What sort of vine are you trying to grow? If it's the type that twines around things then the key is for the PVC pipes to not be too wide so that the vine can twine around them. If the pipes are too fat, then you'll have to help it out by tying it on or something until it gets tall enough to catch onto the trellis above. With vines like that I don't think texturing it is going to do much, and if your vines are the ones that stick to things I think they'd be able to stick to the PVC without any help so I'm not sure you need to do anything to the pipe.
Whatever vine you're trying to grow, if you feel the pipe needs some texture to help the vine cling, you can use a wire wheel in a drill. (assuming you don't have one on a bench grinder in your shop) The drill version is available at Home Depot, Lowe's or Ace hardware for less than 5 bucks.