Premier ESR Pinpointing Polypropylene Glass Transition Temperatures
Pinpointing Polypropylene Glass Transition Temperatures Using Sub-Zero Rheology
Learn how a sub-zero rheology approach can deliver more precise measurements than traditional DSC and faster readings than DMA in minutes.
Why You Need a More Accurate Way to Measure Polypropylene Tg
Polypropylene’s versatility stems from its low cost and ease of processing. But its real-world performance at sub-ambient temperatures hinges on the glass-transition temperature (Tg), a property that varies subtly between grades. Traditional Tg measurements with DSC or DMA can be slower, less accurate in the case of DSC, and impractical for routine QC.
In this paper, we show how a totally encapsulated sub-zero rheometer reduces slippage and variances, delivering highly repeatable, rapid measurements free from human error. Its precision and production-friendly workflow gives engineers the data they need to choose the best resin for every application.
Rapid, High-Precision Tg Profiling of Polypropylene
Unlock the full potential of your PP formulations with a next-generation sub-zero rheometry workflow that delivers Tg insights in minutes vs. hours or days, so you can make confident material choices faster.
Test Faster
Replace slow, multi-step DSC or DMA routines with a single test. Our sub-zero rheometer protocol slashes test time, keeping your R&D and QC teams focused on innovation instead of backlogs.
Precision Without Cryogenics
Gain the sensitivity you need to distinguish Tg shifts as small as 0.5 °C without liquid nitrogen.
3-in-1 Profiling
Capture rheological Tg and Tm, and mechanical damping data - replacing separate rheometer, DSC, and DMA runs - with a single sub-zero test on pellets that require no sample preparation.
About the Premier ESR with Sub Zero™ Technology
Our encapsulated, sub-zero rheometer applies oscillatory shear to polypropylene samples at temperatures below freezing, delivering precise Tg measurements in minutes. It can replace time-consuming DSC and DMA routines.
- Oscillatory shear testing down to sub-ambient temperatures without liquid nitrogen
- Detects grade-to-grade Tg shifts with 0.5 °C sensitivity
- Automated, production-ready workflow for R&D and QC
Download the white paper for full validation data and comparative performance insights.
About the Study
Alpha Technologies’ Unal Yilmazoglu, Senior Scientist – Global Application Team Leader, and Richard Hanzlik, Market Development Manager, developed this study to find a definitive answer to the question of measuring Tg accurately and more efficiently in various polypropylene grades.
For full study results, data, charts, and further explanation, download the white paper.
Applications Engineer
Product Manager
The study was conducted using the Premier ESR® rheology testing instrument from Alpha Technologies, which is in compliance with ASTM standards (ASTM D7750).
Download the Polypropylene Glass-Transition White Paper
Discover how Alpha Technologies has been able to harness sub-zero rheometry to deliver rapid, highly sensitive Tg measurements, streamlining QC and RD workflows.