polydispersity

polydispersity

1. Measurement of molecular weight and polydispersity of polymers by GPC

GPC测定聚合物分子量及分子量分布

2. The result showed that the hyperbranched polyester had narrow molecular weight distribution,its molecular weight distribution become wider and polydispersity rised when the generations increased.

GPC的结果表明:随着代数的增加,超支化聚酯的分散指数增加,相对分子质量分布加宽,聚酯的实测相对分子质量与理论相对分子质量的差越来越大。

3. Lee-TY, Yu-CY, Hsu-MY, Wang-SJ, Ting-C, and Shih-KC, “Resin with low polydispersity index, and preparation”, U.S. Pat. 2005032997.

“具较低聚合度分布性之树脂、制造方法及其用途”,中华民国专利申请案号92121346.

4. Keywords Propylene polymerization;Multiscale model;Molecular weight distribution;Polydispersity index;Melt index;

丙烯聚合;多尺度连贯模型;分子量分布;多分散性指数;熔融指数预报;

5. Keywords polyvinyl acetate;acrylic acid;polydispersity index;churn-dasher;

乙酸乙烯酯;丙烯酸;分子量分布;搅拌装置;

6. The influence of phase elasticity on polydispersity of multiple emulsions

介质弹性对多重乳液分散度的影响

7. Keywords Monodispersed cross linking polystyrene microsphers;Particle size;Polymerization rate;Polydispersity;Polymerization stability;Post addition method;

关键词单分散交联聚苯乙烯微球;微球粒径;粒径分布;聚合速率;聚合稳定性;后滴加法;

8. Keywords Gel Permeation Chromatography;Poly（p-phenylenesulfide）;Moleclar Weight;Polydispersity;Moleclar Weight Distribution;Chracterization;

凝胶渗透色谱;线性聚苯硫醚;摩尔质量;多分散系数;摩尔质量分布;测试表征;

9. Gel permeation chromatography (GPC) results show that G-PMMA has a higher molecular weight and a wider polydispersity than those of homopolymerized PMMA.

凝胶渗透色谱分析表明：碳酸钙表面接枝的PMMA相对分子质量大于MMA水相均聚物，而且分子量分布较均聚物宽；

10. Keywords Molecular weight;Polydispersity index;Standard deviation;

分子量;分子量分布指数;标准偏差;

11. Molecular weight polydispersity

分子量分布

12. Keywords Breadth parameter of molecular weight distribution;Polydispersity;Average molecular weight;Probability statistics;

分子量分布宽度指数;分子量多分散性;平均分子量;概率统计;

13. molecular weight and polydispersity

分子量及其分布

14. The effect of heating time and desalting process on the diameters of nano-alumina and their polydispersity

加热与脱盐对纳米氧化铝粒度及分布的影响

15. Keywords Dynamic light scattering;Polydispersity;Microemulsion;Diffusion coefficient;

动态光散射;多分散性;微乳液;扩散系数;

16. Weight average relative molecular mass, polydispersity and gel permeationchromatograms during the degradation process were obtained.

发现聚合单元为随机分布的壳聚糖样品，其降解是均匀的；

17. Molecular weight, polydispersity and structure were measured and results showed that molecular weight increased with time but after 1.5h the increase was not obvious;

发现聚合物分子量的增长在1.5小时后趋于平缓，升高温度有利于获得高分子量和较窄分布的聚合物，聚合物结构基本为线性。

18. Keywords polydispersity;polymers;adsorption layer thickness;MC simulation;

多分散性;高分子;吸附层厚度;计算机模拟;

19. Keywords polydispersity ethylene-propylene block copolymer;polymer blending;polymer toughening;polymer alloy;

多分散性乙丙嵌段共聚物;聚合物共混;聚合物增韧;聚合物合金;

20. polydispersity index

多分散指数

21. The mechanism of crude viscosity reduction is summarized and discussed.Wax crystal aggregate under the magnetic field can increase the polydispersity in suspension.

对原油磁化降粘的机理进行了总结和探讨,认为磁致颗粒团聚及磁场作用下分子有序排列是降粘的主要原因。

22. In this work the effects of microspheres mean diameter, polydispersity, and polymer degradation on drug release rate from poly(lactide-co-glycolide) (PLG) microspheres are described.

微球大小对药物释放率有很重要的影响，人们认为可以改变其大小以建立一个药物释放符合需要能够控制药物释放的体系。

23. A Little about Average Molecular Weight and Polydispersity of Polymer in Teaching

有关聚合物平均分子量和分子量多分散性的教学点滴

24. Keywords Living radical polymerizatiion;Atom transfer radical polymerization;Molecular weight;Molecular weight polydispersity;Conversion;

活性自由基聚合;原子转移聚合;分子量;分子量分布;转化率;

25. Keywords alkyl glucoside;styrene;microemulsion polymerization;polydispersity;

烷基糖苷;苯乙烯;微乳液聚合;多分散度;

26. It is found that the presence of regulators affects the equilibrium value of polydispersity index of polymers.

用已内酰胺开环缩聚反应进行了实验验证。

27. It is of significance to determine the molecular mass and polydispersity of polysaccharide,which could influence pharmacological activities of polysaccharide.

由于多糖的分子质量对其活性有很大的影响,因而需要测定其分子质量。

28. The influence of APG0810 concentration,initiator concentration and salt concentration on particle size and polydispersity of polystyrene has been discussed.

着重研究了表面活性剂浓度、引发剂浓度以及无机盐浓度对产物粒径和多分散度的影响。

29. The additive mass and the accession rate of emulsifier have both effect on average size and polydispersity of the latex during seeded emulsion polymerizing.

种子乳液聚合中，补加单体的量、乳化剂的补加速度等对最终聚苯乙烯乳胶粒粒径和粒径分布均产生较大影响。

30. Keywords isotactic polypropylene;melt flow index;polydispersity index;degradation;crystallization;mechanical property;

等规聚丙烯;熔体流动指数;多分散指数;降解;结晶;力学性能;

31. Keywords self-condensing vinyl polymerization;hyperbranched polymer;scaling law;polydispersity exponent;

自缩合乙烯基聚合;高分子矩;标度律;多分散指数;

32. Keywords computer simulation;SCFT;polydispersity;block copolymer;self-assembly;

计算机模拟;自恰平均场理论;多分散性;嵌段共聚物;自组装;

33. The result also demonstrates that the primary factor resulting in flux decrease may not be higher organic MW, but polydispersity.

试验还表明，相对分子质量较大的有机物并非通量下降的主要因素，有机物的分散性可能是影响通量的主要因素。

34. The generated polymers exhibit good solubility in water, controlled molecular weights and narrow polydispersity.

这类高分子具有良好的水溶性，展现出分子量高度可控性和窄的分子量分布。

35. General expressions of molecular parameters, such as the number and the weight average degrees of polymerization and the polydispersity index, were derived.

重均分子量和多分散指数在稳态条件下的通解。上述通解普适于各种不同的两物种体系，只是通解中的系数随反应机理的不同而异。