Kaur, Amarjeet and Saharan, Ritu and Dhawan, Sundeep K. (2014) Investigation of charge transport properties in conducting copolymers of aniline with 3-aminobenzenesulfonic acid for their applications as antistatic encapsulation materials blended with low-density polyethylene. Polymer International, 63 (2). 252-257. ISSN 0959-8103

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The electrostatic charge dissipative (ESD) properties of conducting self-doped and PTSA-doped copolymers of aniline (AA), o-methoxyaniline (methoxy AA) and o-ethoxyaniline (ethoxy AA) with 3-aminobenzenesulfonic acid (3-ABSA) blended with low-density polyethylene (LDPE) were investigated in the presence of external dopant p-toluenesulfonic acid (PTSA). Blending of copolymers with LDPE was carried out in a twin-screw extruder by melt blending by loading 1.0 and 2.0 wt% of conducting copolymer in the LDPE matrix. The conductivity of the blown polymers blended with LDPE was in the range 10(-12)-10(-6) Scm(-1), showing their potential use as antistatic materials for the encapsulation of electronic equipment. The DC conductivity of all self-doped homopolymers and PTSA-doped copolymers was measured in the range 100-373 K. The room temperature conductivity (Scm(-1)) of self-doped copolymers was: poly(3-ABSA-co-AA), 7.73 x 10(-4); poly(3-ABSA-co-methoxy AA), 3.06 x 10(-6); poly(3-ABSA-co-ethoxy AA), 2.99 x 10(-7); and of PTSA-doped copolymers was: poly(3-ABSA-co-AA), 4.34 x 10(-2); poly(3-ABSA-co-methoxy AA), 9.90 x 10(-5); poly(3-ABSA-co-ethoxy AA), 1.10 x 10(-5). The observed conduction mechanism for all the samples could be explained in terms of Mott's variable range hopping model; however, ESD properties are dependent upon the electrical conductivity. The antistatic decay time is least for the PTSA-doped poly(3-ABSA-co-AA), which has maximum conductivity among all the samples.

Item Type: Article
Uncontrolled Keywords: low-density polyethylene (LDPE); antistatic; conductivity; 3-aminobenzenesulfonic acid; variable range hopping
Subjects: Polymer Science
Depositing User: Dr. Rajpal Walke
Date Deposited: 16 Oct 2015 07:17
Last Modified: 16 Oct 2015 07:17
URI: http://npl.csircentral.net/id/eprint/1354

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