Custom Compounders Since 1973

TPGOA Technical Insights

Things to Know About GMS

GMS (Glycerol Monostearate) is commonly used in Polypropylene as an antistatic agent.

The GMS is incompatible with polypropylene due to a net negative charge. Polypropylene, of course, has a net charge of zero.

The GMS hydrogen bonds with atmospheric moisture which allows the dissipation of low electrical voltages under 1000 volts.

Typically, antistatic products have a surface resistivity when measured pursuant to ASTM D257 of 10**9 to 10**11 ohms/square.

GMS melts at 58 degrees C and decomposes at temperatures in excess of 200 degrees C (392 F).

So, the polypropylene compound will need to be processed below 390 degrees F, in order to prevent decomposition of the GMS into carbon dioxide and carbon monoxide.

TPG makes every effort to insure that the information contained herein is accurate - however, we accept no liability for the content of this piece, or for the consequences of any actions taken on the basis of the information provided.
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