异氰尿酸三烯丙酯交联共聚物的合成及其色谱性能的研究(Ⅰ)

用异氰尿酸三烯丙酯作交联剂,以醋酸乙烯酯为单体,合成了交联共聚物,测定了它们的比表面积、平均孔径、孔容及溶胀性能,确定了合成的最佳条件;同时把共聚物作为气相色谱固定相,考察了其柱效、峰对称性及分离度等性能,该共聚物可快速分离烷烃、芳烃、醇等。     

交联乙烯吡咯烷酮—三烯丙基异氰尿酸酯共聚物的合成及其结构性能研究（Ⅰ）

以乙烯吡咯烷酮为单体、三烯丙基异氰尿酸酯为交联剂会成了一系列新型强亲水性大孔吸附树脂．测定了它们的孔结构参数，讨论了交联度、混合致孔剂的用量及性质诸因素对树脂的比表面积、孔容、平均孔径等结构性能的影响．     

Studies on Effect of Tri(2-hydroxypropyl), Tri(2-hydroxybutyl) and Tri(hydroxythiodiethylene) Borates on Thermal and Heat Properties of Rigid Polyurethane-Polyisocyanurate Foams

Effect of tri（2-hydroxypropyl）, tri（2-hydroxybutyl）and tri（hydroxythiodiethylene） borates （BT2HB, BT2HP and BTHET） on the thermal and heat properties of the rigid polyurethane-polyisocyanurate （PUR-PIR） foams was investigated： Increasing amounts of BT2HB and BT2HP in the foam composition, from 0.05 to 0.4 of chemical equivalent, caused increases in the softening point, the temperature of the first mass loss, the extrapolated tempera- ture of the main mass loss foam and temperature of the highest rate of the mass loss. In the case when BTHTE was added to the foam compositions, the lower increase in the mentioned above characteristic temperatures was observed as compared to those of standard foam （without borate added）.     

大孔乙酸乙烯酯－异氰尿酸三烯丙酯共聚物珠体的合成与结构表征

以乙酸丁酯和２００＃汽油为混合致孔剂，采用悬浮聚合方法合成了大孔乙酸乙烯酯－异氰尿酸三烯丙酯共聚物珠体。对其孔结构、表面结构、溶胀性能和热稳定性进行了详细研究。     

Vp/TAIC共聚物的合成、结构及对麻醉药品吸附性能研究

乙烯基吡咯烷酮为单体(Vp),三烯丙基异氰尿酸酯(TAIC)为交联剂,在混合致孔剂二甲亚砜和乙酸丁酯存在下,用悬浮聚合法制得一系列交联大孔(VpT)共聚物。测定了共聚物的孔结构参数及其对吗啡等麻醉药物的吸附性能。     

聚合物担载相转移催化剂用于三(环氧丙基)异氰尿酸酯的合成

三(环氧丙基)异氰尿酸酯(以下行称TGIC)是一种性能优良的新型环氧化合物,它作为聚醋粉末涂料的交联固化剂,具有独特的耐热、耐电弧和耐光老化的优点.目前国内外合成均采用季铵盐作催化剂,收率可达77％.但这类催化剂价格较高,且不易回收,季铵盐本身也极易吸潮分解,不易保存.为此,本文首次将非生物活性催化剂连接在聚合物载体上,制成聚合物担载相转移催化剂用于TGIC的合成.实验结果表明,其中季铵盐聚合物催化剂活性高,TGIC产率可达76.5％,聚合物聚乙二醇催化活性次     

三烯丙基异氰尿酸酯-醋酸乙烯酯交联聚合物研究(Ⅲ)——致孔剂对共聚物结构的影响

醋酸乙烯酯与异氰尿酸三烯丙酯在不同致孔剂如正辛烷、正庚烷、十氢化萘或醋酸丁酯存在下,用悬浮聚合法得到一系列大孔共聚物,测定和比较了这些共聚物的孔结构。实验结果表明:致孔剂的分子结构和用量对共聚物孔结构有显著的影响,其平均孔径最大可达5000Å,并初步讨论了致孔机理。     

VT共聚物上DNA的固定化研究

本文采用醋酸乙烯醋(VAC)／异氰尿酸三烯丙酯(TALC)交联共聚物为载体。经环氧载丙烷活化处理使DNA键合到载体表面。讨论了DNA的固定化方法和条件以及DNA在共聚物表面的形态变化，结构特征和热稳定性，同时对其吸附特异性和吸附功效作了初步检测。     

反渗透复合膜的制备和脱盐功能

以玻璃化温度高、强度大、易磺化和耐酸碱的带酞侧基的聚芳醚酮(PEK-C)为支撑膜材料,研究了PEK-C铸膜液组成及复合液配比等对PFT反渗透复合膜(PFT ROCM)制备及其脱盐功能的影响。 试剂与材料 糠醇(FA):化学纯。用前精制,三(2-羟乙基)异氰尿酸酯(THEIC)。熔点134～136℃。聚乙二醇-400(PEG-400):化学纯。DMF,DMAc,N-甲基吡咯烷酮(NMP)为分析纯,经脱水精制。异丙醇、硫酸为分析纯。十二烷基磺酸钠(SLS)化学纯。含酞侧基的聚醚醚酮PEK-     

