Abstract:In the process of tertiary oil recovery (EOR) need to use the surfactant. Traditional surfactant because of its "heat resistance, salt resistance and interfacial properties limited" already cannot satisfy the needs of oil and gas field development. Based on an organic siloxane double end capping agent Gemini surfactant (Gemini) can well solve the above problem is increasingly respected by the scientists. In this paper, on the basis of previous work, systematically summarizes the used to design synthesis of new type twin displacement with new material intermediates---- Organic siloxane research status and progress of the double end capping agent. The article mainly introduces the displacement with new material important intermediates (several reactive end capping agent) the design of the synthesis and performance, and prospects the active end capping agent on the development direction of synthetic oil displacement with new materials.

Abstract:In order to explore a simple method for preparing an anti-smudge coating. Herein, two fluorinated binary random copolymers with low surface energy was synthesized by solution polymerization. They are Poly [2-(Perfluorooctyl)ethyl methacrylate–r-3-Acryloxypropyl Trimethoxysilane](PFOEMA-r-APTMS) and Poly[2-(Perfluorooctyl)ethyl methacrylate-r-3-(Methacryloxy)propyltriethoxysilane](PFOEMA-r-MPTES), respectively. They were diluted into different concentration solution and sprayed onto glass surface to prepare anti-smudge coatings. The chemical structure of the polymer was characterized by combination of infrared spectroscopy (FTIR) and nuclear magnetic resonance (1H NMR). The surface roughness was measured by atomic force microscopy (AFM), the water contact angle and wear resistance of coatings was also measured. Meanwhile, the relationship between contact angle and the concentration of the polymer solution, as well as the wear resistance, transparency and anti-smudge performance of the coatings under different humidity were studied. The results showed that the wear resistance of coating coated with PFOEMA-r-MPTES was much better than that coated with PFOEMA-r-APTMS. When the mole ratio of PFOEMA to MPTES was 1.5, the dilution concentration of copolymer was 10 mg/mL and the glass treatment humidity was 60%, the glass coated with PFOEMA-r-MPTES shown the best anti-smudge performance, hydrophobicity, wear resistance, as well as high transparency.

Abstract:A macroinitiator PEG6000-Br, was synthesized by esterification reaction of PEG6000 and α-Bromoisobutyryl bromide. By using ATRP method, a symmetrical triblock polymer with the same degree of polymerization, poly(2-(Dimethylamino)ethyl methacrylate)-PEG-poly(2-(Dimethylamino)ethyl methacrylate) (PDM165-PEG165-PDM165), was synthesized. The structures were characterized by FT IR and 1H NMR. The CO2/N2 switchability was proved by pH and conductivity, after 5 min of bubbling CO2, pH decreased from 7.74 to 5.47 and the conductivity increased from 0.176 mS/cm to 0.405 mS/cm rapidly. Then, after 30 min of bubbling N2, the pH recovered to the initial 7.74 and the conductivity decreased to the initial value of 0.177 mS/cm smoothly. The self-assembled unilamellar vesicles-network transition was observed by cryo-TEM, thus result in enhancement of viscosity increase from 3 mPa•s to 12 mPa•s. The key mechanism of these changes is protonation of tertiary amine groups in PDM blocks and was proved by 1H NMR, the chemical shifts of H near N atom downfield from 2.3, 2.7, 4.1 ppm to 2.8, 3.2, 4.3 ppm, respectively.

Abstract:Microcapsules with infrared and microwave compatible stealth function (RAM-MCPCM) are prepared with the method of the seeded micro-suspension polymerization, which uses Poly(styrene-divinylbenzene) as wall material and lauric acid as core material, doping two different types of radar absorbing material (RAM), nano-Fe3O4 and reduced graphene oxide. The microstructure and properties of microcapsules are characterized and measured through differential scanning calorimeter (DSC), scanning electron microscopy (SEM), vibrating sample magnetometer (VSM) and vector network analyzer. The results indicate that the phase change microcapsules (MCPCM) prepared by the seeded micro-suspension polymerization are regularly spherical with smooth surface. With the core wall mass ratio of 1.5:1, the MCPCM have the best the latent heat of phase change and encapsulation ratio, 99.2J/g and 57.4% respectively. The morphology of the RAM-MCPCM which still have relatively high latent heat of phase change are a slightly convex spherical surface. With the coating thickness of 0.5mm The Fe3O4-MCPCM/epoxy coating at 5.25GHz reaches the maximum absorption peak of -0.54dB and the RGO-MCPCM/epoxy coating at 8.8GHz reaches maximum reflectivity of -1.21dB. Two types of coatings have a certain temperature control effect when the ambient temperature is elevated and they have the function of infrared and microwave compatible stealth.

