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[Small] Patterned Polymer Carpets
For the development of polymer carpets as active devices for micro- and nanotechnology, a control of the polymer carpet morphology and especially control of the stimulus responsive polymer brush is needed. Here, we report on the fi rst example for the fabrication of patterned polymer carpets. On a two-dimensional framework of fully crosslinked and chemically patterned nanosheets, polymer brushes...
http://www.polymer.cnt//ss/zhang_ning/publicationsshow_2900.html |
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[Small] Polymer carpets
The fabrication of defined polymer objects of reduced dimensions such as polymer-coated nanoparticles (zero-dimensional (0D)), cylindrical brushes (1D), and polymermembranes (2D), is currently the subject of intense research. In particular, ultrathin polymer membranes with high aspect ratios are being discussed as novel materials for miniaturized sensors because they would provide extraordinary ...
http://www.polymer.cnt//ss/zhang_ning/publicationsshow_2629.html |
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European Polymer Journal 2009, 45, 1659-1667
The novel comb-type biodegradable graft copolymers based on e-caprolactone and L-lactide were synthesized. Firstly, 2-oxepane-1,5-dione (OPD) was synthesized by the Baeyer–Villiger oxidation of 1,4-cyclohexanedione, and wassubsequently copolymerized with e-caprolactone (CL) to produce poly(2-oxepane-1,5-dione-co-e-caprolactone) (POCL) catalyzed by stannous(II) 2-ethylhexanoate in toluene. Th...
http://www.polymer.cnt//ss/langmeidong/publicationsshow_1633.html |
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Polymer Degradation and Stability 2008, 93, 2089-2095
The synthesis, characterization, and degradability of the novel aliphatic polyester bearing pendant N-isopropylamide functional group are reported for the first time. 2-(N-Isopropyl-2-carbamoylethyl) cyclohexanone (CCH) was first synthesized by the Michael reaction of N-isopropylacrylamide with cyclohexanone and was subsequently converted into 6-(N-isopropyl-2-carbamoylethyl)-3-caprolactone (CCL) ...
http://www.polymer.cnt//ss/langmeidong/publicationsshow_1628.html |
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Journal of Applied Polymer Science 2002, 86, 2296-2306.
The purpose of this research was to synthesize and characterize a novel class of four-arm, star-shape biodegradable polymers having double-bond functionality as a precursor for free-radical polymerization, with unsaturated monomers or macromers or photocrosslinking for network formation. The synthesis involved two basic steps. First, hydroxyl-functionalized four-arm poly(_-caprolactone) s (PPCL-OH...
http://www.polymer.cnt//ss/langmeidong/publicationsshow_1609.html |
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Journal Applied Polymer Science 1998, 70(8), 1427-1436
Poly(ethylene glycol)-block-poly(butyl acrylate) synthesized by radical polymerization in a one-step procedure were characterized by gel permeation chromatography, infrared, 1H-NMR spectroscopy, and differential scanning calorimetry (DSC). The crystalline property, emulsifying property, and phase transfer catalytic effect in the Williamson reaction were studied. It was found that the crystallinity...
http://www.polymer.cnt//ss/langmeidong/publicationsshow_1603.html |
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Journal of Applied Polymer Science 1997, 65(9), 1667-1674
Prepolymers of poly(ethylene oxide) (Pre-PEO) were synthesized by reacting azoisobutyronitrile (AIBN) with poly(ethylene glycol) (PEG), and their structures were characterized by IR and UV. The molecular weight of pre-PEO was related to the feed ratio and reaction time. These prepolymers can be used to prepare block copolymers—poly(ethylene oxide) -block-poly(butyl acrylate) (PEO-b-PBA) by r...
http://www.polymer.cnt//ss/langmeidong/publicationsshow_1599.html |
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Amphiphilic Polymer Micellar Disruption Based on Main-Chain Photodegradation
关键字：Amphiphilic Polymer Micellar
The amphiphilic block copolymer poly(ethylene
oxide)-b-poly(N,N′-dihydroxypyromellitimide-hexamethylene diisocyanate)
(PEO-b-PNH) with photocleavable N?O urethanes has
been prepared to investigate the photodegradation of the hydrophobic
main chain and therefore the disruption of copolymer
micelles. Measurements of absorption and emission spectra, optical
transmittance, DLS ana...
http://www.polymer.cn/research/sy_info19441 |
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Journal of Polymer Science Part A: Polymer Chemistry 2011, 49(22), 4747
关键字：graphene; nanocomposites; SET-LRP; synthesis
A mild and efficient strategy is presented for growing thermo-sensitive polymers directly from the surface of exfoliated graphene oxide (GO). This method involves the covalent attachment of Br-containing initiating groups onto the surface of GO sheets followed by in situ growing poly[poly(ethylene glycol) ethyl ether methacrylate] (PPEGEEMA) via single-electron- transfer living radical polymerizat...
http://www.polymer.cn/research/sy_info14696 |
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Transformation of polymer fibers and rods into polymer spheres driven by the rayleigh instability
Electrospinning is a simple and convenient method to produce polymer fibers with diameters ranging from several nanometers to a few micrometers. Various types of polymer fibers have been made by electrospinning for different applicatio...
http://www.polymer.cn/research/dis_info16800 |
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