Fibre and paper chemistryLaajuus (5 cr)

Objective

You know the chemistry involved in the production of sulphate pulp and the related analysis methods.
You recognize the most essential quantities and chemical phenomena and the meaning of these in paper making chemistry and its management.
You recognize the most common fillers and additives used in paper making and the effect and meaning of these for the end product and runability of paper machines as well as for the equipment and the stock and water systems.
You recognize the theories and techniques of mixing the additives.
You recognize the retention mechanisms and the most often used retention chemicals and systems in paper machines.
You understand the effect of water circulation systems on colloidal substances and the means to minimize the effect of non-retain chemicals and colloidals.

Content

What are the cooking chemicals and their reactions in the sulphate cellulose process?
How are the properties of cooking chemicals measured?
How are the properties of produced cellulose determined?
What are the most important quantities in paper machine chemistry?
What kind of fillers and additives are used?
What properties do the additives and fillers bring to the end product and what is their role related to the runability of paper machines?
How is good mixing of fillers and additives ensured?
What is retention?
Which factors influence mechanical, filler and total retention?

Evaluation

Students are able to
a. use professional vocabulary systematically.
b. look for information in the key information sources of the field.
c. identify interrelated tasks.
e.use the key models, methods, software and techniques of the professional field.
f. work as team members in a goal-oriented way.