分子的极性

因OP分子的极性头基团位于空腔外，加合物带有亲水性的极性端，有利于加合物在水溶液中的分散，提高了βCD加合物的溶解度。

The inclusion complex carries a polar head group of OP and its solubility greatly increases in aqueous solution .

结果表明，A段分子的极性、B段分子的柔性和分子量对该分散剂的性能有很大影响。

It is suggested that the polarity of polar group of block A and the flexibility and molecular weight of block B segment affect the dispersibility of TiO_2 / toluene system greatly .

本文研究了AB嵌段型WH-1颜料分散剂的合成及其对钛白粉的分散能力。结果表明，A段分子的极性、B段分子的柔性和分子量对该分散剂的性能有很大影响。

This paper reports the study of synthesis of WH-1 AB blocked pigment dispersant and its dispersibility for TiO_2.It is suggested that the polarity of polar group of block A and the flexibility and molecular weight of block B segment affect the dispersibility of TiO_2 / toluene system greatly .

结果发现，当包覆剂大分子的极性单体单元含量≈7%及Tg≥38℃，可获得粒径≤0.9mm的产物达99.5%以上；

The results showed that the product with particle diameter ≤ 0.9 mm accounted for above 99.5 % when the content of the polar monomer unit in the macromolecules of encapsulant s was about 7 % by mass and T g of encapsulant was equal to or above 38 ℃ .

乙醇的极性最强，对丁腈橡胶的腐蚀最为强烈，提出了燃料分子的极性力是造成含氧燃料腐蚀柴油机燃油橡胶管的观点。

Ethanol which had the strongest polar force corroded nitrile rubber most .

且取代基的吸电子能力愈强，分子的极性愈大。

The stronger the electron withdrawing ability of substituent R_1 and R_2 , the bigger the molecular polar is .

结果表明，物理老化可以减少聚合物系统的自由体积，使发色团分子的极性方向不易发生改变，从而提高了极化聚合物的取向稳定性；

The experimental results show that the physical aging is an important means for improving the orientational stability of poled film because it can effectively decrease polymer 's free volume and restrict the oriented polar molecules to rotate out of alignment .

之前有研究发现渗透剂对蛋白质的稳定能力与它的分子表面的极性基团表面积比例呈反比关系，但忽略了分子体积所代表的空间位阻效应的影响，因此存在一定误差。

There was a research before which found that the osmolyte stabilizing effect have negative correlations with the ratio of polar group surface area of their molecules . However , it failed to consider the molecular volume which could represent the steric exclusion effect , therefore had some deviations .

氨基酸残基与利福平分子之间的非极性相互作用的减弱是引起靶标与利福平结合能力变弱的主要因素，其中降低最为明显的为His526Arg和Ser531Leu突变体。

The loss of nonpolar interaction between amino acid residues and rifampicin molecule is the main factor to cause the reduced binding ability of RNA polymerase to rifampicin .

由于两亲分子有其特殊的极性头基，它在与离子的相互作用中，静电作用也是重要的一部分。

Because amphiphilic molecules have a polar head , the electrostatic interaction plays an important role on ions and film .

通过接枝共聚，在聚丙烯大分子上引入适当的极性基团或支链是聚丙烯亲水改性的一种简单而又行之有效的方法。

Graft copolymerization to introduce appropriate polar group or chain onto PP backbone is a simple and effective approach of hydrophilic modification .

利用液晶分子与聚酰亚胺分子的极性基团间的相互作用模型可以解释上述实验结果。

The experimental results have been explained by the model for the genaration of the pretilt angle between LC molecules and rubbed polyimide films .

从受精后卵子中总氮量减小推测细胞内水分子与含氮的极性生物大分子之间的作用减弱，这是T1值增大的主要原因之一。

The decrease of the nitrogen contents in eggs after fertilization suggests the Presence of a weakened interaction between the water molecules and the polar biological nitrogen-containing macromolecules . This weakened interaction is one of the important causes for the increase of T1 .

结果表明：分子参与空穴形成作用的能力以及分子的极性／偶极矩决定了多壁碳纳米管对化合物的吸附。

The results showed that the ability of cavity formation and the dipolarity / polarizability of molecules determined the adsorption onto MWNTs .

通过电子束辐照的方法，在高密度聚乙烯（HDPE）分子链上引入含氧极性基团，增加了HDPE分子的极性，改善了HDPE与PA6的界面相容性。

Some oxygen-containing groups ( mainly carbonyl group ) were introduced onto the molecular chains of HDPE through electron beam irradiation , the polarity of HDPE was increased and the compatibility between HDPE and PA6 was thus improved .

计算结果表明此类极性分子在特定偏压范围内表现出一定的整流效应，这一结果源于前线分子轨道与电极不对称耦合以及分子的极性这两个方面对分子输运性质的影响。

Theoretical results show that the rectifying effect appears in a specific bias voltage range , which originates from the frontier molecular orbitals asymmetrically coupling with two electrodes and the molecular polarity .