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Przyspieszone starzenie papieru gazetowego: zmiany w zdolności pęcznienia, WRC i elektrokinetycznych właściwościach włókien
Języki publikacji
Abstrakty
The present paper deals with the effect of accelerated ageing on the ability of fibres to undergo saturation with water and the corresponding swelling kinetics. Changes in the surface charge of aged paper fibres were also investigated. Accelerated ageing was performed with newsprint paper at 98 °C and 50% RH during 0, 3, 5,7, 10, 15, 20 and 30 days. The rate and maximum swelling of accelerated aged paper in water were obtained with a modified monitoring unit measuring wood swelling ability. Since paper swells extremely fast in water, even at 30 °C, this apparatus made it possible for the first time to obtain accurate kinetic data on aged paper swelling in water. The polyelectrolyte titration technique was used to investigate changes in the surface charge on fibres from accelerated aged paper.
Praca dotyczy efektów przyspieszonego starzenia papieru gazetowego na zdolność włókien do nasycenia wodą związanego z kinetyką spęczniania. Badano również zmiany w ładunkach powierzchniowych włókien po przyspieszonym starzeniu. Szybkość oraz maksymalną wielkość spęcznienia badano za pomocą zmodyfikowanego przyrządu służącego do badania pęcznienia drewna. Biorąc pod uwagę, że papier pęcznieje w wodzie ekstremalnie szybko, badania prowadzone wspomnianym przyrządem pozwoliły po raz pierwszy określić pęcznienie papieru z dużą dokładnością. Technika miareczkowania polielektrolitycznego pozwoliła zbadać zmiany w ładunkach powierzchniowych.
Czasopismo
Rocznik
Strony
108--113
Opis fizyczny
Bibliogr. 40 poz., rys., wykr., tab.
Twórcy
autor
- Slovakia, Bratislava, Slovak University of Technology, Faculty of Chemical and Food Technology, Institute of Polymer Material
autor
- Slovakia, Bratislava, Slovak University of Technology, Faculty of Chemical and Food Technology, Institute of Polymer Material
autor
- Slovakia, Bratislava, Slovak University of Technology, Faculty of Chemical and Food Technology, Institute of Polymer Material
autor
- Slovakia, Bratislava, Slovak University of Technology, Faculty of Chemical and Food Technology, Institute of Polymer Material
autor
- Slovakia, Bratislava, Institute of Inorganic Chemistry, Technology and Materials
Bibliografia
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Typ dokumentu
Bibliografia
Identyfikator YADDA
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