基于丙烯酸-丙烯酰胺共聚物的氧化铟锡蚀刻油墨的制备与性能

以丙烯酸（AA）、丙烯酰胺（AM）为单体,采用水溶液聚合法制备了低黏度聚（丙烯酸-丙烯酰胺）P（AA—Co—AM）树脂。使用旋转黏度计和热重分析仪等测试了树脂的性质,并以该树脂为连接料,制备了新型水性氧化铟锡（ITO）蚀刻油墨。探讨了该油墨的保水性、pH变化和蚀刻图像解析度等。结果表明：通过优化合成工艺可制备分子量适宜的P（AA—CO—AM）树脂,它在150℃以下无分解现象;油墨在使用3h后失水率仅为3．68％-5．34％,存放60d后pH基本无变化,且丝网印刷效果明显好于市售油墨。     

电子墨水微胶囊及电泳显示原型器件的制备

TiO2 particles coated with polystyrene which were prepared via in situ polymerization and oil green dye were dispersed in tetrachloroethylene and xylene, the mixture came to be electrophoretic ink and was encapsulated in to microcapsules by complex coacervation from gelatin and a hydrolyzed copolymer of styrene and maleic anhydride(SMA). It was demonstrated that the membranes of the microcapsules were formed from nano sized coacervate droplets resulting from gelation and hydrolyzed SMA, which leads to a compact membrane structure. Microcapsules were characterized in terms of microstructure, morphologies by scanning electron microscopy(SEM). Electrophoretic display prototype was prepared by coating electrophoretic ink microcapsules slurry on ITO glass with nearly single layer and sealed by UV curable adhesires. The characters “Zheda” in Chinese was firstly displayed at a low volt 9 V D. C..     

Ink‐Jet Microdispensing for the Formation of Gradients of Immobilised Enzyme Activity

Summary: The integration of gradients of enzyme activity in microstructured biosensor arrays enables intrinsic on‐line quality control of biosensor performance. Multiple sensor elements with different compositions and hence varying responses for the same analyte are evaluated as a basis for improving data reliability. The formation of glucose oxidase/polymer microstructures using a piezo microdispenser and their examination by scanning electrochemical microscopy (SECM) are used to demonstrate the feasibility of this approach.

Optical microscope image of grids obtained by dispensing of 1 mg/mL GOx and 2 mg/mL Vinnapas® mixture.     

Ink‐Jet Printing of Luminescent Ruthenium‐ and Iridium‐Containing Polymers for Applications in Light‐Emitting Devices

Summary: Defined films of luminescent ruthenium(II ) polypyridyl‐poly(methyl methacrylate) (PMMA) and iridium(III ) polypyridyl‐polystyrene (PS) copolymers could be prepared by ink‐jet printing. The copolymers were deposited on photoresist‐patterned glass substrates. Films as thin as 120 nm could be printed with a roughness of 1 to 2%. In addition, the film thickness could be varied in a controlled way through the number of droplets deposited per unit area. The topography of the ink‐jet printed films was analyzed utilizing an optical profilometer. The absorbance and emission spectra were measured using fast parallel UV‐vis and fluorescence plate reader.

Photo of the solutions of luminescent ruthenium (left) and iridium (right) containing polymers in a glass microtiter plate (top). The subsequently prepared films using ink‐jet dispensing techniques are shown below.     

以天然色素为显色剂的隐形墨水实验

以小苏打溶液替代氢氧化钠和碳酸钠溶液作为隐形墨水,天然色素酒精浸取液为显色剂,以白醋替代盐酸作为消色剂,进行隐形墨水实验,实验操作安全、简单,字迹显示清晰,用时恰当,是一个合适的课外活动实验。     

Drying dissipative structures of Chinese black ink on a cover glass and in a dish

Macroscopic and microscopic dissipative structural patterns are formed in the course of drying a suspension of Chinese black ink on a cover glass and in a dish. The time for the drying and the pattern area increased as the particle concentration increased. The broad ring patterns of the hills accumulated with the particles formed around the outside edges on a macroscopic scale. The height and the width of the broad ring increased as the particle concentration increased. The spokelike patterns of the rims accumulated with particles were also formed on a macroscopic scale. Microscopic patterns of colloidal accumulation were observed over the whole region of the pattern area. Various types of convection cells were observed on a cover glass and in a dish at 25–80 °C. A time-resolved observation of the drying process was also made. The convections of water and the colloidal particles at different rates under gravity and the translational and rotational Brownian movement of the particles were important for the macroscopic pattern formation. Microscopic patterns were determined by the translational Brownian diffusion of the particles and the electrostatic and the hydrophobic interactions between the particles and/or between the particles and the cell wall in the course of the solidification of the particles.     

有机硅改性环氧树脂在油墨中的应用

以Ph2SiCl2、Me2SiCl2、MeSiCl3为原料合成了分子量为2000左右含端羟基聚苯基甲基硅氧烷。以该硅树脂与E-20环氧树脂共缩聚制备的有机硅改性环氧树脂作为油墨连结料，与TiO2、增塑剂、溶剂等制成A组分，固化荆为B组分，由A、B组分所组成的油墨具有优良的移印、成膜性能。研究表明该油墨具有较高附着力，固化膜具有耐热、耐寒、耐溶剂和高电绝缘等优点，可作为在苛刻使用条件下移印和丝印的特种油墨。     

Aqueous and nonaqueous microemulsions with high molecular weight alkanes

This study extends the existing phenomenological thermodynamic model of aqueous microemulsions to nonaqueous microemulsions and examines the phase patterns when the melting temperature of the alkane oil is in the range of other liquid-liquid transition temperatures. The liquid paraffins studied are the alkane oils of greater than 17 carbons and are solid at room temperature. Water, water and ethylene glycol (41 by wt.), propylene glycol and water (41 by wt.), and propylene glycol are the four non-oleic components examined. Homogeneous polyoxyethylene nonionic surfactants and the commercial surfactants of the Brij series, Neodol series, and the LP series were used. Small-angle x-ray scattering gives evidence for the presence of microstructures in these solutions and, thus these systems are true microemulsions at temperatures above the melting point of the alkane. Systematic paths to move from aqueous to nonaqueous microemulsions are outlined. These results are utilized in optimizing the performance requirements of an inkjet printing application.     

The Synthesis of l-Ethyl-1''''-(4-vinylbenzyl)-4, 4''''-bipyridinium Chloride and Iodide and its Electrochromic Property

A new compound 1-ethyl-1'-(4-vinylbenzyl)-4, 4'-bipyridinium chloride and iodide has been synthesized. The cyclic voltammogram and impedance spectra indicated that a layer of viologen's electrochromic (EC) film could be deposited on conductive ITO glass working electrode. With polyelectrolyte as ionic conduction layer, solid EC devices based on this compound have been assembled and their thickness was about 2.35 mm. When different voltages were added, they showed blue or violet red color. After optimization, its response time was less than 50 ms, the number of redox circulation was over 107 and the color of coloration states could be kept for 3 days. This kind of EC device can meet the demand of electronic ink.