查询词典 polymerization

In the second part of the thesis, the pseudo kinetic constant method was used inmodeling vinyl/divinyl cross-linking atom transfer radical polymerization.

对于双烯／单烯的ATRP交联聚合反应，应用拟动力学常数的方法，推导出了双烯／单烯ATRP交联聚合的普适矩方程模型。

In this thesis, themethod of moments was used in modeling the graft polymerization of vinyl acetatefrom polyethylene glycol and the vinyl/divinyl atom transfer radical copolymerizationwith cross-linking.

本文运用矩方法分别对聚乙二醇接枝醋酸乙烯酯聚合体系和双烯／单烯的原子转移自由基交联聚合体系进行了深入的建模研究。

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。

The results show that the introducing of multivinyl monomer and CaCO3 can slow down polymerization rate to different extent.Using 1％～5％ trimethylolpropane trimetbacrylateor divinyl benzene,tight encapsulation of CaCO3 can be realized and beyond 94％PS cannot be extracted. The amount of crosslinker or emulsifier should be accommodated when the load amount of CaCO3 is increased.CaCO3 content in the product increases consequently with the increase of the loaded amount of CaCO3,which can be known from FT-IR and TGA.TEM observations reveal that when the load amount of CaCO3 is 14.8％,most CaCO3 particles are encapsulated and each latex particle contains one CaCO3 particle.Composite particles have well-defined core—shell structure and the thickness of polymer shells is around 10 nm.However,the thickness of polymer shell decreases and many free CaCO3 particles appear when the load amount of CaCO3 reaches 29.3％and 58.7％,respectively.

结果表明，多乙烯基单体以及碳酸钙的引入会使聚合反应速率有不同程度的降低；使用1%～5%的TMPTMA或DVB，可实现PS对碳酸钙颗粒的牢固包覆，不可抽提的PS达94%以上；当碳酸钙用量改变时，需要适当调整乳化剂和多乙烯基单体的用量；IR和TGA的结果表明，随着碳酸钙用量增加，产物中的碳酸钙含量也相应增加；TEM照片和计算结果显示，当碳酸钙用量为14.8%时，绝大部分碳酸钙颗粒被包覆，且基本上每个乳胶粒中包覆一个碳酸钙颗粒，复合粒子具有清晰的核壳结构，壳层厚度约为10 nm，而当碳酸钙用量增加到29.3%和58.7%时，壳层厚度减小，并且出现较多裸露的碳酸钙颗粒。

The title nano-sized polymeric microgels were synthesized by emulsion polymerization method,using divinyl benzene as crosslinking agent and methyl methacrylate,hydroxyl ethyl methacrylate,butyl acrylate as monomers.

通过乳液聚合的方法，以二乙烯基苯为交联剂，用甲基丙烯酸甲酯、甲基丙烯酸-β-羟乙酯、丙烯酸丁酯等丙烯酸酯类单体合成纳米尺寸的聚合物微凝胶粒子。

In the case of radical-initial polymerization, the chain-transferring reaction occurred in the blends of PMMA and PV Ac, and there was a dramatical increase in gel content when PV Ac concentration come to a critical value of 30 wt%.

研究结果表明在PMMA/PV Ac共混体系中，链转移反应导致了凝胶产物的形成，并且凝胶含量的增加与共混组成的变化存在一临界现象，即当PV Ac含量超过30wt%，体系中的PMMA-PV Ac凝胶含量急剧增加。

In order to approach the industrialization continuous production flow, the article studied production of acid dyeable polyacrylonitrile by the continuous water phase suspension polymerization using the existing laboratory instrument. The influence of third monomer and initiator content on productivity and dye uptake of PAN were investigated.

为了接近工业化的连续生产流程，利用实验室现有的仪器设备，设计了连续水相悬浮法生产酸性染料可染聚丙烯腈的实验装置，实现了聚丙烯腈的连续聚合，并研究了第三单体、引发剂用量对聚丙烯腈上染率、产率的影响。

Polymerization was carried out between dimethyl adipate and triamine with the same mole ratio in the reactor. Acid dyeable additive can be obtained under the conditions of transesterification temperature 180~220℃, polycondensation temperature 240~270℃,pressure40~50Pa, The infrared analysis results showed that at the position of 1639cm^(-1), there was an obvious characterisitc peak of amide bond.

