Download or read book Synthesis and Characterization of Hydrogen Bonded Side Chain Liquid Crystalline Polymers written by Esra Erbil and published by . This book was released on 2011 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Synthesis and Characterization of Hydrogen bonded Main chain Liquid Crystalline Polymers written by Shampa Roychowdhury and published by . This book was released on 1996 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Synthesis and Characterization of Hydrogen bonded Main chain Liquid Crystalline Polymers written by Xiaobin Wang and published by . This book was released on 1995 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Hydrogen bonded Side Chain Liquid Crystalline Block Copolymer written by Chi-Yang Chao and published by . This book was released on 2003 with total page 444 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Synthesis and Characterization of Noncentrosymmetric Hydrogen Bonded Liquid Crystalline Polymers written by Jeremy R. Wolf and published by . This book was released on 2005 with total page 444 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Synthesis and Characterization of Methacrylate Based Hydrogen Bonded Liquid Crystalline Polymers written by Ceren Aytaç and published by . This book was released on 2011 with total page 51 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Design Synthesis and Characterization of Side Chain Liquid Crystal Segmented Polyurethanes written by Bindu R. Nair and published by . This book was released on 2000 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Synthesis Characterization and Rheology of Functional and Heterocyclic Liquid Crystalline Polymers written by Wenyi Huang and published by . This book was released on 2006 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt: Three segmented main-chain thermotropic liquid crystalline polymers (TLCPs) functionalized with nitrogen-containing heterocyclic groups were synthesized; namely PyHQ12 having pendent pyridyl group, PABP having side-chain azopyridyl group with flexible spacer, and PTBP containing side-chain terpyridine group with flexible spacer. The principles of specific interactions were applied to prepare supramolecular structures and organoclay or clay nanocomposites based on these functional TLCPs. Three combined main-chain/side-chain liquid-crystalline polymers (MCSCLCPs) were prepared via hydrogen bonding or ionic interactions based on PyHQ12 and PABP. The presence of hydrogen bonds in self-assembled PyHQ12-7CNCOOH and PABP-AA, and the presence of ionic interactions in self-assembled PABP-TSA, which exist above their respective clearing temperatures, were confirmed using Fourier transform infrared (FTIR) spectroscopy, the thermal transitions in each MCSCLCP were determined using differential scanning calorimetry (DSC), and the mesophase structures of each self-assembled MCSCLCP were characterized using polarized optical microscopy (POM) and wide-angle X-ray diffraction (WAXD). PyHQ12 was observed to be very effective in exfoliating organoclay (Cloisite 30B) aggregates, because of the formation of hydrogen bonds, as determined by in situ FTIR spectroscopy, between the pendent pyridyl group in PyHQ12 and the hydroxyl groups in the surfactant MT2EtOH residing at the surface of Cloisite 30B. Thus, functionality in TLCP is necessary to obtain highly dispersed organoclay nanocomposites, but at the same time there is a possibility to lose some degree of liquid crystallinity in the TLCP, due to the proximity of the pendent pyridyl group to the mesogenic main-chain backbone. Thus, another functional TLCP, PABP having side-chain azopyridyl group with flexible spacer, was synthesized. It has been found that the liquid crystallinity of PABP in the organoclay nanocomposites was more or less intact and yet organoclay (Cloisite 30B) aggregates were very well dispersed, which was attributed to the fact that the pyridyl group in the side-chain azopyridine of PABP is located sufficiently far away from the mesogenic main chain. The rheological properties of functional TLCP/organoclay nanocomposites were also investigated. A unique polymer/ruthenium complex [RuII(PTBP)(6TPy)](PF6)2 based on PTBP was used to prepare natural clay (Montmorillonite, MMT) nanocomposite. X-ray diffraction and transmission electron microscopy indicate that MMT has a high degree of exfoliation in the matrix of PTBP/ruthenium complex. UV-vis spectroscopy and FTIR spectroscopy show that the driving force for exfoliating MMT in PTBP/ruthenium complex is attributable to the Coulombic interactions between the positively charged ruthenium center in the side chain of the polymer and the negatively charged clay surfaces.

Download or read book Design and Synthesis of Liquid Crystalline Polymer Brushes and Hydrogen Bonded Polymers written by Emma L. Conlin and published by . This book was released on 2005 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt: Our research is aimed at developing macromolecules that will lead to improved polar order in materials and new types of sensors. Our approach to developing noncentrosymmetric materials is to use hydrogen bonded liquid crystalline monomers. We report the synthesis and characterization of three molecules. Next, we investigate the presence of hydrogen bonding and the phase transitions of these molecules. We also incorporate these polymers into a liquid crystalline host. We also aim to develop polymers that may lead to the development of new sensors. Two monomers are chosen, synthesized and characterized. Solution polymerizations are performed; next, an initiator is synthesized and placed on a quartz substrate as a precursor to a liquid crystalline polymer brush. Initial attempts at brush synthesis were unsuccessful.

Download or read book Synthesis and Characterization of Two Azo containing Side Chain Liquid Crystal Polymers written by Stephan Marc Freiberg and published by . This book was released on 1998 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Synthesis and Characterization of Side Chain Liquid Crystalline Polymer written by Saravanan Nanda Kumar and published by . This book was released on 2007 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Synthesis and Characterization of a New Series of Side chain Cholesteric Liquid crystalline Polymers written by Sandi Campbell and published by . This book was released on 1996 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Synthesis and Characterization of Two Azo containing Side Chain Liquid Crystal Polymers written by and published by . This book was released on 1998 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Synthesis and Characterization of Side chain Liquid Crystalline Polymers Containing Mesogenic Units which Exhibit Constitutional Or Conformational Isomerism written by Chain-Shu Hsu and published by . This book was released on 1987 with total page 446 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Hydrogen Bonded Polymers written by Wolfgang Binder and published by Springer Science & Business Media. This book was released on 2007-03-16 with total page 215 pages. Available in PDF, EPUB and Kindle. Book excerpt: Control of polymeric structure is among the most important endeavours of modern macromolecular science. In particular, tailoring the positioning and strength of intermolecular forces within macromolecules by synthetic methods and thus gaining structural control over the final polymeric materials has become feasible, resulting in the field of supramolecular polymer science. Besides other intermolecular forces, hydrogen bonds are unique intermolecular forces enabling the tuning of material properties via self-assembly processes over a wide range of interactions strength ranging from several kJmol to several tens of kJmol . Central for the formation of these structures are precursor molecules of small molecular weight (usually lower than 10 000), which can assemble in solid or solution to aggregates of defined geometry.

Download or read book Synthesis and Characterization New Polymerizable Liquid Crystal Monomer and Its Atom Transfer Radical Polymerization for Novel Side Chain Liquid Crystalline Polymers written by Md. Rezaul Karim Sheikh and published by . This book was released on 2008 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Synthesis and Characterization of New Systems of Side chain Liquid Crystalline Polymers and Orientation Studies microform written by Guoxiong Yuan and published by National Library of Canada = Bibliothèque nationale du Canada. This book was released on 1997 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt: