Synthesis and Characterization of Quaternary Complexes Ln ( CH2 ClCO0 ) 2 ( NO3 ) ( phen)

Many trinary lanthanide complexes have been studied. However, few mixed anion complexes with bidentate heterocyclic amines were synthesized. We synthesized mixed anion complexes Ln ( CHi CICO0 )2 (NO3) (phen) which was determined by elemental analyses. The IR spectra analyses indicate that NO3 ,CH2 C1CO0- and phen are coordinated with Ln. The molar conductances of the complexes at 10-3 mol. L-1 were founded to be between 32.4 and 35.8 S. cma@mol- 1 , suggesting the nonelectrolytes in N Dimethylformamide. And we determined the fluorescent spectra Eu(CH2C1COO)2(NO3) ( phen ) and ESR spectra of Gd( CH2 ClC00 )2 ( NOs ) ( phen ) .     

聚乙烯基吡咯烷酮的加入对制备聚丙烯腈原纤维的影响

研究了聚乙烯基吡咯烷酮(K30)的二甲基亚砜(DMSO)溶液的质量分数、聚乙烯基吡咯烷酮与聚丙烯腈(PAN)的质量比对浆料的纺丝性能以及浆料的流变性能的影响,同时对加入K30后的聚丙烯腈原纤维的力学性能和热性能进行了研究.结果表明,聚乙烯基吡咯烷酮与聚丙烯腈具有较好的相容性,当K30的质量分数为5%和m(PAN)∶m(K30)=7∶3时最适合纺丝,且原纤维具有较好的形貌和力学性质.     

SYNTHESIS AND CHARACTERIZATION OF THE MIXED LIGAND COORDINATION COMPOUND FROM RARE EARTH CHLORIDE AND THE NEUTRAL LIGANDS CONTAINING NITROGEN

The method of synthesizing ternary solid mixed ligand complexes from 1,10-phenanthroline, 2,2'-bipyridyl is reported. The series of complexes have been characterized by elemental analysis, infrared spectra, DSC-TGA analyses and molar conductivity. The results agree with the general formula LnL_1L_2Cl_3·nH_2O (Ln=La,Pr,Nd,Sm, Eu; Gd, Dy, Er, Tm, L_1=phen, L_2=bipy, n= 1,2,3).     

蒙脱土纳米复合材料的制备及其在棉织物阻燃整理中的应用

采用类原位聚合法制备了硬脂酸酰胺蒙脱土纳米复合材料(EBS/MMT),并用X射线衍射(XRD)和傅里叶红外光谱((FT-IR))对复合材料进行表征,证实所得产物为插层型蒙脱土纳米复合材料.复合后蒙脱土层间距由1.32nm增加到1.78nm(蒙脱土质量分数为8%)和1.81nm(蒙脱土质量分数为5%).通过将蒙脱土纳米复合材料和高聚磷酸铵(APP)复配制得新型膨胀阻燃体系,并用制备的阻燃整理液对纯棉织物进行阻燃整理.研究表明,蒙脱土纳米复合材料在该体系起高效成炭剂作用.同时探讨了整理液各组分质量浓度及整理工艺条件对阻燃整理效果的影响,得到纯棉织物阻燃整理的优化工艺为高聚磷酸铵质量浓度为160g/L,改性2D树脂交联剂质量浓度为100g/L,蒙脱土纳米复合材料质量浓度为40g/L,焙烘温度为150℃,焙烘时间为3min.     

大孔吸附树脂吸附精制鹰嘴豆异黄酮的研究

建立一种安全、高效、低成本的精制鹰嘴豆异黄酮的方法.以乙醇为提取溶剂从脱脂鹰嘴豆豆粉中提取了异黄酮,经浓缩、醇沉得到异黄酮粗提液.粗提液用6种大孔吸附树脂精制,精制效果表明:XAD-2树脂的精制效果最好,并研究了XAD-2树脂的吸附动力学及吸附热力学.获得了XAD-2树脂在不同温度下对鹰嘴豆异黄酮的吸附等温线,研究了鹰嘴豆异黄酮的动态吸附及洗脱特性.结果表明XAD-2树脂适合用来精制鹰嘴豆异黄酮,最终产品提取率和纯度都较高,分别为67%和21.29%.     

