Synthesis and Characterization of Rosinyl Amine Salt Surfactant

2011 ◽  
Vol 183-185 ◽  
pp. 1888-1891 ◽  
Author(s):  
Yan Jin ◽  
Shuang Yue Li ◽  
Shu Jun Li ◽  
Li Jun Zhang
Keyword(s):  
Chemical Structure ◽  
Foam Stability ◽  
Critical Micellar Concentration ◽  
Amine Salt ◽  
Raw Material ◽  
Ionization Mass ◽  
Reaction Conditions ◽  
1H Nuclear Magnetic Resonance ◽  
Optimal Reaction

Rosin is reputed as green petroleum because it is renewable, not expensive, and environmental friendly. China is rich in rosin resources. In this report, rosin was used as raw material to prepare rosinyl amine salt (RAS) surfactant. The optimal reaction conditions of RAS was modified rosin and dimethylamine mole ratio of 1:2, reaction temperature of 78 oC and reaction time of 2 h. The chemical structure of the product was identified by Fourier transform infrared spectroscopy (FTIR), electrospray ionization-mass spectrometry (ESI-MS) and 1H nuclear magnetic resonance (NMR) analysis. As a surfactant, it has a critical micellar concentration (CMC) of 7.07×10-5mol/L, a surface tension of 44.36 mN/m, an emulsification activity of 5min, a height of foam of 165 mm, and a foam stability of 143 mm.

Rapid analytical characterization of high-throughput chemistry screens utilizing desorption electrospray ionization mass spectrometry

2019 ◽  
Vol 4 (9) ◽  
pp. 1589-1594 ◽  
Author(s):  
James W. Sawicki ◽  
Andrew R. Bogdan ◽  
Philip A. Searle ◽  
Nari Talaty ◽  
Stevan W. Djuric
Keyword(s):  
High Throughput ◽  
High Speed ◽  
Desorption Electrospray Ionization ◽  
Ionization Mass ◽  
Reaction Conditions ◽  
High Throughput Experimentation ◽  
Desi Ms ◽  
P Application ◽  
Optimal Reaction

Application of high-speed DESI-MS analysis for the identification of optimal reaction conditions through high-throughput experimentation screening.

scholarly journals Review on the Impact of Polyols on the Properties of Bio-Based Polyesters

Polymers ◽  
2020 ◽  
Vol 12 (12) ◽  
pp. 2969
Author(s):  
Kening Lang ◽  
Regina J. Sánchez-Leija ◽  
Richard A. Gross ◽  
Robert J. Linhardt
Keyword(s):  
Tissue Engineering ◽  
Biomedical Applications ◽  
Molecular Level ◽  
Potential Utility ◽  
Reaction Conditions ◽  
Wide Range ◽  
Soft Tissue Engineering ◽  
The Impact ◽  
Optimal Reaction

Bio-based polyol polyesters are biodegradable elastomers having potential utility in soft tissue engineering. This class of polymers can serve a wide range of biomedical applications. Materials based on these polymers are inherently susceptible to degradation during the period of implantation. Factors that influence the physicochemical properties of polyol polyesters might be useful in achieving a balance between durability and biodegradability. The characterization of these polyol polyesters, together with recent comparative studies involving creative synthesis, mechanical testing, and degradation, have revealed many of their molecular-level differences. The impact of the polyol component on the properties of these bio-based polyesters and the optimal reaction conditions for their synthesis are only now beginning to be resolved. This review describes our current understanding of polyol polyester structural properties as well as a discussion of the more commonly used polyol monomers.

Synthesis and Characterization of a Rosin Gemini Surfactant

2011 ◽  
Vol 685 ◽  
pp. 285-290 ◽  
Author(s):  
Zhi Jun Chen ◽  
Shu Jun Li ◽  
Bing Tian ◽  
Tao Liang ◽  
Yan Jin
Keyword(s):  
Reaction Time ◽  
Gemini Surfactant ◽  
Critical Micellar Concentration ◽  
Acid Group ◽  
Specific Method ◽  
Surface Activities ◽  
Good Surface ◽  
Foaming Power ◽  
1H Nuclear Magnetic Resonance

