Results 61 to 70 of about 1,901 (201)

Effect of particle size on the surface properties and morphology of ground flax [PDF]

open access: yes, 2013
Flax fibers were ground with a ball-mill and four fractions with different size ranges were collected by sieving. These were tested for water sorption, degree of polymerization (DP), copper number, hydroxyl number and analyzed by X-ray diffraction (XRD),
Bandi, Éva   +5 more
core   +1 more source

DUAL-POLYELECTROLYTE ADSORPTION OF POLY(ALLYLAMINE HYDROCHLORIDE) AND XYLAN ONTO RECYCLED UNBLEACHED KRAFT PULPS

open access: yesBioResources, 2012
The effects of a double polyelectrolyte adsorption of poly(allylamine hydrochloride) (PAH) and xylan (Xyl) on a recycled unbleached softwood kraft pulp were studied. The kinetics of PAH adsorption on this pulp was analyzed by building adsorption isotherms and by estimating the surface nitrogen adsorbed through the X-ray photoelectron spectroscopy (XPS)
Galván, María Verónica   +3 more
openaire   +3 more sources

Understanding Polyamidoamine Epichlorohydrin (PAAE) Retention in Paper

open access: yesBioResources
Polyamidoamine epichlorohydrin (PAAE) is a permanent wet strength resin used in papermaking. When applied to paperboard, some amount of resin is retained in the sheet, and some is lost to the white water.
Yao Ntifafa, Yun Ji, Peter W. Hart
doaj   +2 more sources

A Study of the Feasibility of Using a Pulping Aid with Polysulfide Kraft Cooks [PDF]

open access: yes, 1970
The purpose of this paper was to determine the feasibility of using a pulping aid with a polysulfide kraft cook. Since any change in an operation such as pulping must yield a product such that the quality is better or not appreciably reduced and at the ...
McCarty, Terrence R.
core   +1 more source

Understanding the potential of bamboo fibers in the USA: A comprehensive techno‐economic comparison of bamboo fiber production through mechanical and chemical processes

open access: yesBiofuels, Bioproducts and Biorefining, Volume 18, Issue 5, Page 1565-1584, September/October 2024.
Abstract The growing interest in bamboo fibers for pulp, paper, and board production in the USA necessitates a comprehensive financial viability assessment. This study conducts a detailed technoeconomic analysis (TEA) of bamboo fiber production, primarily for the consumer hygiene tissue market although it is also applicable to other industrial uses ...
Keren A. Vivas   +11 more
wiley   +1 more source

Effect of fungal pre-treatment of poplar chips on its paper brightness reversion [PDF]

open access: yesIranian Journal of Wood and Paper Industries, 2017
Unbleached Kraft pulp made from poplar chips, Pre-treated by Trametes versicolor in 1, 2 and 3 weeks (Bio-Kraft pulp), was used as raw material in this study.
Esmaeil Rasooly Garmaroody   +2 more
doaj  

Bleaching of High Yield Mutual Sulphite Semichemical Pulp [PDF]

open access: yes, 1958
The objective of this research project was to investigate the effect of various bleaching agents and procedures on brightness, degree of yellowness and retention of the original high yield of the unbleached neutral sulphite semichemical pulp. In order to
Reinhardt, Teodoro E.
core   +1 more source

Biomass‐based functional separators for rechargeable batteries

open access: yesBattery Energy, Volume 3, Issue 5, September 2024.
The global shift toward sustainable energy prompts innovation in energy storage. Biomass‐derived separators offer eco‐friendly alternatives to traditional polyolefin‐based separators, addressing environmental concerns. This review examines development, manufacturing, performance, and sustainability, highlighting biomass as a key resource for ...
Yongbo Xia   +6 more
wiley   +1 more source

DESORPTION OF METAL IONS FROM KRAFT PULPS. PART 1. CHELATION OF HARDWOOD AND SOFTWOOD KRAFT PULP WITH EDTA

open access: yesBioResources, 2010
Chelation of unbleached and oxygen bleached hardwood and softwood kraft pulps with EDTA was studied. The main focus was on the desorption of magnesium, manganese, and iron due to their impact in TCF-bleaching.
Kim Granholm, Leo Harju, Ari Ivaska
doaj  

Conversion of WastePaper into Dissolving Pulp: A Path for Circular Bioeconomy

open access: yesChemistrySelect, Volume 9, Issue 30, August 12, 2024.
The potential of wastepaper to produce dissolving pulp was demonstrated in this article. By employing and optimizing chemical processes to wastepaper pulp, a noteworthy increase of 84 % in pulp Fock reactivity was achieved (from 45.6 % to 84.1 %). The pulp characteristics were followed throughout the different treatments allowing better understanding ...
Thalita P. Damaceno   +3 more
wiley   +1 more source

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