Learn how a sub-zero rheology approach delivers more precise Tg measurements than traditional DSC, and faster readings than DMA, in minutes.
Download the polypropylene glass-transition white paper.
Tg sensitivity between grades
instead of hours or days
sub-ambient testing without cryogenics
Polypropylene’s versatility comes from its low cost and ease of processing, but its real-world performance at sub-ambient temperatures depends on its glass transition temperature (Tg), which varies subtly between grades.
Traditional Tg measurements with DSC or DMA can be slow, less accurate in the case of DSC, and impractical for routine QC. A fully encapsulated sub-zero rheometer reduces slippage and variance, delivering highly repeatable, rapid measurements free from human error.
A next-generation sub-zero rheometry workflow helps you make confident material choices faster.
Replace slow, multi-step DSC or DMA routines with a single test, so R&D and QC teams can focus on innovation instead of backlogs.
Distinguish Tg shifts as small as 0.5 °C without liquid nitrogen.
Capture rheological Tg and Tm plus mechanical damping in one sub-zero test on pellets, with no sample preparation.
Our encapsulated sub-zero rheometer applies oscillatory shear to polypropylene samples below freezing, delivering precise Tg measurements in minutes and replacing time-consuming DSC and DMA routines.
Unal Yilmazoglu, Senior Scientist and Global Application Team Leader, and Richard Hanzlik, Market Development Manager, developed this study to find a definitive way to measure Tg accurately and efficiently across polypropylene grades. The study used the Premier ESR®, which complies with ASTM D7750.
Senior Scientist, Global Application Team Leader
Market Development Manager
See how Alpha Technologies uses sub-zero rheometry to deliver rapid, highly sensitive Tg measurements that streamline QC and R&D workflows.