Synthesis and Property Studies of Transparent Resins Containing Rare Earth Complex Eu(Ⅲ) (TTA)_2(MA)_2 Phen·H_2O

A new rare earth complex Eu(Ⅲ)(TTA)2(MA)2Phen·H2O was synthesized and characterized by element analysis, FTIR, UV, thermal analysis, and fluorescence spectra. The strong fluorescence and high thermal stability of Eu(Ⅲ)(TTA)2(MA)2Phen·H2O were used to modify resin. The copolymer containing europium was prepared by copolymerization of Eu(Ⅲ) and styrene/α-methylacrylic acid, and characterized by FTIR and fluorescence spectra. The fluorescence spectra showed that the copolymer was a sort of materials with good ...     

纳米硅溶胶在棉织物负离子功能整理中的应用

采用纳米硅溶胶对棉织物进行整理,整理样经检测具有负离子效应.针对一种纳米硅溶胶探讨了可能影响整理效果的各种因素,确定了较优的整理工艺条件:硅溶胶含固量为6%,两浸两轧(轧车压力为2×105Pa),120℃烘干150s.对负离子测试系统进行了优化,并对整理后的棉织物进行了相关的性能测试.     

环糊精对鹰嘴豆异黄酮的包合作用

用研磨法制备β-环糊精(β-CD)及羟丙基-β-环糊精(HP-β-CD)与鹰嘴豆异黄酮(CAI)的包合物,由红外吸收光谱对包合物进行表征,并运用紫外分光光度法测试包合体系吸光度的变化.根据Benesi-Hildebrand方程确定了包合反应的表观包合稳定常数Kfθ和包合反应的热力学参数ΔGθ,ΔHθ和ΔSθ,并由此得出包合反应主要由焓变控制,推动力为范德华力.     

The Synthesis of Cyclodextrin Derivatives with Ethilenic Bond and Their Application on Silk

The cyclodextrin (CD) derivatives with ethilenic bonds mono-(2-O-tosyl)-6-acryloyl-β-cyclodextrin (β-CD-2-OTs-6-A) and 6-acryloyl-β-cyclodextrin (β-CD-6-A) were respectively synthesized.β-CD-2-OTs-6-A was prepared by the reaction propylene chloride with β-CD-2-OTs.β-CD-6-A was synthesized by the reaction propylene chloride with β-CD.The most suitable pH value for β-CD-6-A grafted onto silk fabric was proved to be 5.The optimal condition for grafting β-CD-2-OTs-6-A onto silk was proved:monomer concentration of 20％ on weight of fabric ( o.w.f),potassium persulfate of 1.85％ o.w.f,liquor ratio of 1:50,pH=5,and treated 30 min at80 C.Compared with β-CD-6-A,the grafting reaction has a higher graft yield while β-CD-2-OTs-6-A acts as the monomer.     

蒙脱土纳米复合材料作为成碳剂的热氧化分解动力学研究

采用蒙脱土纳米复合材料与高聚磷酸铵(APP)组成的阻燃体系对棉织物进行阻燃整理,并用非等温热重分析方法对复合阻燃体系整理后棉织物的热氧化分解特性进行研究.在空气气氛下,以不同的升温速率将样品从室温加热至900℃.通过基于动力学补偿效应的恒定动力学参数(IKP)法计算整理后织物的非等温氧化分解动力学参数,并由IKP法求得常用固相机理函数概率分布,确定复合体系的动力学模型.最终确定整理后织物的热氧化分解过程可由成核和核增长以及幂级反应机理函数进行描述.