采用控制变量法,对以过氧化二苯甲酰(BPO)为引发剂,甲基丙烯酸甲酯(MMA)为单体的本体聚合预聚实验条件进行优化,发现甲基丙烯酸甲酯(MMA)的用量为15 mL时,最佳预聚实验条件:m(BPO)=80 mg,水浴温度为80℃.同时,通过向甲基丙烯酸甲酯(MMA)中加入适量的单烯烃化合物来进行改性,然后对共聚物进行基本的表征.

以1,1’-(1,4-丁基)-二-(1H-苯并咪唑)(bbbm)为柔性双齿配体,与金属Cu(Ⅱ)离子配位得到了一个铜配合物[Cu2(bbbm)2(SCN) 4(CH3OH)2].通过X-射线单晶衍射测定了配合物的晶体结构.其晶体属三斜晶系,P1空间群,晶胞参数为a=8.695 1(17) (A),b=10.116(2) (A).,c=13.818(3) (A).,α=75.64(3)°,β=82.52(3)°,γ=72.98(3)°,V=1 123.7(5)(A)3,Z=1,Dc=1.481 mg/m3,F(000)=516,R1[I＞2σ-(I)]=0.042 3,ωR2=0.135 3.研究表明,该配合物是一个双核结构,固体状态下,依靠C—H…S分子间氢键和π-π堆积作用,配合物的双核分子被连接形成了一个三维网状超分子结构.此外,测试了该配合物在2,6-二甲基苯酚偶联反应中的催化活性及其电化学性能.

以1,1′-二茂铁双甲酸为配体,与Cd(Ⅱ)作用合成了一个新配合物{[Cd(O2CFcCO2)2]·CH3CH2OH}n(Fc=ferrocene),并使用X-单晶衍射仪对其结构进行测试,结果发现该配合物为一维双链聚合物.对配合物的荧光性能进行了研究,数据显示该配合物的荧光性能主要取决于二茂铁双甲酸.

One new complex {[Cd(O2CCH2·Fc)2(bbbm)]·0.5CH3OH}n (Fc =ferrocene) was synthesized by self-assembly of ligandsodium ferrocenylacetic, 1,1-(1,4-butanediyl)bis-1H-benzimidazole)(bbbm) and Cd(II) cationsatroom temperature.X-ray crystal diffraction revealed that the complex displayed 1-D double chain structure.The crystal structure of the complex belonged to triclinic system with space group P-1.The fluorescence spectra of the complex in solid state suggested that the fluorescence emission of the complex was ruled by ferrocenylacetic ligand.

It is one of the most effective methods for directional synthetic complexes by the precursor complexes as ligand complexes to preparation of offspring complexes.The " genes" of precursor complexes can be maintained from precursors to their offspring complexes.In this paper,we select one 1-D Cu (Ⅱ) complex { [Cu (bbbm)(CH3COO)2]·(CH3OH)2}n(Q)[bbbm=1,1'-(1,4-butanediyl)bis-lH-benzimidazole)] as a precursor complex,one offspring complex [Cu (bbbm) (Ns) 2 (Py)]o (1) was obtained via the substitution,addition reactions.The offspring complex (1) maintains the "genes" of precursor eomplex.The coordination modes of Cu(Ⅱ) ions and the changes of bbbm ligands in the precursor complex (Q) and its offspring complex (1) are characterized by single-crystal diffraction.The catalytic abilities of the two complexes and the structure-activity relationships are also studied.

The research on and the development of intraluminal cellulase of termite has become the hotspot in recent years.In this paper,the source of intraluminal cellulase of termite,the research status of termite cellulase at home and abroad,the mechanism of the degradation of cellulose,and the application of termite cellulase in food fermentation were reviewed.

采用超高效液相色谱-串联质谱技术,建立了水中5类共12种抗生素的同时检测方法.分析物包括4种四环素类、3种磺胺类、2种大环内酯类、2种喹诺酮类和1种酰胺醇类抗生素.样品经过0.22 um滤膜过滤,采用ACQUITY UPLC BEH C18色谱柱(50 mm×2.1 mm,1.7 um)分离,以0.1％(体积分数)甲酸溶液-甲醇为流动相梯度洗脱,采用电喷雾离子源串联质谱,在正离子模式下采用多反应监测(MRM)模式检测,外标法定量.12种抗生素类药物在0.1 ～50 ug/L质量浓度范围内线性关系良好(相关系数大于0.99),检出限为0.0002～0.005 ug/L.以实验室纯水为基质,在2.0、10.0 ug/L 2个加标水平的平均回收率为90.9％～113.0％,相对标准偏差(RSD)为1.86％～7.87％.该方法准确可靠、方便快捷,适用于水体中抗生素类药物的定性定量分析.

