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1.
摘要:综述了近年来有关聚合离子液体的合成、性质和应用研究进展,重点介绍了聚合离子液体结构与性能的关系。通过离子液体单体的可控聚合或对聚合物前体进行修饰等方法,能够获得具有特定结构的功能性聚合离子液体。聚合离子液体具有优良的离子导电性和良好的力学性能及加工性能,在电池材料、吸附分离、生物和催化等诸多领域具有广阔的应用前景。  相似文献   

2.
摘要:超支化聚合离子液体(HPILs)拥有特殊的三维空间结构,从而表现出独特的化学和物理性质,引起了研究者的广泛兴趣。对HPILs领域的最新研究进展进行了总结,重点介绍了HPILs在热固性材料改性、金属纳米材料制备、聚合物电解质制备、工业废水净化、超分子体系制备等方面的应用。此外,对HPILs的发展前景进行了展望。  相似文献   

3.
聚合离子液体(PILs)是一种特殊聚电解质,兼具聚合物和离子液体(ILs)特性。根据PILs组成和结构的变化,它可以是固体、液体或凝胶状软物质,目前已成为ILs和介孔聚合材料领域的前沿研究方向之一。本文简要回顾了ILs的特性、潜在应用及其设计和应用过程中面临的挑战,分析了PILs概念提出的必然性,综述了PILs的主要合成方法、ILs单体的种类以及PILs性质和多尺度结构的调控方法,指出未来PILs的研究方向应集中在如下几个方面:PILs的新合成路线、产品的系统表征(如相对分子质量、链段结构、微/介观结构、机械强度和机械加工性等)以及PILs的组成-结构-性质关系,为面向特定应用的PILs材料的设计提供理论指导。  相似文献   

4.
李欢  刘依农 《化工进展》2020,39(2):513-520
离子液体催化剂具有易分离、可回收、能循环使用等优点,在α-烯烃聚合领域表现出巨大的潜力。本文首先介绍了离子液体的基本物化性质,简述了离子液体催化α-烯烃聚合的反应机理。之后以阳离子结构为基础,详细回顾了路易斯酸型离子液体在α-烯烃聚合反应中的应用,并对其催化活性和产物性质进行了分析。最后,对新型类离子液体催化剂的研究也进行了总结。从报道的结果来看,离子液体催化剂和类离子液体催化剂都已经能够实现较高的产物转化率,但是产物的选择性有待提高,仍然需要更多的实验探索。尽管短时间内还无法取代传统催化剂,但它们已经表现出巨大的应用前景,是未来的研究热点之一。  相似文献   

5.
离子液体的研究进展   总被引:1,自引:0,他引:1  
离子液体作为一种新型的绿色物质,具有众多优异的物理化学性质,可通过合适的分子设计调节阴阳离子合成特殊性能离子液体,具有广阔的应用前景。在此,对离子液体作为溶剂和电池电解质两个方面的研究进展做一简要综述,同时对离子液体应用研究中存在的问题和今后的研究方向作一简单探讨。  相似文献   

6.
随着对离子液体研究的深入,离子液聚合物IF成为新的研究热点.简单综述了近年来聚合离子液的合成方法,主要包括自由基引发聚合、辐射聚合以及与其他物质共聚等.其中,自由基引发聚合操作简便,易于监测,是目前制备聚合离子液体的常用方法.  相似文献   

7.
锂电池离子液体电解质的研究进展   总被引:1,自引:1,他引:1  
余碧涛  李福燊  仇卫华 《化工进展》2004,23(11):1195-1198
离子液体具有电导率高、热稳定性好、无污染、蒸气压极低等特性,是非常有希望应用于锂电池或电化学电容器的电解质。本文介绍了离子液体电解质体系在锂电池中的研究以及聚合物电解质一离子液体体系的研究进展。  相似文献   

8.
微波辅助离子液体法合成聚合松香   总被引:2,自引:0,他引:2  
以特级松香为原料,以自制的离子液体[bmim]Br/ZnCl2作为溶剂和催化剂,在微波辐射下,进行松香聚合反应。通过单因素实验,确定最优反应条件为:松香与离子液体[bmim]Br/ZnCl2的质量比1∶2.5,离子液体中[bmim]Br和ZnCl2的摩尔比1∶2,反应温度60℃,反应时间1 h。在该条件下得到的目标产物的质量指标都达到聚合松香的国标要求。该离子液体易于与反应产物分离,且可以循环使用4次。  相似文献   

9.
乔晋忠 《辽宁化工》2010,39(12):1215-1216,1301
甲基丙烯酸甲酯和苯乙烯经4,4’-偶氮-双(4-氰基戊酸)引发,分别在离子液体([C4mim][PF6])和苯中进行了自由基聚合反应,比较了相同引发剂和单体投料比下,2种介质体系中的聚合速率、相对分子质量和分子量分布,得出2种单体在[C4mim][PF6]中的聚合速率、相对分子质量明显高于苯中的产物,且[C4mim][PF6]经多次重复使用,均能得到性能稳定的聚合产物。  相似文献   

10.
采用两步法合成了3种不同阳离子侧链长度(烯丙基和乙烯基)及不同阴离子种类(硫酸根和三氟甲基磺酸)的可聚合酸性离子液体,对其进行了表征. 结果表明,3种离子液体符合理论设计结构特点,且分解温度都在200℃以上;离子液体的催化活性不仅与其阴离子结构有关,还与其侧链长度有关. 将1-磺酸丁基-3-乙烯基咪唑硫酸氢盐聚合固载到改性凹凸棒土表面,在反应温度65℃、甲醇与油酸摩尔比6:1、固载催化剂用量0.7 g [固载率为36%(w)]的条件下,反应5 h后油酸甲酯产率可达58%,重复4次后酯化产率仍达33%以上,且催化剂易分离回收.  相似文献   

11.
离子液体是一类新型的软功能材料或介质,具有优良的可设计性。它作为一种绿色溶剂,具有很多独特的物理化学性能。本文介绍了离子液体在自由基聚合反应、活性聚合反应、电化学聚合等高分子合成反应方面的应用。  相似文献   

12.
    
A coordinating ionic liquid (IL), 1‐[(diethyl amine)amine]ethyl‐3‐methyl imidazolium chloride ([N3MIM]Cl), was prepared as an alternative to a simple organic ligand to coordinate to copper(I) bromide (CuBr). We, thereby, obtained a novel catalyst for atom transfer radical polymerization (ATRP) reactions. This catalyst was applied to the ATRP of methyl methacrylate in the IL 1‐allyl‐3‐methyl imidazolium chloride ([AMIM]Cl). The chemical structures of the ILs obtained were confirmed by Fourier transform infrared spectroscopy, mass spectrometry, and 1H‐NMR analyses. The coordination ability of [N3MIM]Cl was assessed by cyclic voltammetry, and the redox potential of [N3MIM]Cl–CuBr was ?0.507 V. The [N3MIM]Cl–CuBr complex was expected to be a markedly more active catalyst than the amine DETA–CuBr complex. The coordination mode toward CuBr was also examined. The [N3MIM]Cl–CuBr catalyst system showed good controllability in the aforementioned ATRP reaction in [AMIM]Cl. The Cu catalyst was easily separated from the obtained polymer with the coordinating IL as a ligand. Consequently, the coordinating IL overcame the shortcomings of traditional organic ligands, such as poor compatibility with IL media and poor separation of the catalyst from the polymer; this makes it highly promising for applications in the ATRP field. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017 , 134 , 45484.  相似文献   

13.
    
Polymerized ionic liquids (PILs) having guanidinium cations with different counter‐anions, such as PF6? and N(CF3SO2)2? (TFSI?), were synthesized by copolymerization of a guanidinium ionic liquid monomer with methyl acrylate followed by an anion exchange reaction. Furthermore, incorporating a guanidinium ionic liquid, LiTFSI salt and nano‐size SiO2, a quaternary gel polymer electrolyte based on one of the PILs as the polymer host was prepared. The quaternary gel polymer electrolyte was chemically stable even at a higher temperature of 80 °C in contact with the lithium anode. In particular, the electrolyte exhibited high lithium ion conductivity, wide electrochemical stability window and good lithium stripping/plating performance. Li/LiFePO4 batteries with the quaternary gel polymer electrolyte at 80 °C had capacities of 140 and 130 mA h g?1 respectively at 0.1 and 0.2 C current rates. Copyright © 2011 Society of Chemical Industry  相似文献   

14.
    
