Man's physical universe

xanabras

"BETTER THINGS" FROM CELLULOSE 67 3

7. List the products obtained from cellulose by dissolving and reprecipitating it.

8. How has cellulose been made into a digestible carbohydrate for human use?

9. What is rayon? What different characteristics may be imparted to rayon?

10. What is lignin, and why does it constitute a problem for research today?

IL What are the disadvantages of lumber that the chemist might try to eliminate

either by treating the lumber or by producing new materials to replace

it?

12. Mention two products discussed in this lesson which have had a distinct

bearing upon our economic relationship with Japan.

13. Suggest some of the possible important and unexpected consequences of a

possible widespread use of "throw-away" products similar to "Pervel" to

replace cloth fabrics.

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