Abstract
There was increasing evidence that the properties of polymer in thin polymer films differ to their bulk properties. This was represented by the discovery of substantial thickness dependent changes in mobility. In the present study, crystal morphology occurring during in the crystallisation of polyethelene therethalate (PET) film has been investigated. It was found that the lamellar width was temperature and thickness dependence, and the structure having a diffusion-controlled nature grew in very thin regions (∼20 Å in height) and at a very low temperature (65 °C) prepared from heating process but was not observed in thin films prepared from quenching process.
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