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Preparation method of temperature response macromolecular gelatinous fibre material and products thereof

A polymer gel, temperature-responsive technology, used in spinning solution preparation, wet spinning, conjugated synthetic polymer rayon, etc., can solve the problems of unstable gel fiber performance, enhanced mechanical properties, etc. Easy industrial implementation, high elastic modulus, good biocompatibility

Inactive Publication Date: 2010-06-23
TIANJIN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] 2. The mechanical properties will be greatly enhanced
But at the same time, it was also found that because PNIPAAm is soluble in water at room temperature, the performance of the prepared gel fiber is not stable [X.Feng, L.chen, L.L.Ju, Y.P.zhao, Proceedings of SPIE, 2007, 64231J]

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] (1) Prepare PNIPAAm / PVA gel fiber spinning dope. Dissolve 4.4g of PVA in 44ml of deionized water at 98°C, stir and dissolve for 3 hours to obtain a transparent aqueous solution, cool to room temperature naturally, add 1.1g of NIPAAm monomer and 0.011g of initiator APS, and then add accelerator TEMED 100 μl, the mother solution was stirred and mixed for 1 hour, and N2 was bubbled for 30 minutes to remove oxygen. The above mixed solution was sealed in a wide-mouthed flask, and polymerized at a water bath temperature of 60° C. for 7 hours to obtain a milky white PNIPAAm / PVA mixed solution, which was used as a spinning stock solution.

[0029] (2) Preparation of PNIPAAm / PVA polymer nascent gel fibers. Pour the above spinning stock solution into a syringe, heat it in a water bath to 90°C, squeeze it into the configured saturated ammonium sulfate coagulation bath at room temperature, coagulate and fix it for 30 minutes, soak it in deionized water for 6 days, and remove unpol...

Embodiment 2

[0032] (1) Prepare PNIPAAm / PVA gel fiber spinning dope. Dissolve 4.4g of PVA in 44ml of deionized water at 98°C, stir and dissolve for 3 hours to obtain a transparent aqueous solution, cool to room temperature naturally, add 0.88g of NIPAAm monomer and 0.0044g of initiator APS, and then add accelerator TEMED90μl , The mother liquor was stirred and mixed for 2h, and N2 was bubbled for 30 minutes to remove oxygen. The above mixed solution was sealed in a wide-mouthed flask, and polymerized for 6 hours at a water bath temperature of 70° C. to obtain a milky white PNIPAAm / PVA mixed solution, which was used as a spinning stock solution.

[0033] (2) Preparation of PNIPAAm / PVA polymer nascent gel fibers. With embodiment 1.

[0034] (3) Heat treatment of PNIPAAm / PVA polymer gel fiber. Naturally dry the nascent gel fibers at room temperature for more than 48 hours, continue to dry at 40°C for 24 hours, then vacuum-dry at this temperature for 24 hours, keep the vacuum condition and ...

Embodiment 3

[0036] (1) Prepare PNIPAAm / PVA gel fiber spinning dope. Dissolve 4.4g of PVA in 44ml of deionized water at 98°C, stir and dissolve for 4 hours to obtain a transparent aqueous solution, cool to room temperature naturally, add 0.66g of NIPAAm monomer and 0.0099g of initiator APS, and then add accelerator TEMED120μl , The mother liquor was stirred and mixed for 2h, and N2 was bubbled for 30 minutes to remove oxygen. The above mixed solution was sealed in a wide-mouthed flask, and polymerized at a water bath temperature of 65° C. for 7 hours to obtain a milky white PNIPAAm / PVA mixed solution, which was used as a spinning stock solution.

[0037] (2) Preparation of PNIPAAm / PVA polymer nascent gel fibers. With embodiment 1.

[0038] (3) Heat treatment of PNIPAAm / PVA polymer gel fiber. With embodiment 2.

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Abstract

The invention relates to a preparation method of temperature response macromolecular gelatinous fibre material and products thereof, which can be applied on artificial muscles. Temperature response gelatinous fibre is produced by the mutual penetrating mixture of poly (N-isopropylacrylamide) and polyvinyl alcohol by a wet spinning process. The poly (N-isopropylacrylamide) and the polyvinyl alcohol are respectively 5 percent to 25percent by weight percent. The preparation method comprises the following three steps: 1, utilizing an in-situ polymerization method to polymerize the poly (N-isopropylacrylamide) in a polyvinyl alcohol water solution system, and preparing polyvinyl alcohol / poly (N-isopropylacrylamide) spinning solution; 2, taking saturation ammonium persulfate solution as coagulating bath, and utilizing the wet spinning process to prepare polyvinyl alcohol / poly (N-isopropylacrylamide) primary gelatinous fibre; and 3, carrying out vacuum heat treatment on the primary gelatinous fibre, and improving the heat resistance and structural stability of the primary gelatinous fibre. Compared with the traditional temperature response gelatinous fibre, the polyvinyl alcohol / poly (N-isopropylacrylamide) primary gelatinous fibre of the invention has good strength, rapid response speed, good biocompatibility, and wide application prospect on the artificial muscles and other biological fields.

Description

technical field [0001] The invention relates to intelligent polymer material technology, in particular to an interpenetrating blend of poly N-isopropylacrylamide (PNIPAAm) and polyvinyl alcohol (PVA) that can be used in artificial muscles through a wet spinning process The produced temperature-sensitive polymer gel fiber material and its preparation method. It belongs to the field of functional polymers. Background technique [0002] Artificial muscles refer to materials that are driven by electric fields or chemically without mechanical devices. Materials currently used to prepare artificial muscles include polymer gels, conductive polymer materials, liquid crystal polymer materials, supramolecular systems, and metal-polymer composite materials. Among them, polymer gels have attracted widespread attention due to their good biocompatibility. Polymer gel is a multi-component system composed of a polymer three-dimensional network and a solvent. ), etc., producing polymer n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F8/10D01D5/06D01D1/02A61L27/48A61L27/50
Inventor 冯霞陈莉赵义平赵后昌
Owner TIANJIN POLYTECHNIC UNIV
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