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Environmental threats, especially particulate matter, toxic gases and microbial pollution, have done serious harm to human health. In this paper, biodegradable composite filters were fabricated by an in situ deposition method to isolate pollutants and inactivate bacteria. The zeolitic imidazolate framework-8@cellulose fibers (ZIF-8@CF) filters had filtration efficiency as high as 98.36% and 99.94%...
This paper examines the mechanism of an enzyme pre-treatment on mechanical preparation of microfibrillated cellulose (MFC), the effects of hemicellulase and cellulase, on enhancing of the PFI refining efficiency of Northern Bleached Softwood Kraft pulp for fiber’s devillicate, and changing of morphologies and physical characteristics on fibers, such as specific surface area were investigated, respectively...
This article describes the preparation of novel aqueous spongy foams that are composed of three-dimensionally distributed wood-fiber networks stabilized with nanofibrillate cellulose (NFC) and/or microfibrillated cellulose (MFC). The free standing aqueous spongy foams were prepared with the entrapment of NFC and/or MFC—stabilized air-in-water (A/W) capillary foams using “gel trapping technique”. The...
The effect of cellulase pretreatment of bleached softwood kraft fiber before laboratory refining on the water vapor barrier and grease resistance properties of handsheets was investigated in this work. In contrast to no cellulase pretreatment, cellulase pretreatment at 0.5 filter paper units (FPU) combined with refining for 7500 revolutions was effective in reducing the water vapor transmission rate...
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