阳离子P（BA—St—MBDM）共聚物乳液的合成及其抗静电性能

以丙烯酸丁酯（ＢＡ）、苯乙烯（Ｓｔ）和甲基丙烯酰氧乙基，二甲基，丁基溴化铵盐（简称ＭＢＤＭ、（ＣＨ２＝ＣＣＨ３－ＣＯＯＣＨ２Ｎ（ＣＨ３）２－ｎＣ４Ｈ９）＾＋Ｂｒ＾－）为共聚单体，Ｎ－甲基－Ｎ－十六烷基吗啉硫酸甲酯盐作乳化剂进行自由基型乳液聚合，研究了影响聚合速度、共聚物［η］和乳液稳定性的因素，合成了一系列稳定的阳离子共聚物乳液。所得乳液经稀释后对不同织物进行处理，处理后的织物具有良好的抗静电性和     

氨烃基/三氟丙基聚硅氧烷增深剂的红外表征与应用性能

在碱性催化剂作用下,用1,3,5-三(三氟丙基甲基)环三硅氧烷(DF3)与N-β-氨乙基-γ-氨丙基甲基二甲氧基硅烷等进行开环聚合反应,合成了N-β-氨乙基-γ-氨丙基甲基硅氧烷/三氟丙基甲基硅氧烷共聚物(AFSO).用红外光谱对其结构进行了表征.将其乳化后配成织物增深剂,分别用于黑色、蓝色全棉织物的处理,其增深率分别达到24.7%和13.2%,且织物的柔软性能明显提高.     

新型两级介质阻挡放电降解甲基橙的机理研究

采用新型两级介质阻挡放电(DBD)等离子体反应器对甲基橙废水进行降解处理,考察了甲基橙的p H值、电导率、降解率、化学需氧量(COD)随停留时间的变化。采用紫外光谱、红外光谱、液质联用对处理前后的甲基橙废水进行检测,并推测甲基橙降解机理。结果表明:甲基橙废水的p H值随着停留时间的增长而减小,电导率和降解率均随停留时间的增长而增大,甲基橙的COD值随停留时间的增长呈现先减小再升高最后降低趋于平稳的规律;经过表征分析,处理160 min后的甲基橙降废水中含有NO_3~-,HOOCCH_2CH_2CH_2CH_2CH_2SO_3~-,(CH_3)_2NCH_2CH_2CH_2CH_2CH_2COOH等。     

由碘原子官能化共聚物、含有该共聚物的组合物和处理方法

正共聚物的官能化的至少一端由一个碘原子(包括至少两个不同的单体((甲基)丙烯酸单体及其盐类)),是新的,(在(甲基)丙烯酸单体(甲基)公式CH_2=CHCOOR或CH_2=C(CH_3)COOR,(甲基)     

改性苯乙烯-丙烯酸酯防水防油剂的研究

以甲基丙烯酸十二氟庚酯(FM)、丙烯酸丁酯(BA)、苯乙烯(St)、甲基丙烯酰氧乙基三甲基氯化铵(DAC)、丙烯酸十八酯(ODA)为原料,采用无皂乳液聚合,制得了阳离子含氟丙烯酸酯多元共聚物乳液,并对聚合物的结构、组成进行了表征,研究了引发剂、FM的用量对乳液耐水性和稳定性的影响。单独使用含氟乳液对纤维类织物进行表面涂敷,水和油滴在织物上所成的接触角最大可分别达到135°和87°,同时织物的抗张强度、耐折度、平滑度分别提高13.45%、15.38%和60.52%。     

丙烯酰胺/DBMA反相共聚物乳液粒子形态及大小的研究

阳离子型聚丙烯酰胺共聚物具有广泛的用途 ,本文以 SPAN80作为乳化剂 ,偶氮二异丁基脒盐酸盐 ( AIBA )作为引发剂 ,通过反相乳液聚合合成了丙烯酰胺 /N ,N -二甲基 N -丁基 -N -甲基丙烯酰氧乙基溴化铵 ( DBMA)反相共聚物乳液。研究了 DBMA用量、乳化剂用量 ,引发剂用量及反应条件等对反相共聚物乳液粒子形态及大小的影响。结果表明 ,反相共聚物乳液粒子的形态呈规整性球状结构 ,其大小随反应条件的不同而发生变化     

由碘原子官能化共聚物、含有该共聚物的组合物和处理方法

正由新制的碘原子(包括至少两个不同的单体((甲基)丙烯酸单体及其盐)官能化的至少一个末端的共聚物),(在(甲基)丙烯酸单体(甲基)化学式CH_2=CHCOOR或CH_2=C(CH_3)COOR,(甲基)丙烯酰胺公式CH_2=CHCONR_4R_5或CH_2=C(CH_3)CONR_4R_5;(甲基)丙烯酸;和碳酸溶液中至少有一个终端可聚合的(甲基)丙烯酸组)。R为1~30碳的烷基(任选被一个或多个杂原子O,N,S或P),烷基     

