Abstract:3-(2-(8-(1H-benzimidazol-2-yl)quinolin-2-yl)ethenyl)-9-benzyl-9H-carbazole (probe L) was synthesized through multi-steps reaction, starting from anthranilic acid and carbazole. The structure was confirmed by 1HNMR, 13C NMR and MS. The research of fluorescence spectroscopy indicated that the probe L exhibited high selectivity to Zn2+, strong anti-interference capability, rapid response within 50 s and insensitivity at pH 5-9. A good linear work curve with R2=0.9999 had been achieved in the linearity range from 0 to 1.6×10-5 mol/L, and the limit of detection was 6.69×10-8 mol/L. A 1:1 binding ratio of Zn2+/L for the complex had been obtained by Job’s plot, fluorescence titration experiment and ESI-MS analysis method.

Abstract:The porous epoxy materials were successfully fabricated using epoxy, curing agents (RATEPA and DRATEPA) prepared with ricinoleic acid (RA) or dimerization ricinoleic acid (DRA) and tetraethylenepentamine (TEPA), glaze powder as filler and water via epoxy-water-filler suspended emulsion polymerization at ambient temperature. Pore size distribution, structure of the pore, porosity, mechanical properties and thermal properties of porous epoxy material were characterized in the present research. The results revealed as the mass ratio of aqueous phase to epoxy phase and particle size of glaze powder increased, the pore size and porosity increased and the compressive strength decreased. Meanwhile, the pore size and porosity decreased and the compressive strength increased as the molecular weight of the curing agent increased. When the particle size of glaze powder is 40μm, the curing agent is RATEPA, the mass ratio of aqueous phase to epoxy phase was 2:1, the overall performance of the porous epoxy materials reached to a relatively excellent stage: the pore size is 3.449μm, the porosity is 21.8%, the compressive strength is 26.89MPa. The TGA results indicated that the resulting porous epoxy material showed excellent thermal properties before the temperature reached 379oC

Abstract:Abstract: Quaternized curdlan with antibacterial properties was prepared using curdlan as raw material. The chemical structure of quaternized curdlan was confirmed by total reflectance infrared spectroscopy (FTIR-ATR) and 1HNMR spectroscopy. Quaternized curdlan antimicrobial film were prepared by the method of repeated freezing-thawing emulsifying crosslinked. The structure and properties were characterized by scanning electron microscopy (SEM), FTIR-ATR and thermogravimetry (TG). Casting solution stability and water vapor permeability of the films under different formulations were studied. Results show that after 7 days, the casting solution that the mass fraction of paraffin was between 0.4%~0.8% is still opaque milky white liquid and unstratified, therefore, the casting solution has certain stability. The water vapor transmittance of film was 2.12×10-7(m•h•Pa)-1 when the number of freezing thawing times was 3, the mass fraction of glycerol was 2% and the mass fraction of paraffin was 0.6%. The antimicrobial test results show that the quaternized curdlan film had antibacterial effect against Escherichia coli, Staphylococcus and Fusarium but the antibacterial activities of quaternized curdlan film against Staphylococcus and Fusarium were much better than Escherichia coli.

Abstract:The targeting ligand folic acid (FA) and amphiphilic linoleyl chitosan oligosaccharide (LCOS) with excellent biocompatibility were linked to the carboxyl substituted meso-tetraphenylporphyrin (TPP) of 5-(4-carboxyl)phenyl-10,15,20-triphenyl porphyrin (CPTPP) through acylation reaction. Then the potential drug loading system of CPTPP-FA-LCOS with photosensitive function was obtained. The chemical structure of CPTPP-FA-LCOS was characterized by FTIR, UV-Vis, TEM and fluorescence spectrum. The critical micelle concentration (cmc) of CPTPP-FA-LCOS was also determined using surface tension method. The results showed that cmc value of CPTPP-FA-LCOS was 2.5×10-3 mg/mL. CPTPP-FA-LCOS could be formed into spherical nano-micelles and the particle size was between 70 and 120 nm. The results of preliminary MTT (methyl thiazolyl tetrazolim) suggested that the cell viability was reduced to less than 50% under the light when the concentration of CPTPP-FA-LCOS was 0.4 mg/mL, which suggested the obvious phototoxicity of CPTPP-FA-LCOS.

