Accession Number : AD1043642


Title :   Easily Processed Host-Guest Polymer Systems with High-Tg Characteristics (First-year Report)


Descriptive Note : Technical Report,01 Oct 2010,30 Sep 2011


Corporate Author : US Army Research Laboratory Aberdeen Proving Ground United States


Personal Author(s) : Orlicki, J A ; Hoffman,R ; Costanzo,P


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/1043642.pdf


Report Date : 01 May 2012


Pagination or Media Count : 24


Abstract : A series of polymethylmethacrylates (PMMAs) were prepared with varying quantities of Diels-Alder (DA) crosslinks. The DA linkages are broken at elevated temperatures and may re-form at lower temperatures, which allowed the thermally responsive PMMA (TR-PMMA) to be blended with PMMA and melt processed on a laboratory scale twin-screw extruder. The blends were easily processed at elevated temperatures, although the initial level of DA crosslinkers included in the TR-PMMA backbone were insufficient to regenerate crosslinks. Higher levels of DA crosslinked TR-PMMAs have been prepared, and are being explored for DA bond reformation and mechanical behavior. In addition, the preparation of host-guest systems incorporating chromophores has been demonstrated, which will allow the use of the TR-polymer concept for electro-optically active polymer applications.


Descriptors :   high temperature , low temperature , room temperature , TERAHERTZ RADIATION , continuous waves , electronics , battlefield , BIOLOGICAL AGENT DETECTORS , chemical agent detectors , explosives detection , chemical reactions


Subject Categories : Physical Chemistry


Distribution Statement : APPROVED FOR PUBLIC RELEASE