嵌段共聚物

He reported this could be improved by forming a block copolymer.

他提出，这个缺陷是可以通过形成嵌段共聚物改善的。

It was found that addition of 1-butanol reduced the critical micellization temperature of PEO-PPO-PEO in aqueous solution.

实验结果表明，正丁醇的加入急剧地降低嵌段共聚物的临界胶团温度。

DSC,thermogravimetry analysis and circular dichroism were used to study the thermal and optical properties.

利用差示扫描量热法、热失重分析以及圆二色谱研究了嵌段共聚物的热性能和旋光性能。

The secondary structure was investigated by Circular Dichroism .

利用圆二色性技术研究了嵌段共聚物在溶液中的二级结构。

By utilizing this concept, highly ordered mesoporous silica SBA-15 materials with low microporosity have been synthesized under low temperature and low surfactant concentrations; the quality of resulted mesostructure or pore size distribution can be greatly improved in the cases of EO〓BO〓EO〓, EO〓BO〓EO〓, EO〓BO〓EO〓, EO〓BO〓EO〓, EO〓PO〓EO〓 and EO〓PO〓EO〓 block copolymers.

利用盐效应，在低温或低模板剂浓度条件下合成出高度有序、微孔孔容小的介孔分子筛SBA-15；大大提高了利用嵌段共聚物EO〓BO〓EO〓，EO〓BO〓EO〓，EO〓BO〓EO〓，EO〓BO〓EO〓，EO〓PO〓EO〓和EO〓PO〓EO〓等导向合成介孔材料的有序度或孔径分布。

We usedit as the macroinitiator,(copper monochloride/pentamethyldiethylenetriamine as thecatalyst), to initiate the atom transfer radical polymerization of Fx-14, thus weobtained a fluorine and silicone containing triblock copolymer.

以此聚合物为原子转移自由基聚合中的大分子引发剂，引发含氟单体Fx-14进行原子转移自由基聚合，得到了含氟、含硅的三嵌段共聚物。

Multi block copolymer poly p phenylene vinylene co poly(ethylene oxide(PPVEO200 and PPVEO600) was synthesized by Wittig reaction.

通过经典的Wittig反应，成功合成了聚对苯亚乙烯和2种分子量聚氧化乙烯的多嵌段共聚物(PPVEO200和PPVEO600)。

Under proper volume fraction, the neutral nanoparticles may not influence the final morphology and the nanoparticles will localize at the interfaces between two blocks.

中性纳米粒子不会对相分离产生影响，而会集中分布在嵌段共聚物相分离的界面上。

For the symmetric diblock copolymers, the cross sections of the confining channels are of different shapes including regular triangle, square and ellipse.

对于对称双嵌段共聚物，研究中涉及的纳米孔截面包括正三角形、正方形和椭圆形。

In this paper, the effects of processing and heat treatment of terephthalate/polyte-traoxymethylene block copolymer on their dynamic mechanical temperature spectra were studied.

本文首先研究了成型方法和热处理对聚对苯二甲酸乙二酯与聚氧四亚甲基嵌段共聚物动态力学温度谱的影响，结合应力-应变曲线讨论了微相分离与力学性能的关系。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。