查询词典 polymerization

It is demonstrated that living polymerization can be achieved when the concentration of electron pair donors such as DMAB or Et3N is higher than that of trace water in the polymerization system,and that polymers with narrow molecular weight distribution can be obtained.

发现当N，N-二甲基苯胺或三乙胺的浓度稍高于质子性杂质的浓度时，即能实现异丁烯的活性聚合，得到分子量分布较窄的聚合物。

It comprises following steps: dissolving cross linker, functional monomer, mode molecule and initiator into pore-generating agent, getting mixing solvent; hypersonic de-gassing the mixing solvent; venting nitrogen after even mixing, sealing at nitrogen condition or vacuum condition; proceeding polymerization reaction, employing heat initiation for molecule engram polymer; grinding got molecule engram polymer after polymerization, sifting and removing mode molecule with organic solvent, checking with high efficiency liquid chromatography- ultraviolet until there is no mode molecule; vacuum drying and getting final product.

具体为：首先将交联剂、功能单体、模板分子和引发剂溶解在致孔剂中，得到混合溶剂；将混合溶剂超声脱气；混合均匀后，通入氮气，氮气状态或抽真空状态下密封；进行聚合反应，分子印迹聚合物采用热引发；聚合反应结束后，将合成的分子印迹聚合物取出研磨、过筛后用有机溶剂除去模板分子，通过高效液相色谱-紫外检测，直到检测不到模板分子；将除去模板分子的聚合物，真空干燥，得到利血平特异的分子印迹聚合物。

This article used basicity electrochemic synthesized the polymerization aluminum chloride solution through the active control electrolysis process essential parameter was allowed to prepare basicities differently the hydroxyl polymerization aluminum chloride solution .

本文采用电解法合成了聚合氯化铝溶液，通过有效控制电解过程的关键参数，可以制备出不同盐基度的羟基聚合氯化铝溶液。

They cationic monomer Acryloyloxyethyl ethyl trimethyl ammonium chloride and resource-rich, low price, low values of weathering burning coal as its main raw material, aqueous dispersion polymerization methods, through the weathered coal / cationic monomer in-situ polymerization in the international arena for the first time prepared by a high efficiency oil-bearing wastewater treatment agent; use of oil-field wastewater treatment, the waste slurry as raw material, has developed the world's first CWS dispersants and oil fields of the "three mining" using profile control plugging agent, in order to The high value of solid waste has opened up new avenues of applications; integration of related technologies, and open up for the oil field wastewater treatment, an annual output of 300 tons of sets of processes and devices for the first time realized the slop oil and drilling fluid back row of the industrialization of treatment .

他们以阳离子单体丙烯酰氧乙基三甲基氯化铵与资源丰富、价格低廉、燃烧值低的风化煤为主要原料，采用水介质分散聚合方法，通过风化煤/阳离子单体原位聚合技术，在国际上首次制备出高效含油废水处理剂；采用油田废水处理后的废弃物泥浆为原料，在国际上率先开发出水煤浆分散剂和油田"三采"用调剖堵水剂，为固体废弃物的高值化应用开辟了新途径；集成相关技术，开拓出针对油田废水处理、年产300吨的成套工艺和装置，首次实现了油田污油水和钻井返排液的工业化处理。

This data not noly suggest that polymerization-depolymerization is important to stomatal movement and stability, but also interpret conflicting results whether actin polymerization or depolymerization in stmatal guard cell.

这不仅提出了肌动蛋白解聚—聚合在气孔开关运动和稳定性中的重要作用，而且可以解释保卫细胞中肌动蛋白是处于解聚状态还是聚合状态的不同报道。

In the polymerization system,there are two kinds of active centers having higher catalytic activity for isoprene polymerization.

事实表明，该聚合体系中存在着两种过渡金属活性中心，它们按各自的机理进行异戊二烯的聚合。

PURAC offers the lactide monomers as polymerization feedstock and in cooperation with Sulzer the polymerization technology to make PLA.

普拉克提供的原料和聚合与苏尔寿技术合作的乳酸聚合单体，使人民解放军。

Two main synthesis methods of PLA, condensation polymerization of lactic acid and ring-opening polymerization of lactide in recent years are described in details, and the situation of production is analyzed as well.

最后，对聚乳酸的合成及应用前景进行了展望，并指出可生物降解材料聚乳酸一旦工业化，它在医用及降解塑料方面将会有难以估量的应用前景

In theoretical studies of the present paper, in melts diblock 1 with high degree of polymerization forms lamella and diblock 2 is disorder due to its smaller degree of polymerization.

有较高聚合度的纯diblock 1熔体呈层状有序结构；有较低聚合度的纯diblock 2熔体呈均匀相。

The efficiency of surfactant was evaluatedby measurement of the polymerization kinetics, the conversion of MMA, the amount of thecoagulation, the surface tensteon of the miniemulsion before and after polymerization, andthe particle size and particle size distribution of obtained lattice.

通过对聚合反应的动力学，单体MMA的转化率，凝结物的生成量，细乳液聚合前后的表面张力，及所得乳胶粒子的粒径和粒径分布的表征，评价了大分子乳化剂在RAFT细乳液聚合中的效率。

With the development of highway construction, the speed of cars has been gradually increased.

随着公路的发展，汽车的车速也在不断提高。

So we basically had to develop a bond with the animal in terms of socializing with it.

所以我们就主要想通过跟它沟通的方式来建立一种良好的关系。