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Preparation method for nano-emulsion with stable polymers

A technology of nanoemulsions and polymers, which is applied in the direction of drilling compositions, chemical instruments and methods, chemical/physical processes, etc., can solve the problems of poor stability of nanoemulsions, easy to pollute preparations, high cost, etc., and achieve simple and easy preparation methods Operation, low energy consumption, low cost effect

Active Publication Date: 2013-07-10
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the traditional high-energy preparation method of nanoemulsion can be mass-produced, it consumes high energy, has high cost, and is easy to contaminate the preparation; for the nanoemulsion prepared by the low-energy method, great progress has been made in recent years, but the prepared nanoemulsion is stable. Poor, generally requires additives to stabilize nanoemulsions

Method used

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  • Preparation method for nano-emulsion with stable polymers
  • Preparation method for nano-emulsion with stable polymers
  • Preparation method for nano-emulsion with stable polymers

Examples

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Comparison scheme
Effect test

Embodiment 1

[0043] Example 1: Preparation of partially hydrolyzed polyacrylamide (HPAM-1) stabilized nanoemulsion

[0044] The nanoemulsion is based on 100 parts by weight, and the components are as follows: 20 parts of liquid paraffin, 5.12 parts of nonionic surfactant Tween20, 4.88 parts of nonionic surfactant Span20, partially hydrolyzed polyacrylamide (average molecular weight is 12 million, degree of hydrolysis 18 %, abbreviated HPAM-1) 7×10 -5 ~1.4×10 -2 portion, the balance is water.

[0045] The preparation steps are as follows:

[0046] (1) Weigh 1.25g HPAM-1 and dissolve it in 250ml tertiary water to obtain 0.5wt% HPAM-1 mother liquor.

[0047] (2) Weigh 1.28g of nonionic surfactant Tween20 and 1.22g of Span20 into a 30ml bottle, then add 5g of oil-phase liquid paraffin respectively, and stir at a high speed of 15-20°C and 1000-2000rpm for 5-10min. A total of 9 bottles (marked as A-I) of nanoemulsion mixture were prepared.

[0048] (3) Dilute an appropriate amount of 0.5wt%...

Embodiment 2

[0050] The particle size variation trend diagram and particle size distribution of the obtained HPAM-1O / W emulsion with the change of polymer concentration are as follows: image 3 As shown in (A, C), the surface tension and oil-water interfacial tension of pure HPAM-1 aqueous solution and O / W emulsion at the same concentration are as follows Figure 4 As shown in (A,C), the zeta potential of the emulsion with polymer concentration is as follows Figure 5 As shown in (A), the viscosity changes of the emulsions with different polymer concentrations as a function of shear rate are as follows: Image 6 As shown in (A), the zero-shear viscosity change of the emulsion at different polymer concentrations is as follows: Figure 7 shown in (A). Example 2: Preparation of Hydrophobically Modified Polyacrylamide (HMPAM-1) Stabilized Nanoemulsion

[0051] The nanoemulsion is based on 100 parts by weight, and the components are as follows: 20 parts of liquid paraffin, 5.12 parts of noni...

Embodiment 3

[0056] The particle size variation trend diagram and particle size distribution of HMPAM-1O / W emulsion with the change of polymer concentration are as follows: image 3 As shown in (B, D), the surface tension and oil-water interfacial tension of pure HMPAM-1 aqueous solution and O / W emulsion at the same concentration are as follows Figure 4 As shown in (B,D), the zeta potential of the emulsion with polymer concentration is as follows Figure 5 As shown in (B), the viscosity changes of the emulsions with different polymer concentrations as a function of shear rate are as follows: Image 6 As shown in (B), the zero-shear viscosity change of the emulsion at different polymer concentrations is as follows Figure 7 (B). Example 3: Preparation of partially hydrolyzed polyacrylamide (HPAM-2) stabilized nanoemulsion

[0057] The nanoemulsion is based on 100 parts by weight, and the components are as follows: 20 parts of n-heptane, 5.12 parts of nonionic surfactant Tween 60, 4.88 p...

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Abstract

The invention relates to a preparation method for nano-emulsion with stable polymers. The nano-emulsion comprises the following components in 100 parts by weight: 20-60 parts of oil phases, 5-10 parts of nonionic surfactants, 7*10<-5>-7*10<-2> parts of polymers and the balance of water. The preparation method comprises the following steps of: proportioning the nonionic surfactants into mixed emulgators by adopting a constant-temperature invert emulsion method, mixing the mixed emulgators with the oil phases, and dripping the mixture into aqueous phase containing the polymers under a high-speed stirring condition, so as to form the stable nano-emulsion. The preparation method has the characteristics that the components are simple, the operation is easy, the particle diameter of the prepared oil-in-water nano-emulsion is fine, the kinetic stability is durable, the energy consumption is small, and the cost is low.

Description

technical field [0001] The invention relates to a preparation method of a nanoemulsion, in particular to a low-energy preparation method of a polymer-stabilized nanoemulsion. Background technique [0002] Emulsion refers to a dispersed system formed by dispersing the dispersed phase in the form of small droplets in a continuous phase composed of another phase (non-solvent). It is a thermodynamically unstable polydispersed system. Between 50 and 500 nm in diameter, the emulsion becomes a nanoemulsion. As a special type of emulsion, nanoemulsion has smaller droplet particle size, uniform dispersion, and certain dynamic stability compared with ordinary emulsions. More excellent properties and application prospects. Therefore, nano-emulsification technology has penetrated into the fields of petrochemical industry, daily chemical industry, fine chemical industry, material science, biotechnology and environmental science, and has become a research field with huge application pot...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01F17/00C09K8/584C09K23/00
Inventor 辛霞杨乔徐桂英任华英卢杭
Owner SHANDONG UNIV
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