You want a really thin carbide-tipped blade to get a smooth cut with no
melted flash. The Matsu****a 7¼" combination blade is perfect for this.

In Boatbuilder, May/June 98, Thomas Firth Jones said about cutting
acrylic sheet “Myself , I’ve fallen in love with the 7¼”
Matsu****a blade...It doesn’t have that many teeth but whatever you put
through it comes out looking as if it had been planed and its 1/16” kerf
makes light work of ripping heavy teak as well as plastic. It’s my best
new tool in years.” They are available from various sources, but I also
sell them.

Dave Carnell