官能团

The extraction equilibrium constants of Nd , Eu , Am in the system of seven monoacidic organophosphorus compounds dodecane 1. 0mol/l NO〓are reported. The dependency of the extractability on the PO〓function group、bonding charactor、metallic ion species and the structure of substitute has been examined.

给出了七个烷基磷酸的正十二烷熔液从1.0mol／lNO〓水溶液中萃取Nd、Eu、Am的平衡分配常数Kex，考察了萃取剂PO〓官能团、萃合物成键特性、金属离子及取代基结构与萃取性能间的关系，发现了：（1）可运用取代基自由能加和模型预测辛基膦酸辛基酯对La、Eu、Nd、Am等三价离子的平衡分配数据。

Surface activity of alkaline lignin was improved by alkylation with dodecyl bromide at 170 ℃,3 h.

碱木质素因其分子上缺乏亲油亲水性均较理想的官能团，而在有机相和水相中的溶解度均不高，表面活性也很差[1] 。

The synthesis, characterization and polymerization of a new cyclic 6-(N-isopropyl acylamine ethylidene)-ε-caprolactone were reported.

研究了官能团化新型己内酯单体的合成及其与丙交酯无规共聚物的降解性能。

The variation of total gas pressure also influences the deposition rate, optical band gap and extinctive coefficient of amorphous silicon film.

傅立叶红外光谱分析了在KBr衬底上沉积的非晶硅薄膜的官能团信息，说明衬底温度和气体压强变化影响了薄膜中的氢含量改变。

We prepared a serious of functional polymers with RAFT method.First we synthesize a tri-block polymer.One end is hydrophobic PMMA and the other end is hydrophilic PtAA,the middle is the functional epoxy group,which can be fluorinate by CF_3COOH.

本文运用RAFT方法合成了一系列不同链长比例的三嵌段共聚物：聚—聚—聚(PMMA-b-PGMA-b-PtBMA)，然后利用GMA中含有的环氧官能团，合成含氟的一段，最后将PtBMA一段酸解为亲水段PtAA，即形成了双亲双憎的嵌段共聚物。

The gelable fiber has at least two acidic groups and at least two gelable functional groups.

胶凝纤维具有至少两个酸性基团和至少两个胶可凝官能团。

The OH functionality of the polyether may be controlled by using modifiers such as glycidol, ethylene glycol, water or trimethylol propane

用缩水甘油、乙二醇，水或三羟甲基丙烷等改良剂，可控制聚醚的羟基官能团。

The OH functionality of the polyether may be controlled by using modifiers such as glycidol, ethylene glycol, water, or trimethylol propane

可用缩水甘油，乙二醇，水或三羟甲基丙烷等改良剂，可控制聚醚的羟基官能团。

The glycidol is protected by ethyl vinyl ether first to form 2,3-epoxypropyl-1-ethoxyethyl ether, then polymerized or copolymerized with EO by initiation with the mixture of diphenylmethylpotassium and triethylene glycol to give the well-defined poly.

得到的聚合物用甲酸水解去保护，并在二氧六环和甲醇的混合溶剂中用氢氧化钾溶液皂化后，得到了聚合物链的侧端挂有羟甲基官能团的线形聚醚linear Polyglycidol和poly。

A series of novel chrome-free tanning agent s were synthesized from urea,glyoxal,glycine and melamine.

合成了六种新型的同系列的无铬鞣剂；用红外光谱分别证实了它们带有的官能团的存在；并采用氨基酸分析来初步研究这些无铬鞣剂的鞣制机理。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。