Rosin is reputed as green petroleum because it is renewable, not expensive, and environmental friendly. China is rich in rosin resources. In the paper, rosin was used as material to prepare a rosin Gemini surfactant, bisquaternary ammonium salt(BQA) of rosinate. The specific method was as follows: firstly, the rosin was modified by acrylic acid and a carboxylic acid group was introduced to the rosin. Secondly, the modified rosin reacted with the epoxy chloropropane, the intermediateⅠwas obtained by the way. Thirdly, the intermediate reacted with dimethylamine in the mole ratio of 1:3, the reaction time of 4.5h at 80°C. By this way the intermediateⅡwas synthesized. Finally the intermediateⅡ reacted with the epoxy chloropropane and distilled water in the mole ratio of 1:3:3, the reaction time of 4.5h at 80°C. Liquid chromatography(LC) analysis proved that the purity of the product was 90.8% and the yield of BQA was 67%. The chemical structure of this rosin derivative as a BQA was also conformed by Fourier Transform infrared spectroscopy (FTIR), 1H nuclear magnetic resonance(NMR) analysis. As Gemini surfactant, the surface activities of the product were characterized. Its critical micellar concentration(CMC) was 4.0×10-4mol/l. Its foaming power of the product was 250mm at 0s, 200mm at 5min. The emulsifying power of the product was 56min. Since the product has good surface activities and it is obtained easily from rosin. It has a promising future as a surfactant.

Synthesis of Methacrolein by Condensation of Propionaldehyde with Formaldehyde

2011 ◽  
Vol 396-398 ◽  
pp. 1094-1097
Author(s):  
Yu Chao Li ◽  
Rui Yi Yan ◽  
Lei Wang ◽  
Lu Liu ◽  
Dan Liu ◽  
...  
Keyword(s):  
Methyl Methacrylate ◽  
Water Content ◽  
Atmospheric Pressure ◽  
Mannich Base ◽  
Amine Salt ◽  
Reaction Conditions ◽  
Starting Mixture ◽  
Important Intermediate ◽  
Polymer Dispersions ◽  
Optimal Reaction

Methacrolein is an important intermediate in the synthesis of methyl methacrylate (MMA), which is widely used for producing acrylic plastics or producing polymer dispersions for paints and coatings. In this paper, methacrolein was synthesized by condensation of propionaldehyde with formaldehyde in the pressense of amine salt through Mannich base intermediate at the atmospheric pressure. The optimal reaction conditions were obtained. The water content in starting mixture were also investigated

Synthesis and Characterization of Substituted-Ammonium Humic Acid Fluid Loss Additive for Oil-Based Drilling Fluids

2014 ◽  
Vol 1004-1005 ◽  
pp. 623-626 ◽  
Author(s):  
Cha Ma ◽  
Long Li ◽  
Gang Wang ◽  
Xu Bo Yuan
Keyword(s):  
Humic Acid ◽  
New Product ◽  
Extreme Condition ◽  
Fluid Loss ◽  
Drilling Fluids ◽  
Reaction Conditions ◽  
Acid Fluid ◽  
Optimal Reaction ◽  
Fluid Loss Additive

Using widely distributed and cheap lignite as starting material, humic acid was modified by octadecylamine, and a new kind of humic acid acetamide was prepared. The optimal reaction conditions of the humic acid acetamide polymer were obtained through laboratory tests as follow: the ratio of of humic acid and octadecylamine was 1:1.5, the reaction temperature was 150 °C, and the reaction time was 16~18 h. The new product was characterized by IR, and the results showed that this substituted-ammonium humic acid was successfully prepared by reacting parts of carboxyl group of humic acid with octadecylamine. HTHP filtration experiments demonstrated that the substituted-ammonium humic acid had good fluid loss properties. As a result, this substituted-ammonium humic acid polymer is an excellent fluid loss additive, and it could meet the requirement of drilling operation under extreme condition.

