die strukturierung von filterfaseroberflaechen durch uv-laserbestrahlung. $left bracket$ structuring the fiber surface of filters by u. v. laser irradiation - a contribution to the improvement of the collection efficiency of filter textiles for fine du

the particle-fibre-adhesion is of great importance in the fine grain dust filtration by textile filter media. using the cotton dust filtration as example this contribution shows that the filter performance of a sieving fabric can be improved in the fine particle range by roughening the fabric fibres. the surface modification of the fibres..

acid-catalyzed degradation of cellulose linters in distinct ranges of degree of polymerization

cellulose linters with starting degrees of polymerization between 100 $less than$ dp//n $less than$ 6000 had been hydrolytically degraded (0. 5 m aqueous solution of khso//4, degradation temperature 40 $degree$ c and 60 $degree$ c) and the results compared with those obtained in a former study on pure cotton cellulose using the same degra..

conversion of cellulose into carboxylic acids by a drastic alkali treatment

cotton cellulose was treated with 1 and 3 m sodium hydroxide at 170-190 $degree$ c and the resulting mixtures were investigated by capillary gas-liquid chromatography-mass spectrometry. up to 65 products were identified including mainly straight-chain and branched-chain hydroxy monocarboxylic acids and dicarboxylic acids, of which lactic,..

solid state **1**3c n. m. r. study of the cellulose-i-ethylenediamine complex

the reversible complexation of valonia cellulose with ethylenediamine was investigated by high-resolution cp/mas **1**3c n m. r. spectroscopy and the previously unreported spectrum of the cellulose-i-ethylenediamine complex is presented. this spectrum shows only single resonances for each cellulose carbon atom, consistent with previous in..

biological efficiency and nutritive value of pleurotus sajor-caju cultivated on different agro-wastes

the oyster mushroom, pleurotus sajor-caju (fr. ) singer, was cultivated on a number of agro-residues and their mixtures biological efficiency, defined as the percentage conversion of substrate into fruit bodies on a dry weight basis, was found to be maximum on paddy straw supplemented with cotton seeds (12. 82 g/100 g substrate). the prox..

digestibility of some crop residues after steam/pressure treatments

this paper discusses the effectiveness of steam/pressure treatments in improving digestibility of cellulosic waste such as cotton seed hull and corn cobs. cotton seed hulls and corn cobs containing 20 moisture were separately treated with different concentrations of alkalis and were autoclaved at 121 $degree$ c for different lengths of ti..

effects of flame retardants on the properties of particle boards prepared from cottonseed hulls

the effects of fire retardants on the properties of particle boards made from cottonseed hulls were studied. the boards were treated with (1) 70 borax $plus$ 30 boric acid (fr(1)); (2) 60 borax $plus$ 25 boric acid $plus$ 15 ammonium dihydrogen orthophosphate (fr(2)) and were evaluated for duration of flaming, after-glow, charred area, ch..

thermal analysis of cellulose treated with boric acid or ammonium phosphate in varied oxygen atmospheres

thermal analyses (tg, dtg, and dsc) of cellulose treated with diammonium phosphate or boric acid were conducted in atmospheres of differing oxygen concentration (n//2, and 2. 5, 10, 21 o//2 in he) the weight loss process from both untreated and treated cellulose consists of a first, slow stage, a second, rapid stage, and a third, prolonge..

analysis of some textile blends using their x-ray diffraction patterns

x-ray diffraction methods were evolved for quantitative analysis of blend compositions in cotton/polyester, cotton/viscose, and cotton/ polynosic systems. these methods compare quite favorably with other accepted procedures. (author abstract) 16 refs

complex system for using the wastes from viscose fibre manufacturing

the rationality and efficiency of reprocessing nonstandard production and viscose fiber wastes into materials and articles which are necessary to the national economy is demonstrated constructional material reinforced with nonwoven material (in the form of a lap) are particularly promising, since they have a set of valuable properties and..