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In this paper, a unique and updated technique was applied to obtain an acid dyeable copolymer of acrylonitrile by solution polymerization of acrylonitrile, and a kind of alkaline monomer F (N,N‐dialkylaminoethylacrylate). Azodiisobutyronitrile (AIBN) was used as initiator to prepare the copolymer in sodium sulfocyanate aqueous solution. The effect of initiator concentration on the polymer's molecular weight and conversion during polymerization was studied. The relation between concentration of the alkaline monomer F and the polymer conversion, as well as the relation between concentration of the alkaline monomer F and the % dye‐uptake of the copolymer are discussed. The influence of pH was also researched. The structure of the copolymer was characterized by IR and NMR. The copolymer has excellent acid dyeable characteristics. 相似文献
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以两端溴化的聚9,9-二己基芴作为大分子引发剂, 6-O-甲基丙烯酰基-1,2∶3,4-二-O-异亚丙基-D-吡喃型半乳糖(6-O-Methacryloyl-1,2∶3,4-di-O-isopropylidene-D-galactopyranose, MaIpGa)为单体, 氯化亚铜/1,1,4,7,10,10-六甲基三乙基四胺为催化剂, 通过原子转移自由基聚合(ATRP), 合成了一种新型的具有良好光学性能的三嵌段共聚物聚甲基丙烯酸羟基保护半乳糖酯-聚芴-聚甲基丙烯酸羟基保护半乳糖酯(PMaIpGa-PF-PMaIpGa). 在酸性条件下进一步水解, 得到水溶性的聚甲基丙烯酸半乳糖酯-聚芴-聚甲基丙烯酸半乳糖酯(PMaGa-PF-PMaGa)三嵌段聚合物, 其结构和分子量(分布)通过核磁共振、红外光谱和凝胶渗透色谱(GPC)确证, 并研究了其紫外-可见和荧光光谱特性. 相似文献
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Novel Fluorene-based Conjugated Copolymer Containing Cyclobutenedione Unit for Light Emitting Diodes
QiangPENG YanHUANG ZhiYunLU PingZOU MingGuiXIE 《中国化学快报》2004,15(4):482-485
A novel fluorene-based conjugated copolymer containing cyclobutenedione unit was synthesized by Suzuki reaction.Its structure and properties were characterized by FTIR,^1HNMR,elemental analysis,PL spectroscopy,DSC,TGA and cyclic voltammetry.The resulting polymer shows strong yellow PL emission(561nm)and good solubility in polar aprotic solvents,i.e.THF,DMF,DMAC,DMSO,etc.DSC and TGA studies reveal that the novel polymer possesses excellent thermal stability with high glass transition temperature of 127℃ and onset decomposition temperature of 411℃.Cyclic voltammetry measurement demonstrated that the polymer has both hole and electron-transporting property. 相似文献
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聚芳醚酮是一种新型热塑性耐高温高分子材料,具有优异的力学性能、电性能、抗辐射性能等,特别适合作高性能复合材料的基质及超级工程塑料,关于聚芳醚酮已有多篇文章报道,而基于C-N偶合反应合成的聚芳醚酮报道甚少[1],我们曾报道含氮杂环聚醚酮酮PPEKK的合成[2].本文以1,4-二(4-氯代苯甲酰基)苯,4,4′-二氟二苯酮及4-(4-羟基苯基)-2,3-二氮杂 萘-1-酮为原料,合成了主链中含有C—N键的新型含氮杂环聚芳醚酮三元共聚物 (PPEKEKK),对共聚物的结构和性能进行了表征. 相似文献
