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Synthetic method of responsive amino-modified polyether organic silicon surfactant

A polyether silicone and surfactant technology, applied in chemical instruments and methods, transportation and packaging, dissolution, etc., to achieve the effects of increasing lipophilicity, easy spreading, and improving defoaming ability

Inactive Publication Date: 2020-05-15
NANJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are still differences between domestic polyether modified silicone oils and imported modified silicone oils, so in recent years people have paid more attention to the development and application of modified polyether silicone oils

Method used

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  • Synthetic method of responsive amino-modified polyether organic silicon surfactant
  • Synthetic method of responsive amino-modified polyether organic silicon surfactant
  • Synthetic method of responsive amino-modified polyether organic silicon surfactant

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Effect test

Embodiment 1

[0025] Due to the presence of the amine group in the hydrophilic head group of the surfactant, compound A can bind protons in the solution, and the surfactant has two forms of cation and anion in the solution as the pH of the solution changes. Due to the difference in the charge repulsion between the two forms of head groups and the hydrophilic ability of the head group, the corresponding parameters of compound A are also significantly different. Therefore, as the pH of the solution changes, the morphology of the aggregates may also change. Combined with the visual phenomenon of its surfactants at different pHs at the same mass concentration, we can preliminarily speculate on the transformation of its aggregates. As the pH of the solution increases, the sample changes from a colorless transparent solution to a blue opalescent solution, and it is speculated that a large self-assembly appears. Compound A solution has the property of pH-induced aggregation behavior change.

[0...

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Abstract

The invention discloses a synthetic method of a responsive amino-modified polyether organic silicon surfactant. The synthetic method comprises the following steps: 1) synthesizing low-hydrogen silicone oil: sequentially adding quantitative silicone oil with a high hydrogen content, D4, MM, and sulfuric acid into a reactor, starting a stirrer, heating to 50-60 DEG C, reacting for a period of time,regulating the pH value of the product to 7.0 by using sodium carbonate after the required viscosity is reached, and carrying out suction filtration by using a filter flask to obtain colorless transparent silicone oil with a high hydrogen content; 2) preparing polyether and allyl glycidyl ether co-modified organic silicon: taking a certain amount of PHMS, allyl glycidyl ether and an epoxy stabilizer, sequentially adding into a reactor; introducing protective N2 into the reactor, starting the stirrer, raising the temperature to 80 DEG C, adding chloroplatinic acid, carrying out reactions for 1h at a constant temperature of 90 DEG C, then adding allyl polyoxyethylene polyoxypropylene alcohol and chloroplatinic acid into the reactor, and carrying out reactions at 90-100 DEG C until the mixture becomes transparent; and 3) synthesizing amino modified polyether organic silicon.

Description

technical field [0001] The invention relates to a synthesis method of a surfactant, in particular to a synthesis method of a responsive amino-modified polyether silicone surfactant. Background technique [0002] The rich and diverse aggregation structures from the microscale to the nanoscale make surfactants play an important role in many fields such as materials science, nanoscience, and biomedicine. Therefore, the regulation of the aggregation behavior of surfactants has become a hot topic of current research. If a stimulus-responsive group is introduced into the structure of the surfactant, the surfactant can respond to external stimuli by changing external factors, thereby developing this type of new surfactant has potential value, such as: developing new Separation methods, gene transfection agents, controlled release of carrier drugs. Among them, high-molecular surfactants have some characteristics that low-molecular surfactants do not have, such as: good thickening ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G77/46B01F17/54B01F17/52C09K23/52C09K23/54
CPCC08G77/46C09K23/16
Inventor 姚成武前松郭毅
Owner NANJING UNIV OF TECH
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