甲基丙烯酸甲酯与1-(2-叔丁基过氧异丙基)-3-异丙烯基苯的共聚研究

讨论了甲基丙烯酸甲酯与１－（２－叔丁基过氧异丙基）－３－异丙烯基苯的共聚行为。通过自由基共聚得到了带过氧侧基的聚合物。通过红外光谱，紫外光谱和凝胶色谱对共聚物进行了表征。用碘量法测定了共聚物中活性氧的含量，并由此测定了两者的竞聚率，ｒＤ１２０＝０．６９±０．０８，ｒＭＭＡ＝０．６３±０．０８。     

DMS AND ~(13)C NMR STUDIES ON THE COMPATIBILITY AND DYNAMICS OF LATEX BIDIRECTIONAL IPNS AND LATEX IPN OF PVAc/PBA

The compatibility and dynamics of latex bidirectional/nterpenetrating polymer networks (LBIPNs) and latex IPN(LIPN) of poly(vinyl acetate)(PVAc) and poly (butyl acrylate )(PBA) are investigated by means of dynamic mechanical spectroscopy (DMS) and nuclear magnetic resonance (NMR) techniques. The results of DMS show that the compatibility of the LBIPNs is much better than that of the corresponding LIPN and depends to, a large extent on the distribution of PVAc both in the core and in the shell. The results of NMR measurements indicate that the rotational correlation times of the side- groups of PBA in the LBIPN are longer than those in the LIPN. The relation between the ~(13)C linewidths of PBA and temperature is also discussed.     

叔丁醇—醋酸乙烯—水三元系液液平衡研究

该三元系的相平衡是在含有叔丁醇、醋酸乙烯（以下简称ＶＡＣ）、水的三元系中测定的。理论上可根据二元平衡数据预测三元数据，但活度系数和组成间的关联式种类繁多，它们均应满足热力学一致的要求，但每个关联式在应用时或多或少地受不同程度的限制，使得理论值和实测值...     

Comparison on Thermal Decomposition of Propionate,Benzoate and Their Chloroderivative Salts of Zn(II)

The thermal decompositions of propionates, benzoates Zn(II), their chloroderivate and complexes with thiourea have been studied by the means of TG, DTG, DTA, IR and XRD-powder diffraction methods. The investigated decompositions are compared and the results are presented in this report. The results showed different features of thermal decomposition of Zn(II) halogenpropionate and halogenbenzoate. In the case of Zn(II) halogenpropionate the presence of halogen effects different features of thermal decomposition and changes character of the final products. In the case of halogenbenzoate Zn(II) the halogen does not influence neither the character of decomposition nor the character of final products. This revised version was published online in August 2006 with corrections to the Cover Date.     

单分散聚丙烯酸丁酯-二氧化硅核壳粒子的制备

近年来,有机-无机核壳材料因其具有可调的光、电、磁等特性而备受关注．无机物外壳可以增强粒子的热力学稳定性、机械强度和抗拉性能．高分子乳胶粒内核具有弹性,且易成膜,外部包覆无机物的乳胶粒可结合两者特性并产生协同效应．     

大分子ATRP引发剂α-卤烷基聚苯乙烯的合成及其引发的丙烯酸丁酯接枝聚合

通过酰基化、还原、酯化和卤代反应 ,在聚苯乙烯上引入α 卤烷基 ,使用FTIR、1 H NMR、1 3C NMR和GPC对产物进行表征 ,结果表明基团转化可以完全进行 ,整个过程中无交联等副反应 .其中α 溴乙基聚苯乙烯可作为原子转移自由基聚合的多功能度引发剂 ,由此引发丙烯酸正丁酯聚合生成梳状聚 (苯乙烯 g 丙烯酸正丁酯 )     

Ruthenium carbene initiated ring-open metathesis polymerization of endo-bicyclo[3.2.0]hept-6-en-3-yl benzoates with tacticity studies

<正>After tentative ring-opening cross metathesis(ROCM) of endo-bicyclo[3.2.0]hept-6-en-3-yl 4-bromobenzoate with PhCH=CH_2 initiated by(Cy_3P)_2Cl_2Ru=CHPh in CH_2Cl_2,ring-opening metathesis polymerization(ROMP) of a series of endo-bicyclo[3.2.0]hept-6-en-3-yl benzoates was achieved under the same conditions,furnishing a variety of the corresponding polymers.Then some of them were selected to hydrogenate the C=C double bonds in their backbone with p-tosylhydrazide,affording saturated and thus more flexible polymers.All of these polymers were well characterized by spectroscopic means including GPC,UV-Vis,NMR and IR,based on which the tacticity of these polymers was investigated together with nonlinear optical(electric-field-induced second-harmonic generation,EFISH)) analysis.     

4-(N-乙酰氨基)-3-(4-芳基噻唑-2-氨基)苯甲酸乙酯的合成与生物活性

以3-氨基-4-乙酰氨基苯甲酸乙酯为原料设计合成了18种4-(N-乙酰氨基)-3-(4-芳基噻唑-2-基)-苯甲酸乙酯新化合物.化合物结构经质谱,元素分析,1H NMR和13C NMR确证.生物活性实验结果表明,化合物3d,3h,3p(40μg/mL)对神经氨酸酶(NA)的抑制率分别为36.02%,33.40%,42.05%;化合物3g,3h(500mg/L)对纹枯病菌的抑制率为50%.     

微波萃取/催化-紫外光度法快速测定2,6-二(叔丁基)-4-甲基苯酚

采用微波萃取，催化技术，改进了喷气燃料中抗氧剂2，6－二（叔丁基）－4－甲基苯酚的测定方法，使整个试验时间由原来的2h缩短到20min左右，克服了常规水浴回流法萃取时间长的缺点，实现了快速检测，在0．6－3．0mg.L^-1的测定范围内，相对标准偏差小于3％，回收率在94．9％－99．9％，同时有利于降低能耗。