含DNA配体的VT吸附剂结构及其血液相容性研究

本文以异氰尿酸三烯丙酯 TAIC)为交联剂,醋酸乙烯酯(VAC)为单体合成的共聚物(VT),经皂化和活化后,固载上DNA,即得含DNA配体的VT吸附剂。测定了各产物的物理性能,表面形态,红外光谱和血液相容性。实验结果表明:聚合物具有较大平均孔径,皂化后亲水性增强,随活化而使比表面积增大,孔分布趋于均匀,固载DNA的能力高,致使最后产物表面DNA覆盖致密程度高,考察其血液相容性良好,对血小板粘附率约为10％,对白细胞无破坏,每克吸附剂清除抗-DNA蛋白2小时可达60％以上。     

Isocyanurate anion radicals via electron-initiated cycloaddition of isocyanates

Room temperature sodium metal reductions of alkyl isocyanates lead to the rapid electron-initiated formation of alkyl isocyanurate anion radicals, which exhibit EPR coupling to only two equivalent nitrogens. Reduction of (13)C-enriched ethyl isocyanate reveals that the odd electron localizes in the pi system of one carbonyl in the isocyanurate ring. EPR line-width alternation effects indicate that at least two stable conformers are in rapid equilibrium undergoing fast exchange.     

气相色谱法测定三环氧丙基异氰尿酸酯中环氧氯丙烷残留量

A simple,rapid and reliable method for the determination of trace epichlorohydrin residue in tris (2 ,3-epoxy propyl) isocyanurate for industrial use by gas chromatography is described. The gas chromatographic separation was achieved on a glass colunin packed with 4% SE-30/Chromosorb W HP at a column temperature of 80℃.The detector was FID and the carrier gas was N2.Three preducts from various manufacturers were analyzed by this methed with the coefficient of variation of 2. 2%-5. 2%。     

Adsorption of an Isocyanurate Silane on E-Glass Fibers from Ethanol and Toluene

Isocyanurate silane was adsorbed onto E-glass fibers from toluene and ethanol in order to gain a better understanding of the surface processes at the silane-glass interface of composite materials. Use of DRIFT (diffuse reflectance infrared Fourier transform spectroscopy), XPS (X-ray photoelectron spectroscopy), and TGA (thermogravimetric analysis) techniques allowed for the qualitative and quantitative determination of such surface processes. The degree of chemisorption of the silane to the glass surface was investigated by using a sequential washing procedure with solvents characterized by solubility parameters differing from each other. All the analyzing techniques indicated that coupling between the glass and the silane occurred. However, the structure of the silane film depends considerably on the solvent and on the subsequent washing procedure. Copyright 2000 Academic Press.     

三烯丙基异氰酸尿酯－二乙烯苯－醋酸乙烯大孔共聚物的合成及其醇解反应

根据文献查得的Ｑ、ｅ值，计算了三烯两基异氰酸尿酯－二乙烯苯－醋酸乙烯三元共聚体系的竞聚率，预测了它们进行共聚的可能性．以甲苯和汽油为致孔剂，采用悬浮聚合的方法合成了此三元大孔共聚物，并研究了致孔剂用量、交联度等对共聚物孔性能的影响。实验发现，此共聚体系在适当条件下，可以制得很高比表面积的大孔共聚体，比表面积可高达１２１４ｍ２／ｇ。对合成的共聚物又进行了醇解反应，得到了含羟基的共聚体。     

Synthesis and Properties of Onium Salts of Isocyanuric Acid. Crystal Structure of Tetraphenylphosphonium Isocyanurate

Previously unknown tetrabutylammonium and tetraphenylphosphonium isocyanurates were prepared, and their IR spectra were examined. The crystal structure of tetraphenylphosphonium isocyanurate was determined.__________Translated from Zhurnal Obshchei Khimii, Vol. 75, No. 3, 2005, pp. 417–421.Original Russian Text Copyright © 2005 by Flakina, Chekhlov, Kushch, Lyubovskaya.     

Preparation and Crystalline Structure of Dihydrate of <Emphasis Type="Italic">hemi</Emphasis>-(Diazonium-18-crown-6) Isocyanurate of Isocyanuric Acid

Crystalline dihydrate of hemi-(diazonium-18-crown-6) isocyanurate of isocyanuric acid, 0.5[H₂DA18K6]²⁺?(C₃H₂N₃O₃)^??C₃H₃N₃O₃?2H₂O, was prepared and investigated by X-ray crystallography. In the given structure the dication DA18K6 is center-symmetric and possesses crown conformation of approximate D_3h symmetry. Molecule of isocyanuric acid and its anion are nearly planer. This molecule possesses approximate D_3h symmetry and its anion possesses approximate C_2v symmetry. With sufficient precision were determined geometrical parameters (bond lengths, bond angles etc.) of ions and molecules and was determined their packing in the given crystalline structure in which there is developed system of intermolecular (interion) hydrogen bonds.     

辣根过氧化物酶电极在H2O2分析中的应用

辣根过氧化物酶(HRP)能催化过氧化氢与氢供体间的氧化还原反应,是当今生物传感器研究的热点之一.HRP分子内含有α-D-葡萄糖和α-D-甘露糖,是一种糖蛋白,在pH 7.0下,能与具有识别α-D-葡萄糖和α-D-甘露糖功能的外源植物凝集素伴刀豆球蛋白(Con A)结合.通过Con A与HRP之间的识别作用在半胱氨酸修饰的金表面构造HRP多层自组装膜电极,以亚甲蓝(MB)溶液为介体,对电极进行了电化学表征,并用该酶电极测定了过氧化氢浓度.