Thermo acoustic and optical properties of aqueous polyvinyl pyrrolidone (PVP-40) using spectroscopic techniques
IR@NISCAIR: CSIR-NISCAIR, New Delhi - ONLINE PERIODICALS REPOSITORY (NOPR)
View Archive Info| Field | Value | |
| Title |
Thermo acoustic and optical properties of aqueous polyvinyl pyrrolidone (PVP-40) using spectroscopic techniques
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| Creator |
Wananje, Kunal H
Kabara, Komal B Sonsale, Rahul P Kanshette, Mahesh S Sarode, Arvind V |
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| Subject |
Acoustical parameters
Polyvinyl pyrrolidone Molecular interaction Ultrasonic velocity |
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| Description |
276-281
Present study deals with the investigation of molecular interactions in aqueous polyvinyl pyrrolidone having molecular weight 40,000 (PVP-40) at different temperatures using acoustical and UV-Vis spectroscopic techniques. Ultrasonic velocity (<em>u</em>), density (ρ) and coefficient of viscosity (η) have been measured for aqueous solution of PVP- 40 in the concentration range 0.833-5.00 wt% at frequency 10 MHz. The measurements have been made at eight different temperatures, namely, 283.15, 288.15, 293.15, 298.15, 303.15, 308.15, 313.15, 318.15 and 323.15 K and at atmospheric pressure. The experimental results have been used to calculate various acoustical parameters such as adiabatic compressibility (β), acoustical impedance (<em>Z</em>) free length (<em>L</em><sub>f</sub>) and free volume (<em>V</em><sub>f</sub>), relaxation time (τ), absorption coefficient (α/<em>f</em><sup>2</sup>), Rao’s constant (<em>R</em>) and Wada’s constant (<em>W</em>). The variations of these parameters under different conditions of temperature and concentration have been used to discuss the nature and extent of intermolecular interactions between the component molecules. The results have been confirmed using UV-Visible spectroscopy. |
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| Date |
2018-04-16T10:16:48Z
2018-04-16T10:16:48Z 2018-04 |
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| Type |
Article
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| Identifier |
0975-0959 (Online); 0301-1208 (Print)
http://nopr.niscair.res.in/handle/123456789/44206 |
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| Language |
en_US
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| Rights |
<img src='http://nopr.niscair.res.in/image/cc-license-sml.png'> <a href='http://creativecommons.org/licenses/by-nc-nd/2.5/in' target='_blank'>CC Attribution-Noncommercial-No Derivative Works 2.5 India</a>
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| Publisher |
NISCAIR-CSIR, India
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| Source |
IJPAP Vol.56(04) [April 2018]
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