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Ewa Andrzejewska 《Polymer International》2017,66(3):366-381
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
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使用3种可聚合乳化剂制备了水基胶粘剂用丙烯酸酯乳液。考查了可聚合乳化剂与单体间的共聚性能,比较了各乳化剂用量对丙烯酸酯乳液的固含量和单体转化率、乳液稳定性(聚合稳定性、贮存稳定性、冻融稳定性)以及乳胶膜的耐水性等性能的影响。结果表明,乳化剂1-烯丙氧基-3-(4-壬基苯氧基)-2-丙醇聚氧乙烯(10)醚(ANPEO10)、烯丙氧基壬基酚聚氧乙烯(10)醚双磷酸(ANPEO10-P2)和烯丙氧基壬基酚聚氧乙烯(10)醚硫酸铵(DNS-86)均成功地聚合到丙烯酸酯聚合物中。用3种乳化剂制备的乳液性能各有特点。使用DNS-86以及ANPEO10-P2制得的乳液的贮存稳定性好;用ANPEO10制得乳液的冻融稳定性最好;使用DNS-86制得的乳胶膜的耐水性最好。3种乳化剂用量均为2.0%时,制得的乳液综合性能最好。 相似文献
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以丙酮为溶剂,分别采用丙酸(AS)、磷酸(H3PO4)以及2-丙烯酰胺基-2-甲基丙磺酸(AMPS)中和甲基丙烯酸-N,N-二甲基胺基乙酯(DMAEMA),然后减压蒸馏去除溶剂,合成了3种可聚合离子液体DMAEMA-AS/H3PO4/AMPS,采用差示扫描量热(DSC)表征其玻璃化温度(Tg)。以过硫酸铵(APS)为引发剂,以N,N-亚甲基双丙烯酰胺(MBAM)为交联剂,甲基丙烯酸-2-羟基乙酯(HEMA)分别与3种可聚合离子液体在水溶液中交联共聚,合成了Poly(HEMA-co-DMAEMA-AS/H3PO4/AMPS)凝胶,采用重量法研究了3种凝胶的溶胀行为。结果表明,DMAEMA-AS/H3PO4/AMPS的玻璃化温度分别为-61.9℃、76.2℃、-45.8℃,Poly(HEMA-co-DMAEMA-AS)和Poly(HEMA-co-DMAEMA-H3PO4)凝胶可在水及多种有机溶剂中溶胀,而Poly(HEMA-co-DMAEMA-AMPS)凝胶在任何溶剂中均不溶胀,并初步探讨了产生这种现象的原因。 相似文献
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以甲基丙烯酸二甲氨基乙酯(DM)和环氧氯丙烷(ECH)为主要原料,合成了一种活性体O-甲基丙烯酰-氧乙基二甲基环氧丙基氯化铵(ODEAC)。采用单因素实验分别讨论了反应溶剂、反应温度、物料比及反应时间对产物的转化率和环氧值的影响,确定了最佳合成工艺为:反应温度60℃,反应溶剂为异丙醇,物料比n(ECH)∶n(DM)=1∶1.6,反应时间4 h,在该条件下目标产物的转化率可达91.67%。并采用傅里叶变换红外光谱仪(FTIR)和核磁共振波谱仪(1HNMR)对产物结构进行了表征。 相似文献
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The copolymerization of styrene or methyl methacrylate with 1,8‐naphthalimide dyes to yield fluorescent side‐group copolymers was investigated. During copolymerization, no changes occurred in the chromophoric systems of the dyes. Colorimetrically, it was found that more that 0.90% of the dyes were chemically bonded to the polymer chain. The effect of polymer coloration was proven by appropriate coloristic characterization. © 2001 John Wiley & Sons, Inc. J Appl Polym Sci 81: 2463–2470, 2001 相似文献
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Atomic force microscopy (AFM) was used to directly observe and characterize a polymer‐modified mica surface prepared using a polymerizable gemini surfactant. Normal tapping mode and contact mode AFM were used to image the treated mica surface morphologies in air and liquid environments, respectively. The root mean square (RMS) roughness of mica surfaces before and after surface modification and polymerization was analyzed from these scans. To determine the effect of styrene adsolubilization on the surfactant‐modified mica, AFM measurements of the modified mica were made at various styrene concentrations. Contact angle measurements were also made to further characterize the nature of the surfactant‐modified mica surface. The surface morphology and surface hydrophilicity were observed to be different for the modified mica after polymerization. In addition, the polymerized surface maintained its morphology after washing/desorption studies demonstrating the stability of the polymerized surfactant film. © 2009 Wiley Periodicals, Inc. J Appl Polym Sci, 2010 相似文献
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乳液涂料中表面活性剂的研究进展 总被引:2,自引:0,他引:2
本文综述了近年来国内外有关聚合物乳液以及乳液涂料中表面活性剂(主要是乳化剂)的研究与发展动向,论述了乳化剂在聚合物乳液和乳液型涂料体系中的作用、表面活性剂在涂料组分中的竞争吸附现象,介绍了新型反应性表面活性剂的开发和应用。 相似文献
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