Accession Number : AD1013230


Title :   Characterization of Nanostructured Polymer Films


Descriptive Note : Technical Report,01 Jun 2012,31 Aug 2014


Corporate Author : The Trustees of Princeton Univeristy Princeton United States


Personal Author(s) : Priestley,Rodney D ; Christie,Dane ; Shepard,Kimberly B ; Sosa,Chris ; Zhang,Chuan ; Jeong,Hyuncheol


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/1013230.pdf


Report Date : 23 Dec 2014


Pagination or Media Count : 12


Abstract : In 2011, we discovered that polymer films with exceptional thermal and kinetic stability could be formed by Matrix Assisted Pulsed Laser Evaporation (MAPLE) onto substrates held at low temperatures compared to the glass transition temperature (Tg) of the polymer. The unique and unprecedented combination of properties is due to the film morphology, i.e., the films are nanostructured. The aim of this proposal was to understand the mechanism of film formation and to characterize the nanoscale building blocks of the stable glasses. Recently, we characterized the transport, i.e., time-of-flight, and nanoscale thermal properties of amorphous polymer nanoglobules fabricated via Matrix-Assisted Pulsed Laser Deposition (MAPLE). We discovered that stability in nanostrutured glasses was due to the nanoscale stability of the materials' building blocks, i.e., nanoglobules.


Descriptors :   POLYMERS , films , glass , TRANSITION TEMPERATURE , thermal properties , morphology , PULSED LASERS , fabrication , surface properties , topology , low temperature , substrates , nanostructures , POLYMETHYL METHACRYLATE


Distribution Statement : APPROVED FOR PUBLIC RELEASE