Preparation and Characterization of PA6-PEG/Li High Performance Static Dissipation Composites

2017 ◽  
Vol 70 (6) ◽  
pp. 669
Author(s):  
Chongling Yang ◽  
Shouzai Tan ◽  
Gengen Chen ◽  
Litao Guan
Keyword(s):  
High Performance ◽  
Condensation Reaction ◽  
Polyamide 6 ◽  
Decomposition Temperature ◽  
Reaction Conditions ◽  
Comprehensive Properties ◽  
Ft Ir ◽  
Optimal Reaction ◽  
Resistivity Testing

A copolymer of PA6 (polyamide 6) and PEG (polyethylene glycol) was synthesized by a condensation reaction. The optimal reaction conditions were determined as the following: a reaction temperature of 255°C, –0.04 MPa vacuum, and a condensation time of 40 min. A series of novel PA6-PEG/Li composites were developed by melt blending the PA6-PEG copolymer (10 wt-% PEG) with three different kinds of colourless lithium salts (LiCl, C18H35LiO2, LiAc). FT-IR, NMR, thermogravimetric (TGA), electronic universal testing, and resistivity analyses were employed to investigate the comprehensive properties of the copolymers and composites. The results of FT-IR and 1H NMR analyses revealed that the PEG was copolymerized with PA6 successfully. TGA results indicated that the decomposition temperature of the PA6-PEG copolymer was above 350°C. Resistivity testing revealed that the surface resistivity (Rs) of the copolymer decreased from 1 × 1014 to 5.67 × 109 Ω square–1 with an increase of the content of PEG. The PA6-PEG/LiCl composite showed an excellent static dissipation performance of 2.71 × 108 Ω square–1.

Preparation and Characterization of Nano-Scale Zinc Hydroxystannate

2011 ◽  
Vol 320 ◽  
pp. 369-372 ◽  
Author(s):  
Min Yang ◽  
Hong Tao Cui ◽  
Hua Wei Chen ◽  
Qiong Dang
Keyword(s):  
Zinc Chloride ◽  
Raw Material ◽  
Molar Ratio ◽  
Reaction Conditions ◽  
Nano Scale ◽  
Pure Product ◽  
Sodium Stannate ◽  
Zinc Hydroxystannate ◽  
Tin Tetrachloride

Zinc hydroxystannate was widely used as green flame retardant and smoke suppression agent. In this paper, two different methods were used to prepare the nano-scale zinc hydroxystannate particles. The reaction of tin tetrachloride and zinc oxide was the first way. In the second method, zinc chloride reacted with sodium stannate. The reaction conditions were studied, and the products were characterized by TG/DTA, SEM, and XRD. The best experiment conditions to synthesis zinc hydroxystannate are using sodium stannate and zinc chloride as the raw material, reacting for an half hour at the temperature of 323K, and molar ratio of reactants of 1:1. This will get higher yield, more pure product with regular morphology.

scholarly journals Characterization of Local Products for Their Industrial Use: The Case of Italian Potato Cultivars Analyzed by Untargeted and Targeted Methodologies

Foods ◽  
2020 ◽  
Vol 9 (9) ◽  
pp. 1216
Author(s):  
Cinzia Ingallina ◽  
Mattia Spano ◽  
Anatoly P. Sobolev ◽  
Cristina Esposito ◽  
Cristina Santarcangelo ◽  
...  
Keyword(s):  
Solanum Tuberosum L ◽  
Potato Cultivars ◽  
Water Soluble ◽  
Raw Material ◽  
Array Detector ◽  
Ionization Mass ◽  
High Quality ◽  
Blue Star ◽  
Italian Regions

The chemical characterization of local Italian potato cultivars is reported to promote their preservation and use as high quality raw material in food industries. Twenty potato (Solanum tuberosum L.) cultivars from Piedmont and Liguria Italian regions were investigated using NMR (Nuclear Magnetic Resonance) and RP-HPLC-PDA-ESI-MSn (Reversed Phase High-Performance Liquid Chromatography with Photodiode Array Detector and Electrospray Ionization Mass Detector) methodologies. Water soluble and lipophilic metabolites were identified and quantified. With respect to literature data, a more complete 1H (protonic) spectral assignment of the aqueous potato extracts was reported, whereas the 1H NMR assignment of potato organic extracts was reported here for the first time. Phenolics resulted to be in high concentrations in the purple–blue colored Rouge des Flandres, Bergerac, Fleur Bleu, and Blue Star cultivars. Servane, Piatlina, and Malou showed the highest amount of galacturonic acid, a marker of pectin presence, whereas Jelly cultivar was characterized by high levels of monosaccharides. Roseval and Rubra Spes contained high levels of citric acid involved in the inhibition of the enzymatic browning in fresh-cut potato. High levels of the amino acids involved in the formation of pleasant-smell volatile compounds during potato cooking were detected in Rouge des Flandres, Blue Star, Bergerac, Roseval, and Ratte cultivars. These results suggest that each local cultivar is characterized by a proper chemical profile related to specific proprieties that can be useful to obtain high quality industrial products.

