Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 10 of 10 for “"Liquid Crystal Polymers"”.
-
Space-variant optical phase retarders in liquid crystal polymers and their applications
… of space-variant retarders made out of liquid crystal polymers recorded by polarization holography. The liquid crystals define the fast axis orientation of the retarder. Polarization holography is based on the superimposition of differently polarized beams to achieve the electric field …
-
Morphology and crystal structure of random, main chain, semi-flexible, thermotropic liquid crystal polymers
"The crystal structure and morphology of random, main chain, thermotropic liquid crystal polymers (LCP's) of equimolar amounts of the following structural units (with n equal to 4, 5, 6 and 7 in ""A"") have been examined by electron microscopy and diffraction:(DIAGRAM, TABLE OR GRAPHIC …
-
Novel interphases: Synthesis, molecular orientation and grafting of liquid crystal polymers on carbon fibers
… has been to study composite materials containing liquid crystal polymers either as matrices or in interfacial boundary zones. The fundamental point of interest here is the interfacial response that fiber surfaces can potentially induce in self ordering polymers. This investigation includes studies …
-
Defects in liquid crystal polymers : their origins and behavior in magnetic and flow fields
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 1997.
-
The investigation of novel charge transfer systems.
… having a structure based on that of side chain liquid crystal polymers, in that the hoped for polymer was composed of charge transfer acceptors connected to a polymer backbone via a flexible alkyl spacer linkage. As part of this work new charge transfer complexes were prepared some of which have …
-
Photo-responsive liquid crystal block copolymers/
Photo-responsive liquid crystal polymers (LCP) which contain azobenzene moieties have gained interest for their ability to change properties by merely irradiating them with the correct wavelength of light in the appropriate temperature range. Furthermore, they have been crosslinked for elasticity …
-
The rheology of liquid crystal polymer blends.
… and explanation of the interaction between liquid crystal and isotropic polymers. An investigation of the rheological behaviour has been carried out on blends containing small additions of a main chain thermotropic liquid crystal polymers using capillary rheometry. Samples of these blends …
-
Phase Transitions and the Effect of External Fields in Thermotropic Main Chain Liquid Crystal Systems
… the unique behavior of thermotropic main chain liquid crystal polymers with regard to phase transitions and their response to surfaces and external fields. Three different aromatic polymers were utilized in this study, including two constitutional isomers with periodic and aperiodic chemical …
-
The processing of microcomposites based on polypropylene and two thermotropic liquid crystalline polymers in injection molding, sheet extrusion, and extrusion blow molding
… pregenerated microfibrils of thermotropic liquid crystal polymers (TLCPs), referred to as microcomposites. The processing methods used are injection molding, sheet extrusion, and extrusion blow molding. The TLCPs used are HX6000 and Vectra A950. The microcomposites are produced by drawing …
-
Additive Manufacturing of Functional Materials for Biomedical Devices
… is used to enhance the functionality of polymers for the improvement of medical devices, including bespoke ankle braces, impact resistance protective paddings, and biomedical surfaces for the regulation of cell growth. Anisotropic, self-assembling, and self-reinforcement hierarchical …