Jan 18, 2020   4:13 a.m. Bohdana
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doc. Ing. Katarína Vizárová, PhD.
Identification number: 3902
University e-mail: katarina.vizarova [at] stuba.sk
 
Docentka CSc.,PhD. - Department of Wood, Pulp and Paper (IPM FCFT)
Department chief official - Department of Wood, Pulp and Paper (IPM FCFT)

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Basic information

Basic information about a final thesis

Type of thesis: Diploma thesis
Thesis title:depth penetration measurements of water soluble impregnating compounds into paper sheets
Written by (author): Ing. Viera Sjekelová
Department: Department of Wood, Pulp and Paper (IPM FCFT)
Thesis supervisor: doc. Ing. Katarína Vizárová, PhD.
Opponent:doc. RNDr. Milan Mikula, CSc.
Final thesis progress:Final thesis was successfully defended.


Additional information

Additional information about the final thesis follows. Click on the language link to display the information in the desired language.

Language of final thesis:Slovak

Slovak        English

Title of the thesis:depth penetration measurements of water soluble impregnating compounds into paper sheets
Summary:The aim of the thesis was to design and test an experimental technique for measurements of depth of penetration of water soluble impregnating compounds into paper sheets. The method would then be used for monitoring kinetics of the impregnation. An apparatus for monitoring the presence of cations of impregnating solution in a paper was designed and tested. The impregnating compound is applied to the paper sheet in the form of microdrops of 3micrometer diameter by a compressed air nebuliser. Water soluble compounds containing cations of Mg2+, Zr4+, Zn2+, Na+, K+ and Ca2+ were used in combination with two types of paper which differed in their thicknesses and surface properties. Following conclusions could be drawn: it takes between 11 and 37 seconds for the impregnating compound to reach the other side of the paper sheet of type I. The fastest impregnation was achieved with Mg(HCO3)2 (ts = 11 s, tN = 9 s); while the Zirmel 1000 impregnator was the slowest one. The impregnation rate for the paper type I drops in the following order: Mg(HCO3)2, NaHCO3, Zn(CH3COO), Ca(CH3COO)2, K2CO3, Zirmel 1000, KHCO3.
Key words:Kinetics, penetration, deacidification


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