A rouer table (if you can afford one or have access to one) with triple blade bit will make fantastic cuts (perpendicular flat edges always, and they are ready to glue when finished) and save you a lot of time doing acrylic projects, but using a table saw is almost asking for it, even with a top-end blade. As the Acrylic material gets hot and starts sticking/melting to the blade, it begins to grab your work, making the work piece difficult to maintain in a proper position, and many times taking the work piece and slinging it...
Check American Plastics web ste for some good work tips and suggestions.
Ask me how I know...
