含氮和硫配位原子的配合物合成和表征

苯文报道乙酰二茂铁缩肼基二硫代甲酯的合成极其一些金属络合物的合成和表征。这类配合物具有抗癌,杀菌和抗病毒活性。     

7,8-二氢-6,6-二甲基-7,8-环氧-6氢-吡喃[2,3-f]苯并-2,1,3-恶二唑的合成

本文给出了一条较好的制备7,8-二氢-6,6-二甲基-7,8-环氧-6氢-吡喃[2,3-f]苯并-2,1,3-恶二唑的合成路线，即由对乙酰氨基苯酚经酯化、Fries重排、环合、还原、脱水、硝化、脱酰基、氧化、脱氧和催化环氧化等反应制得标题化合物，其结构经元素分析和光谱数据确证。     

高效液相色谱—化学发光法研究异烟肼和利福平

基于异烟肼和利福平在碱性介质中能与K3Fe(CN)6反应产生强的化学发光，因 此设计了一个经高效液相色谱（HPLC）分离柱后同时检测一线抗结构病药物异烟肼 、利福平的化学发光检测器。研究并优化了流动相、流速以及化学发光检测的条件 。该方法测定异烟肼、利福平的线性范围分别为0.05～6.0mg/L，0.08～20.0mg/L ，其检出限：异烟肼为2×10^-2mg/L，利福平为4×10^-2mg/L，测定的相对标准偏 差分别为1.9，2.9。该方法已成功地用于同时测定复方利福平片中利福平和异烟肼 的含量。     

EFFECTS OF COUPLING AGENTS ON THE CRYSTALLIZATION BEHAVIOR OF PP/T-ZnOw COMPOSITES

The objectives of this paper are to understand the crystallization behavior of polypropylene(PP)composites with surface modified tetra-needle-shaped zinc oxide whisker(T-ZnOw).T-ZnOw was surface modified with different coupling agents,such as silane coupling agents(KH-550,KH-560)and titanate coupling agent(NDZ-105),in order to improve the compatibility between PP and T-ZnOw.DSC and POM were used to characterize the melt and crystallization behavior and the crystalline structures of the composites,respectively.The results show that the surface modified T-ZnOw acts as a nucleating agent of PP crystallization,depending on the coupling agent used for modification.KH-550 and KH-560 have more apparent role in improving the interfacial interaction than NDZ-105 and induce PP crystallization at higher temperature and with smaller spherulites size.The results also suggest that the crystallization behavior depends on not only the content of coupling agent,but also the content of the surface modified T-ZnOw used in the composites.     

稀土氯化物催化的Diels-Alder反应

本文提出以稀土氯化物作催化剂, 催化等摩尔比的丙烯醛和乙烯基丁醚进行环加成反应, 生成α-丁氧基-3,4-二氢-2H-吡喃, 实验表明, 环加成产物是不稳定的中间物, 它可以进一步开环聚合构成一个催化的连串反应, 找到了稳定中间物的反应条件, 以90-95%产率得到环加成产物。     

2-氨基取代噻唑基膦酸脂的合成

本文报导一系列2-氨基-5-取代-4-噻唑基膦酸酯和2-氨基-4-取代-5-噻唑基膦酸酯的合成. 这类化合物显示了一定的杀菌活性.     

3-间硝基苯基/对硝基苯基-6-芳基-1, 2, 4-三唑并[3, 4-b]-1, 3, 4-噻二唑衍 生物的合成

报道了以3-间硝基苯基/对硝基苯基-4-氨基-5-巯基-1,2,4-三唑与芳酸在磷酰氯的作用下,合成了16个标题化合物,并研究了合成反应的条件。观察了部分标题化合物对金黄色葡萄球菌和大肠杆菌有明显的抑菌作用。     

Studies on interface in polyester/fly-ash particulate composites

Fly ash (FA)-general purpose unsaturated polyester resin (GPR) particulate composites have been made. The effect of surface treatment of FA with two different silane coupling agents (CAs) on the mechanical properties like tensile, flexural, impact strength and hardness, thermal properties like thermal stability and morphological properties (SEM) of FA-GPR composites are studied. The properties of FA-CA-GPR are also compared with that of GPR and CaCO₃ -GPR. An enhancement in the tensile, flexural, and impact strength and moduli are observed when FA is surface treated with CA. Hardness is also found to increase with CA-treated FA-filled GPR. A suitable mechanism for the chemical reaction taking place at the interface in the presence of CAs is proposed.     

Interfacial reinforcement in composites with PPT aramid fiber modified by network-intercalation method

—A novel surface treatment for poly(p-phenylene telephthalamide) (PPTA) fiber is performed with silanes and urethane binder that are usually used as sizes for glass fiber treatment. The PPTA used for the surface treatment is modified by a spinning process to make the gaps between PPTA crystallites open. In this treatment, supercritical carbon dioxide fluid method is used to impregnate the sizing molecules into open gaps in PPTA fiber. After the impregnation, the fiber is heated at 100–170°C to make the gaps close and turn open-gapped fiber to the normal type of PPTA modified with sizes. The interfacial shear strength of fiber to epoxy resin is measured by microdroplet method. The modified PPTA improves the interfacial shear strength by ca. 67% to the interfacial shear strength given by normal PPTA without treatment. Those improvements are 33% without heating, 18% with only silanes, and 12% with only urethane instead of the mixture of silane and urethane. In addition, the fiber strength shows no remarkable decrease after the treatment.     

β-三芳基锗-α(β)-取代丙酸同1-乙氧基锡杂恶唑烷的 反应

利用β-三芳基锗-α(β)-取代丙酸同1-乙氧基锡杂恶唑烷的1-位取代反应,合成了15个1-[(β-三芳基锡-α(β)-丙酰氧基]-2,8,9-三氧杂-5-氮杂-1-锡杂三环[3,3,3,0^1.5]十一烷,并研究该反应规律,利用IR,NMR和MS表征了该类化合物的结构和质谱裂解机制,生物活性测定表明,它们只对某些细菌如溶血链球菌和金黄葡萄糖球菌有较好的抑制作用。