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Studies on selected polymeric materials using the photoacoustic spectroscopic technique |
| Hukum Singh |
| School of Engineering and Technology, ITM University, Gurgaon-122 017, India |
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Abstract Polymethylmethacrylate-graft-polybisphenol-A-carbonate (PMMA-G-PC) with 50% grafting is synthesized. The graft co-polymerization of methylmethacrylate (0.036 mol·lit-1) onto polybisphenol-A-carbonate (0.5 g) in the presence of a redox couple formed from potassium persulphate (40 mol·lit-1) and thio-urea (30 mmol·lit-1) in aqueous nitric acid (0.18 M, 100 ml) in air at (45±2)°C for 3.0 h. Condensation of (PMMA-G-PC) with N- [p-(carboxyl phenyl amino acetic acid)] hydrazide (PCPH) affords polybisphenol-A-carbonate-graft-polymethylmethacrylate hydrazide (PCGH). The photoacoustic (PA) spectra of (PCGH) are recorded in a wavelength range from 200 nm to 800 nm at a modulation frequency of 22 Hz, and compared with those of pure polybisphenol-A-carbonate (PC), (PMMA-G-PC) and (PCPH). In the present work, a non-destructive and non-contact analytical method, namely the photoacoustic technique, is successfully implemented for optical and thermal characterization of selected polymeric materials. The indigenous PA spectrometer used in the present study consists of a 300-W xenon arc lamp, a lock-in amplifier, a chopper, a (1/8)-m monochromator controlled by computer and a home-made PA cell.
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Received: 25 October 2010
Revised: 14 January 2011
Accepted manuscript online:
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PACS:
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78.20.Pa
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(Photoacoustic effects)
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78.20.nb
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(Photothermal effects)
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Cite this article:
Hukum Singh Studies on selected polymeric materials using the photoacoustic spectroscopic technique 2011 Chin. Phys. B 20 067803
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| [1] |
Joshi S K, Kapil J C, Rai A K and Zaidi M G H 2003 Physica Status Solidi 199 321
|
| [2] |
Zaidi M G H, Shukla J S and Dixit S K 1997 Asian J. Chemistry9 583
|
| [3] |
Joshi S and Rai A K 1995 Asian J. Phys.5 181
|
| [4] |
Sidman J W 1958 Chem. Rev.58 689
|
| [5] |
Rao C N R 1967 Ultraviolet and Visible Spectroscopy 2nd edn. (London: Butter Worth & Co Ltd) p. 24
|
| [6] |
Rao C N R 1967 Ultraviolet and Visible Spectroscopy 2nd edn. (London: Butter Worth & Co Ltd) p. 65
|
| [7] |
Doub L and Vandenblt J M 1947 J. Am. Chem. Soc.69 2714
|
| [8] |
Gillam A E and Stern E S 1957 Electronic Absorption Spectroscopy (London: Edward Arnold)
|
| [9] |
Sixma F L J 1964 Manual of Physical Methods in Organic Chemistry (New York: John Willey and Sons)
|
| [10] |
Tager A 1978 Physical Chemistry of Polymers 2nd edn. (Moscow: Mir Publishers) Chap. 5 p. 419
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