SYNTHESIS AND CHARACTERIZATION OF THE ANTIMICROBIAL 4-AMINO-DECYLPYRIDINIUM BROMIDE CATIONIC SURFACTANT

2008 ◽  
Vol 15 (05) ◽  
pp. 531-536 ◽  
Author(s):  
PARAG MADAAN ◽  
V. K. TYAGI
Keyword(s):  
Surface Active Agent ◽  
Maximum Yield ◽  
Active Agent ◽  
Analytical Techniques ◽  
Molar Ratio ◽  
E Coli ◽  
H Nmr ◽  
Concentration Method ◽  
Inhibition Concentration ◽  
Ft Ir

4-Amino-decylpyridinium bromide (ADPBr), an antimicrobial surface active agent, was synthesized by quaternization of 4-aminopyridine (AP) with decyl bromide (DBr). The reaction was carried out at 1:1.2 molar ratio of reactants (4-aminopyridine and decyl bromide, respectively) at 200°C for 10 min. The maximum yield of the product was 74.6%. The structure of the synthesized product was characterized by using modern analytical techniques, such as FT-IR, 1 H NMR, and 13 C NMR. The antimicrobial activity of the salt was evaluated with minimum inhibition concentration method and showed good activity against gram-negative bacteria. The MIC of the salt was found to be 600 ppm for 2 × 104 CFU/mL of E. coli.

ANIONIC GEMINI SURFACTANTS: SYNTHESIS AND SURFACE ACTIVE PROPERTIES

2007 ◽  
Vol 14 (05) ◽  
pp. 991-997 ◽  
Author(s):  
DIPTI SHUKLA ◽  
V. K. TYAGI
Keyword(s):  
Water Solubility ◽  
Gemini Surfactants ◽  
Maximum Yield ◽  
Analytical Techniques ◽  
Molar Ratio ◽  
Foaming Properties ◽  
Wetting Ability ◽  
H Nmr ◽  
Surface Active Properties ◽  
Surface Active

New compounds bearing two phosphate groups and two long chain (dodecyl) were prepared by two-step reaction: (i) phosphorylation of dodecanol with pyrophosphoric acid, (ii) reaction of dodecyl phosphate with N ( CH 3)4 OH and 1,6-dibromo hexane. The effect of reaction variables like time and molar ratio of reactants on yield has also been reported. The 1:2:0.5 molar ratio of reactants (dodecyl phosphate, N ( CH 3)4 OH , and Br ( CH 2)6 Br , respectively) and 3 h duration resulted to give maximum yield of anionic gemini surfactants. The structure of synthesized surfactant was investigated by modern analytical techniques, viz. FT-IR, 1H NMR, 13C NMR. Amphipathic disodium phosphates were obtained by neutralization of free acids with sodium hydroxide and their surface active properties in aqueous solution were measured. These disodium phosphates possessed 77.3% anionic content and showed good water solubility. Foaming properties and wetting ability were also evaluated.

Reaction of 2-[(2-aminoethyl)amino]ethanol with pyridine-2-carbaldehyde and complexation of the products with CuII and CdII along with docking studies

2019 ◽  
Vol 75 (7) ◽  
pp. 951-959 ◽  
Author(s):  
Zahra Mardani ◽  
Mohammad Hakimi ◽  
Keyvan Moeini ◽  
Fabian Mohr
Keyword(s):  
Crystal Packing ◽  
Docking Studies ◽  
Molar Ratio ◽  
Distorted Octahedral Geometry ◽  
X Ray Diffraction ◽  
Donor Ligand ◽  
X Ray ◽  
H Nmr ◽  
Distorted Octahedral ◽  
Ft Ir

The reaction between 2-[2-(aminoethyl)amino]ethanol and pyridine-2-carbaldehyde in a 1:2 molar ratio affords a mixture containing 2-({2-[(pyridin-2-ylmethylidene)amino]ethyl}amino)ethanol (PMAE) and 2-[2-(pyridin-2-yl)oxazolidin-3-yl]-N-(pyridin-2-ylmethylidene)ethanamine (POPME). Treatment of this mixture with copper(II) chloride or cadmium(II) chloride gave trichlorido[(2-hydroxyethyl)({2-[(pyridin-2-ylmethylidene)amino]ethyl})azanium]copper(II) monohydrate, [Cu(C10H16N3O)Cl3]·H2O or [Cu(HPMAE)Cl3]·H2O, 1, and dichlorido{2-[2-(pyridin-2-yl)oxazolidin-3-yl]-N-(pyridin-2-ylmethylidene)ethanamine}cadmium(II), [CdCl2(C16H18N4O)] or [CdCl2(POPME)], 2, which were characterized by elemental analysis, FT–IR, Raman and 1H NMR spectroscopy and single-crystal X-ray diffraction. PMAE is potentially a tetradentate N3O-donor ligand but coordinates to copper here as an N2 donor. In the structure of 1, the geometry around the Cu atom is distorted square pyramidal. In 2, the Cd atom has a distorted octahedral geometry. In addition to the hydrogen bonds, there are π–π stacking interactions between the pyridine rings in the crystal packing of 1 and 2. The ability of PMAE, POPME and 1 to interact with ten selected biomolecules (BRAF kinase, CatB, DNA gyrase, HDAC7, rHA, RNR, TrxR, TS, Top II and B-DNA) was investigated by docking studies and compared with doxorubicin.

