scholarly journals Hyperbranched polymer surfactant: synthesis, characterization and surface tension activity

2021 ◽  
Vol 3 (1) ◽  
Author(s):  
Longfang Ren ◽  
Zheng Tang ◽  
Taotao Qiang ◽  
Guoguo Zhang
Keyword(s):  
Surface Tension ◽  
Critical Micelle Concentration ◽  
Surface Activity ◽  
Hyperbranched Polymer ◽  
Alkyl Chain ◽  
Fatty Acyl ◽  
Uv Spectrophotometry ◽  
Micellar Properties ◽  
Polymer Surfactants ◽  
Polymer Surfactant

Abstract A series of hyperbranched polymer surfactants (HBP-C8, HBP-C12 and HBP-C16) were synthesized by the reaction between hydroxyl-terminated hyperbranched polymers (HBP) and fatty acyl chloride. The structure of obtained hyperbranched polymer surfactant was characterized by FTIR, NMR and GPC. The results showed that the products have amphiphilic structure. The thermal property of the hyperbranched polymer surfactant investigated by DSC and TGA was strongly influenced by the length of end alkyl chain. Surface activity of hyperbranched polymer surfactant was analyzed by surface tension method and UV spectrophotometry, respectively. The results showed that hyperbranched polymer surfactant took on better surface activity, which can effectively reduce the surface tension of the water. The hyperbranched polymer surfactant has a lower critical micelle concentration (CMC) and displays single molecular micellar properties, which can package small hydrophilic molecules in relatively low concentration. Graphical abstract

Study on Properties of Sulfonate Hyperbranched Polymer Surfactant

2012 ◽  
Vol 602-604 ◽  
pp. 794-797
Author(s):  
Xue Chuan Wang ◽  
Xin Miao Li ◽  
Tao Tao Qiang
Keyword(s):  
Surface Activity ◽  
Hyperbranched Polymer ◽  
Inorganic Salt ◽  
High Surface ◽  
Measuring Cylinder ◽  
Infrared Spectrometer ◽  
New Type ◽  
Polymer Surfactants ◽  
Polymer Surfactant ◽  
High Surface Activity

A new type of sulfonate surfactant (Gn-SHBP) has been prepared by esterification and sulphonation. At 25°C, the surface activity, the effect of NaCl on solution CMC（critical micelle concentration), emulsibility and the tolerance to inorganic salts of sulfonate hyperbranched polymer surfactants were investigated by the methods of surface tension, measuring cylinder and visible-infrared spectrometer. The results show that both surfactants have high surface activity; G2-SHBP exhibit higher surface activity than G1-SHBP with a CMC of 0.2 g/L and a γCMC of 25.36 mN/m; and both perform good emulsify power which exhibit better emulsion stability than SDBS; and high resistance to inorganic salt which can reach up to 260 g/L ( NaCl), 140 g/L(CaCl2) and 190 g/L(MgCl2), respectively.

Surface Activity Research of Cationic Gemini Surfactants

2013 ◽  
Vol 690-693 ◽  
pp. 2076-2080
Author(s):  
Zhen Zhong Fan ◽  
Lan Lan Li ◽  
Li Feng Zhang ◽  
Qing Wang Liu
Keyword(s):  
Surface Tension ◽  
Critical Micelle Concentration ◽  
Surface Activity ◽  
Surfactant Concentration ◽  
Gemini Surfactant ◽  
Gemini Surfactants ◽  
Ph Value ◽  
Inorganic Salts ◽  
Cationic Gemini Surfactant ◽  
Cationic Gemini Surfactants

Cationic Gemini surfactant concentration, the inorganic salts added and the pH value of surface tension obtained cationic gemini surfactant critical micelle concentration is 0.4mmol / L;by adding three kinds of inorganic salts NaCl, MgCl2, and Na2SO4 ,which Na2SO4 has the greatest impact on surface tension, followed by MgCl2.The surface minimum tension of the pH ranged from 9 to 11 , indicating that the surface activity of cationic gemini surfactants achieved the highest.

Synthesis of Chelating Surfactant and its Application in Silk Degumming

2011 ◽  
Vol 331 ◽  
pp. 245-248
Author(s):  
Yun Zhang ◽  
Xi Tao Sun ◽  
Xiang Rong Wang
Keyword(s):  
Surface Tension ◽  
Critical Micelle Concentration ◽  
Ir Spectra ◽  
Surface Activity ◽  
Stretching Vibration ◽  
Degumming Process ◽  
Degumming Agent

Ethanediyl-N-hexadecyl-tri(sodium α-glycinate) (N-hexadecyl ED3A), which belongs to the chelating surfactants, was synthesized by three-step reactions in this study. The structure of the product was characterized by IR. The surface activity and the properties of N-hexadecyl ED3A as degumming agent were investigated. The IR spectra showed the characteristic bands corresponding to the stretching vibration of C-N, -COONa, and C-H groups. The critical micelle concentration (cmc) of N-hexadecyl ED3A was 0.249mmol•L-1, and the surface tension at the cmc (γcmc) of it was 33.03mN•m-1. This revealed that the surfactant had fairly low cmc and excellent surface activity. Lower dosage of N-hexadecyl ED3A showed as good result as the conventional soap in silk degumming process, and the degumming result was also excellent without adding the chelating dispersant.

