100 200 300 400 500 



Temperoture ( C ) 



Figure 6. — Thermogram of cellulose treated with 5 percent sodium hydroxide. 



Table 3. --Some thermal properties of cellulose and cellulose treated 

 with 5 percent ZnCl 2 or 5 percent NaOH 



Component 





Maximum rate 



Temperature 

 of initiation 



Hi) 



Residue 

 at 450° C 







mg./°C. 



°c. 



Percent 



Cellulose 





0.25 



320 



6 



Cellulose + 



5 percent 









ZnCl 2 





.05 



220 



38 



Cellulose + 



5 percent 









NaOH 





.04 



227 



40 



Organic basis. 



11 