Abstract:Polyhexamethylene adipate glycol (PHA), polybutylenes adipate glycol (PBA), isophorone diisocyanate (IPDI) and 2,2-dimethylolbutanoic (DMBA) as monomers, trimethylol propane (TMP) as crosslinking agent, and ethylenediamine as chain extender, a series of crosslinked waterborne polyurethane self-matting resin emulsion were prepared and then prepared them into films . The characteristic groups of emulsion were analyzed by FTIR. The morphology of surface and particles were investigated by SEM and TEM. And the glossiness, water resistance, acid and alkali resistance, and the thermodynamic properties of tatex film were also detected. The results showed that the film surface was rough, the average particle size was above 1000nm and the degree of gloss was about 2.0,these satisfy extinction requirement. When there was no crosslinking agent added, the tensile strength was 8.3MPa, Tg was -45℃and the temperature of the film decomposited 10% was 275.7℃. And water absorption rate in deionized water,acid or base solution were 29.1%、27% and 17.2%, respectively. When the mass fraction of crosslinker was 0.65%, the tensile strength increased to 21.4MPa, Tg increased to -40℃ and the temperature of the film decomposited 10% increased to 305.6℃. And water absorption rate in deionized water,acid or base solution were 3.2%、6.2% and 5%, respectively.

Abstract:The stable Ag NPs protected by chitosan oligosaccharide grafted with polyethylenimine (COS-g-PEI) were prepared, and the antibacterial properties were studied. First, COS-g-PEI was synthesized using ionic liquid 1-butyl-3-methyl imidazolium chloride（[BMIM]Cl）as solvent and catalyst, and 1, 1-carbonyldiimidazole as coupling reagent. Then, Ag NPs@-COS-g-PEI composite particles were prepared by in-situ reduction method using COS-g-PEI as stabilizer, sodium borohydride as reductant. The results of IR and 1H-NMR showed that COS-g-PEI was prepared successfully. And the results of UV-Vis and TEM showed that the stable Ag NPs@-COS-g-PEI composite particles were prepared. The antimicrobial properties of COS-g-PEI and Ag NPs@-COS-g-PEI for staphylococcus aureu and escherichia coli were evaluated by Kirby-Baner test and oxford cup method. Ag NPs@-COS-g-PEI showed the larger diameter of inhibiting zone than COS-g-PEI against staphylococcus aureu and escherichia coli no matter by Kirby-Baner test or oxford cup method. It is suggested that the antibacterial properties of COS and Ag NPs are combined together to give higher antibacterial ability.

Abstract:A series of biquaternary ammonium salt gemini surfactants with ester group was prepared with succinic anhydride,N,N-dimethylethanolamine,CnH2n+1Br (n=10,12,14,16,18) as raw materials.The structure of the obtained product were characterized by FTIR, 1HNMR and its solution properties were investigated with surface tensiometer, conductivity meter, fluorescence spectroscopy (FLD), optical contact angle measuring device and interface tensiometer. The results show that the GSn-EG-n was endowed with high surface activity. With the increase of hydrophobic chain length, the surfactants easily associated and aggregated to gether to form micelles, and the critical micelle concentration (CMC) of GS18-EG-18 decreased to 2.14×10-5mol/L. The minimum surface tension (γcmc) of 33.50mN/m was determined for GS14-EG-14. Moreover, by measuring the conductivity of the solution at different temperatures, it was found that the CMC value increased with the increase of temperature. The emulsification and wettability tests demonstrated that oil and water separation time of 180min in the emulsion system for GS14-EG-14, and its minimum contact angle on the PTFE of 69.3o were measured, indicating that GS14-EG-14 was possesssed excellent emulsifying power and wetting property. In the GS18-EG-18 system, the oil / water interfacial tension was reduced to 8.3×10-3 mN•m-1 for 28 min, and the final oil displacement efficiency was 54.2%.

