Julie Bove wrote:

What I really wanted to know was if the Splenda would act as a preservative,
like sugar does. So far, I've been unable to find that answer. As for your
frozen juice bars, the sugar was probably added to help them freeze better.

It's right on the Splenda site:

• Canning jams, jellies and fruits:
SPLENDA® Granular does not provide preservative properties. It is heat
stable and can be used as a sweetener in canning. Please consult a
canning book for instructions on sugarless canning.


Jennifer