丙烯酸丁酯_St_甲基丙烯酰氧乙基正十六烷基二甲基溴化铵无皂乳液共聚合

考察了季铵盐单体的乳化能力、甲基丙烯酰氧乙基正十六烷基二甲基溴化铵（Ｃ１６Ｎ＋）用量等对丙烯酸丁酯－苯乙烯－Ｃ１６Ｎ＋共聚物乳液性能的影响,测定了共聚物乳液的抗静电性能。结果表明,共聚物乳液具有优良的抗静电性能,处理的合成纤维织物经５次水洗后,其放电半衰期均不大于２～３ｓ。     

PP织物的亲金属离子功能化改性

利用低温等离子体技术改善聚丙烯(PP)织物的亲金属离子性。采用氧气等离子体预处理PP织物使其表面引入活性官能团,预处理后的PP织物在三羟甲基丙烷三[3-(2-甲基氮丙啶基)丙酸酯](TTMAP)的交联作用下与螯合剂三乙烯四胺(TETA)或聚乙烯亚胺(PEI)进行接枝反应,以提高PP织物的亲金属离子性。结果表明:在交联剂TTMAP的作用下,等离子体处理后的PP织物可接枝螯合剂TETA或PEI;适宜的接枝反应条件为交联剂质量分数15%,等离子处理后的PP织物在70℃下0.04 mol/L螯合剂PEI溶液中反应2 h,接枝率达1.43%;接枝改性PP织物的亲金属离子性明显提高,PP织物的吸湿性和染色性能也得到改善。     

P(NIPA/AMPS)接枝改性UHMWPE织物的性能

通过氩微波低温等离子体引发、紫外辐射聚合将N-异丙基丙烯酰胺(NIPA)和2-丙烯酰胺-2甲基丙磺酸(AMPS)的二元共聚物[P(NIPA/AMPS)]接枝到超高相对分子质量聚乙烯(UHMWPE)织物,研究了织物的温敏性、pH敏感性及成孔剂CaCO3的加入对其响应速度的影响。结果表明,在紫外光照射强度一定时,AMPS浓度、交联剂浓度是影响织物接枝率的主要因素。优化的接枝工艺条件为AMPS质量分数50%,交联剂质量分数5%,等离子体处理时间6 m in,处理功率240 W。该织物最低临界共熔温度约为38℃,其溶胀比随温度、pH值变化而变化,且其温敏性吸水-失水动力学曲线呈现快速响应性。该织物的湿态静水压为1 500 Pa,干态透气性为482 L/(m2.s),干态透湿性为2 010 g/(m2.d),吸水后具有很好的阻水性能,干态后仍保留了一定透湿、透气性。     

Preparation and characterization of styrene acrylate emulsion surface sizing agent modified with rosin

A series of core‐shell type cationic soap‐free latex were prepared by using styrene(St), butyl acrylate(BA), and methyl methacrylate(MMA) as main materials and introducing rosin as the functional monomer. Cationic starch (CS‐8), which has low relative viscosity, was used as the emulsifier and dispersant. The influencing factors of the reaction were studied and the optimal conditions were achieved. Then the products were characterized by scanning electron microscope (SEM), FT‐IR, laser particle sizer, and particle charge detector (PCD). The results showed that the excellent performance and good sizing effects of SAE were achieved when the reaction conditions were as follows: the starch amount was 8 wt %, the charge of the initiator (APS) was 0.5%, and the amount of rosin was 2 wt %. Under these conditions, the particle size of the latex was around 100 nm and had a narrow distribution, and the charge density of latex was 0.61 mmol L^?1. The water‐resistant performance of paper was improved significantly when SAE was modified with rosin, and the Cobb value decreased by 46.8% compared to that of the paper sized by SAE without rosin. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2011     

阳离子型及两性絮凝剂现状与发展方向

阳离子型高分子絮凝剂及两性絮凝剂具有许多优点,近年来得到国内外学者的广泛重视和开发应用。本文通过对几种阳离子型高分子絮凝剂及两性高分子絮凝剂的介绍,分析了它们的发展现状与方向。     

Dralon异形腈纶染色热力学研究

选用阳离子蓝X-BL、阳离子红X-GRL、阳离子黄X-5GL 3种染料,对Dralon异形腈纶的染色机制进行了研究,绘制了3种阳离子染料上染Dralon异形腈纶的吸附等温线,测定了Dralon异形腈纶的染色热力学参数,为Dralon异形腈纶及其产品的染色提供一定的理论支持,有利于促进Dralon异形腈纶的进一步开发。     

St-BA-BVP无皂共聚物阳离子乳胶粒大小及形态研究

合成阳离子共单体 1-丁基 ,4 -乙烯吡啶溴化铵 ( BVP) ,并以偶氮二异丁基咪盐酸 ( A IBA)作引发剂 ,制备苯乙烯 /丙烯酸丁酯 ( St/ BA )共聚物乳液 ,通过 TEM研究改变 BVP的浓度、St/ BA主单体的配比及单体加料方式对 P( St/ BA / BV P)乳胶粒大小形态的影响 ,结果表明批量法和单体全滴加法制备的乳胶粒形状规则、分布均匀、半连续法制备的乳胶粒子呈多分散分布 ,粒径相差很大 ,且 P( St) / P( BA)得到的乳胶粒呈明显的核壳结构。     