Abstract:To investigate the influence of different monocarboxylic acids on the single-phase microemulsion region of a 1-butyl-3-methylimidazolium hexafluorophosphate(bmimPF6)/Tween80/toluene system, pseudo ternary phase diagrams consisting of bmimPF6, toluene and Tween80 at 25℃ in the presence of monocarboxylic acids were constructed, monocarboxylic acids used were CH3COOH, n-C3H7COOH, n-C5H11COOH,or n-C7H15COOH. Effects of monocarboxylic acid chain length and contents of n-C3H7COOH on the formation of single-phase region were investigated. Phase diagrams demonstrated the single-phase domain became smaller as the n-C3H7COOH /Tween80 weight ratio increased. Different chain length of monocarboxylic acids affected the area of single-phase regions, which was dependent on partitioning in biphasic ionic liquid and oil system and lipophilic property of the monocarboxylic acid. The single-phase area decreased as the monocarboxylic acid chain length increased. The single-phase region of the n-C3H7COOH-containing system was identified by electrical conductivity. There were oil-in-ionic liqid microemulsions(O/IL),bicontinuous(BC), and ionic liquid-in-oil (IL/O) microemulsions in the single-phase regions. In the IL/O microemulsions.Dynamic light scattering showed the droplets initially formed were linearly enlarged by the addition of bmimPF6. However, large-sized droplets with deviation from the linearity , appeared with successive addition of bmimPF6

Abstract:The polystyrene (PS) seed emulsion was firstly prepared by soap-free emulsion polymerization. Styrene-styrene sulfonate copolymer microspheres (PS-NaSS@PS) with core-shell structure was then synthesized through polymerization of sodium p-styrenesulfonate in the PS seed emulsion. Followed by acidizing, surface sulfonated microspheres (PS-HSS@PS) was obtained. Ethyl N-phenylformimidate was synthesized with PS-HSS@PS as a recoverable catalyst. Its catalytic performance was compared with p-toluene sulfonic acid and commercially available strong acidic cation-exchange resin. The results showed that the sulfonic acid group content and the addition amount of PS-HSS@PS had a great influence on the catalytic performance. The catalytic activity of PS-HSS@ PS with high sulfonic acid content was excellent and the yield was up to 97%. The activity of PS-HSS@ PS was higher than that of srong acidic cation-exchange resin (89% of the yield), and comparable to p-toluene sulfonic acid (98% of the yield). Furthermore, PS-HSS@PS had excellent recyclability and the yield could reach 97% after 5 cycles.

Abstract:The catalytic effects of N—hydroxyl phthalimide combined with various transition metal salts on the oxidative breakage ofα—O—4 bond of lignin by O2under mild conditions were studied. Benzyl phenyl ether was adopted as the model compound ofα—O—4 bond.It is found that the cupric salts showed the highestpromotion effect on the catalytic activityof NHPI among the soluble cobaltous, manganous, nickel and cupric salts. Oxygen pressure higher than 0.5MPadoes not necessarily enhance the conversion of benzyl phenyl ether, the activation of α—His most likelythe rate-limiting step.A reaction temperature over 110 ℃ would lead to over oxidation of benzyl aldehyde and phenol.Benzyl phenyl ether conversion of37.2% and the total selectivity of benzyl aldehyde and benzoic acidas high as 91.4% were achieved in acetic acid under the conditions of 110℃, 1.0MPa O2,15hours and using 20% NHPI and 2%Cu(NO3)2with respect to the amount ofbenzyl phenyl etheras the catalyst.

Abstract:Abstract: In order to obtain the optimal technology condition of magnetic solid base catalyst preparation. Design catalyst precursor mole ratio, reaction time, calcination time, calcination temperature three-level four-factor box—behnken experiment, Through the reducing polyethylene terephthalate yield from catalytic BHET was used as the response values for characterization of the catalyst, and research the optimal technology condition of reducing process. Result show that the response surface method was applied to determine the optimal technology condition of magnetic solid base catalyst preparation, it was highly significant（P< 0.0001）the quadratic regression mathematics model established according to experimental date. The optimal technology condition of magnetic solid base catalyst preparation was by following :the catalyst precursor mole ratio 1:3.94,the reaction time was 1.67h, the catalyst calcination time was 2.01h,the calcination temperature was 600℃.The condition of catalytic reducing process optimization was: the reaction temperature was 195℃, the reaction time was 4h,the catalyst dosage was 2.0%.The catalyst was characterized through the XRD,BET and SEM. Moreover through the IR and MS characterization methods confirmed that the reducing products was BHET.

