聚合的

The comonomer in the copolymer by cat247 is trend to isolated. A few amount of comonomer could make the melting point remarkably decreased and maintain the crystalline at a relative high level. This catalyst can be use to produce the material with low melting point and high intensity such as packing film with low hotsealing temperature. The copolymer by cat24 is characteristic of uniform comonomer distribution and low melting temperature and crystallinity. Therefore, this catalyst could be used to produce LLDPE and POE according the comonomer content; cat246 has a strong copolymerization ability, and the resultant polymer has relatively high blockiness. If this trend is strengthened by adjustment of polymerization condition, the polymer can be used as thermal plastic elastomer with random and crystalline blocks.

由于各个催化剂所产生的聚合物各具特点，所以其潜在的工业用途不同。cat247的产物中共单体趋于孤立分布，极少的共单体即可使熔点明显降低而结晶度仍保持较高水平，有利于制备低熔点、高强度的材料（如低热封温度的包装膜等）。cat24的催化聚合产物无规程度比较高，对降低熔点和结晶度都十分有效，通过控制产物中共单体含量的多少，可以生产LLDPE和POE；cat246共聚合能力强，且产物有嵌段倾向，通过调整聚合条件强化这一倾向后，可以用来生产具有无规-结晶嵌段结构的热塑性弹性体。

More levels of nano-SiO〓 lead to larger particle size. An increase in polymerization reaction temperature causes the decrease in coagulum and increase in viscosity and particle size, and the nano-SiO〓 has same effects at certain temperature. When the levels of hydrophilic monomer acrylic acid and hydroxylethyl methacrylate in core composite are increased, the particle size of emulsifier-free emulsion decreases, in spite of the presence of nano-SiO〓.

无皂乳液具有单分散性好、表面洁净、成本低廉、不影响产品性能的特点，首次研究了含或不含纳米粒子的含羟基和羧基的丙烯酸无皂乳液聚合，发现含或不含纳米粒子的无皂乳液聚合后的粒子粒径较大，具有单分散性；较多的纳米粒子导致较大的乳液粒径；反应温度升高，凝聚物含量下降，而乳液粘度和乳胶粒粒径增加，在相同的反应温度下，纳米粒子降低了聚合过程中的凝聚物含量，增加了乳液聚合物的粘度和粒径；不论纳米粒子是否存在，当无皂乳液核组成中亲水单体AA和HEMA用量增加时，乳胶粒粒径均减少。

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。

The synthesized PCU was then characterized by infrared spectroscopy, differential scanning calorimetry, thermogravimetric analysis, small-angle X-ray scattering, and tensile strength measurement. The IR showed that the polymer synthesized by the above two methods both have the polycarbonate-urethane structure and the tensile measurement showed good mechanical performance of the polymer. The DSC and TGA data showed that there is an obvious soft-hard glass transition area, which indicated the existence of the micro-phase separation structure. The extent of the phase separation was affected by the ratio of starting materials, the molecular weight of PCD, and the polymerization method. The decomposition upon heating was observed in two steps. SAXS result showed that the radius (r_2), the distance between domains (d_2), and gyral radius (R_2) of hard segment micro-domain were fairly affected by the starting materials ratio and soft segment content.

IR结果表明两种方法合成的聚合产物均具有聚碳酸酯聚氨酯的结构；拉伸实验表明聚合产物具有良好的力学性能；DSC、TG结果表明，聚合物呈现出较为明显的软硬段玻璃化转变区，表明存在微相分离的结构，相分离的程度受原料配比、软段分子量、聚合方法的影响，其热分解分为明显的两个阶段； SAXS结果表明，聚合物原料配比、软段含量的变化对硬段微区回旋半径R_2，微区间距d_2，微区半径r_2影响不大其值分别为9.5(A|°、29、7.4，但对软段的微区半径及间距影响较大，随着软段含量的增大，软段微区的半径r1和间距d1都增大。

The aim of this study was to develop a novel amphiphilic functional block poly(ε-caprolactone) bearing ketone groups MPEG-b-P(OPD-co-CL. 2-oxepane-1, 5-dione was copolymerized with ε-caprolatone in which methoxy poly (MPEG, Mn=5 000) and stannous octoate were used as initiator and catalyst, respectively. The syntheses were conducted by bulk and solution polymerization. 1H NMR results showed that peak position and splitting of the polymers synthesized through solution polymerization were consistent with theoretical data, demonstrating the products were designed block copolymers. While in the bulk polymerization, polymer peak position was changed due to their high reaction temperature, suggesting their structural variation.

