Satin is widely used in dog clothes to help reduce matting. Actually, satin describes the type of weave, not the fabric itself. There is acetate satin, polyester satin, and of course the most elegant of all -- silk satin.
Here is a brief description of satin copied from
http://www.textilefabric.com Satin, because of its construction and fiber content, is one of the most luxurious fabrics manufactured. Satin is most often made from low twist, filament yarns. It is usually constructed by floating the warp or lengthwise yarns over four filling or horizontal yarns. The long floats give the fabric luster. Silk is the premiere choice of fiber content for bridal satin fabrics. However, silk satins are more expensive than satins containing acetate or polyester. Satin is found in apparel, lingerie, draperies, drapery lining fabrics and upholstery fabrics.
I think it is a matter of personal choice. I prefer to use natural fiber fabrics when possible. I prefer Dupioni Silk because it is extremely strong, durable and it's hard to beat the elegance of Dupioni.
If you have some satin that you want to use, GO FOR IT and then please post pics of your creations!!!!!