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Journal of the American Chemical Society. 2002, 124, 14834-14835
A method for the production of crystalline polymorphs from solution is described which utilizes a diverse set of polymer heteronuclei. Application to crystalline polymorph selection for the important pharmaceuticals acetaminophen and carbamazepine is demonstrated. This method provides a new paradigm for polymorph selection, where solvent and temperature conditions can be chosen on the basis of pro...
http://www.polymer.cn//ss/langmeidong/publicationsshow_1606.html |
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Chemical Research in Chinese Universities (1994), 10(3): 197-201
This paper covers the effect of g-radiation on crystal transformation of poly(vinylidene fluoride) before and after drawing as well as during annealing process. The results show that the drawing results in a drastic increase in both crystallinity along the meridian direction and b-form crystal content for the irradiation samples. When the drawn samples were irradiated under appropriate dose and th...
http://www.polymer.cn//ss/langmeidong/publicationsshow_1591.html |
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Surface modification of polyacrylonitrile fibers for superabsorbent fibers
关键字：superabsorbent fibers,hydrolysis,crosslinking,absorbency
Superabsorbent fibers based on polyacrylonitrile (PAN) fibers were studied. To achieve superabsorbent fibers, PAN fibers were hydrolyzed by sodium hydroxide (NaOH), and then crosslinked by glutaraldehyde. Fourier transform infrared spectroscopy (FTIR...
http://www.polymer.cn/research/dis_info11609 |
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Continuous Nanoscale Carbon Fibers with Superior Mechanical Strength
关键字：Carbon fibers
Carbon fibers possess high strengths (3-7 GPa), high moduli (200-500 GPa), and low densities (1.75-2.00 g/cm3). The high strength-to-weight ratio combined with superior stiffness has made carbon fibers the material of choice for high&n...
http://www.polymer.cn/research/dis_info10512 |
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BIOMEDICAL ULTRAFINE FIBERS PREPARED BY ELECTROSPINNING
关键字：BIOMEDICAL,ULTRAFINE,FIBERS,PREPARED,ELECTROSPINNING,
Recently much work has focused on electrospinning that can prepare fibers with diameters ranging from 5 nm to 500 nm, one hundred to ten thousand times smaller than those prepared by traditional methods of solution or me...
http://www.polymer.cn/research/dis_info34 |
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Surface modification of polyacrylonitrile fibers for superabsorbent fibers
关键字：superabsorbent fibers,hydrolysis,crosslinking,absorbency
Superabsorbent fibers based on polyacrylonitrile (PAN) fibers were studied. To achieve superabsorbent fibers, PAN fibers were hydrolyzed by sodium hydroxide (NaOH), and then crosslinked by glutaraldehyde. Fourier transform infrared spectroscopy (FTIR...
http://www.polymer.cn/research/dis_info11609 |
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Continuous Nanoscale Carbon Fibers with Superior Mechanical Strength
关键字：Carbon fibers
Carbon fibers possess high strengths (3-7 GPa), high moduli (200-500 GPa), and low densities (1.75-2.00 g/cm3). The high strength-to-weight ratio combined with superior stiffness has made carbon fibers the material of choice for high&n...
http://www.polymer.cn/research/dis_info10512 |
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BIOMEDICAL ULTRAFINE FIBERS PREPARED BY ELECTROSPINNING
关键字：BIOMEDICAL,ULTRAFINE,FIBERS,PREPARED,ELECTROSPINNING,
Recently much work has focused on electrospinning that can prepare fibers with diameters ranging from 5 nm to 500 nm, one hundred to ten thousand times smaller than those prepared by traditional methods of solution or me...
http://www.polymer.cn/research/dis_info34 |
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BIOMEDICAL ULTRAFINE FIBERS PREPARED BY ELECTROSPINNING
关键字：BIOMEDICAL,ULTRAFINE,FIBERS,PREPARED,ELECTROSPINNING,
Xiaoyan Yuan, Chunxue Zhang, Bin Duan, Cunhai Dong, Yunhui ZhaoSchool of Materials Science and Engineering, Tianjin University, Tianjin 300072, P.R. China
Recently much work has focused on electrospinning that can prepare fibers with diameters ranging from 5 nm to 500 nm, one hundred to ten thousand times smaller than those prepared by traditional methods of solution or melt spinning. ...
http://www.polymer.cn/Industry/industry272.html |
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PHAs electrospun fibers for drug delivery
关键字：PHAs,electrospun,fibers,drug,delivery,
Y. Shi, P. Hu, H. Ye, X. Qiu
Department of Chemical Engineering, Tsinghua University, Beijing, China
Keywords: PHBV, PHB, rifampin, electrospun, drug delivery
Polymeric drug delivery systems have numerous advantages compared with conventional dosage forms, such as improved therapeutic effect, reduced toxicity, convenience, and so on. PHAs are thought to be a sort of good n...
http://www.polymer.cn/Industry/industry235.html |
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