Introduction
Today we are going to learn about 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, thats why it is important to know how cellulose is made. We will see an excelent video from youtube about cellulose manufacturing process. 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.
Šis Webquest ir veidots par celulozes ražošanas procesu. No celulozes tiek radīts ne tikai kartons un papīrs, bet to izmanto arī kā vienu no izejvielām apģērbu ražošanā, lūpukrāsās un daudz kur citur. Tāpēc ir svarīgi katram izzināt celulozes ražošanas procesu no A līdz Z. Mācību vielas apguvē tiks izmantots youtube video, kurā tiek parādīts un pastāstīts celulozes ražošanas process un iegūtie materiāli.
In this lesson we will know much more about it and we will strengthen our knowledge! Are you ready?
Task
You need to answer these questions in a Word document and give your answers to your chemistry teacher next lesson.
1. From what cellulose is obtained?
A) Wood
B) Petroleum
C) Oil
2.What kind of products are mainly made from cellulose?
A) Leather bags
B) Paperboard, paper
C) Electronic products
3.What kind of products cellulose can be converted?
A) Silicates
B) Cellophane, viscose, rayon
C) Metal
4. Which machine is use first in the cellulose manufacturing process?
A) Chipping machine
B) Simmer machine
C) Washing machine
5. What substances are added in the digester machine to make cellulose?
A) Only water
B) Sulphurous acid, sulphur dioxide, water, wood
C) Only sulphur dioxide
6. How long substances in digester machine are cooked?
A) 5-6 hours
B)2-3 hours
C)7-8 hours
7. Where lignin is remove from fibre?
A) Washing machine
B) In the air
C) Simmer machine
8. What need to add, to make cellulose white?
A) Oil, chlorine dioxide.
B) Petroleum
C) Chlorine dioxide, caustic soda, hypercloride
9. How width is specialised cellulose from the machine?
A) 5 metres
B) 4 metres
C) 3 metres
10. In which products cellulose is not used?
A) Lipsticks, glasses
B) Clothes, ice-creams
C) Radiators
Process
In order to correctly answer the 10 questions, carefully watch youtube video about cellulose manufacturing process and then answer the questions. You will have 3 options in every question. Only 1 answer ir right! You can watch this video several times, if you have some difficulties to answer the questions. Be sure to read the all questions correctly to avoid inadvertent errors.
Evaluation
Valuation Table:
|
Points |
Your mark |
|
10 |
10 |
|
9 |
9 |
|
8 |
8 |
|
7 |
7 |
|
6 |
6 |
|
5 |
5 |
|
4 |
4 |
|
3 |
3 |
|
2 |
2 |
|
1 |
1 |
For each mistake , your mark is reduced by one.
Right answers:
1.-A 6.-C
2.-B 7.-A
3.-B 8.-C
4.-A 9.-C
5.-B 10.-C
Conclusion
Carrying out this work, you will gain new knowledge about cellulose manufacturing process as well as learn how to solve the problems related to this topic. Now you will know how cellulose are made, where we use cellulose and why it is important to sort cellulose waste , because cellulose manufacturing pollute nature.
Thank you for your time to fill this webquest. I am sure that your new knowledge will improve your skills!