Polymerizable compositions made with polymerization initiator systems based on organoborane amine complexes

An article comprising a first substrate, a low surface energy polymeric substrate, and an adhesive that bonds the first substrate to the low surface energy polymeric substrate without flame treatment corona diischarge treatment, plasma treatment, oxidation by ozone, oxidation by oxidizing acids, sputter etching, priming with a primer other than organoborane amine complex or a combination thereof, of the first substrate or the low surface energy polymeric substrate;

• wherein the adhesive, prior to bonding, contained an organoborane amine complex;
• wherein an adhesively bonded sample of the article undergoes adhesional failure, substrate failure of at least one of the first substrate or the low surface energy polymeric substrate or a combination of substrate failure and failure within the adhesive bond when the sample is tested to failure in an overlap shear strength test that is conducted using a tensile testing apparatus operating at a crosshead speed of 20 mm/minute;
• wherein the sample of the bonded article prepared for the overlap shear strength test comprises:
• a coupon of the first substrate, the coupon having the dimensions of 60 mm×20 mm×2 mm;
• a coupon of the low surface energy polymeric substrate, the coupon having the dimensions of 60 mm×20 mm×2 mm;
• and an approximately 0.1 to 0.3 mm thick layer of the adhesive composition;
• the two coupons in the sample having been bonded so as to provide a 200 mm2 overlap area.