Results 21 to 30 of about 1,867 (190)
Investigation on potential long fibre Pinus eldarica Kraft Pulp [PDF]
تحقیقات علوم چوب و کاغذ ایران, 1998 Kraft pulping of Pinus eldarica wood was carried out at 18% active alkali, 25% sulphidity and pulping temperature & Time of 165 C and 90 minutes pulp was compared with imported unbleached long fibre pulp with the kappa number of 34.
Fardad Golbabaei +4 more
doaj +1 more source
Química Nova, 2015 Bleached eucalypt kraft pulps are widely used in print and writing (P&W) and tissue paper manufacture. Among the quality requirements of pulp for these papers, xylan content has been controversial.
Valéria J. Gomes +4 more
doaj +1 more source
Studying the effects of laccase treatment in a softwood dissolving pulp: cellulose reactivity and crystallinity [PDF]
, 2014 An enzymatic biobleaching sequence (LVAQPO) using a laccase from Trametes villosa in combination with violuric acid (VA) and then followed by a pressurized hydrogen peroxide treatment (PO) was developed and found to give high bleaching properties and ...
Ariza, J. +5 more
core +2 more sources
Stellera chamaejasme Roots as Raw Material for Pulp Production
BioResources, 2014 Cellulosic pulps were prepared from Stellera chamaejasme roots using soda, soda-anthraquinone (soda-AQ), and kraft pulping processes. S. chamaejasme is composed of 73.5% holocellulose, 39.7% α-cellulose, and 17.6% lignin, similar to wheat straw and other
Haichao Li +3 more
doaj +1 more source
Purification of cellulosic pulp by hot water extraction [PDF]
, 2016 Hot water extraction (HWE) of pulp in a flow-through reactor was evaluated as a method to purify paper-grade pulps. About 50–80 % of the xylan and up to 50 % of the lignin in unbleached birch Kraft pulp was extracted by the HWE without losses in ...
Borrega Sabate, Marc, Sixta, Herbert
core +1 more source
Enhancing Antimicrobial Activity in Unbleached Kraft Pulp using Laccase and Phenolic Compounds
BioResources, 2012 Unbleached kraft pulp fibers were reacted with laccase in the presence of different phenolic compounds (isoeugenol, butyl p-hydroxybenzoate, p-coumaric acid, and ferulic acid) in order to confer them with new properties. After the enzymatic stage, antimicrobial tests demonstrated that the handsheets formed from the laccase/phenolic-treated pulp showed ...
Jicheng Pei +4 more
openaire +3 more sources
The Effect of Ultraviolet Light on the Color of Unbleached Pulps: Literature Survey [PDF]
, 1959 A literature survey was prepared which covered the published information on the effects of ultraviolet light on the color of unbleached pulps. Experiments were conducted with eight types of unbleached pulp which were converted into optical test pads ...
Brew, David L.
core +1 more source
From Hemp Bast to Lyocell Fiber: Sustainable Process Optimization for Lyocell‐Grade Dissolving Pulp
Journal of Applied Polymer Science, EarlyView.This study presents a sustainable method to produce lyocell‐grade dissolving pulp from Canadian hemp bast fibers. A simplified alkali‐chelation‐bleaching process, free from sulfur and chlorine, yielded high α‐cellulose pulp with low lignin and hemicellulose content. The pulp was successfully spun into continuous hemp‐based lyocell fibers, demonstrating
Md Abu Sayed +8 more
wiley +1 more source
Ultrastructural characterization (morphological and topochemical) of wood pulp fibres [PDF]
, 2007 Different electron microscopy techniques including SEM (scanning electron microscopy), FE-SEM (field emission-scanning electron microscopy), TEM (transmission electron microscopy) and Immuno-gold TEM (immuno-gold transmission electron microscopy) were ...
Fernando, Dinesh
core
Modification of kraft wood-pulp fibre with silica for surface functionalisation [PDF]
, 2008 A new science strategy for natural fibre modification was devised in which glass surface properties would be imparted to wood-derived fibre. The enhancements known from addition of silane reagents to glass fibre–polymer composites could therefore be ...
Franich, Robert A. +5 more
core +2 more sources