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Title: Illustration of electrical and optical properties of some conducting polymers blends
Researcher: Bhadra, Jolly
Guide(s): Sarkar, Deepali
Keywords: Blend
University: Gauhati University
Completed Date: 31/12/2009
Abstract: Conductive polymers (CP) are gaining interest day by day due to their growing fields of sophis-ticated uses. Conventional polymers are generally known to be insulators with their limited use as electrical insulators in any device making purpose. But these have high degree of mechani-cal strength and mold procesability to facilitate them constructing desirable materials. CPs on the other hand can attain near metallic electrical conductivity at their highest doped state. So they can be thought as good replacement for metals in many aspects. But the problem is not so simple, as the CPs at highest doped state are not at all processable, have very low mechanical strength and mostly not stable also. CPs have characteristic feature of tunable electrical and optical properties, which make them suitable for various device applications. In fact, retaining the electrical and optical properties, If some strength and processability property can be incorporated, CPs can play havoc. That is no wonder why CPs demand in US is rising by 5.8 percent annually. Polyaniline (PANI) and polypyrrole (PPY) are particularly attractive materials amongst CPs due to their excellent environmental stability along with other features such as, low cost, high conductivity upon doping, and ease of synthesis. In spite of all these advantages, their de-vice applications are limited due to their unprocessable nature. These can neither be solution processable (as they are not soluble in any solvent) nor melt processable (as they decompose before reaching a softening or melting temperature). There are various methods to overcome these problems, one of them, which has been adopted by us is to blend the CPs with some conventional polymers, like polyvinyl alcohol (PVA), polyvinyl Chloride (PVC), poly-methyl-methacrylate (PMMA) etc. The resulting blend will obviously have improved mechanical prop-erty of the latter and electrical conductivity of the former. However it is seen that in this process one has to sacrifice some electrical conductivity. Basically,
Appears in Departments:Department of Physics

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01_title page.pdfAttached File19.61 kBAdobe PDFView/Open
02_certificate.pdf21.52 kBAdobe PDFView/Open
03_declaration.pdf14.04 kBAdobe PDFView/Open
04_dedicated.pdf5.24 kBAdobe PDFView/Open
05_acknowledgement.pdf22.77 kBAdobe PDFView/Open
06_abstract.pdf126.18 kBAdobe PDFView/Open
07_content.pdf60.82 kBAdobe PDFView/Open
08_list of figures.pdf76.11 kBAdobe PDFView/Open
09_list of tables.pdf16.73 kBAdobe PDFView/Open
10_mathematical notations.pdf18.14 kBAdobe PDFView/Open
11_abbreviations.pdf14.78 kBAdobe PDFView/Open
12_chapter 1.pdf1.29 MBAdobe PDFView/Open
13_chapter 2.pdf1.33 MBAdobe PDFView/Open
14_chapter 3.pdf935.63 kBAdobe PDFView/Open
15_chapter 4.pdf352.27 kBAdobe PDFView/Open
16_chapter 5.pdf351.32 kBAdobe PDFView/Open
17_overall summary.pdf109.87 kBAdobe PDFView/Open
18_bibliography.pdf474.2 kBAdobe PDFView/Open
19_publication details.pdf86.69 kBAdobe PDFView/Open

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