Preparation and Properties of Amide Surfactants

2012 ◽  
Vol 550-553 ◽  
pp. 99-102
Author(s):  
Bao Cai Xu ◽  
Gui Ju Zhang ◽  
Yun Xia Li ◽  
Lu Cui
Keyword(s):  
Surface Tension ◽  
Critical Micelle Concentration ◽  
Aqueous Solutions ◽  
Surface Activity ◽  
Surface Tensions ◽  
Equilibrium Surface ◽  
Minimum Surface Tension ◽  
Dilute Aqueous Solutions ◽  
Lipophilic Groups ◽  
Long Chain

Amide surfactants have modified structures with lipophilic groups connecting hydrophilic groups through amido bond. The preparation of three families of amide surfactants including long chain N-acyl sarcosinates, amidopropyl dimethyl hydroxypropyl sulfobetaines and lauryl amidopropyl trimethyl ammoniums were discussed. The study of the surface activity of these compounds by measuring the equilibrium surface tensions of their dilute aqueous solutions were described. The minimum surface tension and the critical micelle concentration values of these compounds are given.

Surface Activity Research of Cationic Gemini Surfactants

2013 ◽  
Vol 652-654 ◽  
pp. 1450-1454
Author(s):  
Zhen Zhong Fan ◽  
Lan Lan Li ◽  
Li Feng Zhang ◽  
Qing Wang Liu
Keyword(s):  
Surface Tension ◽  
Critical Micelle Concentration ◽  
Surface Activity ◽  
Surfactant Concentration ◽  
Gemini Surfactant ◽  
Gemini Surfactants ◽  
Ph Value ◽  
Inorganic Salts ◽  
Cationic Gemini Surfactant ◽  
Cationic Gemini Surfactants

Cationic Gemini surfactant concentration, the inorganic salts added and the pH value of surface tension obtained cationic gemini surfactant critical micelle concentration is 0.4mmol / L;by adding three kinds of inorganic salts NaCl, MgCl2, and Na2SO4 ,which Na2SO4 has the greatest impact on surface tension, followed by MgCl2.The surface minimum tension of the pH ranged from 9 to 11 , indicating that the surface activity of cationic gemini surfactants achieved the highest.

Synthesis of New Surfactants from Lauramidopropyl Betaine and Surface Activity Evaluation

2019 ◽  
Vol 953 ◽  
pp. 153-159 ◽  
Author(s):  
Qiao Na Liu ◽  
An Guo Yang ◽  
Seng Peng ◽  
Rong Jun Zhang ◽  
Jin Ling Li ◽  
...  
Keyword(s):  
Surface Tension ◽  
Critical Micelle Concentration ◽  
Surface Properties ◽  
Surface Activity ◽  
Nonionic Surfactants ◽  
Functional Group ◽  
Raw Materials ◽  
Foaming Ability ◽  
Molar Ratios ◽  
Main Component

The ampholytic surfactant lauramidopropyl betaine (LAB) has excellent properties and very low irritation. It has good compatibility and can be used together with cationic, anionic and nonionic surfactants. In this paper, new surfactants were synthesized by using LAB as the main component and the molar ratios of LAB to formaldehyde were 1:1, 1:2, 1:3 and 1:4, respectively. The new functional group hydroxymethyl was introduced into the LAB, and the effect of hydroxymethyl on the properties of raw materials was discussed. And the surface properties were studied, including surface tension, critical micelle concentration and foaming ability. Finally, it can be concluded that the introduction of methylol groups improves the performance of the prepared new surfactants in certain properties.

Investigation of the Inhibitive Effect of Hexatriethanolamine Derivatives on Corrosion of Carbon Steel Pipelines in 1M HCI

2013 ◽  
Vol 787 ◽  
pp. 216-221
Author(s):  
Omnia A.A. El-Shamy ◽  
Abdullah S. Al-Ayed
Keyword(s):  
Surface Tension ◽  
Carbon Steel ◽  
Critical Micelle Concentration ◽  
Surface Area ◽  
Corrosion Inhibition ◽  
Surface Activity ◽  
Inhibition Efficiency ◽  
Surface Excess ◽  
Corrosion Inhibition Efficiency ◽  
Minimum Surface Area

The corrosion inhibition efficiency of carbon steel pipelines in 1M HCl by the synthesized hexatriethyleneamine derivatives potensiodynamic polarization 30 oC. The results showed that all synthesized inhibitors were good inhibitors and their inhibition efficiencies were significantly increased with increasing concentration. The surface activity were calculated from its surface tension measurements including the critical micelle concentration (CMC), effectiveness of surfactant (π), maximum surface excess (Γmax) and the minimum surface area (Amin).

