yes.. change the stereo symbol on the track ( at the bottom of the meter) to either left ( meaning it will only use the left side, or right, or mono..)
OR
leave it as stereo and change the output 1-2 to a mono channel ( ie 1) and press the bnce button on the channel strip
NB: do not use the hot key for bounce with a mono output channel as this will in fact render a stereo file - i found that out the hard way 30 files later :-(
alternatively do a stereo bnce as a split file and then youll have a separate .l and .r to play with.. use "disconnect selected split audio file" from the audio bin to separate them
when you get the mono file into the session use :
a stereo sample delay
the stereo spreader
a stereo chorus ,flanger etc
or even the direction mixer to play with the image
or drag in two copies ( one for left, one for right) and process one differently from the other
(bottom of page)