Preparation and full characterization of cationic latex of styrene-butyl acrylate

Cationic latexes based on styrene and butyl acrylate using cetyl trimethyl ammonium bromide (CTAB) as surfactant were carried out using both batch and semicontinuous emulsion polymerization. Monomer conversion, particle size and its distribution, ζ potential, latex surface tension were determined as function of CTAB levels. Evolutions of these properties were followed, and the results from batch compared to those from semicontinuous process. It was revealed that polymerization rate in batch process was enhanced with CTAB, and the polymerization rate was controlled by addition rate of the preemulsion in semicontinuous process. Molecular adsorption area of CTAB on latex particle surface was calculated, which showed clearly that ζ potential and surface tension in the latex were directly related with surfactant adsorption on the particle surface. The molecular surface adsorption area of CTAB on latex particle could be used to explain the evolution of latex properties such as ζ potential and latex surface tension.     

Research progress on the preparation and application of monodisperse cationic polymer latex particles

This review is focused on the features, preparation and applications of uniform cationic polymer latex particles, as well as on the formation mechanism of uniform latex particles. Substantial progress in the size and shape control of polymer latex particles has been made using several methods such as dispersion polymerization, conventional emulsion polymerization, surfactant‐free emulsion polymerization and seeded emulsion polymerization. Uniform cationic polymer latex particles have wide applications such as drug carriers, diagnostics, templates and additives. However, two major problems are the inhomogeneous size and low surface charge density, which limit further functionalization and the application of cationic polymer latex particles. Finally, the future trends and perspectives are described. Copyright © 2012 Society of Chemical Industry     

用于可再分散乳胶粉的阳离子苯丙乳液的合成

采用种子乳液聚合法,以十六烷基三甲基溴化铵(CTAB)为乳化剂,偶氮二异丁眯盐酸盐(AIBA)为引发剂,引入亲水性阳离子单体甲基丙烯酰氧乙基三甲基氯化铵(DMC)及功能性单体丙烯酰胺(AM)〔m(DMC)∶m(AM)=1∶1〕来制备用于可再分散乳胶粉的阳离子苯丙乳液。探讨了聚合反应温度、乳化剂用量、引发剂用量、种子单体用量、阳离子单体用量等对乳液及可再分散乳胶粉性能的影响。确定最佳配方和工艺条件为:聚合反应温度为(80±2)℃、DMC添加量为2%(以主要聚合单体质量计,下同)、CTAB用量为2%(以单体总质量计,下同)、AIBA用量为0.53%(以单体总质量计,下同)、种子单体用量为10.0%(以单体总质量计,下同)。在该工艺条件下,合成的阳离子苯丙乳液粒径大小和分布适中、性能稳定,由其所制得的可再分散乳胶粉含水率低、平均粒径小、再分散性优良。     

阳荷性天然乳胶的制备

本文选择一种阳离子表面活性剂为制取阳荷性天然胶乳的稳定剂,直接把天然胶乳与这种表面活性剂的溶液混合,制取阳荷性天然胶乳,拓宽了天然胶乳的应用范围。     

护发用品添加剂阳离子蛋白吸附性的初步研究

阳离子蛋白是目前比较浒的护发添加剂之一,它对头发有较强的亲和性,能起到很好的修复受损头发及柔软、改善梳理性等作用,本文应用Ｌｏｗｒｙ’ｓ蛋白测定法对不同条件时阳离子蛋白在头发上的吸附作用进行了初步研究,得出了作用时间、阳离子蛋白浓度、非阳离子化及不同类型阳离子化蛋白反及基质对阳离子蛋白吸附性的影响等结果。     

Preparation and Characterization of Soap-free Cationic Fluorinated Poly-styrene-acrylate Latex with Core-shell Structure

Soap-free cationic fluorinated Poly-styrene-acrylate latex particles with core-shell structure were synthesized by seeded semi-continues emulsion polymerization in the presence of water soluble cationic monomer Methacryloxyethyltrimethyl ammonium chloride (MADAC) and using ethanol as co-solvent. The effects of MADAC dosage and ethanol content on the stability of polymerization process and the properties of the latex particles were studied. The chemical component of the polymer was analyzed by Fourier transform infrared (FTIR). The surface element composition of the prepared copolymer film was analyzed by X-ray photoelectron spectroscopy (XPS), the micro-structure of the prepared latex particles were observed by transmission electron microscopy (TEM). The result shows that cationic soap-free fluorinated poly-styrene-acrylate emulsion with a core-shell structure can be prepared when monomer DAMAC is 6.0 wt% and ethanol is 7.5 wt%.