Table \.--DTA thermal behavior of cellulose and (NHi^) 2HP0i^ treated cellulose 









Nitrog'=>n 







Air 













Peak 





: Peak 





Peak : 





Peak 



Treatment 



nermal 



temperature 

 °C. 



: Thermal 



: temperature 

 : °C. 



Thermal 



temperature : 

 °C. : 



Thermal 



temperature 

 °C. 







■' • ' -:Ct 



: effect 



effect 



effect 



Untreated 



















cellulose 







endo 



364 



endo 



354 



exo 



377 



Treated 



















cellulose^ 



















0. 



0500 







endo 



347 



endo 



342 



exo 



372 





100 







endo 



340 



endo 



337 



exo 



367 





200 







endo 



329 



endo 



. 327 



exo 



363 





300 







endo 



330 



endo 



322 



exo 



367 





400 







endo 



327 



endo 



317 



exo 



362 





500 







endo 



324 







exo 



357 





700 







endo 



321 







exo 



363 



1. 



00 







endo 



516 







exo 



367 



1. 



50 







endo 



308 







exo 



361 



2. 



00 







endo 



303 







exo 



360 



3. 



00 







endo 



293 







exo 



358 



6. 



00 







endo 



275 







exo 



355 



10. 







endo 



210 



endo 



269 



endo 



202 



exo 



353 



12. 







endo 



210 



endo 



265 



endo 



201 



exo 



360 



15. 







endo 



211 



endo 



263 



endo 



206 



exo 



363 



20. 







endo 



211 



endo 



257 



endo 



208 



exo 



370 



25. 







endo 



212 



endo 



262 



endo 



209 



exo 



375 



Percent by weight chemical. 



Table 2.--DTA thermal behavior of cellulose and (NHi^) 2SO1, treated cellulose 









Nitrogen 







Air 







Treatment ' 





: Peak : : 



Peak 





Peak : 





Peak 



Thermal 



: temperature : Thermal: 

 : °C. : effect: 



temperature 

 °C. 



Thermal 



temperature : 

 °C. : 



Thermal 



: temperature 

 : °C. 







effect 



effect 



effect 



Untreated 

















cellulose 





endo 



364 



endo 



354 



exo 



377 



Treated 



















cellulose-*^ 





















0500 





endo 



339 



endo 



339 



exo 



378 





100 





endo 



339 







exo 



372 





200 



endo 



263 endo 



347 







exo 



370 





300 



endo 



259 









exo 



364 





400 



endo 



258 









exo 



363 





500 



endo 



255 





endo 



258 



exo 



365 





700 



endo 



248 





endo 



258 



exo 



367 



1 



00 



endo 



248 





endo 



255 



exo 



368 



1 



50 



endo 



249 





endo 



256 



exo 



366 



2 



00 



endo 



246 





endo 



256 



exo 



363 



3 



00 



endo 



245 





endo 



254 



exo 



360 



4 



00 



endo 



243 





endo 



254 



exo 



358 



5 



00 



endo 



243 





endo 



254 



exo 



362 



6 



00 



endo 



243 





endo 



254 



exo 



357 



8 



00 



endo 



243 





endo 



254 



exo 



357 



10 







endo 



244 





endo 



257 



exo 



367 



12 







endo 



245 





endo 



256 



exo 



378 



15 







endo 



244 





endo 



256 



exo 



370 



20 







endo 



245 





endo 



256 



exo 



365 



25 







endo 



245 





endo 



256 



exo 



367 



Percent by weight chemical. 



24 



