两性离子

在强酸性、弱酸性和碱性溶液中，吸附态的甘氨酸分别主要以阳离子、两性离子和阴离子形式存在。

FT-IR results showed that in the strongly acidic , weakly acidic , and basic solutions , the glycine exists in the form of cation , zwitterion , and anion , respectively .

对咪唑-1-乙酸中性分子和两性离子分别在气相及水溶液中（采用SCRF模型）进行了从头算，探讨了溶剂和基组对体系几何结构和相对稳定性的影响。

Ab initio calculations have been performed for both the neutral form and zwitterion of imidazol1ylacetic acid in the gas phase and in aqueous solution ( using SCRF model ) .

阴离子-两性离子表面活性剂复配体系及NaCl对其表面活性的影响

Mixed system of anionic and zwitterionic surfactants and the effects of NaCl on surface activity

强酸弱碱型两性离子交换纤维的制备I.苯乙烯和4-乙烯基吡啶的接枝共聚

STUDIES ON THE PREPARATION OF STRONG ACIDIC-WEAK BASIC AMPHOTERIC ION EXCHANGE FIBER I. the grafting copolymerization of styrene and 4-vinylpyridine onto polypropylene fiber

两性离子聚合物FZ367和XY27是钻井液强抑制性处理剂。

The amphoteric polymer FA-367 and XY-27 are additives with highly inhibitive character .

此外氨基酸型两性离子表面活性剂也具有一定的环境响应行为，改变pH影响了头基的电性，从而引起气液界面性质的差异。

The environmental-response character of zwitterionic surfactant has also been determined . The electrical properties of surfactant head group change from cationic to anionic with pH values varied from acidic to basic , resulting in different molecular behavior at gas-liquid interface .

PAM产品主要形式有水溶液胶体、粉状及胶乳三种，根据聚合物所带的电荷又可将PAM系列分为以下四类：非离子型、阴离子型、阳离子型和两性离子型。

The product modality PAM are mainly divided into colloidal , powdery and emulsive , it can also be classified by its ions carried , i.e. non-ion , anion , cation and amphoteric ion .

钻井液用两性离子共聚物HTB的合成与其性能研究

Synthesis and Evaluation of Amphoteric Copolymer HTB as a Drilling Fluid Additive

产物的结构通过1HNMR和元素组成分析，表明两性离子表面活性剂C、H、O、N的分析值与理论计算值偏差不超过0.3%。

Structures of products were identified by ~ 1H NMR and elemental analysis , which showed that the mass variations of contents of C , H , O , N in the four products with that of formula were less than 0.3 % .

AD-1两性离子共聚物的合成和应用

Synthesis and Application of AD-1 Zwitterionic Copolymer

耐温抗盐两性离子磺酸盐聚合物CPS-2000的合成

Synthesis of CPS-2000 Amphoteric Sulfonic Terpolymer with Heat Resistance and Tolerance to Salt

现场应用表明，该体系表现出类似MMH钻井液特殊的流变性和类似于两性离子聚合物的强抑制性和低的滤失量。

Application on the well sites shows it has similar rheologic property as MMH drilling fluid , similar strong inhibition and low filtrate volume as multifunction ionic polymer drilling fluid .

通过对两性离子聚合物及磺化体系泥浆的转化实验发现：AB－1能显著提高转化水泥浆的流变性，并能抗盐、抗碱。

Through the conversion experiments of the amphoteric ionic polymer and sulfonated system mud , it is found that AB 1 can make the rheologic property of the converted cement slurry obviously raised and has salt resistant and alkali resistant properties .

PVA活化买来酸酐/苯乙烯共聚物时四面体两性离子中间体不稳定，使酐基直接开环而得到块状交联凝胶，由此提供了一种制备PVA改性凝胶的简单方法。

In the activation process of maleic anhydride / styrene copolymer , however , the tetrahedral zwitterions structure was unstable and made the anhydride group opened directly to form bulk hydrogel , providing a simple method for preparing PVA - modified hydrogel .

在所使用的3种防塌钻井液中，KCI两性离子聚磺钻井液对泥页岩的抑制作用为最好。

In 3 type of anti & sloughing drilling fluid used in the test , the KCI amphoteric polysulfonate drilling fluid exhibits the best shale inhibiting effect .

室内实验评价了两性离子聚合物（AD-1）作为酸液稠化剂的性能，评价标准参照中华人民共和国石油天然气行业标准（SY/T6214-1996）。

In the indoor experiment , the zwitterions copolymer is estimated as gelling agent in acidizing fluids . Evaluation standard of viscosifier refers to the People Republic of China petroleum natural gas profession standard ( SY / T6214-1996 ) .

两性离子聚合物泥浆高温流变性能的实验研究

Experimental study on rheological properties of AMPHOTERIC-ION-POLYMER mud at high temperatures

两性离子聚合物泥浆在长庆油田的应用

The Application of Amphoteric Polymer Drilling Fluid in Changqing Oil Field

两性离子/阴离子表面活性剂复配体系协同作用的研究

Study of Cooperative Effect of Mixed System of Zwitterionic and Anionic Surfactants

两性离子为流动相离子色谱法测定常见有机酸探讨

Research for detecting organic acids by ion chromatography with zwitterions

两性离子聚合物交联稠化酸的制备及其性能研究

Preparation and performances of zwitterion polymer cross linked gelled acid

两性离子交换树脂吸附L-苹果酸热力学研究

Study of malic acid thermodynamics with amphoteric ion-exchange resin

抗非特异性蛋白吸附两性离子聚合物表面的制备、优化及应用

Preparation , Optimization and Application of Nonfouling Zwitterionic Surfaces

高温高压对两性离子聚合物钻井液体系流变性的影响

Influence of high temperature and high pressure on rheological property of amphoteric polymer mud

两性离子磺酸盐聚合物处理剂CPS-2OOO研究

Development of the amphoteric sulfonated polymer additive CPS-2000

钻井液用两性离子聚合物降滤失剂的研究

Filtrate reducer of zwitterionic polymer for drilling fluid

两性离子降粘剂AMTA性能研究

Study on properties of amphion thinning agent

然而两性离子共聚物降失水剂的不足之处在于抗温能力。

But the A shortcoming of zwitterionic copolymer filtrate reducer is the low temperature resistance .

无机盐对两性离子聚合物在粘土表面吸附的影响

The Effect of Inorganic Salts on the Adsorption of Amphoteric Ion Polymer on Clay Surface

两性离子聚合物调剖剂的合成与应用

Synthesis and Application of Zwitterion Polymer Blender