Ionic liquids (ILs) are low‐melting organic salts often liquid at room temperature, whose unique properties are the reason of increasing interest for their applications as solvents, reaction media and functional additives. The exceptional properties of ILs have proved to be particularly useful in polymer science giving the potential to produce polymeric materials with improved properties or to immobilize ILs in polymer matrices while keeping their special characteristics. One of the possibilities is polymerization in ILs which can also affect positively polymerization reactions. An especially attractive technique is photopolymerization due to the ease of process control, short reaction time and ambient working temperature. This review gives a literature survey of developments in photopolymerization processes carried out in ILs as well as applications of these processes. It covers both the photopolymerization in ILs as well as photopolymerization of IL monomers. The first part presents a short overview of physicochemical and photochemical properties of ILs; it includes also photochemical reactions and photoinitiation of polymerization in ILs. The second part covers both the basic research (kinetics of photopolymerization including polymerization rate coefficients and polymerization of IL monomers) as well as applications of UV‐induced polymerization in ILs. © 2016 Society of Chemical Industry  相似文献   

15.
纤维素接枝反应的研究进展   总被引:2,自引:0,他引:2  
纤维素是世界上最丰富的天然可再生资源。离子液体是一种新型的绿色溶剂,在纤维素的均相接枝研究中正起着越来越重要的作用。文章介绍了纤维素接枝反应尤其是均相接枝反应的研究进展。  相似文献   

16.
离子液体/聚合物电解质研究进展   总被引:1,自引:0,他引:1  
综述了离子液体/聚合物电解质最新的研究进展--在有机高分子上引入离子液体合成聚合物电解质的几种主要方法.并介绍了合成的聚合物电解质的一些主要性质及其在催化、导电材料等方面的应用前景.  相似文献   

17.
    
Itaconic acid (IA)–choline chloride (CC) deep eutectic solvents (DES) were prepared and characterized by NMR, TGA, and DSC. Poly(itaconic acid–co–bisacrylamide) hydrogels were synthesized by in situ polymerization‐crosslinking of the DES. For comparison, the hydrogels were also prepared in water under the same process conditions, that is, temperature, time, initial concentration of the monomer, the initiator, and N,N′‐methylenebisacrylamide (BAA) as the cross‐linking agent. Chemical structure of the polymers was proved by elemental analysis and FTIR. The values of insoluble gel fraction and water swelling of obtained hydrogels suggest that polymers prepared in DES have higher cross‐link density. Preliminary comparative studies of polymerization of IA in water and in DES medium indicated higher polymerization rate resulting from the presence of the choline salt, what might explain properties of the hydrogels prepared in DES. This study shows that DES can be used both as a solvent and catalyst in free‐radical polymerization processes. © 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014 , 131, 40608.  相似文献   

18.
A new porous polymeric microparticle, poly[4-vinylbenzyltriethylammonium chloride] (P[VBTEA][Cl]), is prepared from the crosslinking polymerization of 4-vinylbenzyltriethylammonium chloride with N,N-methylenebisacrylamide via inverse suspension polymerization using cyclohexane as continuous phase, Span 80-Tween 80 as dispersant, and PEG600 as porogen. Two other microparticles, P[VBTEA][BF4] and P[VBTEA][PF6] are further obtained through ion-exchange. FT-IR, TGA, SEM, and EDS analyzes indicate that these microparticles have good porosity (apparent porosities are 55.0%, 69.7% and 64.3%, respectively), high thermal stability, and large specific surface area, which make them potentially applicable as adsorbent agents. Their CO2 adsorption–desorption performance is investigated. It is observed that such porous polymeric microparticles present high CO2 sorption capability; typically, the CO2 sorption of P[VBTEA][PF6] is 1.38 wt% at 25 °C and 1 bar. Such porous polymeric microparticles are good candidates for CO2 adsorption.  相似文献   

19.
周剑  薛腾  唐二军  袁淼 《化工学报》2016,67(Z2):171-175
在氯化1-烯丙基-3-甲基咪唑([AMIM]Cl)离子液体中,采用原子转移自由基聚合(ATRP)技术,以CuBr/乙二胺为催化体系,合成了分子量分布窄的聚甲基丙烯酸甲酯(PMMA)分子。探索了聚合反应条件对PMMA分子量大小及分布的影响。通过GPC对PMMA分子量大小及分布进行测试,结果表明,在[AMIM]Cl离子液体体系中的ATRP反应,反应时间是控制PMMA分子量大小主要因素,而催化体系是控制PMMA分子量分布宽窄的决定性因素。通过优化反应条件可以设计聚合物分子量的大小和分布,可以实现对聚合物分子量的精确控制,使合成的聚合物材料满足在化工医药中的特定应用。  相似文献   

20.
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