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

A technology of composite microspheres and surface patterns, which is applied in the sulfur-containing field to achieve the effect of reasonable design, high specific surface area and small mass

Inactive Publication Date: 2005-03-02
SHAANXI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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
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Effect test

Embodiment 1

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

[0035] (1) Preparation of mixed surfactant

[0036] Mix Span-80 and Tween-80 at a weight ratio of 5:1 to prepare a mixed surfactant.

[0037] (2) Preparation of oil phase

[0038] Add the prepared mixed surfactant into a three-necked flask filled with n-heptane, and mix the mixed surfactant and n-heptane at a weight ratio of 1:122 to form an oil phase.

[0039] (3) emulsification

[0040] Stir the oil phase prepared in (2) with a stirrer at a temperature of 25° C. at a stirring speed of 300 to 350 rpm, feed nitrogen gas, and emulsify 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, and the weight percentage of methacrylic acid in the mixed monomer is 15%, and then add 0.06g of NaOH ...

Embodiment 2

[0048] In this embodiment, 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 20%. Other processing steps are identical with embodiment 1.

Embodiment 3

[0050] In this embodiment, in (2) the process step of preparing the oil phase, the mixed surfactant and n-heptane are mixed at a weight ratio of 1:115 to prepare the oil phase. In (3) emulsification process step, the emulsification temperature is 18°C. In (4) preparation of aqueous phase process step, the percentage by weight of methacrylic acid in N-isopropylacrylamide and methacrylic acid mixed monomer is 5%, then add 0.015g NaOH to neutralize methacrylic acid, then Add 0.04g N,N'-methylenebisacrylamide, 80mg potassium persulfate and Cd(Ac) at a concentration of 0.3mol / L 2 Solution 1.5mL, stir, mix evenly, filter, the total volume of the aqueous phase is 8-10mL. Other processing steps are identical with embodiment 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 gel containing 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-high-molecular organic substances as compound materials, and specifically relates to sulfur-, selenium- or tellurium-containing compounds using inorganic ingredients. Background technique [0002] There are many methods for preparing micro-nano organic-inorganic composite materials, but there are four main methods, namely sol-gel method, intercalation method, blending method and filling method. Various methods have certain shortcomings, for example, the synthesis process of the sol-gel method is complicated, and the choice of nanomaterials and organic polymer materials is not large. There are not many inorganic materials to choose from for the intercalation method. At present, the main research is montmorillonite. Although the blending method is the simplest and most convenient method for preparing organic-inorganic composite materials, it is difficult to ensure the unif...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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