乙烯基

Key words: breast implants;N-vinyl pyrrolidone;CT

硅胶乳房假体；N-乙烯基吡咯烷酮；CT

The magnetic polymer complex microspheres with core-shell structure were synthesized by copolymerizing of pyrrolidone acid and methacrylic on surface of Fe3O4 particles modified by OP, using potassium persulfate as a initiator.

以N-乙烯基吡咯烷酮和甲基丙烯酸为原料，过硫酸钾为引发剂，采用乳液聚合的方法共聚包埋自制的磁流体Fe3O4，制得了Fe3O4/P核壳复合微球。

Methods N-vinyl pyrrolidone, the hydrophilic monomer, was grafted onto the surface of silicone breast implants by 60Co radiation.The implants were buried in the bilateral subcutaneous layers of the back of rabbits.The unchanged implants were used as the control group.

利用钴60共辐射的方法把亲水性单体 N-乙烯基吡咯烷酮接枝到硅胶乳房假体表面，改变其表面特性后植入兔的背部，以未经改性的正常假体作为对照组，隔一定时间通过组织切片及CT扫描的方法观察假体周围纤维囊壁的形成情况。

The effects of the type and content of vinyl monomer containing polar group on the flame retardance of PP were studied.

着重探讨了含极性基团的乙烯基单体种类及用量等因素对PP阻燃性的影响。

- 1 - [2 -（bispheny - iodine - stannyl）vinyl] - 1 - cyclohexanol crystal structure antifumor activity

-1-[2-乙烯基]-1-环己醇；晶体结构；抗癌活性

MCM-41, HMS, and MSU mesoporous silica molecular sieves were prepared via S〓I〓, S〓X〓I〓, S〓I〓, and N〓I〓 assembly pathway, in which cetylpyridium bromide, tetredecylamine, and polyoxyethylene (10) stearyl ether was used as the template, respectively. The mesostructures were characterized and confirmed by XRD, N〓 adsorption/desorption, TG, and high resolution TEM. The difference and relationship between these mesophases were also investigated.

分别以溴代十六烷基吡啶、十四胺和十八烷基聚氧乙烯基醚为模板剂，通过S〓I〓、S〓X〓I〓、S〓I〓和N〓I〓&超分子组装模式&合成了具有MCM-41、HMS和MSU结构的介孔SiO〓分子筛，用XRD、N〓吸附/脱附、TG和高分辩TEM等方法对它们的骨架和孔道结构进行了表征，并系统地比较了这几种介孔结构之间的区别与联系

Titanium incorporated mesoporous molecular sieves Ti-MCM-41, Ti-HMS, and Ti-MSU were synthesized through S〓I〓, S〓I〓, and N〓I〓 pathways using cetylpyridium bromide, tetredecylamine, and polyoxyethylene (10) stearyl ether as the structure-directing agents, respectively. The framework structure and the titanium coordination environment of these materials were characterized by XRD, N〓 adsorption/desorption, TG, TEM, FT-1R, DR UV-Vis, and ICP-AES. It was confirmed that the titanium was highly dispersed in the silica-based framework positions, and all samples were free of extra framework titanium impurities. The catalytic performance of these titanium containing mesoporous materials was investigated in the oxidation of styrene with aqueous H〓O〓 as the oxidant.

以TEOS和TBOT为硅源和钛源，分别以溴代十六烷基吡啶、十四胺和十八烷基聚氧乙烯基醚为模板剂，通过S〓I〓、S〓I〓和N〓I〓方式合成了含钛的介孔分子筛Ti-MCM-41、Ti-HMS和Ti-MSU，用XRD、N〓吸附/脱附、TEM、FT-IR、DR UV-Vis和ICP-AES等方法对它们的骨架结构、孔道结构以及钛原子的存在方式等进行了系统表征，结果表明钛原子以高分散的形式存在于以SiO〓为基本单元的介孔分子筛的骨架结构中，制备过程中未形成聚集态的骨架外金属氧化物物种。

This product was prepared w ith octamethyl-cyclotetrasiloxane and tetramethyltetravinylcyclote-trasiloxane as monomers,a low visco sity hydroxyl -terminated silicone oil as an end -bl ocking agent and tetramethylammonium hydroxide as catalyst.

以八甲基环四硅氧烷为单体，四甲基四乙烯基环四硅氧烷为改性单体，羟基硅油为封端剂和相对分子质量调节剂，四甲基氢氧化铵为催化剂，在羟基硅油质量分数小于0。

This product was prepared w ith octamethyl-cyclotetrasiloxane and tetramethyltetravinylcyclote-trasiloxane as monomers,a low visco sity hydroxyl -terminated silicone oil as an end -bl ocking agent and tetramethylammonium hydroxide as catalyst.

以八甲基环四硅氧烷为单体，四甲基四乙烯基环四硅氧烷为改性单体，羟基硅油为封端剂和相对分子质量调节剂，四甲基氢氧化铵为催化剂，在羟基硅油质量分数小于0.13%，催化剂质量分数为0.004%～0.007%时，采用共聚法制备了相对分子质量大于45×104，收率大于90%的端羟基聚二甲基硅氧烷。

In order to achieve salt-free dyeing of cotton fabrics with reactive dyes ,a water-soluble amino-terminated hyperbranched polymer(HBP-NH2) was synthesized from methyl acrylate and diethylene triamine by melt polycondensation.

为了实现棉织物活性染料无盐染色工艺，以丙烯酸甲酯和二乙烯基三胺为原料，采用熔融缩合聚合法合成了1种水溶性端氨基超支化合物(HBP-NH2)。

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。