scholarly journals Functionalization and Chemical Modification of 2-Hydroxyethyl Methacrylate with Carboxylic Acid

2012 ◽  
Vol 9 (3) ◽  
pp. 1135-1144 ◽  
Author(s):  
Mohammad Hossein Nasirtabrizi ◽  
L. Zargin ◽  
S. Khodabandlou ◽  
S. Rostamzadeh Mansour
Keyword(s):  
Thermal Analysis ◽  
Free Radical ◽  
Carboxylic Acid ◽  
Addition Reaction ◽  
Molar Ratio ◽  
Esterification Reaction ◽  
Hydroxyethyl Methacrylate ◽  
H Nmr ◽  
Temperature Ranges ◽  
Ft Ir

Free radical polymerization of the resulting monomers methyl methacrylate (MMA), ethyl methacrylate (EMA), methylacrylate (MA) and ethylacrylate (EA) with 2-hydroxyethyl methacrylate (HEMA) (in 1:1 mole ratio) were carried out using azobis(isoboutyronitrile) (AIBN) as initiator at the temperature ranges 60-70°C. The modification of polymers were carried out by 9-anthracenecarboxylic acid (9-ACA) via the esterification reaction between —OH of poly(HEMA) and —COOH of 9-ACA, in presence of N,N′-dicyclohexyl-carbodiimide (DCC), 4-(dimethylamino) pyridine (DMAP) and N,N-dimethyl formamid (DMF). It was found that the molar ratio acid/alcohol/catalysts= 0.02: 0.02: 0.02 and 0.002, optimal for preparation of the ester. As demonstrated by FT-IR,1H-NMR and dynamic mechanical thermal analysis (DMTA). The Tg value of methacrylate and acrylate copolymers containing 9-ACA groups was found to increase with incorporation of 9-ACA groups in polymer structures. The presence of 9-ACA groups in the polymer side chains created new polymers with novel modified properties that find some applications in polymer industry. These anthracenic factors could take part in cyclo addition reaction with other factors such as anhydrides and kinons.

scholarly journals PENGARUH RASIO MOL, SUHU DAN LAMA REAKSI TERHADAP BILANGAN IOD, BILANGAN ASAM, BILANGAN PEROKSIDA DAN KANDUNGAN SULFONAT SURFAKTAN DARI CPO

2015 ◽  
Vol 2 (2) ◽  
pp. 148
Author(s):  
Sri Hidayati ◽  
Illim
Keyword(s):  
Reaction Temperature ◽  
Peroxide Value ◽  
Surface Active Agent ◽  
Active Agent ◽  
Acid Value ◽  
Molar Ratio ◽  
Polar Groups ◽  
Amphiphilic Molecules ◽  
Surface Active ◽  
Central Composite

 ABSTRACT A surfactant is a surface-active agent that can be produced by chemical or biochemical synthesis.  The main characteristic of a surfactant is having polar and non polar groups at the same molecule (amphiphilic molecules) and forming head-tail configuration. This research as aimed to obtain      the optimum condition (reaction temperature, sulphonation reaction and molar ratio)                              of sulphonation process in producing MES from CPO methyl ester and to investigate                          the characteristic of MES produced. Measurements conducted include iodine value, acid value, peroxide value and absorbance of Sulfonate. Experimental design used was Response Surface Method (RSM) and Central Composite Design (CCD) with three factors. MES resulted from this best condition   had following characteristic or CPO was obtained with ratio of reactants of 1:1.5, reaction time of 4.5 hour and reaction temperature of 108.9ºC with Acid value of 13.32 mg KOH/g sample, Iod value  of 41.12 Iod g/100 sample, Peroxide value of 7.6 mmole/1000 g, sulfonat absorbance of 0.76 AU. Keywords :  metil ester sulfonat, acid value, iod value, peroxide value    

