八—4—(四氢糠氧基)双酞菁衍生物钕(Ⅲ)、铕(Ⅲ)的合成和LB膜的气敏性

八—４—（四氢糠氧基）双酞菁衍生物钕（Ⅲ）、铕（Ⅲ）的合成和ＬＢ膜的气敏性张引＊辛春梅王丹（吉林省教育学院化学系，长春１３００２２）梁冰洁＊＊陈文启席时权（中科院长春应用化学研究所，长春１３００２２）关键词：希土双酞菁衍生物ＬＢ膜气敏性荧光性紫外可见...     

主链含硅聚芳酯的合成及气体透过性能的研究

以双［对－酰氯苯基］二甲基硅烷和酚酞、四溴酚酞以及双酚Ａ为原料，合成了三种主链含硅聚芳酯，并对聚合物相关的物理性质进行了表征，制成了均质透明的薄膜．采用低真空法测定这些聚合物对Ｈ２、Ｏ２、Ｎ２、ＣＯ２、ＣＨ４的气体透过速率，并计算出气体透过系数、扩散系数、溶解系数、分离系数．从气体透过性能与聚合物分子结构关系的角度，按照气体透过的溶解－扩散机制，对聚合物的气体透过性能进行了研究，而且着重讨论了聚合物的堆积密度对气体扩散系数的影响，以及聚合物主链中极性链段的百分含量对气体溶解系数和溶解选择性的影响。     

消除夹带溶胀的新液膜操作法

消除夹带溶胀的新液膜操作法曹汉瑾，褚莹，何彦涛，吴子生，严忠（东北师范大学化学系长春１３００２４）关键词液膜，油／水乳液，溶胀，夹带，包裹消除液膜操作中的夹带溶胀对液膜的工业化具有重要意义，夹带溶胀分为包裹溶胀和再液化溶胀。前者是乳状液滴上浮时将水相...     

α-Fe2O3纳米微粒/硬脂酸交替L-B膜的结构表征

We reported in this paper FTIR linear diehroic spectroscopy and anisotropic properties of the nanoparticulate α-Fe_2O_3-stearate alternating Langmuir-Blodgett films (Fe_2O_3-St LB films) a new inorganic-organic quantum superlattice system. A new method fitted to inorganic-organic alternating films is used to study the molecular orientation and discuss the order arrangement of the nanopartieles in the films. The the results show that a configuration of stearate ions bound to the surface of the nano-particles: COO~- group are spherically bound to the surface of the nanoparticles; the hydrocarbon chains are almost perpendicular (31°±5°) to the substrate (7 nm-Fe_2O_3-St LB films). The orientation of hydrocarbon chains and CH_2 scissors vibration show the existence of trans-zigzag planar structure for C—C broken bone of the hy7drocarbon chains, which is related to high-order structure of the alternate films.     

溶剂浓度对PVDF相转换膜大孔结构的影响

提出决定大孔能否发展的初始分相点处溶剂浓度临界点的概念 ,认为初始分相点处较高的溶剂浓度有利于大孔的发展 ,溶剂浓度低于一定的界限后 ,大孔停止发展 ,转为海绵状结构 .实验考察了不同凝胶液组成下制得的PVDF中空膜的结构 ,建立了相应的传质模型 ,模拟不同制膜条件下初生态膜内的组成分布情况 ,根据初始分相点处溶剂浓度临界点的概念 ,预测膜的形态结构 .模拟结果与相应制膜条件下的电镜照片有很好的对应关系 ,证明了上述大孔形成机理的正确性 .     

非均相羰基氧化合成碳酸二苯酯反应液组分的分析

通过色质联用仪对非均相催化一步合成碳酸二苯酯(DPC)过程中的反应液的主要产物及副产物进行了定性分析，其结果发现该反应的主要副产物为苯氧基丙酸和4-苯氧基苯酚以及四丁基铵盐；用气相色谱外标法对反应液中的DPC进行了定量分析，并通过回归法得到了定量分析：DPC的计算方程式，实验证明该方程在DPC的浓度小于10％范围内比较可靠。     

LB膜诱导Ba(NO3)2晶体取向生长

In this work, Ba(NO₃)₂ crystals with single crystal face were induced by using the the method of bio-mimetic mineralization and double LB films of behenic acid (BA) as the template. The crystals were characterized by Scanning Electron Microscope (SEM) and X-Ray Diffraction (XRD). The crystals were observed in regular square shape with uniform size about 5～8 μm by SEM, and they were found by XRD to grow along the (111) plane. From these experiments, we can conclude that the good selection of the (111) crystal face of Ba(NO₃)₂ is due to the electrostatic interactions , the match between this crystal face and the definite lattice structure of the LB films.     

红外光谱法研究LB膜中的分子取向

The structure information of orientation and packing of molecular chains can be obtained from infrared transmission and reflection-absorbance (RA) spectra. In the present paper, on the basis of Umemura et al., their FORTRAN program of minicomputer was developed and can be run on 486 personal computer. By comparison of infrared transmission and RA intensities, surface enhancement factors and molecular orientation angle were calculated using the above program, and the influence of complex refractive index, angle of incidence, and thickness of LB film were discussed. These results are consistent with that of Umemura et al.     

水中酚的膜萃取分离流动注射技术测定的研究

本文提出了硅橡胶膜在线萃取分离流动注射技术测定水样中苯酚的方法。由于水样中的苯酚透过硅橡胶进入萃取液的萃取量随时间的增加和温度的升高而增大，故采用停流技术及升高温度以降低酚的检出限。     

树脂法再生贮氢合金材料包覆液工艺中树脂吸附性能研究

本文研究并探讨了NK-ELN型离子交换树脂在再生贮氢合金材料包覆液过程中，温度、流速、溶液中离子浓度等条件对树脂交换容量和再生效率的影响，为树脂法再生贮氢合金材料包覆液工艺的制定，提供了一系列重要参数。