scholarly journals Isolation and partial characterization of a vitamin K-dependent carboxylase from bovine aortae

1987 ◽  
Vol 245 (1) ◽  
pp. 251-255 ◽  
Author(s):  
L J M Van Haarlem ◽  
M M W Ulrich ◽  
H C Hemker ◽  
B A M Soute ◽  
C Vermeer
Keyword(s):  
Vitamin K ◽  
Vessel Wall ◽  
Microsomal Fraction ◽  
Slight Modification ◽  
Similar Degree ◽  
Reaction Conditions ◽  
Carboxylase Activity ◽  
Carboxyglutamic Acid ◽  
Optimal Reaction

Vitamin K-dependent carboxylase activity has been demonstrated in the crude microsomal fraction of the intima of bovine aortae. The procedure for the isolation of vessel wall carboxylase is a slight modification of the general preparation procedure for tissue microsomes. The highest activity of the non-hepatic enzyme was observed at 25 degrees C and hardly any NADH-dependent vitamin K reductase could be demonstrated. The optimal reaction conditions for both vessel wall as well as liver carboxylase were similar: 0.1 M-NaCl/0.05 M-Tris/HCl, pH 7.4, containing 8 mM-dithiothreitol, 0.4% 3-[(3-cholamidopropyl)dimethylammonio]-1-propanesulphonic acid (CHAPS), 0.4 mM-vitamin K hydroquinone and 2 M-(NH4)2SO4. Warfarin inhibits the hepatic and non-hepatic carboxylase/reductase enzyme complex more or less to a similar degree. We have measured the apparent Km values for the following substrates: Phe-Leu-Glu-Glu-Leu (‘FLEEL’), decarboxylated osteocalcin, decarboxylated fragment 13-29 from descarboxyprothrombin and decarboxylated sperm 4-carboxyglutamic acid-containing (Gla-)protein. The results obtained demonstrated that liver and vessel wall carboxylase may be regarded as isoenzymes with different substrate specificities. The newly discovered enzyme is the first vitamin K-dependent carboxylase which shows an absolute substrate specificity: FLEEL and decarboxylated osteocalcin were good substrates for vessel wall carboxylase, but decarboxylated fragment 13-29 and decarboxylated sperm Gla-protein were not carboxylated at all.

Preparation of CeO2 with Different Morphologies and Its Application to Catalytic Ozonation of Aqueous Lemon Yellow Solutions

2014 ◽  
Vol 997 ◽  
pp. 3-8 ◽  
Author(s):  
Xian Hua Qiu ◽  
Xiang Yu Su ◽  
Xue Jun Li ◽  
Na Li
Keyword(s):  
Catalytic Activity ◽  
Surface Morphology ◽  
Chemical Structure ◽  
Catalytic Ozonation ◽  
Lemon Yellow ◽  
Mineralization Rate ◽  
Great Role ◽  
Reaction Conditions ◽  
Process Characterization

Taking Ce (NO3)3•6H2O as cerium source, CeO2 nanosheets, CeO2 nanorods and CeO2 nanotubes were prepared using hydrothemal process. Characterization of chemical structure and surface properties for these materials was carried out and their efficacy in the catalytic ozonation degradation of wastewater was investigated. The results showed that the surface morphology and reaction conditions played great role in the removal of organic compounds. It was found that the CeO2 nanotubes showed superior catalytic activity. When 0.5 g of CeO2 nanotubes and 15 mg/min of ozone were applied in catalytic ozonation, the mineralization rate reached 97% after 2 h treatment for 1 L of model wastewater containing lemon yellow with 100 mg/L TOC.

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