In this paper, we show that a noncrystalline but ordered smectic-like phase exists above the bulk-melting temperature (T-m) at poly(n-alkyl acrylates)-air interface. The surface ordered phase is one monolayer thick and undergoes a sharp transition from order to disorder 10degreesC above T-m for n=22. The presence of a surface phase that does not exist in the bulk has important implications in the design of thermally responsive adhesives.
Physical Review Letters
Copyright 2003 American Physical Society. Available on publisher's site at http://dx.doi.org/10.1103/PhysRevLett.90.215501.
Gautam, Keshav S.; Kumar, Satyendra; Wermeille, Didier; Robinson, Doug; Dhinojwala, Ali (2003). Observation of Novel Liquid-Crystalline Phase Above the Bulk-Melting Temperature. Physical Review Letters 90(21) doi: 10.1103/PhysRevLett.90.215501. Retrieved from https://oaks.kent.edu/phypubs/48