苯乙烯

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。

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。

Totally 50 male Kunming mice were recruited and randomized into 5 groups: normal control group, model group,positive control group, 2,3,5,4'-tetrahydroxystilbene-2-O-β-D-glucoside 0.03 g/kg group (low-dose group), and 2,3,5,4 '-tetrahydroxystilbene-2-O-β- D-glucoside 0.1 g/kg group(high-dose group).2,3,5,4'-tetrahydroxystil bene-2-O-β-D-glucoside was an effective component extracted from Chinese herb tuber fleeceflower root in the Department of Pharmacology, Xuanwu Hospital of Capital University of Medical Sciences.

选取雄性昆明小鼠50只，随机分为5组：即正常组、模型组、阳性对照组、二苯乙烯苷0.03g/kg组、二苯乙烯苷0.1g/kg组。

Firstly, Copolymerization of acrylamide and styrene was carried out in a microemulsion system, in which AM aqueous solution was the continue phase and St was the dispersed phase using ST-80 as surfactants respectively, then hydroxamic functions were prepared with hydroxylamine salt at temperatures of from 60℃ to 90℃.

首先以丙烯酰胺水溶液为连续相，以苯乙烯为分散相，ST-80为乳化剂制成微乳液，在15℃~35℃合成丙烯酰胺与苯乙烯的共聚物；然后采用程序控温方式，在60℃~90℃用硫酸羟胺将共聚物羟肟化合成了一种带有苯环结构的嵌段型氧肟酸类聚合物材料。

At 15-35℃, copolymerization of acrylamide and styene was carried out in a microemulsion system, in which AM aqueous solution was the continuous phase and St was the dispersed phase using ST-80 as surfactants, respectively. Hydroxamic functions were prepared with hydroxylamine salt at temperatures from 60℃ to 90℃.

以丙烯酰胺水溶液为连续相，苯乙烯为分散相，ST-80为乳化剂制成微乳液，在15~35℃下合成丙烯酰胺与苯乙烯的共聚物，采用程序控温方式，在60~90℃下使用硫酸羟胺将共聚物羟肟化得到产物。

Since many phenylvinyl ketone derivatives showed a certain anti- inflammatory activity, the indolyl group is introduced to this skeleton, and thus a series of 1, 4-penten-3-one derivatives characteristic of the structures of both phenylvinyl ketone and indole have been synthesized and characterized by elemental analyses, MS, UV-vis, and 〓 NMR as well. All these compounds are found to be trans-isomers.

考虑到苯乙烯酮类化合物的抗炎活性，本文将吲哚基团引入到该类化合物上，设计合成了一系列新的兼具苯乙烯酮和吲哚二者结构特征的1，4-戊二烯-3-酮衍生物Al-A24，并对其进行了表征，发现所有这些化合物均为反式构型。

The latices were stable ,thixotropic and monodisperse .The particle sizes range from 192 to 94 nm depending on the acrylamide fractions. The Hofmann reactions of these latices were carried out to introduce primary amines on the particle surface.

由于一直以来，丙烯酰胺-苯乙烯的共聚物胶乳只能用于制备两性胶乳，为了得到较高的胺化度，我们对不同单体配比的丙烯酰胺-苯乙烯共聚物胶乳进行Hofmann反应，探讨了丙烯酰胺在单体中所占的比例对Hofmann反应的影响。

The effects of sodium silico-fluoride on the zeta-potential, hydrophility and adsorption of styryl phosphonic acid of diaspore particle surfaces have been systematically studied.

系统研究了氟硅酸钠对一水硬铝石表面ζ电位、亲水程度及苯乙烯膦酸吸附的影响，提出了苯乙烯膦酸浮选金红石与一水硬铝石时氟硅酸钠对一水硬铝石的选择性抑制作用机理。

The organic montmorillonite VC18-MMT was prepared by the exchanging inorganic cations with vinylbenzyldimethyloctadecylammionun chloride which could be co-polymerized with styrene.The predispersion of VC18-MMT was realized via sonicating the suspension of the montmorillonite particles in emulsifier solution,and then the styrene was added into the system and the in situ emulsion polymerization was carried out to prepare PS/VC18-MMT nanocomposites.

以可与苯乙烯发生共聚的阳离子表面活性剂乙烯苄基二甲基十八烷基氯化铵为插层处理剂改性蒙脱土（VC18-MMT），有机蒙脱土在超声波强剪切作用以及乳化剂作用下预分散在乳化剂溶液中，然后引入苯乙烯单体进行原位乳液聚合制备聚苯乙烯/蒙脱土纳米复合材料。

A new compound,3-_6-{4-(4-vinylene)pyridyl} stilbenyl}-N-ethylcarbazole was synthesized,and characterized by elemental analysis,IR,MS and ~(1)H NMR spectra.

报道一种新型的D-π-D-π-A结构的化合物：3-(4-溴苯乙烯基)-6-[(4-乙烯基吡啶)苯乙烯基]-N-乙基咔唑的合成。

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。