Scotch blue painter s tape 50 mm

A variety of polymers was screened to investigate their window of feed-and printability. Thermoplastic polyurethanes (Tecoflex R EG-72D, Tecophilic R SP-60D-60 Tecophilic R SP-93A) (Lubrizol, Ohio, USA) and ethylene-vinyl-acetates (EVA1070, EVA2825A) (Celanese, UK) were processed as pellets. Polycaprolactone (CAPA 6506, Perstorp, UK), polyethylene-oxide (Polyox WSR N10, Dupont, Germany), polymethacrylates (Eudragit EPO, Evonik, Germany), hydroxy-propylcellulose (Klucel EF, Ashland, Switzerland), polyvinylcaprolactam-polyvinyl acetate-polyethylene glycol graft copolymer (Soluplus R ,BASF, Germany) and copovidone (Kollidon VA64 R , BASF, Germany) were processed as powder. From this list of polymers, the TPUs and CAPA6506 are at this moment not approved for pharmaceutical use in Europe. Black polylactic acid filament was purchased from 3D4Makers (Haarlem, Netherlands). Ibuprofen (SI group, USA) was added as active pharmaceutical ingredient (API) to Polyox WSR N10 (PEO N10) and polycaprolactone (PCL) in 20% (w/w) and 40% (w/w). Scotch blue painter's tape 50 mm was supplied by 3M (Bracknell, UK).

Theophylline (melting point 270 o C) (21) was purchased from Acros Organics.
Polyvinylpyrrolidone (PVP, MW 40,000) and dipyridamole (melting point 165 o C) (22) were purchased from Sigma-Aldrich (UK). Talc was ordered from Fluka Analytical (UK). Triethyl citrate was purchased from Sigma-Aldrich (Dorset,UK) and Scotch blue painter's tape 50 mm was supplied by 3M (Bracknell, UK).

Warfarin (sodium salt) was purchased from Arcos (UK). Eudragit E was donated from Evonik Industries (Darmstadt, Germany). Triethyl citrate (TEC) and tri-calcium phosphate (TCP) were supplied by Sigma-Aldrich (UK). Acetonitrile and methanol were supplied by British Drug Houses (BDH, London, UK). Scotch Blue Painter's tape 50 mm was supplied by 3M (Bracknell, UK).