硅土充填高聚物的性能研究

探讨了硅土的矿物学特性及其对充填高聚合物的影响，研究表明，天然超细粒度（０．０１－０．００１ｍｍ）复合矿物的及独特的粒－片叠置结构是导致硅土在高聚合物中具有良好增强性能的主要原因。     

Phase transition characteristics of the Ni46Mn35Ga19 single crystal

The phase transition characteristics of the prepared Ni46Mn35Ga19 single crystal have been systematically investigated by measuring resistance, strain, heat flow, and ac magnetic susceptibility. The experimental results indicate that both magnetic transition and martensitic transformation occurred simultaneously and the corresponding transition temperature was about 356 K. Meanwhile, the prepared single crystal also exhibited spontaneous and magnetic-field-enhanced two-way thermal shape memory effect with the strains up to -0.89% and -1.90% with and without a magnetic field of 1.6 T, respectively. The possible mechanism of the large spontaneous and magnetic enhanced deformation were analyzed based on the phase transition characteristics of Ni46Mn35Ga19 single crystal and the preferential orientation of martensitic variants.     

对羟基苯甲酸丁酯分子印迹聚合物的制备及吸附性能研究

以对羟基苯甲酸丁酯为模板,α-甲基丙烯酸（MAA）为功能单体,乙二醇二甲基丙烯酸酯（EGDMA）为交联剂,聚乙烯醇为分散剂,采用悬浮聚合法在氯仿溶剂中制备了分子印迹聚合物（MIP）。通过考察该聚合物对模板分子的间歇式吸附实验表明,所制备的分子印迹聚合物对模板分子的吸附较快,最大表观结合量近270μg／g。Scatchard方程研究表明在研究的浓度范围内在聚合物中形成了两类不同的结合位点。     

高分子及其复合物气敏材料的研究进展

综述了高分子及高分子复合物气敏材料的研究进展,重点介绍了高分子/高分子复合物及高分 子/导电填充物复合气敏材料的研究结果,同时简要介绍了今后该研究领域的发展方向。     

聚合物结晶动力学

总结了几种常见的用于描述聚合物等温及非等温结晶行为的动力学方法,并结合具体的应用实例对这些动力学模型的优缺点等方面进行了简单的讨论。     

电光聚合物调制器电晕极化和直接接触极化方法的实验比较

对调制器用电光聚合物材料的2种极化工艺--直接接触极化方法和电晕极化方法进行实验比较和分析,制备了用于极化实验的3层结构的电光聚合物调制器,给出了这2种极化方法的实验装置和极化工艺.实验发现,极化前的预处理工艺控制非常关键,否则会降低极化效率或损伤膜表面.结果表明:直接接触极化方式对膜表面的损伤较小,极化电压低,而电晕极化方式可以得到高的电光系数.直接接触极化方式极化的面积能够达到基板的尺寸.     

高分子催化剂研究进展

以高分子催化剂的组成、性能及制备等为线索介绍了近些年来高分子催化剂的研究进展情况.对高分子负载络合催化剂、可溶性金属络合物催化剂、高分子保护催化剂、模板聚合物催化剂以及稀土、相分离催化剂等作了较为全面的概括论述.     

加工过程中高分子材料形态控制的研究进展

高分子材料的性能不仅依赖于大分子的化学结构和链结构，而且在 很大程度上依 赖于结晶、取向形态及多相体系的相形态。开展高分子材料在加工过程中的热、应力场作用 下形态形成、演化、调控及“定构”研究对发展高分子成型加工基础理论、开发高性能化、 复 合化、多功能化、低成本化及清洁化高分子材料有重要意义。本文简述了加工过程中高分子 材料形态控制的研究进展，包括国内外研究现状、存在的问题和我国的差距及未来研究的重 要科学问题。     

Creatine kinase,myosin heavy chains and magnetic resonance imaging after eccentric exercise

The aim of this study was to examine the relationship between myosin heavy chain (MHC) release as a specific marker of slow-twitch muscle fibre breakdown and magnetic resonance imaging (MRI) of skeletal muscle injury after eccentric exercise. The effects of a single series of 70 high-intensity eccentric contractions of the quadriceps femoris muscle group (single leg) on plasma concentrations of creatine kinase and MHC fragments were assessed in 10 young male sport education trainees before and 1 and 4 days after exercise. To visualize muscle injury, MRI of the loaded thigh was performed before and 4 days after the eccentric exercise. All participants recorded an increase ( P ? 0.05) in creatine kinase after exercise. In five participants, T2 signal intensity was unchanged post-exercise compared with pre-exercise and MHC plasma concentration was normal; however, they showed an increase ( P ? 0.05) in creatine kinase after exercise. For the remaining five participants, there was an increase in T2 signal intensity of the loaded vastus intermedius and vastus lateralis. These changes in MRI were accompanied by an increase in MHC plasma concentration ( P ? 0.01) as well as an increase in creatine kinase ( P ? 0.01). We suggest that changes in MRI T2 signal intensity after muscle damage induced by eccentric exercise are closely related to damage to structurally bound contractile filaments of some muscle fibres. Additionally, MHC plasma release indicates that this damage affects not only fast-twitch fibres but also some slow-twitch fibres.     

二维配位聚合物[Zn（phth）（im）2]n的水热合成及晶体结构

采用水热法合成了二维配位聚合物[zn（phth）（im）2]n（H2phth=邻苯二甲酸,im=咪唑）．对其进行了元素分析和X射线单晶衍射测定.该化合物属于单斜晶系,空间群Pn,晶胞参数α=8．382（2）,b=9．965（3）,c=9．963（3）A,β=104．363（3）A,z=2,V=806．2（4）A^3,Dc=1．506g/cm^3,F（000）=372,μ=1．547mm^-1,R1=0．0282,ωR2=0．0684．