聚苯乙烯

This polymer catalyst was used in the aerobic oxidation of cyclohexene under mild conditions.

合成了聚苯乙烯担载的酪氨酸水杨醛希夫碱钴配合物，并研究了该高分子金属配合物对分子氧氧化环己烯的催化性能。

Dimethylamino)ethyl methacrylate was polymerized using PS-CH_2Cl as macroinitiator and CuCl/ 2,2 '-Bipyridyl as catalyst in toluene to acquire amphiphilic brush-type copolymers of PS-g-PDMAEMA.

再以氯甲基化的聚苯乙烯(PS-CH_2Cl)为大分子引发剂，在CuCl和2，2′-联吡啶(2，2′-Bipyridyl，bpy)存在下，以甲苯为溶剂，进行甲基丙烯酸N，N-二甲胺基乙酯2-(Dimethylaminoethyl methacrylate，DMAEMA的ATRP聚合，得到两亲性的梳状共聚物PS-g-PDMAEMA。

A CR/polystyrene IPN blend was prepared by stepwise synthesis based on CR and styrene monomer and using divinyl benzene as crosslinking agent of PS.

以CR和苯乙烯单体为原料，二乙烯基苯为苯乙烯的交联剂，采用分步合成法制备CR/聚苯乙烯互穿网络共混物。

The amphiphilic block copolymers are synthesized using TEMPO controlled polymerization method with tertrabutylammonium styrenesulfonate and divinyl benzene as monomers for each block.

此双亲性共聚高分子乃利用TEMPO之方式进行活性聚合，将磺酸钠盐聚苯乙烯单体转换成疏水性单体，第二链段选择DVB作为具备交联之单体。

To establish a MPLC method for the content determination of resveratrol in Polygonum cuspidatum Sieb. Et. Zucc, Analytical column SOURCE 5RPC ST 4.6/150 was used with a mixture of acetonitrile+water (30+70,volume ratio ) as mobile phase ,with a flow rate of 1ml/min and the UV detection wavelength was 306nm, The linear range was 0.6-1.6mg/ml (r=0.9919). The average recovery of prodatin was 103.0%-90.4%(RSD=7.21%). The method is convenient and accurate. Result indicated a reverse phase chromatography media based o n polystyrene/divinyl benzene has excellent resolution for resveratrol in cuspidatum. P rovide theoretical support for process development.

色谱条件采用SOURCE 5RPC ST 4.6/150预装柱，以乙腈/水(体积比30/70)溶液为流动相，流速1ml/min、检测波长为308nm，结果表明，白藜芦醇在0.6～1.6mg/ml的浓度范围内峰面积积分值与浓度的相关系数r=0.9919；所测定的虎杖饮片中白藜芦醇平均含量为0.304％，平均回收率为103.0％～90.4％；实验表明，以聚苯乙烯为基架的反相介质对于虎杖中自藜芦醇具有良好的分辨率，适合其有效成分的检测、分离，对虎杖中白藜芦醇制备的科学研究过渡到工艺开拓有很好的借鉴。

Firstly, partial sulfonated polystyrene were prepared by solution polymerization with the raw materials of styrene, sodium styrene sulfonate and divinyl benzene; Secondly, the SPS/OMMT nanocomposites were prepared by intercalation polymerization with the monmers and organically modified montmorillonite.

首先，利用NMP为溶剂，BPO引发苯乙烯、苯乙烯磺酸钠、二乙烯基苯溶液共聚；同时，采用高分子的单体与有机蒙脱土插层聚合制备了磺化聚苯乙烯阳离子树脂／蒙脱土复合材料。

Professional sales companies operating bromide products: sodium bromide, sodium bromide, potassium bromide, potassium bromate, Tetrabromobisphenol A, Deca-BDE, ten PBDEs, DBDPE, hexabromodiphenyl Central dodecane, dibromo neopentyl glycol, neopentyl bromide three alcohols, three bromine phenol, octabromodiphenyl ether, brominated polystyrene, bromide, calcium bromide, dibromo succinic acid, dibromo-D ene glycol, bromide surfactants series: Dodecyl trimethyl ammonium bromide, tetradecyl trimethyl ammonium bromide, cetyltrimethyl ammonium bromide, octadecyl trimethyl ammonium bromide dodecyl trimethyl ammonium chloride, tetradecyl trimethyl ammonium chloride, cetyl trimethyl ammonium chloride, octadecyl trimethyl ammonium chloride, tetrabutyl ammonium bromide wholesale sales: dimethylolpropionic acid, DL-malic acid, isophthalic acid PIA, glycolic acid, adipic acid.

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MethodsAnimal experiment:To embolize small coronary artery of dogs by ejecting polystyrene microbubble(dm=100μm).Among the eleven dogs,five were embolized by LAD and six were embolized by LCX.

方法一。动物实验：11只犬使用聚苯乙烯微泡(直径10μm)栓塞微小冠状动脉，5只栓塞前降支，6支栓塞回旋支，栓塞前后分别行冠状动脉造影。

The promotion action of ionic liquid as an accelerant in synthesizing benzaldehyde ethanediol acetal and benzaldehyde propanediol acetal was studied.

摘要以离子液体为促进剂，强酸性聚苯乙烯732催化了苯甲醛与两种二元醉的缩醛反应。

In this thesis, the polymerization of triblock copolymer of styrene-butadiene-methyl methacrylate was carried out in glass flask ,with n-BuLi as initiator, 1,1-diphenylethylene as capping agent and Lithium 2(2-methoxyethoxy) ethoxide as additive.

本论文以n-BuLi为引发剂、1，1-二苯基乙烯为戴帽剂、2-(2-甲氧基乙氧基)乙氧基锂为添加剂，对玻璃聚合瓶中非极性-极性三嵌段共聚物聚苯乙烯—聚丁二烯—聚甲基丙烯酸甲酯的合成进行了研究。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。