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Process for preparing sulfide-polymer composite micro sphere with surface pattern

A technology of composite microspheres and surface patterns, applied in sulfur-containing fields, to achieve high specific surface area, feasible process and reasonable design

Inactive Publication Date: 2004-02-11
SHAANXI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the preparation of spherical organic / inorganic composites with specific surface patterns using microgels as templates has not been reported.

Method used

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  • Process for preparing sulfide-polymer composite micro sphere with surface pattern
  • Process for preparing sulfide-polymer composite micro sphere with surface pattern
  • Process for preparing sulfide-polymer composite micro sphere with surface pattern

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] This embodiment provides a preparation method of surface patterned P(NIPAM-co-MAA)-CdS composite microspheres, and the process steps are as follows:

[0035] (1) Preparation of mixed surfactant

[0036] The span-80 and tween-80 were mixed in a weight ratio of 5:1 to prepare a mixed surfactant.

[0037] (2) Preparation of oil phase

[0038] The prepared mixed surfactant was added to a three-necked flask containing n-heptane, and the mixed surfactant and n-heptane were mixed in a weight ratio of 1:122 to form an oil phase.

[0039] (3) Emulsification

[0040] The oil phase prepared in (2) is stirred at a temperature of 25° C. with a stirring speed of 300-350 rev / min, nitrogen is introduced, and emulsified for 1 hour to prepare an emulsion.

[0041] (4) Preparation of water phase

[0042] Dissolve 1.2g of N-isopropylacrylamide and methacrylic acid mixed monomer in 5mL of secondary water, the weight percentage of methacrylic acid in the mixed monomer is 15%, and then ad...

Embodiment 2

[0048] In this embodiment, in the process step of (4) preparing the aqueous phase, the weight percentage of methacrylic acid in the mixed monomer of N-isopropylacrylamide and methacrylic acid is 20%. Other process steps are the same as in Example 1.

Embodiment 3

[0050] In this example, in the process step of (2) preparing the oil phase, the mixed surfactant and n-heptane are mixed in a weight ratio of 1:115 to prepare the oil phase. In (3) the emulsification process step, the emulsification temperature was 18°C. In (4) the process step of preparing the water phase, the weight percentage of methacrylic acid in the mixed monomer of N-isopropylacrylamide and methacrylic acid is 5%, then 0.015g NaOH is added to neutralize the methacrylic acid, and then Add 0.04g N,N'-methylenebisacrylamide, 80mg potassium persulfate and Cd(Ac) with a concentration of 0.3mol / L 2 The solution is 1.5 mL, stirred, mixed evenly, filtered, and the total volume of the aqueous phase is 8-10 mL. Other process steps are the same as in Example 1.

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Abstract

The preparation of sulfide / polymer composition microsphere with surface pattern includes preparing mixed surfactant, compounding oil phase, emulsifying, preparing water phase, preparing copolymer gelcontaining Cd, Pb, Zn or Cu ion, and preparing composition microsphere of P(NIPAM-co-MAA) and CdS, PbS, ZnS or CuS. The present invention has the advantages of reasonable design, feasible technological process, simple operation, short reaction time, reaction at normal temperature, etc. The present invention makes it possible to control the surface appearance via design, and the composite material of the present invention has rigidity and stability similar to those of inorganic material as well as flexibility similar to that of organic material. With great specific surface area and light weight, the composite material may find its application in wave absorbing, damping, carrying catalyst, adsorbing separation and other aspects.

Description

technical field [0001] The invention belongs to the technical field of using inorganic substances or non-polymer organic substances as compound materials, and specifically relates to compounds containing sulfur, selenium or tellurium using inorganic compounds. Background technique [0002] There are many preparation methods of micro-nano organic-inorganic composites, but there are mainly the following four methods, namely sol-gel method, intercalation method, blending method and filling method. Various methods have certain shortcomings, such as the complex synthesis process of the sol-gel method, and the limited selection of nanomaterials and organic polymer materials. There are not many inorganic materials for the intercalation method, and the main research at present is montmorillonite. Although the blending method is the simplest and most convenient preparation method of organic-inorganic composite materials, it is difficult to ensure the uniform composite of organic com...

Claims

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Application Information

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IPC IPC(8): B01J13/14
Inventor 房喻白超良张颖王珊胡道道王明珍高莉宁
Owner SHAANXI NORMAL UNIV
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