Characterization of the Clarity of Blends of an EVA Copolymer with Several Tackifier Resins Using Thermal Analysis Techniques, 1995 Hot Melt Symposium Proceedings

Alex M. Henderson Ph.D., MBA

AT Plastics Inc.

Phillip Choi

Alfred Rudin Ph.D., P.Eng.

University of Waterloo

Differential Scanning Calorimetry (DSC) provided insight into the causes of differences in the clarity of EVA/Tackifier blends. Blends which exhibited better clarity showed a greater depression in polymer crystallization temperature (Tc ) with increasing rate of cooling. Good clarity blends showed AT, values 0.5- 1.5°C greater than poor clarity blends as cooling rates increased from 2°C/min to 20°C/min.

Better clarity was attributed to better supersaturation of the polymer crystallites in the tackifier which delayed crystallite formation until it occurred precipitously...

Author: Henderson, A.M., Choi, P., Rudin, A.
Characterization of the Clarity of Blends of an EVA Copolyme
Characterization of the Clarity of Blends of an EVA Copolymer with Several Tackifier Resins Using Thermal Analysis Techniques, 1995 Hot Melt Symposium Proceedings
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