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Phase Transition and Rheological Behaviors of Concentrated Cellulose/Ionic Liquid Solutions
The phase transition and rheological behaviors of concentrated solutions of microcrystalline cellulose (MCC) in an ionic liquid of 1-allyl-3-methylimidazolium chloride (AMIMCl) have been investigated. Polarized optical microscopy (POM) measurements indicate that the two critical cellulose concentrations for the appearance of biphase and fully anisotropic phase for MCC/AMIMCl solutions are 9 and 16...
http://www.polymer.cnt//ss/hongzansong/publicationsshow_6439.html |
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Stability of Hydrogen-bonded Hydroxypropylcellulose /Poly(acrylic acid) Microcapsules in Aqueous Solutions
Hydroxypropylcellulose (HPC), a cellulose derivative, and poly(acrylic acid) (PAA) were assembled onto colloidal SiO2 particles in acidic solutions in a layer-by-layer manner, using hydrogen bonding as the driving force. Monodisperse hollow microcapsules were prepared by the removal of the sacrificial template. Long-term stability of the hydrogen-bonded capsules under various conditions was ...
http://www.polymer.cnt//ss/zhangyongjun/publicationsshow_3275.html |
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Induced Circular Dichroism of Anionic Porphyrin TPPS Aggregates in DNA Solutions
Induced circular dichroism (CD) of achiral anionic tetrakis (4-sulfonatophenyl) porphine (TPPS) in polyanionic DNA solutions was investigated. Induced CD signals of the anionic TPPS aggregates in both cholesteric liquid crystal DNA solutions and isotropic DNA solutions are all observed within an appropriate pH range. When the pH value is less than 5, the induced CD signals of TPPS are split i...
http://www.polymer.cnt//ss/rgliu/publicationsshow_3134.html |
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75. A Conformation study of Polyelectrolyte-dendritic Surfactant Complexes in Dilute Solutions
Three dendronized polymers from generation one to generation three have been prepared by complexing negatively charged Frechet-type dendrons with a polyanion, poly(diallydimethylammonium chloride) (PDADMAC). The grafting degree has been confirmed mainly by elemental analysis. In dilute solutions of tetrahydrofuran, static light scattering studies indicate that the first generation complex has...
http://www.polymer.cnt//ss/wangwei/publicationsshow_3106.html |
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69. Salt-Induced Aggregation of Polyelectrolyte-Amphiphilic Dendron Complexes in THF Solutions
Complexes were prepared by complexing amphiphilic dendrons (first, second, and third generations) with an oppositely charged polyelectrolyte through ionic interaction. Their chemical structure can be confirmed by nuclear magnetic resonance spectroscopy (1H NMR), Fourier transform infrared spectroscopy (FT-IR), and elemental analysis (EA). All of the complexes were investigated with respect t...
http://www.polymer.cnt//ss/wangwei/publicationsshow_3100.html |
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Spatial inhomogeneities of polystrene gels prepared from semidilute solutions
The spatial inhomogeneity and the chain dynamics of polystyrene gels prepared by random cross-linking of functionalized polystyrene in semidilute toluene solution were investigated by static and dynamic light scattering. From polymer concentrations as low as 0.02 g/mL, continuous macroscopic gels were obtained, while at 0.01 g/mL, only microgels formed. In the concentration range 0.02-0.05 g/mL, t...
http://www.polymer.cnt//ss/rgliu/publicationsshow_2957.html |
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97. Phase transition and rheological behaviors of concentrated cellulose/ionic liquid solutions
暂无。
http://www.polymer.cnt//ss/zhigangwang/publicationsshow_2594.html |
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Effect of hydrophobic association on structure and rheological behavior of polyacrylamide aqueous solutions [J].
SUN Huan-zhang, ZHANG K. L. Zhang Qun-ling, CHEN Jing. ZENG Shen-wen, PING Zhen-hua, XU Yuan-ze. Effect of hydrophobic association on structure and rheological behavior of polyacrylamide aqueous solutions [J]. Acta Polymerica Sinica, 2006, 9(6): 810-814.
http://www.polymer.cnt//ss/xuyuanze/publicationsshow_2070.html |
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Multi-scale rheological perspective to polymer solutions and gels in EOR[J].
CAO Xu-long, LI Zheng-quan, ZHANG Qun-ling,WANG Gang, XU Yuan-ze. Multi-scale rheological perspective to polymer solutions and gels in EOR[J]. J Cent South Univ Technol, 2007, 14(suppl.): 232-237.
http://www.polymer.cnt//ss/xuyuanze/publicationsshow_2069.html |
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Electrospun ultra-fine silk fibroin fibers from aqueous solutions
By using electrospinning technique, beaded, cylinder shaped and ribbon like ultra-fine silk fibroin (SF) fibers were obtained from its concentrated aqueous solution under different processing conditions. These fibers had an average diameter of 700 nm and were characterized by scanning electron microscopy (SEM), Wide-angle X-ray diffraction (WAXD) and Raman spectroscopy. It was found that the...
http://www.polymer.cnt//ss/yaopengzhang/publicationsshow_1731.html |
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