J Phys Chem A 2007 Oct 3;111(42):10530-6. Epub 2007 Oct 3.
Institute of Chemical Wood Technology and Chair of Chemistry, Agricultural University of Poznań, 60-623 Poznań, Poland.
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Bioresour Technol 2003 May;87(3):255-61
Departamento de Ingenieri;a Qui;mica, Escuela Politécnica Superior, Universidad de Huelva, Ctra. Huelva-Palos de la Frontera s/n, 21819 La Rábida, Palos de la Frontera, Huelva, Spain.
The influence of the operating conditions used in the bleaching of olive wood trimmings pulp (viz. hydrogen peroxide concentration and time) on the yield, kappa index and viscosity of the resulting pulp and on strength-related properties of paper sheets was studied to determine the optimal bleaching conditions of this pulp. Hydrogen peroxide bleached pulps at different sequences (oxygen, ozone, chlorine dioxide and alkaline extractions) were compared. Read More
Appl Spectrosc 2008 Nov;62(11):1274-9
Department of Biology, Middle East Technical University, 06531 Ankara, Turkey.
In-office and at-home bleaching techniques are widely used methods for the whitening of teeth. However, the safety of these techniques has not been clarified yet. The aim of the current study is to investigate the in-office- and at-home-bleaching-induced structural and quantitative changes in human enamel and dentin at the molecular level, under in vitro conditions. Read More
Appl Spectrosc 2004 Apr;58(4):404-9
Chemical Institute, University of Copenhagen, 5 Universitetsparken, DK-2100 Copenhagen, Denmark.
Spruce thermomechanical pulp (TMP) was oxidized by the 2,2'azinobis-3-ethylbenzthiazoline-6-sulfonate cation radical (ABTS*+) in the presence and absence of oxygen. The pulp modification was monitored by Fourier transform (FT) Raman difference spectroscopy and other nondestructive spectroscopic methods. The ABTS*+ oxidative system resulted in modifications very similar to the laccase-ABTS-oxygen system, except for the FT-Raman results, which showed a difference in mechanisms attributed to a difference in produced Raman bands. Read More
Ultrason Sonochem 2015 Mar 17;23:347-53. Epub 2014 Oct 17.
Dept. of Forest Product & Biotechnology, Kookmin University, 77 Jeongneung-ro, Seongbuk-gu, Seoul, Republic of Korea. Electronic address:
H2O2 was used in the final stage of a multistage bleaching process to increase ISO brightness by 2-3%, because of the poor selectivity and bleachability. However, concerns about the environmental load of the bleaching process have led to the efficient use of oxygen-derived compounds, with a concomitant decrease in the quantity of chlorine-derived compounds consumed. In this study, thermomechanical pulp (TMP) and unbleached kraft pulp (UKP) were bleached with H₂O₂ and ultrasonicated in order to increase the bleaching efficiency, and the effects of some bleaching conditions such as treatment time, treatment concentration, and temperature were determined. Read More