Robust Photodegradation of Methylene Blue with the Biphenyl-Porphyrin/TiO2 Photocatalyst Under Visible Light Condition

2020 ◽  
Vol 20 (10) ◽  
pp. 6266-6273 ◽  
Author(s):  
Jiwon Ryu ◽  
Rangaraju Satish Kumar ◽  
Young-A Son
Keyword(s):  
Methylene Blue ◽  
Visible Light ◽  
Light Condition ◽  
Analytical Techniques ◽  
Life Time ◽  
Sem Analysis ◽  
Nmr Studies ◽  
Porphyrin Derivative ◽  
H Nmr ◽  
Ft Ir

Herewith, we approached a synthesis of new biphenyl porphyrin derivative and confirmed its structure with 1H-NMR and 13C-NMR studies, FT-IR and mass analytical methods. The porphyrin derivative grafted with TiO2 and the composite (PORBP-TiO2) was further confirmed with different analytical techniques like diffuse reflectance spectra, XRD, FT-IR, XPS, SEM analysis. PORBP-TiO2 was checked for photodegradation of methylene blue in visible light condition and degradation results were compared with bare TiO2. Our newly synthesized photocatalyst showed a very fast and efficient photocatalytical activity in comparison with bare TiO2. Fluoresence life time results also supported the strong photocatalytic activity of PORBP-TiO2. The reusability studies also showed that PORBP-TiO2 is having very good stability upto 10 cycles also. Finally we proposed a suitable catalytic diagram for PORBP-TiO2 photocatalysis.

Effect of macro and molecular initiators on the structure-property relationship of poly(ε-caprolactone)

2021 ◽  
pp. 089270572110271
Author(s):  
A Thamizhlarasan ◽  
B Meenarathi ◽  
R Anbarasan
Keyword(s):  
Analytical Techniques ◽  
Aromatic Proton ◽  
Bulk Polymerization ◽  
Inert Atmosphere ◽  
Structure Property ◽  
Nmr Spectrum ◽  
H Nmr ◽  
Structure Property Relationship ◽  
Ft Ir ◽  
Relationship Of

Ring opening polymerization (ROP) of ε-caprolactone (CL) was carried out by bulk polymerization technique using stannous octoate (SO) as a catalyst and in the presence of macro or molecular initiator for 5 h under inert atmosphere with mild stirring. The % yield of poly(ε-caprolactone) (PCL) obtained was calculated and compared based on the chemical structure of macro and molecular initiators. Various analytical techniques such as FT-IR, 1H-NMR, XPS, GPC, DSC, TGA, SEM and WCA were used to characterize the PCL. The FT-IR spectrum showed the C=O stretching around ∼1725 cm−1. The aromatic proton signal of isoeugenol (IE) initiator appeared at 7–8 ppm in the proton NMR spectrum. The experimental results obtained were compared with the literature values.

scholarly journals Quaternary ammonium salt of chitosan: preparation and antimicrobial property for paper

Open Medicine ◽  
2015 ◽  
Vol 10 (1) ◽  
Author(s):  
Pengtao Liu ◽  
Weisheng Meng ◽  
Shuai Wang ◽  
Yonghui Sun ◽  
Muhammad Aqeel Ashraf
Keyword(s):  
Ammonium Chloride ◽  
Antimicrobial Property ◽  
Antimicrobial Properties ◽  
Inhibition Zone ◽  
Antimicrobial Activities ◽  
Inhibitory Effects ◽  
Zone Method ◽  
E Coli ◽  
H Nmr ◽  
Ft Ir

Abstract A series of 2-hydroxypropyltrimethyl ammonium chloride chitosan (HACC) was prepared by the reaction of chitosan with glycidyl trimethyl ammonium chloride. Structure of HACC was characterized by FT IR and 1H NMR spectroscopies, and it was proved that substitution reaction mainly occurs on the N element. Antimicrobial activities of HACC was examined against S. aureus, E. coli, and A. niger. Results indicatd that the inhibitory effects of HACC solutions were varied with HACC concentration, quaternization degrees, pH values, metal ions, and heat treatment. The antimicrobial properties of handsheets prepared from HACC were studied by the inhibition zone method, and the sheets had good antimicrobial properties against S. aureus and E. coli, and low inhibition rate against A. niger.

scholarly journals Study of Synthesis and Flocculation Properties of New Modified Hydrophobic Organic Polymer P(AM-DM-DMC12)