Abstract:Pr3+:Y2SiO5/ZnO-TiO2/ACF composites were prepared by sol-gel technique of anchoring ZnO and upconversion fluorescent material/TiO2 nanocomposites on activated carbon fiber(ACF). The properties of samples were characterized by XRD, SEM, EDS, FS, and UV-vis DRS. The photocatalytic activity of Pr3+:Y2SiO5/ZnO-TiO2/ACF was evaluated for degradation of methylene blue solution under visible light irradiation. The effect of ZnO mass doping concentration on photocatalytic activity of composites was investigated. The results showed that Pr3+:Y2SiO5/ZnO-TiO2/ACF showed the highest visible-light photocatalytic activity in the degradation of methylene blue (500mL, 15mg/L), when the mass fraction of ZnO doping was 10%. After 12 h, the degradation of methylene blue can be as high as 98.0%. The photodegradation followed pseudo first order process and reaction rate constant is 0.3413 h-1, which is 1.7 times as high as Pr3+:Y2SiO5/TiO2/ACF. The removal rate of methylene blue for Pr3+:Y2SiO5/ZnO-TiO2/ACF could be remained above 85% after recycling four times.

Abstract:The lignin-based avermectin microcapsules（AVM-CS）were prepared by layer-by-layer polyelectrolytes self-assembly method using sulfonated alkali lignin polyoxyethylene ether / polyethyleneimine as shell materials and avermectin as core material. The microcapsule encapsulation and sustained-release properties were investigated on the effect of core-wall ratio, cross-linking agent dosage, cross-linking reaction pH and NaCl concentration. The optimal parameters of AVM-CS were determined: core ratio = 2/5, glutaraldehyde content of 2%, cross-linked pH = 8, 1 mol / L NaCl solution in the capsule. The prepared AVM-CS was in the form of irregular spherical particles with a particle size ranging from 1 to 5 μm. The sustained-release property of AVM-CS was similar to that of avermectin microcapsule prepared from polyurethane wall material, but the release of AVM-CS was relatively complete and the utilization rate of AVM-CS was higher.

Abstract:KH-GE/NR composite materials were prepared by mechanical mixing process with natural rubber and γ-methacryloxy propyl trimethoxyl silane (KH570) modified graphene (KH-GE). The structure of KH-GE was characterized by FT-IR, Raman spectroscopy, XRD and SEM. In addition, the microstructure, vulcanization characteristics, mechanical properties and electrical conductivity of KH-GE/NR composite materials were investigated. The results showed that graphene had been modified by KH570 successfully and the layer space of KH-GE increased, which was favorable for the KH-GE dispersion in natural rubber network. The mechanical properties of KH-GE/NR composite materials were enhanced by the introduction of KH-GE. When the dosage of the KH-GE was1.0 %, the tensile strength and the elongation at break of composite materials were 17.57Mpa and 645.48%, respectively. In comparison with the rubber without KH-GE, the tensile strength of composite materials was enhanced by 122% and the elongation at break was enhanced by 21%. The research also confirmed that the volume resistivity of KH-GE composite materials decreased approximately three orders of magnitude.

Abstract:The yeast as microbial foaming agent was introduced into the composites of polyvinyl alcohol (PVA)/hydroxyethyl cellulose (HEC). The PVA/HEC porous composites were prepared by freeze/thaw process. The porosity, water absorption and water retention property of PVA/HEC porous composites were tested in different experimental conditions. The microstructure of the samples was characterized by FTIR and SEM. The thermal stability, crystallinity and mechanical properties of the samples were analyzed by thermal gravimetric analyzer (TG), XRD ray diffraction (X) and universal tensile testing machine, respectively. The results show that the pore of PVA/HEC porous composites foamed by yeast exhibit an elliptical open-cell structure that large cells are surrounded by small cells .It has fast water absorption response rate and good water retention. Its water retention rate fell to the lowest after 24h. Comparing with the PVA/HEC porous composites without yeast foamed, the PVA/HEC porous composites foamed by yeast, its properties thermal stability and mechanical properties are improved. The compression strength and the ultimate compressive stress is 13.2 MPa and 6.4Mpa, respectively.

