Hostname: page-component-6766d58669-vgfm9 Total loading time: 0 Render date: 2026-05-23T01:23:05.802Z Has data issue: false hasContentIssue false

Electrical and mechanical properties of free-standing PMMA–MMT clay composites

Published online by Cambridge University Press:  12 November 2014

Syed Abusale Mhamad Nabirqudri
Affiliation:
Department of Materials Science, Gulbarga University, Gulbarga 585106, India Department of Mechanical, KBN College of Engineering, Gulbarga 585104, Karnataka, India
Aashis S. Roy
Affiliation:
Department of Materials Science, Gulbarga University, Gulbarga 585106, India
M.V.N. Ambika Prasad*
Affiliation:
Department of Materials Science, Gulbarga University, Gulbarga 585106, India
*
a)Address all correspondence to this author. e-mail: prasad1_amb@rediffmail.com
Get access

Abstract

Modified MMT clay-doped PMMA composites have been prepared by solvent casting method for different weight percentages. The prepared composite films were characterized by FTIR and SEM. Also, the DC conductivity was carried out for PMMA and PMMA composite films. Among all composites, it was found that 30 wt% shows highest conductivity of 1.59 × 10−3 S/cm. The negative thermal coefficient behavior of these polymer composite films confirms that the increase in conductivity is due to the elongation of polymer chain which helps in charge transport mechanism. Dielectric study also shows that 30 wt% has the lowest dielectric constant and dielectric loss of 2.5 and 3.3, respectively, resulting in an increase in conductivity of 5 × 10−3 S/cm. The isotropic nature of 30 wt% composite film shows a high quality factor of 0.005 because of overdamping of electron at 104 Hz. Cole–cole plots show that the semi arc originated from a single point and its area decreases with filler concentration up to 30 wt% due to drop in the electrical resistance. Tensile modulus increases because of high MMT aspect ratio and distribution ratio. The 30 wt% of the composite shows high tensile strength at 55 MPa which induces 8% of strain in the PMMA–MMT clay composite films. Therefore, these composite films can be used in many sensor and solar technologies as encapsulation materials.

Information

Type
Articles
Copyright
Copyright © Materials Research Society 2014 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

Article purchase

Temporarily unavailable