Abstract:This article summarizes the research status on deep processing technology of ethylene oxide, according to the rapid development and domestic market demand of deep processing products from ethylene oxide. It was emphatically introduced the technical progress including catalyst research, process and equipment improvement of representative products such as ethylene glycol, ethanolamine, polyether surfactant and glycol ether. Finally, some existing problems and reasonable suggestions were proposed.

Abstract:Monodisperse water-in-oil (W/O) emulsions are widely used in the numerous fields including foods, cosmetics, pharmaceutics and synthesis of polymeric microspheres and microcapsules and so on. The main methods and fundamental principles for preparing monodisperse W/O emulsions were summarized in this paper. Moreover, applications of monodisperse W/O in the synthesis of monodisperse thermo-sensitive and biodegradable polymeric microspheres and microcapsules were also introduced briefly. This paper is anticipated to provide some guidance for the fabrication of monodisperse W/O emulsions.

Abstract:Poly(1,3-propanediol-sebacate) oligomers were synthesized under relatively low temperature without any catalysts. GPC chromatograms showed that the coarse products often presented multi-components because of the excess 1,3-propanediol, but they gradually became homogeneous with the dosage decrease of 1,3-propanediol. FTIR spectra demonstrated that the main chains of the oligomers were formed by ester bonds, and the contents of hydroxyl groups tended to drop down as the molar ratio of monomers decreased and the second-stage reaction was carried out. Based on the 1HNMR analysis, it was found that the actual molar compositions of the oligomers were much lower than the initial molar ratios of monomers, and their molar mass ranged from 967.14 to 3970.49 g/mol, and the terminating degrees from 1,3-propanediol were within 38%~66%. The oligomers were expected to be used as nontoxic, environment-friendly and biodegradable plasticizers in preparation of chewing guns.

Abstract:Based on classical Stöber reaction, Silica particles were synthesized. These particles were non-crystalline solid granules with smooth surfaces and good monodispersity. The average size was 900±50 nm. Rare earth ions combined with the free phosphate ions hydrolyzed by tripolyphosphate (TPP) on surface of silica, the SiO2-LnPO4 (Ln=La: Ce, Tb) core-shell particles were thus obtained by homogeneous precipitation method and their size were 1.5±0.1 μm. The core-shell product had obvious fluorescence property and the maximum fluorescent emission peak was at 547 nm. With no rare earth element in the core and with uniform morphology and size, this SiO2-LnPO4 material could decrease the synthetic cost and improve the application property of the LnPO4 green phosphor. This material might have important application prospect in the illumination field.

Abstract:Hydroxypropyl cellulose(HPC) with RAFT agents were used to synthesize a grafted poly(N-isopropylacrylamide) (PNIPAM) hydrogel via reversible addition-fragmentation chain transfer (RAFT) polymerization. The influences of HPC molecular weight, density of RAFT molecule on the HPC chain and the component ratio of HPC over NIPAM, to the properties of hydrogels were investigated. It was found that the hydrogels from RAFT polymerization show the fold, thin wall, porous and super-porous net structure, which led to the improved swelling and deswelling properties; Meanwhile HPC didn’t show the influence on the lower critical solution temperature (LCST) and the sensitivity but improved the hydrogels’ mechanical property by the rigidity of HPC molecule compare to the comb grafted PNIPAM hydrogels and conventional hydrogels, and made an attractive future in applications.

Abstract:The cationic Polyurethane/Polyacrylate composite emulsion was prepared by HDI, PTMG1000, N-MDEA, styrene (St), butylacrylate (BA), Hydroxyethyl acrylate (HEA). The effects of the content of HEA, MDEA, and Polyacrylate on performance of the films were investigated. And it was characterized by the method of IR, TGA. When w (HEA) = 6%, w (MDEA) = 6%, w(Polyacrylate)=40%, the coating can achieve the optimize performance. The results showed that water absorption was 9.26 %, the tensile strength was 35.6MPa, the elongation at break was 337%.

