Number of hours
- Lectures -
- Projects -
- Tutorials -
- Internship -
- Laboratory works 8.0
ECTS
ECTS 10.0
Goal(s)
Learning outcomes :
- To measure and control the pH and electrical conductivity of fibrous suspensions.
- To measure the zeta potential of cellulosic fibres.
- To use the zeta potential values to observe the effect of introducing additives into a fibrous suspension.
- To make shapes for different pastes and different dosages of additives.
- To establish a list of physical and mechanical properties based on the additives tested Carry out mechanical and physical tests on the manufactured forms.
- To synthesize the results of the experiments, analyze the experimental results, and present the experiments conducted and the experimental results obtained in teams (CR, graphs and tables of results showing mean, standard deviation, coefficients of variation, appropriate units).
Responsible(s)
Evelyne MAURET
Content(s)
This teaching corresponds to a series of pratical works which operate as a mini-project, the goal of which is to apply the theoretical knwoledge related to the course "4FMT1061 : Physical chemistry for papermaking processes".
Each group of students (made of 6 to 8 persons) specifically studies one kind of additive commonly used in papermaking. The experimental methods, the obtained results and their analysis are then presented to the entire student class.
This mini-project is made of 4 sessions.
session 1.The students have at their disposal two fibrous suspensions and additives classicaly used as wet-end chemicals for imparting specific properties to paper. The students define their own objectives for one kind of additive and prepare fibrous suspensions for which pH and conductivity are controled. The effect of the additive on the zeta potential of the fibres is evaluated. Then, the students produce handsheets from the fibrous suspensions for the different dosages.
Séance 2 : Les étudiants établissent une liste de propriétés physiques et mécaniques qui leur paraissent pertinentes au regard des additifs testés. Ils réalisent ces essais sur les formettes qu'ils ont fabriquées.
Session 2. The students list the relevant physical and mechanical properties that they want to study, regarding the addtives tested. They perform the tests on the produced handsheets.
Session 3. This corresponds to a an analysis and a discussion of the obtained results which must have been consolidated by the students before the session.
Session 4. The students make an oral presentation of their work to the entire class.
Basic knowledge:
- of the main sorts of pulps and of the papermaking process,
- of the physical and mechanical properties of paper and board,
- in polymer chemistry and physical chemistry.
Test
- Specific credits: this course brings 1.0 ECTS to students in Paper Sciences Level 2
En cas d’enseignement classique (en présentiel) :
Note finale (/20) = 0.6A + 0.4B
En cas d'enseignement à distance et selon les conditions sanitaires, la note finale sera celle du rapport écrit. Selon la durée de l’enseignement à distance, elle pourra être pondérée par une évaluation individuelle (B) correspondant à l’implication de l’élève au cours des séances dédiées à ce projet.
Note finale (/20) = A ou Note finale (/20) = 0.8A + 0.2B
Calendar
The course exists in the following branches:
- Curriculum - Pagora Engineer - Student - Semester 8
- Curriculum - - Semester 8
Additional Information
Course ID : 4FME3070
Course language(s): 
You can find this course among all other courses.
Environmental security
Consignes données en début de séance
Bibliography
[1] Eklund, D., and Lindström, T., Paper Chemistry, DT PaperScience Publications, Grankulla, Finland, 1991.
[2] Scott, W.E., Principles of Wet End Chemistry, TAPPI Press, Atlanta, Georgia, USA, 1996.
[3] Roberts, J.C., The Chemistry of Paper, The Royal Society of Chemistry, Cambridge, UK, 1996..
[4] Neimo, L., Editor, Papermaking Chemistry, Fapet Oy, Helsinki, Finland, 1999..
[5] Scott, W.E., and Abott, J.C., Properties of paper: An Introduction, 2nd edition, TAPPI Press, Atlanta, Georgia, USA, 1995.
[6] Paulapuro, H., Paper and board grades, Fapet Oy, Helsinki, Finland, 2000 [co-edition with TAPPI, Atlanta, Ga.].
[7] Hubbe, M. (2006). Bonding between cellulosic fibers in the absence and presence of dry-strength agents: a review, Bioresources, 1(2), 281-318.
[8] Lindström, T., Wägberg, L., and Larsson, T. (2005). On the nature of joint strength in paper: A review of dry and wet strength resins used in paper manufacturing, Proceedings of the 13th Fundamental Research Symposium, Cambridge, 457-562.
[9] WAGBERG L., ANNERGREN G. Physicochemical characterization of papermaking fibres.
in The Fundamentals of papermaking materials, transactions of the 11th fundamental research symposium, Cambridge, 1997, p.-82.
[10] CHAN L.L. Wet-strength resins and their application. Atlanta : TAPPI Press, 1994.