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Synthesis of Novel High-Performance Polymers via Pd-Catalyzed Amination of Dibromoarenes with Primary Aromatic Diamines.
A series of novel polymers have been obtained by the condensation polymerization of different dibromoarenes with different primary aromatic diamines via palladium-catalyzed aryl amination reaction. The structures of polymers are characterized by means of FT-IR, H NMR spectroscopy, and elemental analysis; the results show an agreement with the proposed structure. DSC and TG measurements show that...
http://www.polymer.cnt//ss/changguanjun/publicationsshow_1722.html |
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Nucleation Effect of Thermotropic Liquid Crystalline Polymer on the Crystallization of Polycaprolactone. Polymers & Polymer Composites, 2010, 18(1), to appear.
Polymers & Polymer Composites, 2010, 18(2), 91-101.
ABSTRACT:
Polycaprolactone (PCL) has attracted much attention in recent years due to its good biodegradability and biocompatibility. As a semicrystalline polymer, the final properties of PCL materials highly depend on the bulk crystallization level. However, PCL shows lower crystallization temperature and rate than other alipha...
http://www.polymer.cnt//ss/wudefeng/publicationsshow_1719.html |
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Interfacial entanglement between glassy polymers investigated by nanofractography with high-resolution scanning electron microscopy.
Fracture surfaces created during the interfacial failure of weak interfaces between glassy polymers were investigated with high-resolution scanning electron microscopy (HR-SEM). As reported in an earlier communication (Macromol. Rapid Commun. 2007, 28, 915-921), we found that interfacial failures between immiscible polymers produced large number of nanosized fibrils on the fracture surfaces. In or...
http://www.polymer.cnt//ss/ygliao/publicationsshow_1480.html |
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High strength disclinations in liquid crystalline polymers with X-shaped two-dimensional mesogenic units
Textures of liquid crystalline polymers with two-dimensional mesogens have been investigated by using polarizing optical microscopy.Disclinations, strength lSl up to 3/2 and 5/2, were found easily in each sample. Occasionally, even high strength disclination pair can befound. These high strength disclinations are very sable in high temperature although they are energy unfavorable according to the ...
http://www.polymer.cnt//ss/lilei/publicationsshow_1465.html |
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Synthesis and Characterization of Liquid Crystal Polymers with T-Shaped Two-Dimensional Mesogenic Units(II)
A series of liquid crystal polymers(LCPs) with X-shaped two -dimensional mesogenic units has synthesized via low temperature solution polycondensation.The liquid crystalline behaviors of the polymers were characterized using differential scanning calorimetry,polarized microscopy and X-ray diffraction.It was found that all the polymers show nematic thermotropic liquid crystalline characteristics,an...
http://www.polymer.cnt//ss/lilei/publicationsshow_1457.html |
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Synthesis and Characterization of a Series of Liquid Crystal Polymers with X-shaped Two-dimensional Mesogenic Units
A series of liquid crystal polymers (LCPs) with X-shaped two-dimensional mesogenic units has synthesized via low temperature solution polycondensation. The liquid crystalline behaviors of the polymers were characterized using differential scanning calorimetry, polarized microscopy and X-ray diffraction. It was found that all the polymers show nematic thermotropic liquid crystalline characteristics...
http://www.polymer.cnt//ss/lilei/publicationsshow_1456.html |
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Effect of Epoxy on the Mechanical Properties and Melt Viscoelastic Behavior of PBT-Clay Nanocomposites. Polymers & Polymer Composites, 2005, 13(6), 571-580.
Polymers & Polymer Composites, 2005, 13(6), 571-580.
ABSTRACT: Poly(butylene terephthalate)/epoxy/montmorillonite ternary nanocomposites (PCNs) were prepared by melt intercalation. Their morphologies were investigated using XRD and TEM. The results reveal that with epoxy resin as a compatibilizer, the clay is easily intercalated and disperses well in the matrix. Therefore, the PCNs exhibited ...
http://www.polymer.cnt//ss/wudefeng/publicationsshow_1420.html |
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Morphology, Crystalline Structure and Isothermal Crystallization Kinetics of PBT/Montmorillonite Nanocomposites. Polymers & Polymer Composites, 2005, 13(1), 61-69.
Polymers & Polymer Composites, 2005, 13(1), 61-69.
ABSTRACT: The melt intercalation method was employed to prepare poly(butylene terephthalate)/montmorillonite nanocomposites, and their microstructure was characterized by wide angle X-ray diffraction and transmission electron microscopy. The XRD results showed that the crystalline planes such as (010), (111), (100) were smaller than those of ...
http://www.polymer.cnt//ss/wudefeng/publicationsshow_1417.html |
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Chitosan-induced synthesis of magnetite nanoparticles via iron ions assembly, Polymers for Advanced Technologies, 2008, 19:1256 – 1261
magnetite
http://www.polymer.cnt//ss/libq/publicationsshow_1393.html |
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Science and Engineering of Short Fibre Reinforced Polymers, Woodhead Pub. Co. Ltd., Cambridge, UK, May 2009
http://www.polymer.cnt//ss/fushaoyun/publicationsshow_1126.html |
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