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        Last update : January 06, 2006

general index
Last developments in pulp bleaching - Ozone bleaching -
Chemical modification of fibres

EFPG research
EFPG Days, Fall 2005      
October 11th-12th, 2005 - Grenoble (France)

The following pages contain the summaries of courses dealing with the state of the art of pulp bleaching, ozone bleaching, chemical modification of fibres, and concerning the latest research results in these areas. The table of contents gives you the list of the topics which are actually covered. The authors are lecturers/teachers from EFPG (École Française de Papeterie et des Industries Graphiques) and researchers at CTP, Wedeco, Tembec and EDF R&D.

Table of contents
Abstr. Nr. Title Author
01   O3 Bleaching: status of development & recent advances Michel Muguet (Air Liquide)
First session - Ozone treatment of chemical pulps
02 Why using ozone for the bleaching of chemical pulps ? Tutorial Dominique Lachenal, Christine Chirat, Guillaume Pipon (EFPG)
03 Applying ozone on high kappa pulps (kraft and sulfite) to improve the bleached pulp yield. Christine Chirat, Dominique Lachenal, Dinah Nyangiro, Marie-Thérèse Viardin, Karine Janel (EFPG)
04 Ozone as  final bleaching stage: basic aspects and process performance. Guillaume Pipon, Christine Chirat, Dominique Lachenal (EFPG)
05 Effect of ozone on fiber morphology and papermaking properties. Raphaël Passas, Christine Chirat, Bertine Khelifi, Flora Ludovina (EFPG)
Second session - Improvement of bleaching response of chemical pulps
06 Reasons for bleachability problems and ways to resolve them. Dominique Lachenal, Christine Chirat, Nicolas Benattar, Yahya Hamzeh, Nathalie Marlin (EFPG), Christelle Mateo (Tembec-Tartas), Bernard Brochier (CTP)
07 Getting the best from chlorine dioxide bleaching. Christine Chirat, Dominique Lachenal, Gérard Mortha, Yahya Hamzeh (EFPG)
Third session - Ozone in mechanical pulping
08 Why using ozone in mechanical pulping ? Tutorial Dominique Lachenal (EFPG)
  09 Saving energy  by  application of an ozone treatment in the mechanical pulping process. Jean-Christophe Hostachy (Wedeco)
Fourth session - Fiber chemical modification
10 Surface modification of cellulose fibres, the state of the art. Naceur Belgacem (EFPG)
11 Effect of carboxyl groups on transformer board surface properties. Audrey Bourgeois, Gérard Mortha (EFPG), O. Moreau (EDF R&D)
12 Different ways to create carboxyl groups on cellulose. Effect of paper properties. Gérard Mortha (EFPG)
13 Yellowing problems due to the presence of created carbonyl and carboxyl groups on cellulosic fibres. Christine Chirat, Virginie de la Chapelle, Dominique Lachenal (EFPG)
Fifth session - Vegetal fillers to improve paper properties
  14 Micronised bleached sugar beet fillers to improve the strength properties of paper. Géraldine Champon (Tembec Tarascon)
15 Production of carbohydrate nanofillers (whiskers, microfibrillated cellulose, starch nanocristals). Their potential interest. Alain Dufresne (EFPG)


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