Abstract
In this research we report a complex material formed between poly (methyl methacrylate) (PMMA) and urea. The disassociation temperatures of the PMMA/U complexes are higher than the glass transition temperature of neat PMMA and lower than the melting temperature of neat urea. As we reported previously, the as received-PMMA (asr-PMMA) contained a small amount of residual alkane-like surfactant. When forming the PMMA/U complexes with saturated urea-methanol solution, the originally contained contaminant can be encapsulated by urea in the form of a crystalline inclusion compound (IC) and dispersed within the PMMA/U complex. Since urea has been reported to form ICs with various small molecules, this phenomenon provides a potential way for small molecule encapsulation by using PMMA as the substrate and urea as the encapsulant.
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