己二酸二甲酯与三胺按等量比在反应釜中进行聚合，在酯交换温度180~220℃，缩聚温度240~270℃，压力40~50Pa条件下即可获得酸性染料可染添加剂。

He best reaction conditions of TMAA were as follows: p-benzenediol as the polymerization inhibitor and the amount 1% of acrylic acid, reaction temperature 180 ℃,reaction time 3 h, raw material mass ratio of methyl eleostearate /acrylic acid 1:0.247 and the yield of TMAA was 85%.

MAA的最佳合成条件为：反应温度180℃，反应时间3 h，桐酸甲酯和丙烯酸的质量比为1：0.247，阻聚剂对苯二酚的加入量为丙烯酸质量的1%，产率为85%。

Specifically, itcontains 8 chapters.In chapter 1, the formation, structures, properties and the futureprospect of liposome were thoroughly reviewed;In chapter 2, the stibility and permeability of phopholipid -eleostericacid liposome were studied together with the effect of polymerizationof eleostearic acid. This membrane system was very sensitive to 〓,the effect of 〓 was clarified to increase the aggregation/fusion ofliposomes and made the permeability of mixed liposomes much higher;In chapter 3, two polymerizable conjugated diyne bolaamphiphiles were synthesized. They could form very stable mixed liposome, andthe diyne could be polymerized by UV light in bilayer liposomes, as aresult, the stability of mixed liposome against solvent or surfactantafter polymerization were enhanced. In chapter 4, two kinds of amphiphilic amino acids were synthesized andstable liposomes were formed therefrom After the condensationpolymerization of amino acid in bilayer liposomes, stable polypeptide liposomes were obtained, which had lower phase transition temperatureand higher permeability.In chapter 5, four kinds of glycolipids were synthesized and theiraggregation behavior in water was comparied. When incorporated intophospholipid bilayer membranes, they could increase the phase transitiontemperatures and inhibit the aggregation and fusion of mixedliposomesat lower temperature.In chapter 6 and 7, three kinds of steroidal bolaamphiphiles withdifferent chain lengths were synthesized. Incorporation of steroidalmoiety to the center of lipid bilayer membrane obviously increased themobility of lipid membrane and shifted Tc to lower temperature side incomparasion with cholesterol. The bolaamphiphile which was shorter thanthe hosted lipid bilayer membrane thickness influenced the lipid packingmore obviously.

全文共分8章：第一章对脂质体的形成、结构、性质及展望进行了较为详细的文献综述；第二章研究了磷脂-桐酸脂质体的稳定性，通透能力及桐酸的聚合对这些性质的影响；磷脂-桐酸混合脂质体为一类对〓灵敏的脂质体，〓的作用首先是使脂质体集聚然后使脂质体融合，并加速内包荧光物的释放；第三章通过合成两种可聚合共轭双炔双极性双亲分子DDCA，DDOL，研究了共双炔分子在双分子层脂质体膜上的聚合及对脂质体性质的影响，聚合可以提高脂质体相对于溶剂及表面活性剂的稳定性；第四章合成了两类氨基酸为极性基团的双亲分子，它们均可以在超声下形成稳定的脂质体结构；氨基酸基团可以在脂质体上进行缩聚反应，若聚合后脂质体表面仍有足够的亲水能力，则可得到稳定的多肽型脂质体；聚合后脂质体的相变温度降低，通透能力增加；第五章合成了四种亲水基团为单糖基的双亲分子GL-l，GL-2，GL-3， GL-4，研究了它们在水中的分散情况、集合体形态与分子结构的关系；在DMPC双分子层膜中加入糖脂分子可以使脂质体的相变温度提高，阻止脂质体在低温放置时的集聚与融合；第六章-第七章合成了三种不同碳链长度的双极性含胆甾环双亲分子 CL-1，CL-2，CL-3；它们可以象胆固醇一样与磷脂混合形成稳定脂质体，胆甾环基团位于脂质体双分子层膜的中间；与胆固醇的作用相反，它们可以增加磷脂双分子层膜的流动性，降低混合脂质体的相变温度；三种分子的作用与其碳链长度和磷脂双分子层膜的厚度有关，比膜厚度短的分子影响最大。

The objective is to subjugate and discourage the people, because that allows the elite to continue to rule unopposed.

其目的是压制和打击人民的积极性，因为这可以让实权派继续统治不会沦为反对派。

GOD,this is the second time you vanquished me!

天啊，这是第二次你打败了我！