Download e-book for iPad: Chemistry of Modern Papermaking by Cornel Hagiopol

By Cornel Hagiopol

ISBN-10: 1439856443

ISBN-13: 9781439856444

"Chemistry of contemporary Papermaking offers a chemist's viewpoint at the papermaking strategy. With approximately three% of the mass of a paper product invested in water-soluble chemical compounds, paper makers can regulate the rate and potency of the method, reduce and reuse surplus fabrics, and differentiate a paper product as required via particular consumers. With examine and improvement scattered throughout educational journals or

"Foreword Readers of this publication are in for a pleased event! The authors of Chemistry of contemporary Papermaking in actual fact have a profound enthusiasm for his or her subject material, of which they care approximately deeply and need to percentage with their viewers. even though there were different textbooks facing the chemistry of papermaking, this publication achieves a massive new milestone in bringing jointly a wealth of perception in regards to the chemical thoughts which may have useful use in a state of the art papermaking facility. by no means prior to has a textbook compiled, conscientiously digested, and lucidly defined the sort of deep number of info from either the patent and medical literature. This synthesis is completed not just via diligent paintings, but additionally displays the years of commercial event of the authors. Readers also will fast come to recognize Hagiopol and Johnston's presents for teaching--especially the educating of chemistry. because the authors themselves nation extra successfully of their ebook, one of many very important ideas of the chemistry of papermaking is that of "leveraging." With generally basically approximately three% of the mass of a paper product invested in water-soluble chemical substances, the papermaker can in achieving dramatic results. at the one hand, she or he can tremendously bring up the potency of the process--including the construction price. for example, by way of retention aids, the potency of maintaining high quality debris within the paper may be greater. not just does this support to lessen wasted fabrics, however it additionally is helping papermakers to prevent major discharges of waterborne elements as liquid effluent. An optimized wet-end chemistry application may also in achieving larger premiums of water elimination, which frequently permits papermakers to hurry up the process"--Provided through publisher. Read more...

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By Cornel Hagiopol

ISBN-10: 1439856443

ISBN-13: 9781439856444

"Chemistry of contemporary Papermaking offers a chemist's viewpoint at the papermaking strategy. With approximately three% of the mass of a paper product invested in water-soluble chemical compounds, paper makers can regulate the rate and potency of the method, reduce and reuse surplus fabrics, and differentiate a paper product as required via particular consumers. With examine and improvement scattered throughout educational journals or

"Foreword Readers of this publication are in for a pleased event! The authors of Chemistry of contemporary Papermaking in actual fact have a profound enthusiasm for his or her subject material, of which they care approximately deeply and need to percentage with their viewers. even though there were different textbooks facing the chemistry of papermaking, this publication achieves a massive new milestone in bringing jointly a wealth of perception in regards to the chemical thoughts which may have useful use in a state of the art papermaking facility. by no means prior to has a textbook compiled, conscientiously digested, and lucidly defined the sort of deep number of info from either the patent and medical literature. This synthesis is completed not just via diligent paintings, but additionally displays the years of commercial event of the authors. Readers also will fast come to recognize Hagiopol and Johnston's presents for teaching--especially the educating of chemistry. because the authors themselves nation extra successfully of their ebook, one of many very important ideas of the chemistry of papermaking is that of "leveraging." With generally basically approximately three% of the mass of a paper product invested in water-soluble chemical substances, the papermaker can in achieving dramatic results. at the one hand, she or he can tremendously bring up the potency of the process--including the construction price. for example, by way of retention aids, the potency of maintaining high quality debris within the paper may be greater. not just does this support to lessen wasted fabrics, however it additionally is helping papermakers to prevent major discharges of waterborne elements as liquid effluent. An optimized wet-end chemistry application may also in achieving larger premiums of water elimination, which frequently permits papermakers to hurry up the process"--Provided through publisher. Read more...

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Additional resources for Chemistry of Modern Papermaking

Sample text

Synthetic polymers are obtained in much more flexible processes in which their molecular weight and structure can be more easily managed. The molecular weights, the sequence of the monomer units, the linear structure, and/or the number of branches are designed during their synthesis [424]. Synthetic polymers used as paper chemicals must perform under particular conditions: various pH values, the presence of electrolytes and polyelectrolytes, and in a suspension with various surfaces (including cellulose fibers).

The diluted systems reduce the grafting yield. Heterogeneous systems allow for a higher grafting yield. Styrene grafted polymerization on pulp is improved by the presence of acrylonitrile [69]. Starch and monomers are dispersed [402] in a water-immiscible solvent (xylene or C8 isoparaffins [404]) and then the oil phase is dispersed in water. In this case, the starch concentration can be much higher (50%) and the grafting efficiency increases. There are several approaches to improve the grafting efficiency.

Most macromolecular paper chemicals are polyelectrolytes. The shape of the polyelectrolyte coil depends on the presence and the concentration of the other electrolytes or polyelectrolytes [429,467–469]. The retention of the melamine–formaldehyde resins depends on the electrolyte concentration, and on the pH [468]. The change in shape of the macromolecular coil can be very drastic: cationic polyacrylamide precipitates due to the presence of potassium carbonate, sodium or ammonium sulfate [470,471].

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Chemistry of Modern Papermaking by Cornel Hagiopol


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