Check patentability & draft patents in minutes with Patsnap Eureka AI!

Polystyrene-SiO2 core-shell nano composite particle with wrinkled surface and preparation method of polystyrene-SiO2 core-shell nano composite particle

A technology of nanocomposite particles and polystyrene, which is applied in the field of polystyrene-SiO2 core-shell nanocomposite particles and its preparation, and can solve the problems that core-shell nanocomposite particles are rarely reported.

Pending Publication Date: 2022-05-10
UNIV OF SHANGHAI FOR SCI & TECH
View PDF12 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In terms of appearance, the polymer-SiO directly prepared by the above method 2 The core-shell nanocomposite particles are basically spherical or raspberry-like, while polymer-SiO with concave surfaces 2 Core-shell nanocomposite particles are rarely reported

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Polystyrene-SiO2 core-shell nano composite particle with wrinkled surface and preparation method of polystyrene-SiO2 core-shell nano composite particle
  • Polystyrene-SiO2 core-shell nano composite particle with wrinkled surface and preparation method of polystyrene-SiO2 core-shell nano composite particle
  • Polystyrene-SiO2 core-shell nano composite particle with wrinkled surface and preparation method of polystyrene-SiO2 core-shell nano composite particle

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0027] The present invention provides surface wrinkled polystyrene-SiO 2 Core-shell nanocomposite particles and a preparation method thereof, specifically comprising the following steps:

[0028] Step 1, on SiO 2 Emulsion polymerization of styrene in water in the presence of hydrosol, SiO 2 The hydrosol is commercially available glycerin functionalized SiO 2 Hydrosol and SiO 2 The weight ratio of hydrosol and styrene is 1:5, and the process of emulsion polymerization includes: first styrene, SiO 2 Add the hydrosol and water into a 100mL three-necked round-bottomed flask equipped with a condenser tube and a magnetic stirrer, pass nitrogen gas for 30 minutes, then continue to pass nitrogen gas and heat the oil bath to 60°C, then add 50 mg of azo to the first reaction vessel A solution of diisobutylamidine hydrochloride dissolved in 4g of water initiates polymerization, stir at 60°C and allow the reaction to continue for 24 hours. After the reaction is stopped, the reaction p...

Embodiment 3

[0049] This example provides surface wrinkled polystyrene-SiO 2 Core-shell nanocomposite particles and their preparation method are variations of Example 1. The variation is that in step 3, 150 mg of sodium lauryl sulfate is used to prepare toluene / water / sodium lauryl sulfate emulsion, specifically including The following steps:

[0050] Step 1, 5g styrene, 1.25g 40wt% SiO 2Add the hydrosol and 40.25g of water into a 100mL three-neck round-bottomed flask with a condenser tube and a magnetic stirrer, blow in nitrogen for 30 minutes, then continue to blow in nitrogen and heat the oil bath to 60°C, then inject 50mg of azobis A solution of isobutylamidine hydrochloride in 4 g of water was used to initiate polymerization, and the reaction was continued for 24 hours under stirring at 60° C., and the reaction product was obtained after stopping the reaction. The reaction product was centrifuged and washed 5 times (centrifugal speed 6000rpm, 30 minutes each time), and the supernatan...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides polystyrene-SiO2 core-shell nano composite particles with wrinkled surfaces and a preparation method of the polystyrene-SiO2 core-shell nano composite particles. The preparation method comprises the following steps: step 1, carrying out emulsion polymerization on styrene by using SiO2 hydrosol, water and styrene to prepare PS-SiO2 particles; 2, adding PS-SiO2 particles, water and lauryl sodium sulfate into a second reaction container, and carrying out ultrasonic treatment to form a PS-SiO2 particle / water / lauryl sodium sulfate dispersion liquid; 3, adding toluene, water and lauryl sodium sulfate into a third reaction container, and carrying out ultrasonic emulsification at a predetermined emulsification temperature within a predetermined emulsification time to obtain a toluene / water / lauryl sodium sulfate emulsion; and step 4, adding the toluene / water / lauryl sodium sulfate emulsion into the PS-SiO2 particle / water / lauryl sodium sulfate dispersion liquid while stirring to swell the particles at a predetermined swelling temperature for a predetermined time at a predetermined speed, and after the swelling is ended, centrifugally washing and drying the product to obtain the PS-SiO2 particles with wrinkled surfaces.

Description

technical field [0001] The invention belongs to the field of polymer particles, in particular to a wrinkled polystyrene-SiO 2 Core-shell nanocomposite particle and its preparation method. Background technique [0002] The appearance shape of colloidal particles is one of its basic characteristics, which has an important influence on the physical and chemical properties of colloidal particles. Due to the existence of surface tension, polymer particles prepared by heterogeneous polymerization are usually spherical. Besides, polymer particles with various non-spherical shapes, such as raspberry, peanut, snowman, disk, cylinder, depression, golf ball, etc., have been extensively studied. In recent years, polymer particles with wrinkled surfaces have also attracted research interest. This is not only due to its shape similar to things in nature and life such as plant pollen, human fingerprints, and dehydrated fruits, but also because of its large surface area, which has import...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C08F112/08C08F2/44C08F2/22C08K3/36C08J3/00
CPCC08F112/08C08K3/36C08J3/00C08J2325/06C08F2/44C08F2/22
Inventor 邹华吕永亮
Owner UNIV OF SHANGHAI FOR SCI & TECH
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com