Fiber-like complex nickel oxalate was prepared by the reaction between oxalate and ammonia-nickel complex,and the reaction between nickel oxalate and ammonia,respectively.Results showed that fiber-like complex nickel oxalate from the second process crystallized well and dispersed uniformly by means of XRD and SEM.Fiber-like complex nickel oxalate was a complex of nickel oxalate and ammonia by chemical analysis and thermogravimetry.The reaction mechanisms for the two measures of preparation fiber-like complex nickel oxalate were discussed.The results showed that the second process had more advantage over the first one in the industrialized production.

Biodiesel is a regenerative resources of fuel.At present,countries around the world are setting off biodiesel exploitation and utilization.With the development of biodiesel industry,the shortage of raw materials is the bottleneck of scale.The cheap renewable resources,such as lignocellulosic biowastes,agricultural products processing wastes,industrial wastes and effluent can be utilized to produce micro-biodiesel by oleaginous microorganism.Compared with the traditional biodiesel,the micro-biodiesel is not affected by season,climate and land resources,and is easy to be produced in a continuous large-scale.The research status,development tendency and the processing technology of micro-biodiesel at home and abroad were introduced.The sources and characteristics of raw materials of micro-biodiesel in China were elaborated.Some countermeasures were put forward according to the problems existing in micro-biodiesel industrialization.

A method was proposed for the separation and determination of five tepyridine derivatives by high performance liquid chromatography. The separation was carried out on a Symmetry C18 （3.9mm i. d. x 150mm, 5~m） column with methanol-water （8：2） as mobile phase and detection wavelength （280nm） in room tempera- ture, isotropic elution. Measurement could be finished in 15min with a good linearity for samples concentration range from 0.1 ~g/mL to 400p~g/mL and the relative standard deviation below 2.2%. This method is simple, efficient, and accurate.

[Objective] To study the electrochemical behavior of antitumor herbal drug apigenin at glassy carbon electrode.[Methods] Cyclic voltammetry(CV),differential pulse voltammetry(DPV) were used in experiments.[Results] In CV,only one irreversible anodic peak with Ep=0.580 V was appeared in 0.1 M B-R buffer solution(50% ethanol,pH 9.0).The peak currents were linearly related with apigenin concentrations in a range from 5.0×10-6 M to 9.0×10-5 M.And the detection limit was 1.5×10-6 mol/L.A new electroanalytical method for this herbal drug was established according to this anodic peak.Using the established method without pre-separation,apigenin in herbal drug was determined with satisfactory results.[Conclusion] This method is a new one to detect apigenin.

[Objective] The technological conditions of preparing food additive sodium polyacrylate were discussed.[Method]Using(NH4)2S2O8-NaHSO3 as mixed initiator,the influences of monomer concentration,dosage of initiator components,reaction temperature,reaction time on the relative molecular mass of sodium polyacrylate were studied by using aqueous solution polymerization method.[Result] The optimum technological conditions of sodium polyacrylate were as follows:the reaction temperature of 40~45 ℃,the reaction time of 4 h,(NH4)2S2O8 dosage of 0.02%,NaHSO3 dosage of 0.01%,the monomer concentration of 45%.Under these conditions,the molecular mass of sodium polyacrylate was 30 000 000 ~ 35 000 000.[Conclusion] Through the detection,the prepared sodium polyacrylate can meet the requirements of food additive.It played good thickening and fresh-keeping effects when it was used in some kinds of food.

In the present studies,the effects of monomer concentration,initiator,reaction temperature and reaction time on polyacrylic acid sodium molecular weight were investigated with aqueous solution polymerization.The sodium polyacrylate(106-107) were obtained under the condition of reaction temperature of 40℃-45℃,reaction time of 4h,(NH4)2S2O8 of 0.02% and the monomer concentration of 45%.

本文论述了脲醛树脂胶黏剂的合成机理及发展过程,介绍了脲醛树脂胶黏剂的特性和存在问题及近年来的研究成果.最后指出,脲醛树脂胶黏剂具有高效环保的发展方向.