Abstract:The improvements of 1-hexadecylpyridinium chloride monohydrate on the production of glucose by the enzymatic hydrolysis of pure cellulose, the effects of enzyme activity and enzyme kinetics have been investigated. The results showed that, the optimal enzymatic hydrolysis conditions of pure cellulose were as follows: enzyme dosage was 10 FPU/g, mass fraction of substrate was 1.25%, surfactant mass concentration was 5g/L, reaction time was 12h. The average conversion rate of cellulose was 59.91%, and improved 20.79% compared with the value of 39.12% without adding surfactant. The addition of 1-hexadecylpyridinium chloride monohydrate increased the maximum rate of enzymatic hydrolysis and the Michaelis constant，and the maximum reaction rate increased by 58.22%, the Michaelis constant increased by 1.01 times. The relative enzyme activity increased firstly and then decreased with time, the highest value of relative enzyme activity increased was 53.18% at 24h.

Abstract:2'-O-[4-N,N-dimethylamino-2(R)-fluoro-butyryl]-paclitaxel hydrochloride (Ⅵ) was synthesized from Bakatin III(Ⅰ) via acylation, condensation, selective deprotection and hydrogenolysis of 2'-O-[4-N,N-dimethylamino-2(R)-fluoro-butyryl]-7-O-benzyloxycarbonyl- paclitaxel hydrochloride (V), which was prepared by the esterification of 7-O-benzyloxycarbonyl -paclitaxel (Ⅳ) with (R)-4-N,N-dimethylamino-2-fluoro-butyryl chloride hydrochloride (Ⅶ). The effect of volume ratio of trifluoroacetic acid and acetic acid on reaction time during the preparation of compound IV, dosage of (R)-4-N,N-dimethylamino-2 -fluoro-butanoic acid hydrochloride (Ⅷ) and catalyst (4-DMAP) on Ⅳ conversion during the preparation of compound Ⅴ were investigated. The optimal conditions were as following: V (trifluoroacetic acid): V (acetic acid) = 1∶8; n (Ⅳ)∶n (4-DMAP)∶n (Ⅷ) = 1∶3∶3. The structure of target product was confirmed by MS, 1HNMR and 13CNMR. The synthesis process was simple, overall yield was more than 60%, and the purity of the target product was 99% (HPLC).

Abstract:Aspartic acid-malic acid copolymer (PAMA) is a new product of modified polyaspartic acid, which is a typical representative of green scale inhibitors. In order to extend application of PAMA, According to the method of static scale inhibition test, complex quantity was selected as the evaluation standard. The complexation properties of PAMA towards the Ca2 in supersaturated solution of calcium sulfate under different conditions were investigated. Results showed that the addition of Fe3 、Zn2 、Cu2 or their mixed ions contributed to the decrease of complexation property of PAMA, the declines were Ca2 /Cu2 < Ca2 /Fe3 < Ca2 /Zn2 . In the absence of Fe3 、Zn2 、Cu2 , 2mg/L PAMA could reach the optimum complexation quantity of 9.25g/g. While Without Fe3 、Zn2 、Cu2 , 4mg/L PAMA also had a fine complexation property. In summary, PAMA showed an excellent performance on inhibiting the deposition of sulfate scale.

