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A novel technology for preparation of high performance fiber by radio frequency heating CVD
In this paper,radio frequency(r.f.) heating CVD technology for preparation of high performance fiber has been introduced.Sic,B fiber have been produced by this technologe.
http://www.polymer.cnt//ss/luokun998/publicationsshow_2496.html |
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Study on Acrylic Emulsion Containing High Hydroxyl Content with core-shell Structure
Using butyl acrylate, styrene, hydroxylethyl methacrylate and acrylic acid as comonomers, emulsions containing high hydroxyl content and having core-shell structure were synthesized from semi-continuous seed emulsion polymerization methods. Emulsifier types and levels, reaction temperature, core composite, weight percent of core on stability of the emulsion polymerizations were investigated. It wa...
http://www.polymer.cnt//ss/zhangfaai/publicationsshow_2257.html |
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High strength disclinations in the nematic and smectic states of 2,5-bis(4-alkoxybenzoyloxy)-p-benzoquinones
High strength disclinations were observed in both nematic and smectic phases exhibited by members of the 2,5-bis(4-alkoxybenzoyloxy)-p-benzoquinone series, beyond 4-n-pentoxy. The shorter members of the series show only a nematic mesophase, the highest members only a smectic mesophase, while intermediate members exhibit both types of mesophase. These high strength disclinations seen in a single co...
http://www.polymer.cnt//ss/lilei/publicationsshow_1461.html |
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Synthesis and Characterization of High Molecular WeightAtactic Polybutene-1 with a Monotitanocene/Methylaluminoxane Catalyst System
A novel catalyst precursor, the monotitanocene (h5-pentamethylcyclopentadienyl)
titanium tricinnamyloxide [Cp*Ti(OCH2OCHACHC6H5)3], was synthesized
and employed for butene-1 polymerization in the presence of methylaluminoxane. The
effects of the polymerization conditions on the catalytic activity, molecular weight,
stereoregularity, and regioregularity of the polymer so obtained were investiga...
http://www.polymer.cnt//ss/huangqigu/publicationsshow_1093.html |
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On promoting intercalation and exfoliation of bentonite in high density polyethylene by grafting acrylic acid
Y. Xu, Z. Fang, L. Tong. J. Appl. Polym. Sci., 2005.6, 96(6): 2429~2434
http://www.polymer.cnt//ss/zpfang/publicationsshow_780.html |
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Metal-Free Route to Precise Synthesis of Poly(propylene oxide) and Its Blocks with High Activity
关键字:Metal-Free,propylene oxide,High Activity
The fast and living ring-opening polymerization (ROP) of propylene oxide (PO) by metal-free catalysis is reported. By using triethyl borane (TEB) and organic Lewis bases (LBs, e.g.: phosphazene base, amidine and guanidine) as the catalysts, various alkyl alcohols can effectively initiate the ROP of PO, yielding tailor-made poly(propylene oxide)s (PPOs) with high regioregularity, predictable mole...
http://www.polymer.cn/research/sy_info19589 |
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Self-assembly of liquid-crystalline physical gels under high magnetic field
关键字:liquid-crystal, physical gel, high magnetic field, orientation Liquid-crystalline physical gels, consisting of liquid crystals (LCs) and three-dimensional continuous nanoscale fiber networks formed by self-assembled gelators with a content less than 2 wt%, are thermally reversible functional soft materials ...
http://www.polymer.cn/research/dis_info16823 |
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Structure and properties of UHMWPE fibers gel-spun from high concentration solution
关键字:UHMWPE fibers; high concentration solution; thermal properties; mechanical properties The general gel-spinning solution concentration for UHMWPE fibers is only about 5-8 wt%, which results in high manufacturing cost of UHMWPE fibers. In this experiment, UHMWPE fiber was gel-spun from 16 wt% UHMWPE solution. The&nbs...
http://www.polymer.cn/research/dis_info13969 |
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Preparation and characterization of high flux ultrafiltration composite membrane based on nanofibrous substrate and cellulose acetate coating
关键字:cellulose acetate,nanofibrous substrate,ultrafiltration,high flux High flux ultrafiltration (UF) membranes based on electrospun polyacrylonitrile (PAN) nanofibrous substrates and cellulose acetate (CA) hydrophilic coatings have been demonstrated. Scanning electron microscopy (SEM) was used to examine the surface&nb...
http://www.polymer.cn/research/dis_info11603 |
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Semi-adiabatic Anionic Polymerization of ε-Caprolactam at Relative High Temperatures by various activators
关键字:Semi,adiabatic,Anionic,Polymerization,Caprolactam,Relative,High,Temperatures,various,activators, Anionic polymerization of ε-caprolactam(CL) is one of the main methods for fabrication of polyamide 6 (PA6).Malkin et al[1, 2] and Macosco et al[3] are among those who first studied and gave the most suitable kinetics equati...
http://www.polymer.cn/research/dis_info7149 |
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