Abstract:Attapulgite clay /xanthan gum-g-acrylic organic-inorganic composite super absorbent resin was prepared by solution polymerisation. The influence factors of synthesising composite super absorbent resin such as the monomer concentration of acrylic acid, initiator amount, degree of neutralization of acrylic acid, amount of AC, amount of crosslinking agent and polymerization temperature were studied .Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), X-ray diffraction (XRD) and differential scanning calorimetry (DSC) were used on characterization of the compound super absorbent resin. The results showed that: The poly-acrylic acid molecules linked to the molecular chain of xanthan gum through graft co-polymerisation, AC and the copolymer occurred organic-inorganic composite, the preparation of attapulgite clay/xanthan gum-g-acrylic acid super absorbent absorbent resin has good properties of water absorption and salt resistance,the retention performance was inproved in high temperature, percent grafting up to 137.2%grafting efficiency up to 83.6%,and the highest water absorption up to 896ｇ/ｇ-1, normal saline is up to 126.3ｇ/ｇ-1.

Abstract:In order to increase the moisture permeability of the polyurethane synthetic leather and get comfortable feel of it, in this paper five different porogens such as polyethylene glycol, modified cellulose, carbamide, polyvinylpyrrolidone and wood flour which affected the moisture permeability and mechanical properties of polyurethane microporous films were studied. And the influence of the dosage and difference of porogens were investigated though the moisture permeability, hygroscopic property, mechanical property of polyurethane microporous films, and SEM. The results indicated that the moisture permeability, hygroscopic property, porosity and feel of the polyurethane microporous films were greatly improved. And the moisture permeability, moisture absorption rate and porosity could achieve 1876.81g?mm/(m2?24h)，180% and 7.55% respectively, which increased by 315%，350% and 358% respectively. The polyethylene glycol, carbamide, wood flour had the excellent performance.

Abstract:Abstract: Using the ultrafiltration method to divide Shixian sodium lignosulfonate (LS) into five molecular weight range Fractions. The gel permeation chromatography and potentiometric titration testing shows the relative molecular weight of LS is increased with the Fraction, from 2360 to 19852; the sulfonic acid content of LS is decreased with the Fraction, which is decreased from 2.66 mmol / L to 0.98 mmol / L. Using five Fractions’ LS as dispersants to prepare 40% myclobutanil WPs and test their performances, the results shows that WP’s performances are best when using the LS of Fraction4 (30000-50000) as dispersant, the suspension rate before and after heat storage are 85.36% and 81.38%, the average particle size of WP suspension’s disperse phase are 6.30 μm and 9.19 μm respectively, the 2 h suspension sedimentation layer thickness and the stability index of WP(after accelerated aging) are 0.311 mm and 3.85.

Abstract:The supecritical carbon dioxide fluid ectraction(SFE-CO2) of essential oil and oleoresin from black pepper is presented in this study. Firstly, low pressure and temperature was adopted for selective extraction of black pepper essential oil. Then, high pressure and temperature was introduced in the presence of a polar entrainer for black pepper oleoresin riching in piperine. Moreover, black pepper essential oil obtained by supercritical CO2 extraction was purified by molecular distillation into colorless and tasteless product which could be used in the daily chemical industry, aroma components were also analyzed by GC-MS. The experimental results showed that the optimum conditions of supercritical CO2 extraction of black pepper essential oil were 10MPa of pressure, 35℃ of temperature and 2h of time, the yield was 3.01%. The optimum conditions of oleoresin extraction were m(raw material):m(95% ethanol)=1:1, 30MPa of pressure, 50℃ of temperature and 4h of time, the yield was 7.88%, the piperine content in oleoresin exceeded 65%.

Abstract:A series of task-specific ionic liquids (TSILs) with imidazolium and pyridinium that bear an alkane sulfonic acid group were synthesized. The synthesis of benzyl octanoate used benzil alcohol and octanoic acid as reactants and these TSILs as catalyst was investigated. Effect of anion and cation of TSILs on their catalytic performance was also investigated. The results showed that the conversion of octanoic acid reached 95.3% by using [PSPy]HSO4 as catalyst under conditions of n octanoic acid : n benzil alcohol= 1:1.5, 20 mol% of octanoic acid for TSILs, 120℃ and 2.5 h. In addition, the [PSPy]HSO4 exhibited excellent stability and catalytic activity. It could be reused ten times without considerable loss of activity and still had a conversion of 94.2%.

Abstract:Mesoporous Ni-CaO-ZrO2 nano-composites with different Ni content derived from co-precipitation were tested in CH4-CO2 reforming and characterized by means of N2-adsorption/desorption, X-ray diffraction, Temperature programmed reduction/oxidation. It was found that catalysts with lower Ni contents showed better mesoporous structure, and such framework could enhance the dispersion of Ni particles and avoid their sintering during reaction, which in turn promoted the stability of catalysts. however, activity of the catalyst decreased drastically if the content of Ni was too low. On the other hand, too higher lever of Ni content would cause the collapse of the mesoporous structure, sever sintering and so-caused deactivation were happened during reaction.

