[PDF] Top 20 Thermotropic liquid crystalline poly(amide-imide)s: Preperation and characterization

... pyridine (7.5mL) and metal salt LiCl (0.7g, 4wt%) were. added into a dry lOOmL flask and polymerized by the pro[r] ... See full document

... crystals form mesophases only upon super cooling the isotropic liquid phase below the melting temperature. By far a number of[r] ... See full document

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... liquid crystals exhibit mesomorphlsm In solution while thermotropic liquid crystallinity is observed in the neat state upon heating.. In the past 25 years, liquid crystals have found wid[r] ... See full document

... temperature. Thermotropic liquid crystalline copolyesters synthesised in the present study showed nematic ...in liquid crystalline temperature and reduction in the clearing, melting ... See full document

... a thermotropic liquid crystalline polymer and an amorphous polystyrene have been ...smectic liquid crystalline phase for the block ...and liquid crystalline properties ... See full document

... cholesteric thermotropic liquid crystalline polymers are prepared form chiral dia- cid or diol ...cholesteric thermotropic liquid crystalline ...cholesteric liquid ... See full document

... low molecular weight liquid crystalline compounds, polymers with mesogenic groups in the. main chain are slow to rearrange in external electromagnetic fields and may not be useful in[r] ... See full document

... The SEM micrographs of the copolyesters, fibers resulted from the blend solutions of polymer and PVC, polymer PVC are shown here. The SEM images of the fibers before and after irradiation to UV light illustrates the ... See full document

... LC polymers of this type, with the mesogenic groups in the backbone are called main chain liquid crystalline polymers, and.. are sub-divided into rigid-rods and semi-flexible LCPs as.[r] ... See full document

... The thermotropic liquid crystalline poly(ester-amides) (TLCPs) incorporating flexible methylene groups, aromatic groups, and arylidene-keto moiety were ...imparted thermotropic ... See full document

... focussed to improve the polymer solubility, thermal sta- bility and liquid crystalline properties [4-8]. Inclusion of phenylthiourea groups into polymer backbone has gained great importance for its ... See full document

... Novel poly (amide-imide)s were prepared using polycondensation reaction of an amino terminated oligoimide with various aliphatic diesters. The resultants PAIs were characterized for ... See full document

... This Thesis is brought to you for free and open access by the Thesis/Dissertation Collections at RIT Scholar Works. It has been accepted for inclusion in Theses by an authorized administrator of RIT Scholar Works. For ... See full document

... from amide-imides groups and obtained results indicate that they have high heat resistance (above 300 º ...obtained poly(amide-imide)s derivatives have active light reactions and ... See full document

... This Thesis is brought to you for free and open access by the Thesis/Dissertation Collections at RIT Scholar Works. It has been accepted for inclusion in Theses by an authorized administrator of RIT Scholar Works. For ... See full document

... The liquid-crystalline phases of 1c and 2, which were used for preparing the side-chain polysiloxanes I and II, were characterized by ...containing thermotropic liquid crystals we previously ... See full document

... Abstract: Liquid-crystalline polyacrylamides with mesogenic side-chains were synthesized by the radical polymerization of a mesogenic acrylamide ...The liquid-crystalline polyacrylamides ... See full document

... This Thesis is brought to you for free and open access by the Thesis/Dissertation Collections at RIT Scholar Works. It has been accepted for inclusion in Theses by an authorized administrator of RIT Scholar Works. For ... See full document

... simple polyesters were synthesized but in the late 1970s and early 1980s aromatic polyesters with liquid crystalline behavior were also synthesized. Although the heat resistance and chemical stability of ... See full document