Effect of ethyl acetate on carbohydrate components and crystalline structure of pulp produced in aqueous acetic acid pulping
-
Esat Gümüşkaya
,
Mustafa Usta
Abstract
The aim of this study was to investigate the changes in carbohydrate components and the crystalline structure in hemp bast fibers by adding ethyl acetate to acetic acid/water pulping processes. It was found that ethyl acetate added to acetic acid/water process had a positive effect on yield, viscosity and carbohydrate components in pulp. It was assumed that the delignification ratio increased by adding ethyl acetate to aqueous acetic acid pulping. Xylose content in hemp bast fibers was affected more negatively in the ethyl acetate/acetic acid/water process than in the acetic acid/water one. Crystallinity and crystallite size were higher in pulp sample obtained by the acetic acid/water process without ethyl acetate.
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© 2008 Institute of Chemistry, Slovak Academy of Sciences
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Artikel in diesem Heft
- Application of isotachophoretic and conductometric methods for neomycin trisulphate determination
- A rhodamine-based Hg2+-selective fluorescent probe in aqueous solution
- A simple flow injection spectrophotometric determination method for iron(III) based on O-acetylsalicylhydroxamic acid complexation
- Global optimization for parameter estimation of differential-algebraic systems
- Effect of ethyl acetate on carbohydrate components and crystalline structure of pulp produced in aqueous acetic acid pulping
- Effects of acyl donor type, catalyst type, and reaction conditions on the activity and selectivity of Friedel-Crafts acylation
- Intramolecular MLOH/π and MLNH/π interactions in crystal structures of metal complexes
- A strategy for new macrocycle magnetic materials synthesis
- Rearrangement of N-(3-pyridyl)nitramine
- New Cu(II), Co(II), and Ni(II) complexes with thieno[2,3-b]pyridine and 2-methylthieno[2,3-b]pyridine as ligands: Synthesis and crystal structures
- Synthesis of saccharide precursors for preparation of potential inhibitors of glycosyltranferases
- Simultaneous spectrophotometric determination of minoxidil and tretinoin by the H-point standard addition method and partial least squares
- Adsorption and release of terbinafine hydrochloride: Effects of adsorbents, additives, pH, and temperature
- Determination of alkaloids in Corydalis yanhusuo using hollow-fibre liquid phase microextraction and high performance liquid chromatography
- Chemiluminescence mechanisms of cerium-norfloxacin and its application in urine analysis
- A rapid in vitro assay of cobalamin in human urine and medical tablets using ICP-MS
- Inverse gas chromatographic characterization of Porapak Q as an extractant of pollutants from aqueous media
