Content (Syllabus outline)

Repetition of knowledge about the structure and chemical composition and molecular structure of wood pulp (chemical structure of cellulose, cellulose conformation, intremolecular hydrogen bonding and the supramolecular structure of cellulose).

Basic concepts, definitions and logic;

            Macrofibilated cellulose

            Microfibrilated cellulose

            Nanofibrilated cellulose

            Cellulose nanocrystals

            Crystallinity of cellulose nanofibrils

Extraction of micro-and nanofibrilated cellulose from woody fibers on the mechanical and chemical means; monitoring reaction, influence of selected parameters on the reaction, characterization of the resulting product with FT-IR spectroscopy.

Nanoceluloze drying process, the different methods of drying, problem of hornification and redispersion.

The possibility of using cellulose nanofibrils acquired form woody fibers.

Prerequisites

1. Prerequisites for the work:

• entry in the corresponding year of the study programme

2. Terms of prerequisites:

• attendance at tutorials
• laboratory report