Traditional protective clothing only protects against alpha radiation.
This sentence is factually wrong. Normal everyday clothing can shield out beta radiation. It's safe to put a beta radiation source in your pants pocket.
The problem that I have with this article is that it doesn't offer any kind of comparison of the shielding ability of this material versus lead, concrete, or steel. (That is, 1 inch of this new material has the equivalent shielding ability of ? inches of lead.)
This article has the same look and feel of the articles that surface on FR from time to time talking about motors that are 500% efficient, new hydrogen powered engines that can propel your car 5000 miles on a gallon of fuel, and therapy magnets that can cure cancer.