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合成了聚姜黄素-二硫键-聚甲基丙烯酸二乙胺基乙酯-聚磺酸甜菜碱(Cur-DA-ss-PDEA-PS,或简写为Cur-ss-PDEA-PS),采用核磁、红外对聚合物结构进行了表征,用示差扫描量热法测试了聚合物热性能.用溶剂挥发法制备聚合物胶束,形成了聚磺酸甜菜碱为亲水壳层、聚姜黄素为疏水核、二硫键作为还原敏感基团和聚甲基丙烯酸二乙氨基乙酯为p H敏感基团的胶束.用荧光分光光度计测定了临界胶束浓度,动态光散射以及扫描电镜对胶束结构及性质进行了表征.结果显示,胶束稳定性良好,粒径分布较窄,且具有p H敏感性和还原敏感性.胶束载药量及包封率测试结果显示,相比于聚己内酯为内核的聚合物胶束,聚姜黄素的引入提高了胶束对药物的封装效果. 相似文献
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A soluble thiophene copolymer having polar and non polar side groups was synthesized and its photovoltaics performance was investigated. The synthesized copolymer was characterized using Nuclear Magnetic Resonance (NMR) and optical spectroscopy. Dye sensitized solar cells were fabricated using this copolymer as sensitizer. An open-circuit voltage of 0.50V, a short-circuit current density of 1.195 mA/cm2 and an overall power conversion efficiency of 0.3% were measured. 相似文献
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SynthesisandCharacterizationofMulti-block(β)±butyrolactone(BL)-ethyleneOxide(EO)CopolymerCHENXian-hai(NSFBiodegradablePolymer... 相似文献
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Synthesis and Characterization of Amphiphilic Block Copolymer Containing PVP and Poly(5-benzyloxytrimethylene carbonate) 总被引:2,自引:0,他引:2
Ying Xia WANG Feng HE Ren Xi ZHUO* Key Laboratory of Biomedical Polymers of Ministry of Education Department of Chemistry Wuhan University Wuhan 《中国化学快报》2006,17(2)
Amphiphilic block copolymers have attracted great interest recently, especially for thebiomedical uses1, . The hydrophilic blocks improve the biocompatibility of copolymer, 2while the hydrophobic blocks enhance the mechanics of the material and providever… 相似文献
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含规整聚环氧乙烷枝链的聚硅氧烷的合成及表征 总被引:3,自引:0,他引:3
以萘钾为引发剂,二甲基亚砜为溶剂制备了以烯丙基为末端基的聚环氧乙烷大单体,并利用末端双键的硅氢化反应合成了相对分子质量规整的聚环氧乙烷接枝聚硅氧烷的共聚物。产物经萃取精制后,用IR、 ̄1HNMR等方法进行了表征。 相似文献
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丙烯腈在聚丙烯上接枝共聚 总被引:1,自引:0,他引:1
丙烯腈在聚丙烯上非均相接枝共聚,得杨梅形氰基树脂。研究了接枝共聚条件对单体转化率和接枝率的影响。表观聚合速度可表示为,碰撞频率因子和聚合活化能分别是1.36×1011s-1和99.2kJ.mol-1。从光学显微镜观察到改性树脂在水中接枝连束的分布状态。丙烯腈和二乙烯基苯在聚丙烯上接校共聚,再经二甲苯率取,得笼形氰基树脂。二乙烯基苯在单体中的相对含量对树脂的溶胀性能和笼孔尺寸有很大的影响,制取功能材料时应予适当调节。扫描电镜照片展示了笼形树脂的笼腔和网络结构形态。 相似文献
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本文通过Heck偶联法制备一种新型p-/n-掺杂型电致发光材料--3-十二烷氧基噻吩-共-1,3,4-噁二唑交替聚合物(P3DDOTV-OXD), 用核磁共振(1H NMR)及凝胶色谱(GPC)对结构进行了分析表征。用紫外光谱(Uv-vis)、荧光光谱法及电化学分析法对其光电学性能进行了研究。结果表明:聚合物的重均分子量为:5287,在氯仿溶液中,聚合物的紫外最大吸收波长为314nm,在401nm处发射出明亮的蓝光;较其均聚物(516nm)蓝移了115nm。 循环伏安测定结果表明: P3DDOTV-OXD在正、负向区域分别出现了一对氧化还原峰对,电子亲和能(Ia)为:2.88eV,有利于电子从阴极的注入。3-十二烷氧基噻吩-共-噁二唑交替共聚物实现了集空穴、电子双向传输为一体的高性能的聚合物光电功能材料的性能要求。 相似文献