Vol. 42 Issue 13/14, p700-706, 7p
- Publication Year :
- 2023
-
Abstract
- In this paper, we used two monomers, 3,3',4,4'-benzophenone tetracarboxylic dianhydride (BTDA) and m,m'-diaminobenzophenone (m, m'-DABP), to produce polyamide acid and then converted it to polyimide (PI). The effects of phosphoric acid (H<subscript>3</subscript>PO<subscript>4</subscript>) molarity (1, 2, and 3 M) on the structural, thermal, mechanical, and electrical characteristics of the polyimides/polyaniline (PI/PANI) nanocomposites were studied. Two sharp reflection peaks were developed by the addition of PANI to PI. When 3 M H<subscript>3</subscript>PO<subscript>4</subscript> is added, the crystalline sharp peak loses some of its intensity. The complex formation of PI/PANI-H<subscript>3</subscript>PO<subscript>4</subscript> was confirmed by Fourier transform infrared spectroscopy studies. The surface morphologies of the H<subscript>3</subscript>PO<subscript>4</subscript> complex with nanocomposites were investigated by using a scanning electron microscope. From differential scanning calorimetry studies, the glass transition temperatures of nanocomposites decrease dramatically with an increase in H<subscript>3</subscript>PO<subscript>4</subscript>. Microhardness, flexural strength, and young modulus all dropped as acid molarity increased, although elongation at break increased as H<subscript>3</subscript>PO<subscript>4</subscript> molarity increased. After the addition of H<subscript>3</subscript>PO<subscript>4</subscript>, a drop in the dielectric constant and an increase in ionic conductivity were observed. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 07316844
- Volume :
- 42
- Issue :
- 13/14
- Database :
- Complementary Index
- Journal :
- Journal of Reinforced Plastics & Composites
- Publication Type :
- Academic Journal
- Accession number :
- 164310844
- Full Text :
- https://doi.org/10.1177/07316844221138808