Thanks for the correction, my bad. The technical term for the kind of thing I was thinking of is 'multiscale composites', and there already seems to be a lot wr

Thanks for the correction, my bad. The technical term for the kind of thing I was thinking of is 'multiscale composites', and there already seems to be a lot written about carbon fiber/carbon nanotube mixed composites which would presumably be similar to carbon fiber/nano-cellulose composites. I obviously can't claim to be an expert, but there at least seems to be some precedent.