2019 ◽  
Vol 2019 ◽  
pp. 1-9
Author(s):  
Wei Guo ◽  
Huanzhen Zhang ◽  
Zhuohui Ma
Keyword(s):  
Mass Fraction ◽  
Removal Rate ◽  
Organic Polymer ◽  
Molar Ratio ◽  
Application Range ◽  
H Nmr ◽  
Redox Initiator ◽  
Initiator System ◽  
Ft Ir ◽  
Cod Removal Rate

A new modified hydrophobic organic polymer P(AM-DM-DMC12) is synthesized by free radical polymerization of three monomers in aqueous solution using a REDOX initiator system. Its structure is characterized by FT-IR and 1H-NMR, the effect of reaction conditions on the product is studied, and the flocculation performance and mechanism are discussed with the aim of wastewater turbidity and COD removal rate. The results showed that the synthesized compounds accorded with the target structure, and the optimum synthetic conditions are as follows: the molar ratio of AM, DM, and DMC12 is 4 : 1 : 1, total mass fraction of monomer is 35%, the mass fraction of redox initiator is 0.06%, and the molecular weight of P(AM-DM-DMC12) is 1.02×107. Moreover, the flocculation effect of P(AM-DM-DMC12) is obviously better than that of PAM, and it has the advantages of short flocculation time, low dosage, and wide application range of pH and has a good industrial application value and prospect.

scholarly journals Effect of wet processing operations on the functional properties imparted to polyester fabrics loaded with different metal oxides NPs part II: Effect of the different sequences of dyeing

2021 ◽  
Vol 16 ◽  
pp. 155892502110057
Author(s):  
Samy E Shalaby ◽  
Naser Gad Al-Balakocy ◽  
Margrita K Beliakova ◽  
Abdelmageed M Othman
Keyword(s):  
Antimicrobial Activity ◽  
Functional Properties ◽  
Analytical Techniques ◽  
Polyester Fabrics ◽  
E Coli ◽  
Dyeing Process ◽  
Wet Processing ◽  
Ft Ir ◽  
Ultraviolet Protection ◽  
Dyed Fabrics

The present work aims at investigating the effect of applying different dyeing sequences on the imparted functional properties to partially hydrolysed and bleached PET and PET/CO fabrics loaded with TiO2, ZnO and SnO2 nanoparticles (NPs). The so obtained dyed fabrics have been characterized using SEM, EDX and FT-IR analytical techniques. The obtained results revealed that, an interaction has taken place between COOH groups created on dyed polyester fabrics and each of the applied NPs. Moreover, the effect of loading and sequence of dyeing wet operation on the functional performances of polyester fabrics was evaluated by estimating its antimicrobial efficacy and ultraviolet protection properties. The antimicrobial activity was tested against B. mycoides, E. coli and C. albicans. It has been found that, loading polyester fabrics with TiO2 and ZnO during dyeing process using exhaustion or after dyeing using pad-dry-cure methods paves the way for imparting outstanding antimicrobial activity even after five washing cycles. Moreover, the obtained results have also reviled that, the UPF values are dependent on the sequences of the loading of abovementioed NPs during or after dyeing wet operation.

PVDF-PAn Co-Polymer with High Permittivity Fabricated by Emulsion Polymerization

2009 ◽  
Vol 610-613 ◽  
pp. 512-517
Author(s):  
Yan Guo ◽  
D.B. Luo ◽  
Dong Pan ◽  
Han Xing Liu
Keyword(s):  
Emulsion Polymerization ◽  
Structural Information ◽  
Surface Active Agent ◽  
Matrix Material ◽  
Active Agent ◽  
Sem Images ◽  
Fine Property ◽  
The Matrix ◽  
Ft Ir ◽  
Xrd Patterns

With eEmploying dichloromethane as solvent, sodium dodecanesulphonate as surface active agent, ammonium persulphate as oxidizer, PAn was introduced into PVDF and co-polymer with high relative permittivity reaching to 280 was obtained by emulsion polymerization. By detecting the structural information and electrical property through FT-IR, XRD, SEM, informations about the co-polymers were presented and in this paper. By adjusting the quantity of aniline in polymerization and the concentrations of protonic acid in the post processing, polymers with different electric properties could bewere compared and analyzed. It was The SEM images and XRD patterns showed the crystallization and microstructure information of the co-polymers in comparison. Particularly, the SEM images showed that the PVDF-PAn co-polymers had homogeneous properties in certain constitute range and as a result of emulsion, spherical PAn-PVDF media was fabricated. After robber mixing procedure at certain temperature, the PAn had a relatively average-fine dissolving in the PVDF, which overcame the difficulty of dissolving PAn oin other substrateance. This ensured the fine property for the matrix material in composites. The XRD pattern showed, wWith the increasing of the introduction quantity of PAn, the crystallization of the entire material complex had been raised greatly.

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