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High Temperature Material Processes (An International Quarterly of High-Technology Plasma Processes)

An International Journal

ISSN for PRINT: 1093-3611

Institutional price:	$604.00
Issues per year:	4

Best Paper Award Selection - Editorial Board Site

2007, Volume11

161 pages

DOI: 10.1615/HighTempMatProc.v11.i4

Issue price - $168.00

THE MODIFICATION OF PAPER INDUCED BY RADIO FREQUENCY AND MICROWAVE PLASMA TREATMENT

V. V. Azharonok
Institute of Molecular and Atomic Physics of the National Academy of Sciences of Belarus, F.Skaryna Av., 70, Minsk, 220072, Belarus

I. I. Filatova
Institute of Molecular and Atomic Physics of the National Academy of Sciences of Belarus, Nezavisimosti Ave., 70, Minsk, 220072, Belarus

A. P. Dostanko
Belorussian State University of Informatics and Radioelectronics, P. Brovki Str., 6, Minsk, 220027, Belarus

S. V. Bordusov
Belorussian State University of Informatics and Radioelectronics, P. Brovki Str., 6, Minsk, 220027, Belarus

Yu. S. Shynkevich
Belorussian State University of Informatics and Radioelectronics, P. Brovki Str., 6, Minsk, 220027, Belarus

ABSTRACT

Cellulose-based white typographical paper was treated by radio frequency (rf) (5.28 MHz) and microwave (2.45 GHz) discharge plasma as well as by rf magnetic field within the prebreakdown mode operation of a capacitively coupled rf discharge. Different parameters of plasma (duration of treatment, power, gas pressure) have been varied in order to investigate their influence on the paper process. Structural features of paper before and after the treatment have been investigated by attenuated total reflectance (ATR) and diffuse reflectance (DRIFT) infrared spectroscopy. The transformation of polarized light on paper surface was studied using a laser goniophotometric Stokes polarimeter. The DRIFT spectra are transformed in the range of 2800−3300 cm⁻¹ and 750−1000 cm⁻¹ as a result of plasma treatment of paper. The rf magnetic field action upon the paper results in a frequency shift in ATR spectra in the range of 1300−1500 cm⁻¹ as well as in the structural order reduction of cellulose molecules that leads to the decrease of bi-directional reflection and transmission coefficients of polarized light strikes through the paper sheet. The structural features of modified paper have been discussed taking into account orientation effects of cellulose macromolecules in the paper surface and change their conformational structure.