Abstract:The hydroxyl branched-functionalized styrene-butadiene-styrene triblock copolymer (SBS-g-OH) was prepared using thiol-ene radical addition reaction with commercial SBS(raw material), 2-mercaptoethanol(MCH, modifying agent), azodiisobutyronitrile(AIBN, initiator), 1,4-dioxane(DOA, solvent). The reliability of this reaction was proved by the characterization of fourier transform-infrared spectroscopy (FT-IR), 1H-nuclear magnetic resonance(1H NMR) spectroscopy, and thermogravimetric analyzer(TGA). The effects of reaction time, temperature, MCH amount on grafting functionality degree were investigated, furthermore, the effects of grafting functionality degree on the C=C units of PB chains and molecule weight of SBS-g-OH were also investigated. Hydroxyl was mainly grafted onto the 1,2-C=C units of PB chains in SBS at the scale of functionality degree below 33.27 mol%, based on a certain amount of materials(SBS: MCH: AIBN: DOA = 10: 2: 0.02: 200 (g)), functionality degree was increased with increasing reaction time and temperature at the temperature ranged from 60 to 80 oC and time ranged from 1 to 15 h. A little number of hydroxyl was grafted onto the 1,4-C=C units of PB chains at the functionality degree of 38.57 mol%, and the 1,4-C=C units began to scissor, which made the molecular weight of SBS reduced, at the functionality degree of 41.27 mol%. The phenomenon of gel occurred at the SBS(g)/MCH(g) ranged from 0.05/1 to 0.2/1. Finally, the dispersivity of SBS-g-OH with different functionality degree in modified asphalt, and the storage stability of modified asphalt were investigated. The dispersivity was improved with increasing functionality degree at the scale of functionality degree below 33.27 mol%, especially, at the functionality degree of 24.07 mol%, segregation degree and storage stability of modified asphalt was most improved by SBS-g-OH.

Abstract:A high temperature retarder AA/MAS/CL/TMAAC(AMCT) was synthesized using sodium methylallyl sulfonate（MAS）, hydrophilic long-chain alkene monomer（CL）, acrylic acid（AA） and trimethyiallylammonium（TMAAC） as raw materials. The optimized reaction conditions for synthesizing AMCT were as followed: n(AA): n(MAS): n(CL): n(TMAAC)=4:1:0.15:0.1, the amount of initiator[(NH4)2S2O8] was 4% of the total quality of monomer , the monomers mass concentration were 300g/L, the reaction temperature was 85 ℃ and reaction time is up to 24 h, after all that we got yellow brown viscous liquid. The structures of AMCT were characterized by IR and 1H NMR. The temperature resistance property was investigated by TGA. The temperature and dosage sensibilities were studied according to thickening time and the dispersity and stability were observed by the influence of AMCT on cement slurry rheology behavior. The retarding mechanisms were confirmed by XRD, EDTA titration and LF-NMR. The results indicated that the decomposition temperature of AMCT was approximately 255℃; the temperature and dosage sensibilities of AMCT were accorded with the industrial standard of 《SY/T 5504.1-2005》; AMCT exhibited no harmful effects on dispersity and stability of slurry; the retarding mechanisms of AMCT including self-matching adsorption form coating layer, the rules of inhibiting crystal growth and complexation.

Abstract:In this paper, a new kind of filtrate reducer PAAS is prepared with 2-acrylamide-2-methylpro panesulfonic acid (AMPS), acrylamide (AM) and sodium p-styrene sulfonate (SSS) by inverse emulsion polymerization, and the optimal synthesis conditions is obtained through orthogonal experiment. And the molecular structure is confirmed by FT-IR and element analysis, which shows that the molecular structure of PAAS meet the expected design structure. And then the comprehensive thermal analysis shows that the polymer PAAS have a good thermal stability. In addition, the rheological experiments, high temperature aging experiments and fluid loss experiment shows that the drilling fluid have a good rheological properties when the adding amount of polymer PAAS is 1.5 wt%, and the FLAPI=8.4 mL before aging under 160 ℃, and the FLAPI=10.2 mL after aging. Finally, the adsorption experiment, micro structure and transverse relaxation time of filter cake shows that the filtrate reducer reduce fluid loss by adsorption.

Abstract:To improve and optimize the synthetic process of the glycosylation, 2,3,4,6-O-Tetraacetyl-α-D-glucopyranosyl bromide(Ⅲ) was prepared from D-glucose via acetylation, bromination. The 2,3,4-trimethoxybenzaldhyde could provide 2-hydroxy-3,4-dimeth-oxybenzaldhyde(Ⅳ) selectively by using AlCl3 . Then, 3,4-dimethoxybenzaldhyde-2-O-β-D-acety -glucoside(Ⅴ) and 3,4-dimethoxybenzaldhyde-2-O-β-D-glucoside (Ⅵ) were obtained from Ⅳ and Ⅲ by glycosylation, hydrolysis respectively. The results indicated that the yield of O-glycosyl (Ⅴ) could reach 78.9%, while anhydrous K2CO3 and tetrabutyl ammonium bromide were used, the application of the methanol and anhydrous K2CO3 was the preferred hydrolysis system of Ⅴ. The structures of the synthetic compounds were confirmed by 1HNMR, 13CNMR, IR and MS spectrum analysis.

