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Liquid crystal self-assembly of halloysite nanotubes in ionic liquids: a novel soft nanocomposite ionogel electrolyte with high anisotropic ionic conductivity and thermal stability
We report a novel class of liquid crystalline (LC) nanohybrid ionogels fabricated via self-assembly of natural halloysite nanotubes (HNTs) in ionic liquids (ILs). The obtained ionogels are very stable and nonvolatile and show LC phases over a wide temperature range. Remarkably, the nanocomposite ionogels exhibit high anisotropic ionic conductivity after shear, and their room temperature ...
http://www.polymer.cn//ss/hongzansong/publicationsshow_8766.html |
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(JPS Part A) Side-On Main-Chain Liquid Crystalline Polymers Prepared by Acyclic Diene Metathesis Polymerization and Thiol-Ene Click Step-Growth Polymerization
In this manuscript, we design and synthesize a
series of X-shaped mesogenic monomers, bearing two terminal-alkene tails.
Starting from these X-shaped monomers, acyclic
diene metathesis polymerization and thiol-ene polyaddition are applied for the first time to prepare two series
of side-on main-chain liquid crystalline polymers respectively.
http://www.polymer.cn//ss/yangh/publicationsshow_8430.html |
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(Macromol. Rapid Commun.) A Main-Chain de Vries Smectic Liquid Crystal Polymer Prepared by Hoveyda-Grubbs Catalyst-Initiated Acyclic Diene Metathesis Polymerization
A main-chain liquid crystalline polymer has been obtained by applying a Hoveyda–Grubbs
2nd generation catalyst in acyclic diene metathesis polymerization (ADMET) of a monomer containing on one end a terminal dimethylvinylsilyl group and at the other end a terminal C-C double bond.
http://www.polymer.cn//ss/yangh/publicationsshow_8420.html |
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Mechanical Properties and Fracture Behaviors of Epoxy Composites With Phase-Separation Formed Liquid Rubber and Preformed Powdered Rubber Nanoparticles: A Comparative Study
Epoxy composites filled with phase-separation formed
submicron liquid rubber (LR) and preformed nanoscale
powdered rubber (PR) particles were prepared at differ-
ent filler loading levels. The effect of filler loading and
type on the rheological properties of liquid epoxy resin
suspensions and the thermal and mechanical properties
of the cured composites as well as the relative fract...
http://www.polymer.cn//ss/tanglongcheng/publicationsshow_8305.html |
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Room temperature spontaneous exfoliation of organo-clay in liquid polybutadiene: Effect of polymer end-groups and the alkyl tail number of organic modifier
Disorderly exfoliated telechelic liquid polybutadiene/organo-clay nanocomposite gel was, for the first time, successfully prepared at room temperature of 26 C by simply compounding of carboxyl-terminated polybutadiene (CTPB) with organo-clay containing surfactant modifier with two alkyl tails. The dispersion behavior of organo-clay in liquid polybutadiene/organo-clay nanocomposite gels were syste...
http://www.polymer.cn//ss/sunpingchuan/publicationsshow_5155.html |
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Unusual rheological behavior of liquid polybutadiene rubber/clay nanocomposite gels: The role of polymer-clay interaction, clay exfoliation, and clay orientation and disorientation
The rheological properties of liquid polybutadiene rubber/organo-clay nanocomposite gels were investigated by rheological experiments, focusing on the effects of clay exfoliation and orientation-disorientation as well as polymer-clay interaction and temperature. Both irreversible and reversible viscosity transitions were observed in the temperature range from 26 to 136 °C in steady shear experime...
http://www.polymer.cn//ss/sunpingchuan/publicationsshow_5149.html |
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52. Roles of Composition Heterogeneity on Ordering of a Liquid Crystalline Copolyester: Nematic/Nematic Biphase and Nonequilibrium Pattern Formed by Seeded Growth of LC Domains
Roles of composition heterogeneity on pattern formation via phase separation and ordering of a main-chain type liquid crystalline (LC) copolyester have been investigated in a wide range of temperature. For this purpose, as-cast films of the neat LC copolyester having optically homogeneous and isotropic property, as a trapped nonequilibrium initial state, were first prepared by solvent casting...
http://www.polymer.cn//ss/wangwei/publicationsshow_3083.html |
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36. Topographical structure of solid films of poly[5,7-dodecadiyne-1,12-diol bis(4-butoxy carbonyl methyl urethane)] self-assembled from its lyotropic liquid crystal phase
The topographical structures of film samples of a soluble polydiacetylenepoly[5,7-dodecadiyne-1,12-diolbis(4-butoxycarbonylmethylurethane)]solidified from its lyotropic liquid crystal phase were characterized by means of scanning electron microscopy and atomic force microscopy. The observations reveal a structural feature of extended-chain lamellae of the film samples and furthermore a three-d...
http://www.polymer.cn//ss/wangwei/publicationsshow_3064.html |
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26. Phase separation processes and self-organization of textures in the biphase region of thermotropic liquid crystalline poly(4,4’-dioxy-2,2’-dimethlazoxybenzene-dodecanedioyl): 2. A study on the thermal conditions
The isothermal phase-separation process and the self-organization of textures in the biphase region of a thermotropic liquid crystalline polyester were investigated in situ by using polarizing light microscopy. When the test temperature was rapidly raised from room temperature to the temperature corresponding to the biphase region (T-jump) or rapidly lowered from a temperature corresponding t...
http://www.polymer.cn//ss/wangwei/publicationsshow_3052.html |
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21. Relationship between Frank elastic-constant anisotropies measured from lamellar and of molecular directors of disclinations in main-chain liquid crystalline polymers
The transmission electron microscope technique enables direct visualization of disclination core structure of main chain liquid crystalline polymers. Generally, the lamellar structure, that is a function of type of polymer and molecular length, and of which the thickness is 10-200 nm, can be observed. In terms of distortions in the director field produced by a disclination, the elastic anisot...
http://www.polymer.cn//ss/wangwei/publicationsshow_3047.html |
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