Synthesis and Surface Activity of Biomass Cardanol Sulfonate Surfactant

2011 ◽  
Vol 183-185 ◽  
pp. 1534-1538 ◽  
Author(s):  
Jun Wang ◽  
Yu Wei Wang ◽  
Cui Qin Li ◽  
Jie Li
Keyword(s):  
Surface Tension ◽  
Critical Micelle Concentration ◽  
Interfacial Tension ◽  
Benzene Ring ◽  
Surface Activity ◽  
Raw Materials ◽  
Salt Content ◽  
Alkali Content ◽  
Characterization Result ◽  
Droplet Method

A novel biomass cardanol sulfonate surfactant was synthesized using cardanol and oleum as raw materials, dichloromethane as solvent. The IR characterization result has proved the occurrence of sulfonation on the benzene ring of cardanol which has given a product of cardanol sulfonate. The evaluation on the surface activity of the product has shown that the values of the surface tension and critical micelle concentration (cmc) were 38.41 mN/m and 3.37 g/L, respectively. Interfacial tension of cardanol sulfonate aqueous was measured by spinning droplet method, the results showed that the value of interfacial tension reached 8.6×10-2 mN/m when the salt content was 1%, when the alkali content was 1.2%, the value reached 1.4×10-2 mN/m.

Preparation, Surface Activity and Application of Fluoro-Spreading Agent

2015 ◽  
Vol 1101 ◽  
pp. 322-329
Author(s):  
Hong Xin Shi ◽  
Yu Teng Fu ◽  
Hai Min Shen ◽  
Hong Ke Wu
Keyword(s):  
Aqueous Solution ◽  
Surface Tension ◽  
Critical Micelle Concentration ◽  
Surface Activity ◽  
Sodium Dodecyl ◽  
Sodium Dodecyl Benzene Sulfonate ◽  
Benzene Sulfonate ◽  
H Nmr ◽  
Film Forming ◽  
Dodecyl Benzene Sulfonate

Ammonium perfluoro-2,5-bis (trifluoromethyl)-3,6-dioxopelargonate (FY1) was synthesized from perfluoro-2,5-bis (trifluoromethyl)-3,6-dioxopelargonic acid and ammonia in ether, and was characterized by IR and 1H NMR. Its surface activity and spreading performance on gasoline were investigated in detail. The critical micelle concentration (CMC) of FY1 in aqueous solution was 0.25 g / L, and the surface tension at CMC (ڃcmc) was 17.25 mN / m. The aqueous solution of FY1 could spread on the surface of gasoline, but the aqueous solution of FY1 mixed with sodium dodecyl benzene sulfonate (SDBS), sodium dodecyl sulfate (SDS), n-octanol, 2-ethyl hexanol or VF respectively could not spread on gasoline. However, the aqueous solution of two or three components of FY1 with anion fluoro-surfactant Intechem-1 and SDS or n-octanol could spread on gasoline, and the biggest covering degree on gasoline reached 80.2% in 10min. It can decrease the volatilization of gasoline and can be employed to develop a new aqueous film-forming foam for oil-fire fighting.

scholarly journals Surface Activity of Humic Acid and Its Sub-Fractions from Forest Soil

2021 ◽  
Vol 13 (15) ◽  
pp. 8122
Author(s):  
Shijie Tian ◽  
Weiqiang Tan ◽  
Xinyuan Wang ◽  
Tingting Li ◽  
Fanhao Song ◽  
...  
Keyword(s):  
Surface Tension ◽  
Particle Size ◽  
Humic Acid ◽  
Forest Soil ◽  
Surface Activity ◽  
Self Assembly ◽  
Average Particle Size ◽  
Gaussian Model ◽  
Exponential Model ◽  
Average Particle

Surface activity of humic acid (HA) and its six sub-fractions isolated from forest soil were characterized by surface tension measurements, dynamic light scattering, and laser doppler electrophoresis. The surface tension of HA and its sub-fractions reduced from 72.4 mN·m−1 to 36.8 mN·m−1 in exponential model with the increasing concentration from 0 to 2000 mg·L−1. The critical micelle concentration (CMC) and Z-average particle size ranged from 216–1024 mg·L−1 and 108.2–186.9 nm for HA and its sub-fractions, respectively. The CMC have related with alkyl C, O-alkyl C, aromatic C, and carbonyl C (p < 0.05), respectively, and could be predicted with the multiple linear regression equation of CMC, CMC = 18896 − 6.9 × C-296 × alkyl C-331 × aromatic C-17019 × H/C + 4054 × HB/HI (p < 0.05). The maximum particle size was 5000 nm after filtered by a membrane with pore size of 450 nm, indicating HA and its sub-fractions could progressed self-assembly at pH 6.86. The aggregate sizes of number-base particle size distributions were mainly in six clusters including 2 ± 1 nm, 5 ± 2 nm, 10 ± 3 nm, 21 ± 8 nm, 40 ± 10 nm, and >50 nm analyzed by Gaussian model that maybe due to the inconsistency of the components and structures of the HA sub-fractions, requiring further study. It is significance to explore the surface activity of HA and its sub-fractions, which is helpful to clarify the environmental behavior of HA.

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