A Dye-Sensitized Nanoporous TiO2 Photoelectrochemical Cell with Novel Gel Network Polymer Electrolyte

A novel gel network polymer electrolyte based on polysiloxane with internal plasticizing PEO chains was applied in fabricating solid-state dye-sensitized TiO₂ photoelectrochemical cells. Ethylene carbonate (EC)/propylene carbonate (PC) and LiI/I₂ were added as liquid plasticizer to improve the performance. The cells showed open circuit voltage of 0.69 V and short circuit current density of 1.7 mA cm^–2 under 28 mW cm^–2 white light illumination. The energy conversion efficiencies and fill factors of the cells were 2.9% and 0.72.     

Electrodeposition of functionalized Pyrrole (N-[3-(dimethylpyridyl-2-yl)aminopropyl], N-(3-aminopropyl), N-(3-acetamidopropyl) and N-(2-cyanoethyl)) on Stainless Steel gauze for membrane preparation

The preparation of dense membranes for ion separation by the electropolymerization of functionalized pyrrole has been carried out using pyrrole monomers with complexing groups such as amino and bis pyridine. The synthesis conditions of polymer films depend mainly on the applied potential and electrolyte composition; for polymer films derived from pyrrole monomers bearing amino groups, the film synthesis has been achieved only in acid solution. The main results obtained for the electropolymerization of N-(2-cyanoethyl)pyrrole, N-(3-aminopropyl)pyrrole, N-(3-acetamidopropyl)pyrrole and N-[3-(dimethylpyridyl-2-yl)aminopropyl]pyrrole are compared and the experimental conditions for membrane preparation discussed. The thickness and the morphology of the supported conducting polymer membrane prepared at a constant potential depend on the precursor monomer used. The duration of electrolysis should be sufficient to cover the metallic support, particularly for the N-[3-(dimethylpyridyl-2-yl)aminopropyl]pyrrole polymer membrane.     

JHXD油溶性聚合物选堵剂的研究

针对注水开发油田选择性堵水的急需,研制了一类新型油溶性聚合物选堵剂JHXD。试验结果表明：JHXD具有良好的油溶性,其堵水率大于99％,而堵油率仅为10％左右,是一类优良的选择性堵水剂。     

高吸水性树脂保水、保肥性能研究

笔者已经研制出性能较好的高吸水性树脂（SAP）,为了使其能够服务于农业生产,并获得有关高吸水性树脂的施用条件,施用量的基本数据,进行了高吸水性树脂保水、保肥性能的研究,通过一系列室内小范围田地实验,证明高吸水性树脂能保持沙性土壤中的水分,显著提高作物的出苗率,其中种子包衣实用量少而效果较好。     

聚合物系超临界流体脱挥研究进展

综述了聚合物系超临界流体脱挥（SFDV）中的相平衡和质量传递研究进展,分析、总结了超临界流体（SCF）对聚合物的溶胀、温度、压力及SCF流速等因素对脱挥过程的影响。     

注射成型物结构与性能的层析图像法研究

基于聚合物成型机理的三维层析数字图像化原理,对注射成型聚合物进行了X射线层析图像实验,在实验的基础上,详细分析了注射成型中聚合物层析结构形态特点,并从实验和理论两方面获得注射成型聚合物层析结构与其物理特性－－密度及其分布和取向之间的关系。     

减摩耐磨用无机颗粒／高分子复合材料研究的进展

综述了减摩抗磨用无机颗粒／高分子复合材料的最新研究进展,重点阐述了不同类型无机颗粒的作用机理及其对复合材料最终性能的影响,指出这类材料的发展趋势在于应用纳米填料,通过发展适当的分散技术,同时加强粒子与基体的结合,有可能克服现有微米颗粒复合材料中存在的缺点,全面提高复合材料的综合性能。     

高分子阻尼材料的研究进展

介绍了高分子材料的阻尼原理和评价方法,综述了高分子阻尼材料的最新研究进展,讨论了设计制备高性能阻尼高分子材料的原理和方法。     

Preparation of amorphous poly(ethylene terephthalate) from U‐polymer via a copolymerization process

U‐Polymer, a kind of polyarylate, was synthesized by interfacial polycondensation method with terephthaloyl chloride (TPC), isophthaloyl chloride (IPC), and bisphenol A (BPA) as raw materials. The structure of the U‐Polymer was characterized by IR and ¹H–NMR spectra. Then, an amorphous poly(ethylene terephthalate) (APET) was prepared with the introduction of the U‐Polymer to the PET sequence to improve thermal and mechanical behaviors of PET via the polymerization process. The structure and property of the APET were characterized by DSC and DMA. The results showed that the APET exhibits amorphism, transparency, higher glass‐transition temperature (T_g), and higher storage modulus than that of PET. © 2001 John Wiley & Sons, Inc. J Appl Polym Sci 82: 1653–1657, 2001     

Achieving compatibility in blends of low‐density polyethylene/polyamide‐6 with addition of ethylene vinyl acetate

Polymer alloys and blends, whose major advantage is the potential of achieving a range of physical and mechanical properties, have continued to be a subject of interest over recent years. Addition of a block or graft copolymer, with chemically similar segments to those involved in the polymer blend considered, led to a variety of desirable properties. The copolymer added to the blend functioned to promote a homogeneous dispersion of the constituent phases and to enhance their mutual adhesion. Such agents that enable better dispersion in polymer blends are known as compatibilizers. In this study an attempt has been made to improve the compatibility in a polymer blend composed of two normally incompatible constituents, LDPE and PA₆, by addition of a compatibilizer. The compatibilizer agent, ethylene vinyl acetate (EVA), was added to the polymer blend in ratios of 1, 5, and 10% by using a twin‐screw extruder. The effect of EVA on the crystallization of the polymer constituents was observed through DSC examinations. Furthermore, the control sample and all three blends of LDPE/PA₆/EVA were subjected to examinations to obtain their yield and tensile strengths, elasticity modulus, percentage elongation, izod impact strength, hardness, and melt flow index. © 2001 John Wiley & Sons, Inc. J Appl Polym Sci 82: 1748–1754, 2001