The effect of long-term ambient aging on the mechanical properties of conducting polysiloxane-polypyrrole graft copolymers

Date

2003-05-01

Author

Biran, C
Toppare, Levent Kamil
Tincer, T
Yagci, Y
Harabagiu, V

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

15
views

0
downloads

The mechanical behavior of conducting polysiloxane-polypyrrole graft copolymers has been investigated as a function of ambient oxidative aging period. Graft copolymers of N-pyrrolyl-terminated polydimethylsiloxane (SPPy) with pyrrole were synthesized electrochemically at constant potential by using p -toluene sulfonic acid as the supporting electrolyte. Mechanical tests were performed on both unwashed and dichloromethane -washed copolymers after aging. An initial decrease followed by an increase in the tensile strength and strain values was observed with aging. The conductivities and mechanical properties of the films were determined to remain almost unchanged after 6 months of aging at about 46 S/cm.

Subject Keywords

Conducting Polymers, Conducting Polymers, Polypyrrole, Aging, Mechanical Properties

URI

https://hdl.handle.net/11511/48269

Journal

CHEMICAL ENGINEERING COMMUNICATIONS

DOI

https://doi.org/10.1080/00986440390207422

Collections

Department of Chemistry, Article

Suggestions

OpenMETU
Core

The Role of Electrostatic Interaction between Free Charge Carriers and Counterions in Thermoelectric Power Factor of Conducting Polymers: From Crystalline to Polycrystalline Domains Shi, Wen; Yıldırım, Erol; Wu, Gang; Wong, Zicong Marvin; Deng, Tianqi; Wang, Jian-Sheng; Xu, Jianwei; Yang, Shuo-Wang (2020-06-01) One of the most burning problems in organic thermoelectrics is the lack of deep understanding on the key limiting factors of thermoelectric efficiency at different length scales for conducting polymers. Here, by examining a prototypical pi-conjugated polymer, poly(3-hexylthiophene) from molecular level to crystalline and polycrystalline domains, and on the basis of first-principles calculations, new insights are presented into the thermoelectric transport in conducting polymers, and new material design guid...
Nanocomposites based on blends of polyethylene Işık, Fatma; Yılmazer, Ülkü; Department of Chemical Engineering (2005) In this study the effects of compatibilizer type, organoclay type, and the addition order of components on the morphological, thermal, mechanical and flow properties of ternary nanocomposites based on low density polyethylene, LDPE were investigated. As compatibilizer, ethylene/methyl acrylate/glycidyl methacrylate, ethylene/glycidyl methacrylate, and ethylene/butyl acrylate/maleic anhydride; as organoclay Cloisite? 15A, Cloisite? 25A and Cloisite? 30B were used. All samples were prepared by a co-rotating t...
Nanocomposites based on recycled poly(ethylene terepthalate) Tolga, Aslı; Yılmazer, Ülkü; Department of Chemical Engineering (2005) In this study, the effects of glycol type, organoclay type and concentration on the final properties of nanocomposites based on recycled poly(ethylene terephthalate) was investigated. For this purpose, first recycled PET was glycolysed and after that unsaturated polyester-montmorillonite nanocomposites were synthesized by using three different types of glycols (i.e. ethylene glycol (EG), propylene glycol (PG) and diethylene glycol (DEG)). As the first step, all the compositions were prepared by Cloisite 30B...
Thermal and structural characterization of polypyrrole by direct-insertion probe pyrolysis mass spectrometry Uyar, T.; Toppare, Levent Kamil; Hacaloğlu, Jale (2001-03-15) There have been extensive studies on structural characterization of conducting polypyrrole, PPY using various techniques. The two proposed structures are the aromatic form corresponding to the undoped state and the quinoid form corresponding to the doped state. However, actual structure appears to be more complicated and the relationship between the dopant used and the structure was not totally clarified. In this study direct insertion probe pyrolysis mass spectrometry technique was applied to monitor therm...
Effects of injection molding conditions on the mechanical properties of polyamide/glass fiber composites Cansever, Cahit Can; Yılmazer, Ülkü; Department of Polymer Science and Technology (2007) In this study, effect of injection molding process parameters on fiber length and on mechanical properties of Polyamide-6 / glass fiber composite were investigated to produce higher performance composites. Polyamide-6 was first compounded with an E-grade glass fiber in a co-rotating intermeshing twin screw extruder. Then, by using this composite, twenty-five types of experiments were performed by injection molding by changing the barrel temperature, injection pressure, hold pressure, mold temperature, cooli...

Citation Formats

C. Biran, L. K. Toppare, T. Tincer, Y. Yagci, and V. Harabagiu, “The effect of long-term ambient aging on the mechanical properties of conducting polysiloxane-polypyrrole graft copolymers,” CHEMICAL ENGINEERING COMMUNICATIONS, pp. 823–830, 2003, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/48269.