PAPERmaking! FROM THE PUBLISHERS OF PAPER TECHNOLOGY Volume 4, Number 1, 2018
for paper Ǧ based electronics, it is proposed here to impregnate paper with a low loss substance, after removing residual water. Hydroxyl accessibility and dimensional changes of Scots pine sapwood affected by alterations in the cell wall ultrastructure during heat-treatment, Michael Altgen et al , Polymer Degradation and Stability , online. There is a complex link between the water sorption behaviour and the presence of accessible hydroxyl groups in the wood cell wall, which can be altered by heat-treatment (HT). This study analyses the effect of changes in the cell wall ultrastructure caused by two HT techniques on the hydroxyl accessibility, water vapour sorption and dimensional changes of Scots pine (Pinus sylvestris L.) sapwood. Comparison of test methods for oxygen permeability: Optical method versus carrier gas method, Kajetan Müller et al , Polymer Testing , Vol.63. The oxygen permeability of films is relevant for packaging related and technical applications. An increasingly used test method for the measurement of oxygen permeability is the optical test method, because it allows a simple and cost-efficient measurement setup. This method is based on optical chemical sensors. However, not much is known about its validity. Therefore, method validation is necessary which is subject of this study. The optical method is compared with the carrier gas method for a variety of film samples. Optical coherence tomography image analysis of polymer surface layers in sound- absorbing fibrous composite materials, Eulalia Gliścińska et al , Polymer Testing , Vol.63 . The material surface layer affecting sound absorption was identified by optical coherence tomography (OCT) image analysis. To characterise this layer, a special algorithm was developed to distinguish the polymer surface layer in thermoplastic composite materials, define its structure and thickness, and specify differences in these properties. The results of the measured sound absorption coefficient were analysed together with the OCT results. The use of OCT for the study of materials with specific acoustic characteristics was successfully demonstrated. Study on the method for testing the water vapor diffusion resistance of membranes, Wei Li and Ye Yao, Polymer Testing , Vol.69. Water vapour diffusion resistance is an important property of porous membranes. In the paper, a new apparatus for specially measuring the water vapor diffusion resistance of porous membranes was developed. The new apparatus is a simple, low-cost and time-saving alternative for measuring the water vapour diffusion resistance of porous membranes. WASTE TREATMENT Screening Predominant Bacteria and Construction of Efficient Microflora for Treatment of Papermaking White Water, Huixia Lan et al, BioResources , Vol.13 (2). Three strains of bacteria were isolated and purified from activated sludge for white water treatment in the laboratory. These strains were identified as Bacillus subtilis , Bacillus cereus , and Virgibacillus pantothenticus through a morphological analysis, the MIDI Sherlock automatic microbial identification system, and 16S rRNA methods. The results of the construction of efficient microflora for white water showed that a mass percentage ratio of B. subtilis , B. cereus , and V. pantothenticus of 50%:35%:15% achieved an optimal treatment effect. Metallo-Terpyridine-Modified Cellulose Nanofiber Membranes for Papermaking Wastewater Purification, Mohammad Hassan et al , Journal of Inorganic and
Technical Abstracts
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