Molen SP 179 94 as pellet and milled recycled material (powder) said to be of the same quality
Measuring cell: DSC20
Pan: Aluminum standard 40 µl, pierced lid
Sample preparation: Powder, or disk cut from pellet
DSC measurement: Heating from 30 to 250ºC at 10 K/min
Atmosphere: Air, 50 cm3 /min
The two samples show the same melting behavior. As far as DSC is concerned, the two samples of polypropylene are therefore identical with respect to crystallite size distribution, melting range, crystallinity and hardness.
TPP, New Versus Recycled Material | Thermal Analysis Handbook No.HB217 | Application published in METTLER TOLEDO TA Application Handbook Thermoplastics