Abstract:In present study, the characteristics of eighteen macroporous resins for the static adsorption and desorption of hypericin from Hypericum perforatum L.extracts have been evaluated. And then the effect of different pH values of extract solution on the adsorption capacities of hypericin on NKA-9 resin has been explored. The Langmuir isotherm was used to describe the interactions between solutes and resins at 25℃. The results showed that a week polar resin, NKA-9, with the adsorption capacity of 12.45 mg/g (dry resin) offered the higher adsorption and desorption capacity for hypericin than other resins. The pH had a great effect on the adsorption process, and the optimum pH was 4. The adsorption process of NKA-9 at 25℃fit best to the Langmuir isotherm, proved to be single molecule adsorption.

Abstract:The chemical constituents of the frutis of Citrus medica L．were isolated and purified by silica gel, sephadex LH-20 and RP C-18 chromatographic methods and their structures were elucidated mainly by NMR and MS evidences. Thirteen components were obtained and identified as limettin (1), scopoletin (2), β-sitosterol (3), obacunone (4), nomilin (5), limonin (6), isoobacunoic acid (7), hesperetin (8), daucosterol (9), 1-O- ` ( β-D-glucopyranosyl ) – (2S , 3S , 4E , 8E) – 2 - [(2'R) -2′- hydroxyhexadecanoylam ino ] -4.(E), 8(E) - octadecadiene-1, 3-diol (10), pruning (11), naringin (12), hesperidin (13).

Abstract:Synthesis of n-butyl isobutyrate from isobutyric acid and n-butyl alcohol with NKC-9 cation exchange resin as catalyst was studied. The effects of reaction conditions,such as mole ratio of n-butyl alcohol to isobutyric acid,NKC-9 catalyst dosage and reaction time were examined. The kinetic data of this system were measured in a batch reactor.The optimum reaction conditions were found as:mole ratio,n(n-butyl alcohol):n(isobutyric acid)=1.4:1;NKC-9 cation exchange resin as catalyst dosage,4.0%(mass of catalyst relative to total mass of isobutyric acid and n-butyl alcohol);reaction temperature,≤125℃;reaction time,2.0 h.Conversion of isobutyric acid by the process achieves 97.6%,and activity of catalyst Can be maintained at 96.4％ conversion after being used 5 times.At the same time, the apparent kinetic modle of esterification was established,and the equation of reaction rate was derivated .

Abstract:The acyloin mixture which mostly consists of C5 acyloin was synthesized from acetaldehyde and propional by cross-condensation under the catalysis of 3-ethyl-5-(2-hydroxyethyl)-4-methyl-1,3-thiazolium bromine.2,3-Pentanedione was prepared through oxiding the mixture indirectly by hydrogenperoxide and separating.The optimized cross-condensation reaction conditions: m（acetaldehyde）：m（propional）: m(catalyst)：m(sodium carbonate)=110：90:2:1；reaction temperature was 120~130℃；the pressure was 1Mpa.the conversions of acetaldehyde and propional were 94% and 95% respectively, The yields of C5 acyloin was 48.8%, the total condensation products amount to 90%.In the presence of concentrated sulfuric acid, acyloin mixture were oxidized by 30%H2O2/ FeSO4·7H2O, m（FeSO4·7H2O）：m（sulfuric acid）：m（water）：m（acyloin）：m（30%H2O2）=11：2：4：2：3, the yield of 2,3-pentanedione relativing to the gross weight of acyloin was 45.5%，the total yields of vic-diketones amount to 84%. 2,3-Pentanedione、butanedione and 3,4-hexanedione can be obtained with purities more than 98% by atmospheric distillation, the iron salt could be reused without obviously decrease of the yields of vic-diketones.The method did not use organic solvent and used H2O2 as oxidant indirectly.It was a green process.

Abstract:Five strains of Endophyte were purified from the endophyte in fresh lichees, One of them was selected as a sample because of its fragrant metabolite and speedy growth. The metabolite which was analyzed by GC-MS showed that the fragrance components were mainly from β-phenylethyl alcohol, 2,3-butanediol, furfural and n-hexadecanoic acid. The product of fermented tobacco flavor Lizhi-A from this kind of the sample strain had ability to make smoke more gentle, smooth and tobacco tasted gently, tenderly and rich.

