超临界流体快速膨胀法制备微粒的研究进展

介绍了超临界流体快速膨胀法的基本原理和工艺流程及其改进和发展,着重分析和总结了最近几年RESS法及其衍生技术的研究和应用情况,并按照其超临界溶剂、溶质及喷射背景的修正对其进行归类总结。另外,还对理论研究方面的现状和近年来的一些最新进展进行了阐述,对以后的研究重点和发展方向进行了讨论。     

Separation of nickel, cobalt and copper by solvent extraction with P204

Separation of nickel, cobalt and copper by solvent extraction with P204@钱东 @王开毅 @潘春跃 @唐有根 @蔡春林 @蒋金枝~~Project ( 99JJY2 0 0 10 )supportedbytheNaturalScienceFoundationofHunanProvince     

聚丙烯酸锂的合成与性能

研制了一种新型阳离子导电聚合物—聚丙烯酸锂 (PAALi) ,分子量在 2 0 ,0 0 0～4 0 0 ,0 0 0范围内 ,室温离子电导率为 10 - 8～ 10 - 9S·cm- 1;研究了聚合条件对产率的影响 ;探讨了分子量、锂离子含量、温度对其离子导电率的影响。     

Inclusion behavior of oxybutynin with hydroxypropyl-β-cyclodextrin

Inclusion behavior of oxybutynin (OBN) with hydroxypropyl-β-cyclodextrin (HP-β-CD) was investigated by ultraviolet absorption spectrum and fluorescence spectrum. A reliable determination of the complex stoichiometry was provided by the continuous variation technique. Alcohol was added to further investigate the mechanism of the inclusion behavior. Thermodynamic constants ΔG, ΔH and ΔS for inclusion interaction of OBN and HP-β-CD were determined. The results show that host-guest complex with molar ratio of 1:1 is formed, and inclusion stability constant between OBN and HP-β-CD is 54.9 L/mol determined by ultraviolet spectrum and 11.1 L/mol determined by fluorescence spectrum. OBN has weak binding ability with HP-β-CD in aqueous solution (stability constant <10² L/mol) and addition of alcohol leads to a decrease of stability constant, which indicates that the hydrophobic force contributes to the inclusion process. ΔG, ΔH and ΔS are all less than zero, which indicates that the inclusion process is a spontaneous and exothermic process.     

锂离子电池用聚合物电解质的制备与性能研究

通过原位复合法制备了PEO/LiClO4/SiO2聚电解质膜,采用TEM、XRD、交流阻抗法和充放电测试等研究了粒子的分布状态、聚合物电解质膜的结晶行为及组装成电池的充放电行为。结果表明,原位生成的SiO2粒子分布均匀,抑制了聚合物电解质的结晶,以此膜为电解质组装的全固态聚合物锂电池首次充电电压平台在4.2V左右,放电中值电压为3.6V,初始充电比容量为130mAh·g-1,50次循环后放电容量保持在84mAh·g-1。     

乳液聚合条件对聚苯胺性能的影响

以（NH4）2S2O8为催化剂,在非极性溶剂-功能质子酸-水三相体系中,采用乳液聚合方法合成聚苯胺。对乳液聚合与化学氧化溶液聚合合成的聚苯胺性能进行了比较,研究了掺杂酸、氧化剂、反应时间、温度等聚合条件对聚苯胺导电性、溶解性等性能的影响。结果表明,乳液聚合产率高于80%,聚苯胺电导率大于1S/cm,在有机溶剂中的溶解性与用化学氧化合成的聚苯胺比较有明显提高。     

环保型绝缘浸渍漆用超支化不饱和聚酯的研究

针对传统无溶剂浸渍漆中稀释剂的毒性大、污染大等,以自制的超支化不饱和聚酯树脂DP-1作为共稀释剂,开发出低挥发环保型聚酯亚胺绝缘漆。基于配方对漆液粘度、胶凝时间、粘结强度和介电损耗等的影响规律,对绝缘漆配方进行了优化。结果表明,组成为m(聚酯亚胺PEI)∶m(DP-1)∶m(乙烯基甲苯VT)=100∶10∶60的配方具有较优的综合性能,且在180℃下的介电损耗与传统绝缘浸渍漆相当,预计在高温绝缘漆等领域具有广阔的应用前景。     

Preparation and characterization of high salts polymer electrolyte based on poly（lithium acrylate）

1　INTRODUCTIONWorldwide research and efforts are currentlyunderway to fabricate all solid state, rechargeableLi and Li ion batteries utilizing Li+ conductivepolymer electrolytes[1]. Solid polymer electrolytespossesses many advantages including high ionicconductivity, high specific surface energy, solventfree, wide electrochemical stability windows, lightand easy processability[2]. Apart from polyethy lene oxide ( PEO )[3], poly ( vinyl alcohol )(PAV)[4], …     

St-DVB-AA树腊微粒的合成及其在亲水涂料中的应用

介绍了苯乙烯－二乙烯基苯－丙烯酸（St-DVB-AA)亲水树脂微粒的合成，讨论了稳定剂对此聚合反应体系，反应时间和丙烯酸用量对树脂微粒径，以及树脂微粒粒径对亲水涂膜性能的影响，试验结果表明，加入亲水树脂微粒，使亲水涂膜的亲水性能有很大的改善，降低了亲水箔与水的初期接触角。     

低热固相反应在材料合成中的应用

介绍了低热固相反应机制的研究进展、反应特点及影响低热固相反应的一些因素。重点阐述了低热固相反应在纳米材料、有机合成、电池材料、气敏材料以及其它一些功能材料中的应用。阐明低热固相反应确实是新型材料制备的一种简便、有效并有光明前景的方法。