Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A method for preparing polymer nanowires with controllable molecular orientation

A molecular orientation and polymer technology, applied in the field of materials, can solve the problems affecting actual use, many defects in molecular chain arrangement, and imperfect molecular orientation, and achieve the effects of uniform orientation, high crystallinity, and controllable orientation.

Active Publication Date: 2021-07-30
SHENZHEN UNIV
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the three-dimensional confinement of polymers, the orientation of molecular chains has not been explained clearly so far.
[0005] At present, the existing technology uses electrospinning to prepare polymers to make one-dimensional nanofibers, but the molecular orientation is not perfect, and there are many defects in the molecular chain arrangement, which affects the actual use.

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
  • A method for preparing polymer nanowires with controllable molecular orientation
  • A method for preparing polymer nanowires with controllable molecular orientation
  • A method for preparing polymer nanowires with controllable molecular orientation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043]The preparation and characterization of polymer nanowires with controllable molecular orientation mainly include the following five steps, such as figure 2 shown.

[0044] Step S1, preparing a nanoporous alumina template, wherein the template has nanocylindrical holes in a hexagonal arrangement, and the diameter of the nanoholes is 10-1000 nanometers;

[0045] The anodized aluminum template is an inorganic metal oxide template with nano-cylindrical holes. The nano-cylindrical holes in the template are arranged in a hexagonal manner, and its scanning electron microscope image is shown in figure 1 shown.

[0046] Anodized aluminum templates are prepared by a two-step anodization method. The diameter of the nanopores in the inorganic alumina template can be adjusted by selecting different electrolytes and voltages. The inorganic alumina template component is alumina, and its surface tension is much greater than that of the polymer. Therefore, the semiconducting polyme...

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

PropertyMeasurementUnit
diameteraaaaaaaaaa
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention provides a method for preparing a polymer nanowire with a controllable molecular orientation, which comprises the following steps: preparing a nanoporous alumina template; melting and pressing the polymer into a polymer film with a thickness of about 10-200 microns; The polymer film is placed under the nanoporous alumina template, and the two are in close contact. In a vacuum environment, heat to 30-50°C above the melting point of the polymer, and keep it for more than 24 hours, so that it is sucked into the porous oxide film. then cooled to 40-110°C below the melting point of the polymer for more than 10 hours; then cooled to room temperature; removed excess material on the surface of the template; immersed the polymer-containing nanoporous alumina template into hydrogen peroxide In the potassium solution, after the template material is dissolved, the oriented polymer nanowires are obtained. The orientation of the polymer molecular chains obtained by adopting the technical solution of the present invention is controllable, and the molecular orientation of the obtained polymer nanowires is uniform.

Description

technical field [0001] The invention belongs to the technical field of materials, and in particular relates to a method for preparing polymer nanowires with controllable molecular orientation. Background technique [0002] The molecular chain orientation of polymers can be regulated by the restricted growth of polymers in different dimensions at the nanoscale. Polymer growth in thin films is considered one-dimensionally confined; polymer growth in nanocylindrical pores is defined as two-dimensionally confined; and polymer growth in spherical particles is defined as three-dimensionally confined. In one-dimensional confinement (thin film growth), block copolymers will produce microscopic phase separation in the film, and the morphology and structure of the microscopic phase are affected by the film thickness. Chemical modification of the film substrate surface and control of the film thickness can tune the microscopic phase morphology and structure. [0003] In the two-dimen...

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
Patent Type & Authority Patents(China)
IPC IPC(8): D01F6/60D01F6/80D01F6/10B82Y40/00B82Y30/00
CPCB82Y30/00B82Y40/00D01F6/10D01F6/60D01F6/80
Inventor 曹艳余诗晨曾兴明赖紫薇黄加满
Owner SHENZHEN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products