吡啶基-羧基纤维的合成及其对Cu(Ⅱ)的吸附性能

以腈纶纤维(1)为基础骨架,经多胺交联、水解引入羧基和酰胺化反应接枝吡啶基合成了吡啶基-羧基两性纤维(3),其结构经IR和元素分析表征。对Cu(Ⅱ)的吸附性能研究结果表明:3对铜溶液不经pH调节即可达到良好的吸附效果,最大饱和吸附容量为133.7 mg·g-1,高于羧基纤维素。     

THE STUDIES ON CHELATING FIBER V．ADSORPTION BEHAVIOR OF Au^3＋ ONTO CHELATING FIBER CONTAINING AMIDOXIME GROUPS

The adsorption behavior of ionic gold onto chelating fiber containing amidoxime groups was investigated. The chelating fiber presents high adsorption capacity for ionic gold Au^3+（up to 626mg/g,when the content of amidoxime group reaches 7.59mmol/g),and possesses the ability to reduce the Au^3+ into metallic gold,In the redox process,the amidoxime group is oxidized into carboxyl group.     

Muscle‘s Motion in an Overdamped Regime

Based on the stochastic inclined rods model proposed by H.Matsuura et al., we study the motion of actin myosin system in an overdamped regime.Our model is composed of an inclined spring (rod),a myosin head and a myosin filament.The results of calculation show that the model can convert the random motion to one-directional motion,and the myosin head works as a resonator of random noise,which absorbs the energy through a stochastic resonance.The results show that the inclined rod and the intermolecular potential are very important for the system to move.     

THE STUDIES ON CHELATING FIBER—THE STUDIES ON THE AMIDOXIMATION OF POLYACRYLONITRILE FIBER

The amidoximation process of commercial polyacrylonitrile fiber was studied. The results showed that it is possible to prepare a chelating fiber, which present high adsorption capability to Au^3+ and reasonable mechanical property,by the amidoximation of PAN fiber,with the increase of reaction time or agent concentration,the coversion of CN group in PAN increases rapidly at first and then increases slowly.When the reaction temperature is higher than that at which the paracrystalline region in the fiber is destroyed, the conversion of CN group increases greatly,but the mechanical property of the fiber begins to be inferior.     

高效液相色谱荧光法快速检测人血浆及肌肉听谷氨酰胺

谷氨酰胺（ＧＬＮ）是肝脏糖异生的主要物质，同时又是肠粘膜细胞优先锋氧人，关许多代谢疾病中ＧＬＮ的需要量大大超出机体合成能力。导致血浆、肌细胞内ＧＬＮ浓度下降。ＧＬＮ蛋白质合成的减少、肠粘膜及免疫功能损伤有高度的相关性细胞内ＧＬＮ浓度的下降与病人的死亡率成正比。目前ＧＬＮ的测定多为酶法及全氨基酸谱分析法，这些方法在临床及研究中应用时既复杂费时，且成本较高。对此本文建立了一个快速简便灵敏的反相高效液相     

有机高性能Kevlar纤维表面改性研究

试图通过化学处理方法在Kevlar纤维表面引入活性基团 ,从而达到对Kevlar纤维进行表面接枝改性的目的。通过红外光谱分析方法研究了甲苯 2 ,4 二异氰酸酯 (TDI)接枝Kevlar纤维的反应 ,探讨了水解时间对其产物中—O—H基含量的影响 ;纤维水解对接枝反应 ,及其己内酰胺的封端处理对接枝产物的影响。结果表明 ,纤维水解后含有较多的—O—H基 ,且有利于接枝反应的进行 ;而己内酰胺的封端处理可以得到稳定化的接枝产物。证明了只要在纤维表面引入少数活性基团就会有效地改善纤维 /树脂界面的结合。     

CuS表面改性聚丙烯腈纤维的结构及导电机理的研究

研究了用一步反应法制备的CuS表面改性的聚丙烯腈导电纤维的微观结构、导电性和温度的变化规律及其导电机理,观察了CuS在纤维表面上的结晶态及晶型变化现象,证实了该导电纤维的以电子导电为主的导电机理。     

磷酸酯螯合纤维富集—AES测定微量镓和铟铟

研究了胺基膦酸酯螯合纤维对于微量Ga~(3 )、In~(3 )的吸附性能,确定了定量吸附和解脱酸度,讨论了吸附机理和共存离子的干扰。低浓度离子的吸附及废水样的分析亦获得了满意的结果。     

MACRO-KINETICS BEHAVIOR OF GOLD RECOVERY BY ACTIVATED CARBON FIBERS（ACFs)IN A FLUIDIZED BED

The recovery of Au by activated carbon fibers (ACFs) was carried out in a 40mm diameter,1200mm height fluidizedbed The rates of reaction of the functional fibers with Au3+ in the pureaurum solution and in the aurum-containing wastewater were measured respectively at the differentsolution fiow rates, and compared with the results under the static solution conditions. Experimentalresults indicated that the reaction rates in fluidization are notably higher than those in the static stateand increase with the increase of solution flow rate. It demonstrates that the thickness of theconcentration boundary layer is decreased and a uniform temperature field is established in the beddue to increasing of the turbulent extent with the relative fiber/solution velocity.