Paper Chemistry

Inbunden, Engelska, 1995

Av J.C. Roberts, J. C. Roberts, J C Roberts, J.C. Roberts, J. C. Roberts, J C Roberts

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This work aims to collect together advances in understanding in the chemistry of papermaking, and to provide a sound basis physico chemical basis of the subject. This edition includes a new chapter on polyelectrolytes. Emphasis is on the "wet end" of the papermaking process, that is the formation of paper from aqueous suspensions of fibre and additives. It is aimed at paper-mill chemists, research and development and technical departments of paper companies (and their chemical suppliers) and also academic departments and research institutes of paper technology.

Produktinformation

Utgivningsdatum1995-12-31
Mått155 x 235 x 25 mm
Vikt694 g
FormatInbunden
SpråkEngelska
Antal sidor267
Upplaga2
FörlagChapman and Hall
ISBN9780751402360

Tillhör följande kategorier

1 Applications of paper chemistry.- 1.1 Introduction.- 1.2 Paper chemical use in specific product grades.- 1.3 Trends in paper chemical use.- References.- 2 Accessibility of cellulose.- 2.1 Introduction.- 2.2 The concept of accessibility.- 2.3 Determination of crystallinity/accessibility of cellulose.- References.- 3 Electrokinetics of the papermaking industry.- 3.1 Introduction.- 3.2 The electrical double layer.- 3.3 Origin of the charge on papermaking fines, fibres, mineral pigments and fillers.- 3.4 The classical coagulation theory, DLVO theory.- 3.5 Electrophoresis and electrokinetic phenomena – calculation of the zeta potential.- 3.6 Some experimental methods of determining the zeta potential.- 3.7 Polyelectrolyte titrations.- References.- 4 Mechanisms of flocculation and stabilisation of suspensions by organic polymers.- 4.1 Introduction.- 4.2 Behaviour of suspensions of bare particles.- 4.3 A brief insight into polymer conformations in solution and at solid/liquid interfaces.- 4.4 Effect of nonionic polymers on suspension stability: Bridging flocculation and steric stabilization.- 4.5 Flocculation by polyelectrolytes.- 4.6 Conclusions.- References.- 5 Retention aids.- 5.1 Introduction.- 5.2 The chemical nature of retention aids.- 5.3 Mode of action of retention aids.- 5.4 Concluding remarks.- References.- 6 Dry-strength additives.- 6.1 Introduction.- 6.2 Cationic starch.- 6.3 Vegetable gums.- 6.4 Polyacrylamide resins.- References.- 7 Wet-strength chemistry.- 7.1 Introduction.- 7.2 Mechanisms of wet-strength development.- 7.3 The chemistry and application of commercial wet-strength resins.- 7.4 Testing of wet-strength papers.- 7.5 Assessing the efficiency of wet-strength resins.- 7.6 Future trends.- References.- 8 The sizing of paper with rosin and alum at acidpHs.- 8.1 Introduction.- 8.2 Background.- 8.3 Sizing theories.- 8.4 Rosin sizing at pHs greater than 5.5.- 8.5 Summary.- References.- 9 Neutral and alkaline sizing.- 9.1 Introduction.- 9.2 Reasons for changing to neutral sizing.- 9.3 Alkyl ketene dinners.- 9.4 Alkenyl succinic anhydride.- 9.5 Comparisons between AKD and ASA sizing.- 9.6 Neutral rosin sizing systems.- References.- 10 Dyes and fluorescent whitening agents for paper.- 10.1 Introduction.- 10.2 Basic concepts of colour.- 10.3 Classification of dyes and pigments.- 10.4 Dyes and pigments for paper.- 10.5 Application of dyes and pigments for paper.- 10.6 Fluorescent whitening agents (FWAs).- 10.7 Ecotoxicology.- Acknowledgements.- References.- 11 Physical and chemical aspects of the use of fillers in paper.- 11.1 Introduction.- 11.2 Filler properties.- 11.3 Retention.- 11.4 The effect of filler on paper properties.- 11.5 General summary.- References.- 12 Measurement and control.- 12.1 Introduction.- 12.2 Current status of wet-end chemistry measurement.- 12.3 Problems in measurement and control in wet-end chemistry.- 12.4 On-line wet-end chemistry instrumentation.- 12.5 Process control in wet-end chemistry.- 12.6 On-line retention monitoring systems.- 12.7 Monitoring of on-line surface charge.- 12.8 Methodology for complete automatic retention control.- 12.9 Applicability of new sensing devices and techniques.- 12.10 Concluding remarks.- References.- 13 Practical applications of paper chemistry.- 13.1 Introduction.- 13.2 Retention.- 13.3 Starch.- 13.4 Sizing.- 13.5 Deposit control.- 13.6 Difficulties and limitations of practical applications.- References.