将带有羰基官能团的4-羰基己内酯和ε-己内酯分别在甲氧基聚乙二醇(MPEG，Mn=5 000)为引发剂，异辛酸亚锡为催化剂溶液和本体体系中开环聚合，合成了两亲性侧基带有羰基官能团的聚己内酯嵌段共聚物MPEG-b-P(OPD-co-CL.1H NMR结果表明采用溶液聚合法合成的聚合物各峰的峰位置和分裂情况与理论一致，证明了产物是实验所设计的嵌段共聚物，而采用本体聚合法合成的聚合物由于温度的影响，聚合物各峰的峰位置发生了变化，说明其结构发生了变化；差示扫描量热法分析结果表明随着OPD单体含量的增加，聚合物的熔点，玻璃化转变温度和熔融焓增加；热失重测试结果表明OPD单体的引入增加了聚合物的热敏感性。

The electric conductivity of solid polyiodides increases largely as the aggrandizement of polyiodide anions"polymerization degree. The solid polyiodides have excellent sterilizing effects and the effect of tetra-n-butyl ammonium undecaiodide is the best of them, and the sterilizing effects increase as the aggrandizement of polyiodide anions" polymerization degree. The sterilizing effects of resinic polyiodides increase as the aggrandizement of polyiodide anions polymerization degree, the heptaiodide resinic polyiodide has better sterilizing effects than the triiodide and pentaiodide.

固体高聚碘系列化合物的电导率随着高聚碘阴离子聚合度的增加而增加，并且增幅较大；固体高聚碘对常见细菌均具有很好的杀灭作用，并且随着高聚碘阴离子聚合度的增加，杀菌能力也随着增强，其中正四丁基十一碘化铵杀菌剂的效果最佳；树脂高聚碘随着高聚碘阴离子聚合度的增加，杀菌能力增强，碘七树脂高聚碘的杀菌效果要明显好于碘三树脂和碘五树脂高聚碘。

For VC suspended emulsion polymerization initiated by potassium persulphate, the initial polymerization rate is proportional to 133 and proportional to RpJ0 72, where

以 KPS为引发剂进行的 VC悬浮态乳液聚合，基本上是在隔离的小水滴内进行的，类似于乳液聚合机理，但齐聚物自由基的相转移可以引发少量的单体相聚人采用优化的聚合工艺条件，得到转化率大于70％、颗粒仍由基本不熔结的初级粒子组成、吸油率为 19。

The relationship of the amounts of emulsifier, organosilicon monomer (D4) and initiator with the ratio of fluorescence intensity between first vibronic peak of pyrene (λ= 373 nm) and third vibronic peak of pyrene (λ=384nm)Ⅰ1/Ⅰ3 were discussed during the emulsion polymerization process, in which pyrene was used as fluorescence probe. The polymerization behavior of the organosilicon-acrylate latex with core-shell structure was investigated in line with the relationship of monomer conversion and development of morphology in latex particles with the value of Ⅰ1/Ⅰ3 for probe pyrene during the polymerization process.

以芘为荧光探针，探讨了有机硅-丙烯酸酯核壳乳液聚合过程中，芘的第一振动峰(373nm处)与第三振动峰(384nm处)荧光强度的比值Ⅰ1/Ⅰ3与乳化剂、有机硅单体（D4）和引发剂用量之间的关系，并结合聚合过程中探针芘的Ⅰ1/Ⅰ3 峰值与单体转化率及乳胶粒形态演变之间的关系，研究了核壳结构有机硅-丙烯酸酯乳液的聚合行为。

The infection of the reaction rate of the virous monomers was reviewed respectively by the different THF dosage, TMEDA dosage, t-BuOK dosage, t-AmOK dosage and different temperature. The monomers apparent reaction rate constant was obtained.And the polymer composition at different conversion was reviewed, too.The effect of modifier and temperature on heat effect was also studied. In addition, the sequence structure and microstructure of the terpolymer was reviewed at different modifier dosage, and the structure was characterized by the ~1H—NMR.

分别考察了不同THF、TMEDA、t-BuOK、t-AmOK加入量以及聚合温度对各单体及总的反应速率的影响规律，得到了各单体及总的表观反应速率常数，求得了不同转化率下各单体在共聚物中的分布情况，同时考察了调节剂加入量对聚合温升热效应的影响规律；研究了在三种聚合体系下，通过~1H—NMR对共聚物的结构进行了表征，分别考察了不同调节剂加入量对共聚物的序列结构及微观结构的影响规律。

Furthermore, by using two-colored probes to study the relationships between RNA polymerase Ⅲ and RNA polymerase I, we observed that the signals of the two RNA polymerase were very close.

同时，应用这一研究方法对RNA聚合酶Ⅰ的转录发生在核仁中的结论进行了确证，并进而应用双探针标记荧光原位杂交的方法对RNA聚合酶Ⅲ和RNA聚合酶Ⅰ转录位点的关系进行了初步探讨，结果显示两者的转录位点之间非常接近，并且有伴随发生的趋势。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。