نتایج جستجو برای: papermaking
تعداد نتایج: 528 فیلتر نتایج به سال:
Abstract The complete valorization of the lignocellulosic fractions plays a fundamental role in biorefineries’ sustainability. One major challenges is finding technological configurations that allow using cellulose, hemicellulose, and lignin simultaneously. Cellulose has been extensively studied, yet, hemicellulose remain as platforms to be valorized. Sequential pretreatments have shown an oppo...
Abstract The specific surface area (SSA) of cellulosic or lignocellulosic fibers is seldom reported in the recent literature on papermaking, despite its close relation with degree refining and other key pulp properties. Amidst outdated assays (Pulmac permeability test) methods that, while accurate, are doubtful usefulness for papermaking purposes (N 2 adsorption–desorption), we suggest a method...
The adsorption of polysaccharide guar gum and starch additives and their interactions with cellulosic fiber and fines, as well as soluble and colloidal carbohydrates, present in wood pulp suspensions were investigated by employing HPLC and spectrophotometry. A unique phenomenon, i.e. carbohydrate uptake or ‘substraction’, was observed to occur in a variety of cellulosic systems [whole pulp, was...
Carrageenans are commercially important sulfated gums found in various species of red seaweeds (Rhodophyta), wherein they serve a structural function similar to that of pectins in land plants. In this study, carrageenan was used independently or in combination with cationic polyacrylamide (CPAM) and/or Al2(SO4)3 to explore its application as a dry strength additive in papermaking. Strength inde...
[This corrects the article DOI: 10.1371/journal.pone.0171326.].
Zizania latifolia is a vegetable that native to China. Z. has long history and huge yield. Usually, the biological mass of leaves sheaths account for 50% 70% total plants, so there lot residual straw after cultivation. This causes pollution local environment rivers. At same time, non-wood fiber materials have always been one raw used in paper industry. The purpose this study was turn large-scal...
Over 20 years ago, it was thought that the paperless office (or close to it) would be a reality by 2011. Ironically, since then print volume has actually increased, as people now print emails, web pages, etc. Additionally, paper used for packaging, tissue products and newsprint demonstrate how prevalent paper usage is in daily activity. The rich history of the papermaking industry in New Hampsh...
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