I am trying to activate HA with PEI at high temperatures but PEI will decompose at 180°C, it there any kind of reticulation method or ... to increase the thermal stability of PEI?
Dear Abdelmalek,
this question is from the series: "how can I change the number pi". Unfortunately, some things in nature can never be changed in any way, and the low thermal stability of polymers is one of these things.
There are several methodologies to improve the thermal stability of thermoplastics including processing in inert environments to prevent oxidative chain scission reactions, increasing the molecular weight to reduce chain mobility, and incorporation of blends. Unfortunately, most polymers will have degraded substantially by 600 C, and in the case of PEI there are methyl linkages along the chain that will decouple, irrespective of the modifications applied, around 200 C.
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