Abstract:The thermodynamic behavior of the interaction between Quercetin and HSA is investigated by FS, UVS and MS. In fluorescence experiments, The interaction of quercetin and HSA, with C (quercetin) increased from 0 to 19.62×10-7 mol/L, the fluorescence intensity of HAS decreased from 844.3 to 461.4, the maximum emission wavelength from 340.7 nm to 338.6 nm, did not change significantly, and as the temperature increases from 298K to 303K, the quenching constant decreases from 4.66×105 L/mol to 2.69×105 L/mol the fluorescence intensity of HSA obviously decreases with the increase of quercetin concentration, but the maximum emission wavelength has no obvious displacement, and the quenching constant decreases with the raising of temperature. The results show that quercetin can strongly quench intrinsic fluorescence of HSA and quenching mechanism of quercetin with HSA is mainly a static quenching. In molecular simulation experiments, the quercetin molecule on Sudlow’s sites I and Sudlow’s sites II with the highest point are 6.41 and 7.36, in a total energy of -37.01 kJ/mol and -39.98 kJ/mol respectively, show stronger binding on site II and hydrogen bonding interactions are the major forces(bond energies are -10.41 kJ/mol and -12.34 kJ/mol respectively). And on the site I and site II, the distances from quercetin to the center position of fluorescent amino acid residues Trp214 are 1.36 and 2.40 nm, which are in agreement with the distance (3.04 nm) of calculated by the Förster’s non-radiative energy transfer theory.

Abstract:In this paper, the homogeneous diameter TiO2 microspheres were prepared by precipitation method. The structures and characterization of TiO2 microspheres were characterized by XRD, SEM, TG and reflectance spectroscopy. The factors of urea dosage, solvent types and dosage, titanium ion concentration, hydroxypropyl cellulose(HPC) concentration and synthesis time were investigated. The prepared conditions were: c(TiCl4)=0.2 mol/L，V(water):V(n-propanol)=1:3，c(TiCl4)=0.2 mol/L，n(Urea):n(TiCl4)=6:1，HPC concentration was 0.85 g/L, incubated 80 minutes at 90°C and calcinated at 500°C. The yield of TiO2 microspheres was 87.7%.The monodisperse particles were TiO2 and the diameter could reach 2~3 μm with a excellent uniformity which were characterized by XRD and SEM. Furthermore, the reflecting/spreading bifunctional layers prepared with the TiO2 microspheres were studied. The results showed that the reflectance of the bifunctional layer was greater than 90.7% in the range of 400~780 nm. It formed a uniform colour spot after serum spread through bifunctional layer and reacted in reagent layer, which indicated a homodisperse of serum and an excellent reproducibility of this bifunctional layer.

Abstract:A series of novel aromatic alkylamine compounds were designed and prepared from the starting materials of 1,1'-(4-chlorobutylidene)bis(4-flourobenzene) and dibenzoic acid through a serious of coupling reaction, and the structures were characterized by 1H NMR,13C NMR and MS. Biological evalua- tion in vitro were evaluated by human prostate cancer cells (DU145、PC3) , breast cancer cells (MCF-7、MDB-MB-231、MDB-MB-453) and 926 by MTT assay．The results indicates that T3 has the best biological activity for MDB-MB-231(IC50=17.30μM) as well as T4 (IC50=19.07μM). However, the IC50 of 926 cells were shown the high toxicity on normal epithelial cells (IC50: 19.20, 26.37, μM). Compounds T7 had inhibitory effect against breast cancer cells(IC50: 52.03, 49.74,30.09, μM) and had a low toxicity on 926 (IC50>50).

Abstract:Lignin was extracted from bamboo (Dendrocalamus latiforus) shoot shell by acetosolv process. The surface microscopic characteristic, crystalline characteristic, thermostability, moisture-absorbing characteristics and antioxidant activities of acetic acid lignin (AL) were investigated and compared with the same source of cellulose residues and coarse dietary fiber. The results showed that the AL was spherical and coarse surface with many pits, with amorphous structure，good thermal stability and low moisture absorption. In terms of the DPPH radical scavenging activity and ferric reducing antioxidant power (FRAP), AL showed stronger antioxidant activity than the commercial synthetic antioxidant BHT. But there was no significant difference in the ABTS free radical scavenging ability of AL and BHT. The antioxidant capacity of AL were significantly higher than that of the same source the cellulose residue coarse dietary fiber. Therefore, AL has the potential to be applied to antioxidants.

