Composite electrostatic spinning integrated by initiator and preparation method thereof

A technology of electrospinning and composite electrostatics, which is applied in the direction of spinning solution preparation, conjugated synthetic polymer artificial filament, textiles and papermaking, etc. Issues such as technical implications

Inactive Publication Date: 2010-06-16
SUZHOU INST OF NANO TECH & NANO BIONICS CHINESE ACEDEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Ma Hongwei's group once invented an initiator-integrated polydimethylsiloxane, and used SIP technology to chemically graft the surface of polydimethylsiloxane (Wu, Y.Z.; Huang, Y.Y.; Ma, H.W., A facile method for permanent and functional surface modification of poly(dimethylsiloxane). Journal of the American Chemical Society2007, 129, 7226.), but this technology only mentions that the initiator is chemically bonded to polydimethylsiloxane surface, so that the polymer layer on the surface-initiated polymerization modification can be stable and durable, and it is disclosed that it can be applied to biocompatibility, organic solvent compatibility, and heat-sensitive materials. The technical enlightenment of the application of polydimethylsiloxane as an additive in the field of electrospinning
Therefore, how to develop a set of electrospinning preparation and surface modification system based on mature electrospinning materials, from the perspective of material design, combined with surface modification technology for specific application requirements is the solution to the current surface function of electrospinning. An important way to solve problems such as poor performance and failure to meet application requirements

Method used

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  • Composite electrostatic spinning integrated by initiator and preparation method thereof
  • Composite electrostatic spinning integrated by initiator and preparation method thereof
  • Composite electrostatic spinning integrated by initiator and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Preparation of Polystyrene as Polymer Backbone by Initiator-Integrated Composite Electrospinning. Specific steps are as follows:

[0032] Weigh 10g polystyrene (PS) and 5g polydimethylsiloxane (PDMS) precursors and dissolve them in 90g tetrahydrofuran (THF), add 0.5g PDMS self-contained curing agent and 0.05g initiator A (structure: ).

[0033] Among them, PS molecular formula: Molecular formula of PDMS precursor: Molecular formula of curing agent:

[0034] The above mixture was magnetically stirred for 5-12 hours to prepare a uniform spinning solution. Such as figure 1 As shown, the spinning solution 2 is placed in the spinneret 1 , the working distance between the spinneret and the receiving substrate 5 is 10 cm, and a voltage of 10 kV is applied by a high voltage power supply 3 . Electrospinning 4 is deposited on a receiving substrate 5 . The prepared PS-PDMS composite electrospinning was heated to 65°C for 5 hours, the PDMS precursor was cured into PDMS...

Embodiment 2

[0036] Using the same method as in Example 1, the preparation of polyacrylonitrile is the composite electrospinning of the initiator integration of the macromolecular skeleton, and the specific steps are as follows:

[0037] Weigh 20g polyacrylonitrile (PAN) and 10g polydimethylsiloxane (PDMS) precursors and dissolve them in 80g dimethylformamide (DMF), add 1g PDMS self-contained curing agent and 0.1g initiator A (the structural formula is the same as above). The above mixture was magnetically stirred for 5-12 hours to prepare a uniform spinning solution. Such as figure 1 As shown, the spinning solution 2 is placed in the spinneret 1 , the working distance between the spinneret and the receiving substrate 5 is 10 cm, and a voltage of 10 kV is applied by a high voltage power supply 3 . Electrospinning 4 is deposited on a receiving substrate 5 . The prepared PAN-PDMS composite electrospinning was heated to 65°C for 5 hours, the PDMS precursor was cured into PDMS elastomer un...

Embodiment 3

[0039] Using the same method as in Example 1, changing the amount of curing agent and the type of initiator, the preparation of polystyrene is the composite electrospinning of the integration of the initiator of the polymer skeleton, and the specific steps are as follows:

[0040] Weigh 10g polystyrene (PS) and 5g polydimethylsiloxane (PDMS) precursors and dissolve them in 90g tetrahydrofuran (THF), add 1.0g PDMS self-contained curing agent and 0.05g initiator B (structural formula: ). The above mixture was magnetically stirred for 5-12 hours to prepare a uniform spinning solution. Such as figure 1 As shown, the spinning solution 2 is placed in the spinneret 1 , the working distance between the spinneret and the receiving substrate 5 is 10 cm, and a voltage of 10 kV is applied by a high voltage power supply 3 . Electrospinning 4 is deposited on a receiving substrate 5 . The prepared PS-PDMS composite electrospinning was heated to 65°C for 5 hours, the PDMS precursor was c...

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Abstract

The invention relates to the electrostatic spinning filed, in particular to composite electrostatic spinning integrated by initiator and a preparation method thereof. The composite electrostatic spinning of the invention is composed of skeleton high polymer, polydimethyl siloxane and initiator, wherein, the mass ratio of the skeleton high polymer to the polydimethyl siloxane is 90:10-10:90, the mass ratio of the polydimethyl siloxane to the initiator is 1:0.1-1:10-9, and the diameter of the composite electrostatic spinning is 50nm-10 mu m. The method of the invention comprises the following steps: dissolving the skeleton high polymer and the precursor of the polydimethyl siloxane, curing agent and the initiator in corresponding solvents to prepare uniform spinning solution, performing electrostatic spinning, heating and curing spinning products, curing the precursor of the polydimethyl siloxane under the action of the curing agent to form a three-dimensional network structure, and covalently fixing the initiator on the polydimethyl siloxane. The product of the invention is composite electrostatic spinning integrated by the initiator, and the initiator is covalently combined on the surface of the electrostatic spinning, therefore, compared with other methods, the electrostatic spinning of the invention is more stable and durable.

Description

technical field [0001] The invention relates to the field of electrospinning, in particular to a composite electrospinning comprising polydimethylsiloxane integrated with a skeleton polymer and an initiator and a method for preparing the electrospinning. Background technique [0002] Since 2000, electrospinning technology has become a research hotspot in polymer science and nanotechnology (Greiner, A.; Wendorff, J.H., Electrospinning: A fascinating method for the preparation of ultrathin fibers. Angewandte Chemie-International Edition 2007, 46, 5670 ; Li, D.; Xia, Y.N., Electrospinning of nanofibers: Reinventing the wheel? Advanced Materials 2004, 16, 1151.). The application of electrospinning is the most basic driving force and ultimate goal of electrospinning research. However, there are currently limited materials with good spinning performance, capable of forming nanofibers and assembling into thin films, such as polyvinyl alcohol (PVA), polyoxyethylene (PEO), polyvinyl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F8/04D01D1/02D01D5/00
Inventor 仰大勇马宏伟
Owner SUZHOU INST OF NANO TECH & NANO BIONICS CHINESE ACEDEMY OF SCI
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