The Effect of Additives on Fluid Friction 



O-CH.-CHr OjCHe-CK-d]CHrCK- 



-In 



.4 



Poly (Ethylene Oxide) 



CH^OH 



H H 



O O 



\/ 



/\ 



H \/ \/ 0» OH 



OH OH / \ H 



V 



CH^OH 



-"' A 



■ "O 



H H CHm 



I 

 H OH O 



fOM 



/ 



Ct^OH 



OH OH J 



H H 



n 



Guar 



Fig. 4 - Chemical formulas of two effective additives 



963 



