聚合的

Therefore, ammonium sulfate and PDMDAAC are selected as the dispersion medium and dispersant respectively, in order to obtain products with preferable fluidness. Studies show that, for ammonium sulfate, the optimum dosage is 27%-29%, and PDMDAAC is 10%-18%.

故选择硫酸铵与PDMDAAC分别作为盐水介质中CPAM分散聚合的分散介质与分散剂，并确定了硫酸铵最佳用量为聚合体系质量的27%~29%，PDMDAAC最佳用量为单体质量的10%~18%，该条件下制得的产品具有较好的流动性。

By comparing the data of the photopolymerization of methyl methaerylate at 30℃ with those of benzoyl peroxide initiated polymerization at 60℃,it clearly shows that primary radical termination is more important at lower temperature than at higher temperature.

比较甲基丙烯酸甲酯在30℃的光引发聚合和在60℃的过氧化苯甲酰引发聚合的数据，可以看出，初级自由基的终止效应在低温时更为重要。

The crystal structure of trioxane was accurately determinated. By using the crystal structure model of trioxane, the ring-opening polymerization mechanism of trioxane by γ-irradiation may be fairly well explained. Polyoxymethylene obtained by solid state polymerization of trioxane may have two types of molecular chains with different orientations, one parallel to the C...

我们精确测定了三聚甲醛的晶体结构，利用三聚甲醛晶体结构模型，可以很好地阐明三聚甲醛在受到γ射线辐照后开环聚合的机理，由三聚甲醛晶体固相聚合得到的聚三聚甲醛，应该有两种不同取向的分子链，一种与三聚甲醛的c轴平行；另一种与c轴成75°37′的交角。

The microstructure of polyethylene was investigated using the techniques of 〓C NMR, DSC, TREF, gas chromatography and isothermal extraction fractionation.

通过改变两种茂金属催化剂的摩尔比例及不同的聚合温度，考察了不同条件对乙烯聚合的催化活性和所得聚乙烯分子量及分子量分布的影响。

This paper contains three parts: 1 Synthesis of novel titanium complexes; 2 Polymerization behaviors of alkoxyl substituted Cp Titanocenes as catalysts for styrene syndiotactic polymerization; 3 Polymerization behaviors of alkenyl substituted Cp Lanthanocenes as Methyl Methacrylate polymerization catalysts.

中文题名新型茂钛、噁唑啉钛络合物的合成、表征以及茂钛、茂稀土络合物催化性能的研究副题名外文题名 Synthesis，characterization of novel Cp，oxazoline titanium complexes and polymerization behaviors of titanocenes and lanthanocenes 论文作者张浩导师钱延龙黄吉玲学科专业应用化学研究领域\研究方向金属有机与均相催化学位级别博士学位授予单位华东理工大学学位授予日期2003 论文页码总数148页关键词金属有机化学稀土络合物噁唑啉类钛络合物茂钛络合物馆藏号BSLW /2003 /O627 /27 本论文包括三部分内容：1）有机金属钛络合物的合成；2）烷氧基取代茂钛络合物催化苯乙烯间规聚合的研究；3）烯基取代茂稀土络合物催化甲基丙烯酸甲酯聚合的研究。

A conjugation small molecule containing both 3T moiety and diacetylene moiety is synthesized. It will be interesting to investigate the potential application in FET of the cubic organic semiconductor formed by topology polymerization.

合成了含有三聚噻吩(3T)和可引发拓扑聚合的双炔官能团的小分子光电材料，成膜后引发拓扑聚合形成&体型&聚合物半导体材料，探讨它在场效应管中的应用将是很有意义的工作。

For the production of reactive polyurethane cross-linkinger and curing agents,2,4-diisocyanate toluene terpolymer,which possesses the rigid structures of hexatomic ring and three reactive functional groups,was synthesized and characterized by the Fourier transform infrared,the gel permeation chromatography and the chemical analysis methods.

结果表明采用Cat-3作催化剂，在(60±2)℃下反应，可制得分子量为530~550，Mw/Mn=1.10，NCO质量分数为(25.0±0.5)%窄分子量分布的TDI三聚体；随着反应时间延长，TDI会进一步多元聚合生成多聚结构；而加入质量分数为0.4%的苯甲酰氯作为稳定剂，可有效抑制多元聚合的发生，所制备的TDI三聚体稳定性可在半年以上

Under the experimental conditions of polymerization temperature at 25℃, n/n of 1:1, c of 0.03mol/L, the nanocomposite of polyaniline/monmorillonite was prepared by intercalative polymerization.

在聚合温度为25℃，蒙脱土质量含量为苯胺的0.5%，过硫酸铵和苯胺的摩尔比为l：1，掺杂剂磺基水杨酸摩尔浓度为0.03mol/L的实验条件下，运用插层聚合的方法制备出PAn-MMT复合纳米材料。

In 2000, Nishida et al synthesized the PPDO whose molecular weight could reach 142,000 but the monomer conversion could only reach 79.4% by using stannous octoate as catalyst with co-initiator under conditions that T = 100oC, M/I = 4900, t = 20 h, in 2000, the enzymatic polymerization of PDO was carried out at 100oC for 15 hours using 5wt% immobilized lipase CA by Nishida et al.

这主要是因为PDO的结构相对稳定，开环聚合要比GA、LA、CL困难一些，而且用于PDO开环聚合的催化剂体系单一，主要集中在Ti， Zr， Sn， Ld， La， Yb， Hg等重金属，然而这些重金属作为副产物，不容易从PPDO中分离出来，阻碍了PPDO作为医用材料的应用，这也造成了PPDO的成本昂贵。

The mechanical properties of BMI casts polymerized with AIBN catalyst were poor than that of with radiation.

用AIBN引发聚合的树脂的力学性能不如辐射聚合的树脂的性能。

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。