Introduction
In the end of 12th grade in chemestry, we have tought about cellulose. Here`s a video material which explains what cellulose is, from what it is made of and where we can use it.
https://www.youtube.com/watch?v=tT8bfaT9ogw
Cellulose manufacturing process.
Cellulose is one of many polymers found in nature and it is an excellent fiber. We use cellulose materials in our daily life, and mostly we don`t even know that! Thats why it is important to know how and from what cellulose is made and what can be made of cellulose. This video shows all the proceses how cellulose is made, what kind of substances are used and what kind of machines are used to made cellulose.
Task
Process
ANSWER ALL THE QUESTIONS BELOW, AFTER WATCHING THE VIDEO
- What trees are used to make paper in the video? (at least 2-3)
- Why are the wood chips cooked?
- What methods are used to make the bleaching process environment safe?
- How many liters of water is used to make 1 kg of paper?
- How much (%) of the water used can be recycled?
Evaluation
CHECK YOUR ANSWERS
- Birch, poplar, beech, eucalyptus, spruce, fir, pine
- To dissolve the lignin and separate plant fibers
- It's chlorine free and instead uses oxygen and peroxide.
- 100 liters
- 90%
Conclusion
This web quest should improve the knowledge of cellulose use and production process of some cellulose based products. :)
Credits
INFO WAS TAKEN FROM
- youtube.com