Abstract:The objective of this investigation was to study the effect of pH on antioxidative activity of Maillard reaction products (MRPs) from the L-ascorbic acid(ASA)–L-proline(Pro)/L-alanine(Ala) model systems. MRPs were prepared by heating the solution containing ASA and Pro/Ala adjusted to different pHs (4.0, 5.0, 6.0, 7.0 and 8.0) at 140℃ for 2 h. The antioxidative activity of MRPs was evaluated by reducing power, 1,1-diphenyl-2-picryl-hydrazyl(DPPH) radical-scavenging activity and Fe2 chelating activity. The results indicated that reducing power and DPPH radical-scavenging activity reached a maximum with initial pH5. An increase in Fe2 chelating activity of MRPs derived from ASA-Lys/Met model systems was observed as the initial pH increased. Moreover, reducing power of MRPs correlated well the UV-absorbance at 294nm.

Abstract:Mono-glyceride trimaleate(MG) was prepared by esterification from glycerol and maleic anhydride(MA). MG was employed as allyl branching monomer to copolymerize with acrylic acid and the initiator ammonium persulfate to prepare branched copolymers(BPMGs) by the free radical water emulsion polymerization. The structure of MG and BPMG was characterized by 1H NMR. The influence of monomer ratio, the dosage of initiator, the type of branched monomer and feeding mode on double bond conversion rate of MG was investigated by orthogonal tests experiment. The result shows that, double bond of branched monomer has better conversion rate when branched monomer is MG-30, n(AA):n(MG)is 6:1, the reaction temperature 80 ℃, reaction time is 2.5 h, the mass of initiator ammonium persulfate is 6%(base on tatal mass of reaction meterials). The result of application shows that, the product has better filling quality and physical properties. TEM showed the fiber bundles processed by the branched copolymer was dispersed sufficiently.

Abstract:The synthesis, alcoholysis and aminolysis of α-methyl methacrylate ester - maleic anhydrid - vinyl acetate (AMV) was described and characterized in this work. The solidifying point (SP) and cold filter plugging point (CFPP) depression effects of the AMV terpolymer and its alcoholvsis and aminolysis products were determined, and the terpolymers were charactered by IR. The AMV terpolymer was synthesized at the molar ratio (4: 1: 2) of α-methyl methacrylate ester, maleic anhydride, vinyl acetate with 1.2% initiator at 85℃ for 5 hours. With 0.1% additive dosage , the AMV terpolymer can reduce the SP and CFPP of three kinds of diesel oils (obtained from PetroChina Lanzhou Petrochemical Company) by 10℃, 16℃ ,11℃ and 1℃ ,3℃ ,2℃, respectively. The alcoholysis and aminolysis of the AMV polymer were also carried out. With 0.1% additive dosage, the aminolysis products through octadecylamine could reduce the SP and CFPP of diesel oils by 10℃, 14℃ ,9℃ and 2℃ ,5℃ ,3℃, respectively.

Abstract:7-hydroxy-4-methyl coumarin is an important chemical intermediate. DT-852 macroporous sulfonic acid resin is developed as efficient catalyst in synthesis of 7-hydroxy-4-methyl coumarin technology. Results show: DT-852 macroporous sulfonic acid resin has well catalytic activity; The better synthesis conditions for 7-hydroxy-4-methyl coumarin were: reaction temperature 105 oC and reaction time 2.5 h, 1.0 g catalyst, material ratio ethyl acetoacetate to resorcinol 1.0, the yield was 93.8%, w (7-hydroxy-4-methyl coumarin) = 98.27% (HPLC). Catalyst can be reused many times. Product was verified with mp and IR.

Abstract:β-naphthyl methyl ether was synthesized in the presence of a new kind of cheap and effective environmental friendly solid catalyst H2SO4/Carbon under ultrasonic irradiation. The influences of catalyst’s dosage, methanol consumption , the reaction time，ultrasonic power on the yield of product have been investigated. Get the optimal reaction conditions as follow: the mole ratio of β-naphthol and methanol is 1:6, amount of catalyst is 7mol%，ultrasonic power is 200W，reaction time is 15min and temperature is 80℃. Under the optimal reaction condition, the yield of β-naphthyl methyl ether is 98.3%. The reaction condition is mild, the method is simple and efficient.