Principles of Wet End Chemistry PDF Download

Author: William E. Scott
Publisher: Tappi Press
ISBN: 9780898522860
Category : Technology & Engineering
Languages : en
Pages : 185

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Author: Cornel Hagiopol
Publisher: CRC Press
ISBN: 143985646X
Category : Science
Languages : en
Pages : 428

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Book Description
Chemistry of Modern Papermaking presents a chemist's perspective on the papermaking process. With roughly 3% of the mass of a paper product invested in water-soluble chemicals, paper makers can adjust the speed and efficiency of the process, minimize and reuse surplus materials, and differentiate a paper product as required by specific customers. W

Author: Christopher J. Biermann
Publisher: Elsevier
ISBN: 008053368X
Category : Technology & Engineering
Languages : en
Pages : 783

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Book Description
In its Second Edition, Handbook of Pulping and Papermaking is a comprehensive reference for industry and academia. The book offers a concise yet thorough introduction to the process of papermaking from the production of wood chips to the final testing and use of the paper product. The author has updated the extensive bibliography, providing the reader with easy access to the pulp and paper literature. The book emphasizes principles and concepts behind papermaking, detailing both the physical and chemical processes. - A comprehensive introduction to the physical and chemical processes in pulping and papermaking - Contains an extensive annotated bibliography - Includes 12 pages of color plates

Author: J C Roberts
Publisher: Royal Society of Chemistry
ISBN: 1847552064
Category : Technology & Engineering
Languages : en
Pages : 206

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Book Description
The manufacture of paper involves a large amount of chemistry, including carbohydrate chemistry, pigments and resins and colloid and surface chemistry, as well as elements of environmental and analytical chemistry. Providing an overview of the making of paper from a chemical perspective, this book deals with both the chemistry of paper as a material and the chemistry of its production. The book explores several chemical processes involved in the production of paper: the delignification of the wood fibres performed at elevated temperature and pressure, the bleaching of the cellulose-rich pulp using environmentally-friendly systems, the formation of the pulp into sheets of fibres strengthened by extensive inter-fibre hydrogen bonding, and finally the coating of the sheets in a manner appropriate to their end use. This book is an informative and entertaining overview for students and others who require an introduction to the chemistry of paper manufacture.

Author: Martin A. Hubbe
Publisher:
ISBN: 9781595103055
Category :
Languages : en
Pages : 0

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Book Description
To help engineers working in the pulp and paper industry to use papermaking additives more effectively, taking advantage of progress in implementation technologies.

Author:
Publisher:
ISBN: 9789525216004
Category : Papermaking
Languages : en
Pages : 329

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Author: Che On Au
Publisher: Springer Science & Business Media
ISBN: 9401707561
Category : Technology & Engineering
Languages : en
Pages : 215

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Book Description
Commercial demands and increasing global competition have led to enormous mechanical evolution over recent years. Twin-wires, wide-nip presses, steam boxes and speed sizers have all played a part in improving both the productivity and quality of paper and board products. With the emphasis on mechanical and electrical engineering and the ever increasing pressures of quality measurement and control, little time has been available within a technical department for much reflection on the chemistry of the process. Thus there is a growing trend for the management of the wet-end to be delegated to the chemical supplier. The advances in scale of paper manufacture, environmental sensitivity and higher quality of end-product requirements have all had an impact on the chemistry of the wet-end. The increased production means, for example, that down time is more of an anathema now when capacity is critical. Similarly, with the greater rigours of quality management, anything which causes breaks or holes must be eradicated. Environmental pressures too are growing on the papermaking process. Even if consideration is restricted to only the closure of the white water circuit, it alone throws down a challenge to the potency of biocides, retention aids and other chemicals. These chemicals are detriment ally affected by an increasing concentration of water soluble pulp extractives and surfactants, adhesives and polysaccharides from broke and recycled paper.

Author: J. Brander
Publisher: Springer Science & Business Media
ISBN: 9400914571
Category : Technology & Engineering
Languages : en
Pages : 283

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Book Description
With the exception of a slight hiccup during the height of the recent environmental movement (during the early 1990s), when for a year or two consumers were prepared to pay a price premium for lower quality recycled paper than for the virgin product, the inexorable improvement in the quality demanded of paper products continues. This demand for quality covers not only the aesthetics ofthe product but also its performance. Moreover, it is becoming increasingly the case that papers designed for a particular use must, as it were incidentally, also perform well in alternative applications. An example is that of office and printing papers, which are expected to perform as well in copier machines as in all the various forms of impact and non-impact printers. But even greater demands are made in other product areas, where board designed for dry foods can also be expected to protect moist and fatty materials and be made of 100% recycled fibre. The need to isolate foodstuffs from some of the contaminants that can affect recycled board is a· serious challenge. Thus, papermakers are constantly striving to meet a broadening spectrum of demands on their products; often while accepting declining quality of raw materials. The product design philosophy that has arisen in response to this is increasingly to isolate the bulk of a paper from its uses: to engineer the needed performance characteristics into the paper surfaces while more or less ignoring what happens inside.

Author: Ian Thorn
Publisher: Springer Science & Business Media
ISBN: 1402060386
Category : Science
Languages : en
Pages : 233

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Book Description
"Applications of Wet-end Paper Chemistry" bridges the gap between the theory and practice of wet-end paper chemistry by explaining how particular chemicals are chosen and put to use in real situations. A number of international experts in the field present recent contributions on the optimum use of chemicals in papermaking. Major inroads have taken place since the first edition of this title was published in 1995. This new edition of "Applications of Wet-end Paper Chemistry" will reflect the changing type and use of chemicals used in papermaking in the 21st century. Chemists and chemical engineers across the paper and pulp making industry, as well as in research and academic institutes will find this book of enormous practical value.

Author: Lock L. Chan
Publisher: Tappi
ISBN:
Category : Nature
Languages : en
Pages : 144

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