2.4 

 2.2 



2.0 



_) 

 O 



•'I I. a 



O 



1.6 



do 



; I 1.4 

 1.2 

 1.0 



100 I d 



80 i ! 



(T 10 

 Q- > 



100 

 90 



ii 



10 15 20 2; 



PROCESSING TIME IN MINUTES 



Fig. 10. — Curves showing change in solution viscosity I ^ J of sol, gel content, and 



swelling volume ot gel with time of milling. Both cold (A and B) and hot (C and D) 

 milling are shown for samples of synthetic rubber containing no gel and gel of low swelling 

 volume. 



378 