Abstract:Graphene oxides (GO) nanosheets were prepared with graphite as main raw materials by oxidizing reaction and ultrasonic dispersion. The testing results indicate that GO size is in the range of 30-900nm and the content of hydroxyl and carboxyl are 22.1% and 29.4%. The 0.03% according to cement weight is doped in cement composites, SEM results indicate that the whole cement matrix in cement composites has ordered dense microstructure with flower-liked patterns consisted by polyhedron-like crystals with interwarving and inserting. The flexural and compressive strength of the corresponding cement composites at 28 days increase 93.9% and 80.0%, respectively.

Abstract:Isocyanate group-terminated polyurethane prepolymer(PU-Si) was synthesized by polyether polyols (N210), IPDI, hydroxyl silicon, the waterborne curing agent modified by polyurethane contained silicon was prepared using PU-Si , epoxy resin (E-51)and TEPA-660a.The structure and properties of polymer was characterized by IR, SEM,TG and water contact angle measurement;and studied the effect of PU-Si content on emulsifying properrty of curing agent，the mechanical properties, thermal properties, impact fractured surfaces and water absorption of the cured film. The results show that When the PU-Si content is18%, the cured film has the best comprehensive performance, impact strength is 22.4KJ.m-2,tensile strength is 44.7MPa, the characteristic decomposition temperature at 5% and 50% mass loss is 205℃ and 373.8℃,water contact angle is 96.8? water absorption is 24h is 1.35%,the toughness and heat resistance both have well performance compared respectively to pure epoxy.

Abstract:Myrtenal (Ⅱ) was prepared by selective oxidation of allyl methyl using α-pinene (Ⅰ) as starting material. Then, myrtenal thiosemicarbazone (Ⅲ) was prepared by condensation reaction, followed by oxidative cyclization to afford myrtenal-based thiadiazole (Ⅳ). Finally, eleven novel myrtenal-based thiadiazole-amide compounds Ⅴa～k were synthesized by N-acylation reaction of myrtenal-based thiadiazole with a series of acyl chlorides in yields ranging of 66-81%. All the target compounds were characterized by FTIR, 1HNMR, 13CNMR, and ESI-MS. The antifungal and herbicidal activities were also evaluated in this study, and the results showed that, at 50 mg/L, Compounds Ⅴa～k displayed different antifungal activity against Physalospora piricola, Fusarium oxysporum f. sp. Cucumerinum, Cercospora arachidicola, Gibberella zeae, and Alternaria solani, in which myrtenal-based thiadiazole-acetamide (Ⅴa), myrtenal-based thiadiazole-chloroacetamide (Ⅴb), and myrtenal-based thiadiazole-n-propionamide (Ⅴc) had the inhibition ratios of 93.0%, 93.0%, and 98.2% against P. piricola, respectively, and compound Ⅴc had the inhibition ratio of 84.3% against F. oxysporum f. sp. cucumerinum, exhibiting comparable or even better antifungal activity than the commercial fungicide azoxystrobin (positive control, the inhibition ratios of 96.0% and 87.5%, respectively). The structure-activity relationship indicated that the aliphatic amide derivatives exhibited better antifungal activity than the others. In addition, at 100 mg/L, myrtenal-based thiadiazole-n-propionamide (Ⅴc) showed better growth inhibition activity in the inhibition ratio of 79.6% than the commercial herbicide flumioxazin (positive control, the inhibition ratio of 63.0%) against root of rape (Brassica campestris).

Abstract:β-nitro-substituted 5, 10, 15, 20-Tetraphenyl porphyrin (β-NO2-TPP) and β-amino -substituted 5, 10, 15, 20-Tetraphenylporphyrin (β-NH2-TPP) -very versatile substrates for further chemical transformations, have been synthesized. The structure of the synthesized compounds was characterized by MS, 1H NMR and IR. The UV-Vis and Fluorescence spectral properties of the compounds were also investigated.