Table 1 .--TGA-DTG thermal behavior of cellulose and (NHi^)2S0u, treated cellulose in air 









Low temperature peak 



High temperature peak 







Cellulose 



Rate of. Normalized . 



Rate of. Normalized. 



Treatment 



Residue 



residue 



weight; rate of • Peak 



weight; rate of ; Peak 





at 450° C. 



at 450° C. 



loss weight loss temperature 



loss weight loss temperature 





Percent 



Percent 



Mg./min. Mg./min. °C. 



Mg./min. Mg./min. °C. 



Untreated 



cellulose 7.7 7.7 — -- — 8.41 8.41 349 



Treated 

 cellulose^ 







0500 



10 



4 



10 



4 













6 



29 



6 



29 



344 





100 



13 



2 



13 



2 













5 



00 



5 



01 



332 





200 



13 



8 



13 



8 













4 



56 



4 



57 



332 





300 



14 



3 



14 



3 







46 







46 



255 



4 



11 



4 



12 



330 





400 



15 







15 



1 





60 





60 



251 



4 



01 



4 



03 



326 





500 



16 







16 



1 





71 





72 



252 



3 



71 



3 



73 



325 





700 



18 



3 



18 



4 



1 



02 



1 



03 



257 



2 



93 



2 



95 



330 



1 



00 



18 



8 



19 







1 



12 



1 



13 



255 



2 



90 



2 



93 



327 



1 



50 



19 



6 



19 



9 



1 



43 



1 



45 



253 



2 



72 



2 



76 



324 



2 



00 



22 



6 



23 



1 



2 



13 



2 



17 



256 



1 



75 



1 



78 



318 



3 



00 



24 



1 



24 



7 



2 



69 



2 



77 



251 



1 



37 



1 



41 



311 



4 



00 



24 



8 



25 



7 



3 



22 



3 



35 



251 



1 



90 



1 



98 



306 



5 



00 



25 



2 



26 



4 



3 



38 



3 



56 



255 



1 



66 



1 



75 



310 



8 



00 



26 



9 



29 







3 



45 



3 



75 



256 



1 



75 



1 



90 



309 



10 







27 







29 



8 



4 



13 



4 



57 



255 





96 



1 



06 



308 



12 







26 



4 



29 



7 



3 



69 



4 



19 



257 



2 



11 



2 



39 



307 



15 







26 



3 



30 



6 



3 



50 



4 



12 



257 



1 



48 



1 



74 



312 



20 







25 



7 



31 



6 



2 



88 



3 



60 



255 













25 







25 



8 



33 



7 



3 



00 



4 



00 



257 













Percent by weight chemical. 



AflC/HAFB. Ogdin 



27 



