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ABSTRACT Poly (γ-glutamic acid) is an unusual anionic polypeptide that is made of Dand L-glutamic acid units connected by amide ...

聚谷氨酸是一种阴离子聚肽，由D-和L-谷氨酸单体通过α-NH〓和γ-COOH之间的酰胺键连接而成。

The composition comprises: 35 to 65 wt % of an anionic detergent or surfactant selected from alkyl benzene sulphonic acids, alpha olefine sulfonates, long chain fatty acid sulphates, higher fatty acids, as well as the alkali metal and alkaline earth metal salts thereof, and natural detersive agents, and mixtures of any of these; 3 to 15 wt % of a non-ionic detergent or surfactant selected from alkoxylated alkyl phenols and alkoxylated fatty alcohols; 5 to 10 wt % of a water-swellable cellulose derivative or a salt thereof, wherein the cellulose derivative exhibits a viscosity of at least about 1500 cps, measured in a 1 % aqueous solution at 25 DEG C with a Brookfield viscometer having spindle 3, speed 30rpm, factor 40 for viscosities of 2500-3500 cps; 6 to 20 wt % of a solubility regulator selected from alkali metal and alkaline earth metal chlorides, carbonates and sulphates, aluminosilicates and starch; and 0 to 20 wt % of a fragrance or perfume in solid, liquid or microencapsulated form.

该组合物包含：a35―65％重量的阴离子洗涤剂，其选自烷基苯磺酸、α－链烯烃磺酸盐、长链脂肪酸硫酸盐、高级脂肪酸以及其碱金属和碱土金属盐和天然的去污剂，和任何这些组分的混合物；b）3―15％重量的非离子洗涤剂，选自烷氧基化烷基酚和烷氧基化脂肪醇；c）5～10％重量的水可溶涨的纤维素衍生物或它们的盐，其中纤维素衍生物按1％水溶液在25℃下用Brookfield粘度计（3号转轴，转速30rpm，2500―3500cps粘度的因子是40测定；具有粘度至少约1500cps；d）6―20%重量的溶解性调节剂，选自碱金属和碱土金属氯化物、碳酸盐和硫酸盐、硅铝酸盐和淀粉；和e）0～20％重量的为固体、液体或微囊包封形式的香精。

An anionic phenol-formaldehyde resin which synthesized by phenol, formaldehyde and some amine compound such as diethylamine, triethylamine and diethylene triamine was studied in this paper, and this modified phenol-formaldehyde resin was used in papermaking as an intensifier.

本文通过苯酚、甲醛与胺类化合物(二乙胺、三乙胺、二乙烯三胺)反应，得到阴离子性的酚醛树脂，并研究了将改性的酚醛树脂作为造纸增强剂应用在抄纸过程中。

The effect of short chain monohydric alcohols (ethanol, n-butanol) and dihydric alcohols (ethyleneglycol, 1,4-butanediol) on the aqueous two-phase system of cationic and anionic surfactants is studied.

研究了短链一元醇和二元醇(乙二醇、1，4-丁二醇)对正负离子表面活性剂混合溶液(十二烷基硫酸钠-十六烷基三甲基溴化铵-水)双水相的影响。

Anionic surfactant sodium dodecyl sulfate can be used to enhance or regulate the EOF.

另外，在缓冲液中加入阴离子表面活性剂SDS可以调节电渗流的大小。

The SDS micellar-templated polymerization of aniline is strongly pH-dependent in this case. A wider range at low pH (1.0～4.0) was required to produce the conducting PANI, optimal pH was 3.0 and the transition from emeraldine salt to emeraldine base form of PANI occurred at about pH 10.4 in this anionic micellar system.

结果表明该反应具有明显的pH值依赖性， pH (1.0～4.0)是合成导电聚苯胺所必需的，其最适pH值为3.0，聚苯胺由导电的翠绿亚胺盐转变为本征态发生在pH 10.4。

This article reports a new kind of copolymer, non polar polar terpolymer : poly(styrene-butadiene-methyl methacrylate ) P(S-b-B-b-MMA prepared by anionic polymerization with n BuLi as initiator, 1,1 diphenylethylene as capping agent and lithium 2-(-methoxyethoxy) ethoxide as complex agent.

以正丁基锂为引发剂， 1 ，1-二苯基乙烯为戴帽剂， 2-(2-甲氧基乙氧基)乙氧基锂为络合剂，在环己烷、四氢呋喃混合溶剂中，采用阴离子聚合法，于－70℃～－40℃合成了非极性-极性的三嵌段共聚物聚苯乙烯-聚丁二烯-聚甲基丙烯酸甲酯，并借用GPC、1H-NMR、DSC、TEM、IR等仪器对共聚物进行了表征。

Different fluroescent organic nanoparticles from microemulsion were prepared with semi-continuous emulsion copolymerization of methyl methacrylate and a polymerizable anionic surfactant. The microemulsion containing FONs was used in an ink-printing process to form different patterns. The photoluminescence properties of the film were investigated.

利用微乳液法制备了有机纳米发光材料，对乳液的性能、成膜后的发光性能进行了分析测试，证明在聚合物体系中有机纳米发光纳米微粒得以均匀的分散，发光性能得以保证，并利用喷墨打印技术在柔性基板上打印出了设计图形，并对图形的成膜形貌、发光性能进行了分析测定。

Hyperbranched aliphatic polyethers with narrow molecular weight distribution have been prepared via anionic polymerization of glycidol with rapid cation-exchange equilibrium.

根据~(13)C-NMR谱图的积分结果，计算得到HPG的支化度为0.54，GPC测得的数均分子量为3265，分散度为1.48。

The properties of surface chemistry and micellar aggregation number of a special anionic surfactant with two hydrophilic head groups linked by a rigid structure- disodium hexadecyl diphenyl ether disulfonate (C16-MADS) was determined respectively.

测定了由刚性基团联接的特殊双亲水基型阴离子表面活性剂——十六烷基二苯醚二磺酸钠(C16- MADS)的表面化学性能及胶束聚集数，并考察了表面活性剂浓度和体系温度对Nm的影响。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。