Abstract:TiO2 hollow microspheres has been successfully synthesized via a solvothermal method using tetrabutyl titanate as precursor. The TiO2 hollow microspheres were characterized and analyzed by X-ray diffraction(XRD),electron microscope scanning (SEM), transmission electron microscope(TEM), and N2 adsorption-desorption. The photocatalytic degradation performance was evaluated under the condition of methyl orange(MO) simulating wastewater. The results showed that TiO2 hollow microspheres were nanometer anatase, which is formation of hollow structure composed of nano crystalline self-assembly. The diameter of the TiO2 hollow microspheres was 0.4~0.5 μm. The TiO2 hollow microspheres has mesoporous structures and a high specific surface area, when the methyl orange solution with 15 mg/L of initial mass concentration under UV light using TiO2 hollow microspheres for 80 min，the degradation rate of methyl orange can reach 95%.

Abstract:In this paper, inhibitor PPGAZMA obtained by the modification of PPG with maleic anhydride (MA) was obtained by the free radical polymerization of acrylic acid (AA) and acrylamide (AM) to obtain the phosphorus-free scale inhibitor AA-AM-PPGAZMA. The synthesized phosphorus-free scale inhibitor was subjected to static calcium sulphate test. Can be AA: PPGAZMA: AM = 4: 3: 1 (molar ratio), the effect of calcium sulfate scale effect of the best, at 3ppm resistance to calcium sulfate scale effect of 96%, also investigated the amount of initiator on the scale inhibitor. The effect of different ion concentration on scale inhibitor was investigated. Calcium sulphate scale was test by scanning electron microscopy (SEM). The scale inhibitor AA-AM-PPGAZMA significantly changed the morphology of calcium sulfate scale. AA-AM-PPGAZMA is a new type of scale inhibitor with industrial application prospect.

Abstract:Ultrasonic phase transfer catalysis system was developed for synthesis of 1-phenyl-1-cyclopropanecarbonitrile and its derivatives. Take the eneacetonitrile as the research model, the reaction conditions such as ultrasonic frequency, solvent, dosage of solvent, dosage of KOH, reaction time were studied. Results showed that the optimum reaction condition was as follows: 40 kHz, with 20 mL toluene as solvent, KOH and benzeneacetonitrile mole ratio of 10:1, reaction time 4 h. With yield of 95.6%, the 99.3% conversion was achieved. With high conversion (≥92.3%) and selectivity (≥92.2%), a variety of derivatives were synthesized. The system was also applied to the transformation of heterocyclic nitrile. Using 2-thiopheneacetonitrile as substrate, the 1-(thiophen-2-yl)cyclopropanecarbonitrile was synthesized with 95.2% conversion and 97.8% selectivity.

Abstract:In order to solve the problem of microbial flooding in Shengli Oil Field, the efficient microbial SZ2 was cultivated by using glucose, peptone, yeast extract, dipotassium hydrogen phosphate and sodium chloride. The effects of microbial SZ2 on the viscosity, composition, oil-water interface properties, emulsifying properties and wettability of crude oil were analyzed by high temperature and high pressure rheometer, bar thin layer chromatograph, spinning drop interfacial tensiometer and dynamic contact angle measuring instrument, and the interface effect of microorganisms was studied. The results showed that the microbial SZ2 reduced the viscosity of crude oil from 1197mPa·s to 432.7mPa·s at 60℃, and decreased 63.9 %, and the mass fraction of glial and asphaltene decreased from 70.34% to 67.16%, decreased by 4.5% under normal temperature(20℃). The interfacial tension of the formation water (salinity: 10220mg/L) and heavy oil (7945mPa·s) was reduced from 40.96mN/m to 16.72mN/m, which was 59.18% lower than that of deionized water at 55℃. The contact angle decreased from 81° to neutral 20.28° at 60°C and crude oil was completely dispersed for 10 days. The performance of the crude oil was better than that of Shengli Oilfield. In Shengli Oilfield, during the field test, the comprehensive moisture content of the oil wells was reduced from 96.1% to 89.1%, and the cumulative yield was 3288t. The effect was good and the application prospect was broad.