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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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74. Regenerated cellulose/multi-walled carbon nanotube (MWCNT) composite fibers with enhanced mechanical properties prepared with an ionic liquid 1-allyl-3-methylimidazolium chloride (AmimCl)
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http://www.polymer.cn//ss/zhigangwang/publicationsshow_2571.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 st...
http://www.polymer.cn//ss/wxlthefirst/publicationsshow_2085.html |
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Preparation and SO2 Sorption/Desorption Behavior of an Ionic Liquid Supported onto Porous Silica Particles. Ind. Eng. Chem. Res., 2009, 48 (4), 2142-2148
The ionic liquid 1,1,3,3-tetramethylguanidinium lactate (TMGL) was supported onto porous silica particles via a facile impregnation-vaporization method. The TMGL-supported particles gave high porosity and large specific surface area. The SO2 sorption/desorption properties of the silica-supported TMGL (TMGL-SiO2) were evaluated, and high SO2 sorption capacity and rate were achieved. Its capacity re...
http://www.polymer.cn//ss/wulinbo/publicationsshow_945.html |
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103. Synthesis and characterization of fluorene-based rod–coil liquid crystal polymers. G.Z.Yang, X.L.Chen*, L.M.Wang, J.G.Shi, C.Z.Li, T.X.Liu*. Polym. Adv. Technol., 20(2), 104-110, 2009.
A series of fluorene-based rod–coil liquid crystal polymers with different lengths of the coil segments on backbones were designed and synthesized by a palladium-catalyzed Suzuki coupling-reaction. The thermal stability, the UV–Vis absorption and fluorescence spectra in chloroform solution and thin film, the electrochemical properties, thermal behavior, and morphology of these rod&ndas...
http://www.polymer.cn//ss/liutianxi/publicationsshow_747.html |
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61. ATRP Synthesis of Oligofluorene-Based Liquid Crystalline Conjugated Block Copolymers. X.F.Yu,S.Lu, C.Ye,T.C.Li,T.X.Liu*,S.Y.Liu,Q.L.Fan,E.Q.Chen,W.Huang*. Macromolecules 39(4),1364-1375, 2006.
A series of well-defined conjugated-liquid crystalline (LC) block copolymers containing oligofluorene and side-chain liquid crystalline polymers with cyanobiphenyl moieties were successfully synthesized by atom transfer radical polymerization. The block copolymers were prepared with number-averaged molecular weights (Mn) ranging from 8000 to 16 000 and narrow molecular weight distribution less tha...
http://www.polymer.cn//ss/liutianxi/publicationsshow_430.html |
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