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Preparation method of propylene carbonate/polylactic acid complex fiber film and prepared propylene carbonate/polylactic acid complex fiber film

A polypropylene carbonate and composite fiber membrane technology, applied in the direction of one-component polycarbonate rayon, fiber treatment, one-component polyester rayon, etc., can solve poor compatibility, high cost, Problems such as incoherent spinning

Inactive Publication Date: 2017-12-15
JIAXING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In order to overcome the disadvantages of poor compatibility, high cost, and easy spinning incoherence caused by solute deposition or too high concentration when preparing polypropylene carbonate / polylactic acid composite fiber membranes, the present invention provides a A method for preparing polypropylene carbonate / polylactic acid composite fiber membrane and the prepared polypropylene carbonate / polylactic acid composite fiber membrane, which adopts a unique conjugated electrospinning method, through preferred polypropylene carbonate and polylactic acid The mass ratio is combined with the optimal conjugate electrospinning parameters to prepare a polypropylene carbonate / polylactic acid composite fiber membrane with relatively uniform fiber diameter and uniform porous distribution.

Method used

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  • Preparation method of propylene carbonate/polylactic acid complex fiber film and prepared propylene carbonate/polylactic acid complex fiber film

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Experimental program
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Effect test

Embodiment 1

[0032] Select dichloromethane as solvent, and the preparation concentration is 8% PPC solution and 4% PLA solution, the number average molecular weight of described polypropylene carbonate is 90000, and the molecular weight distribution width is 1.3; The number average molecular weight of described polylactic acid is 73396, the molecular weight distribution width is 1.24. The spinning temperature is 24°C, the spinning humidity is 40%, the inner diameter of the syringe needle of the PPC solution is 0.60mm, the pushing speed is 0.08mm / min, the voltage is 8kV, and the spinning distance is 10cm; the inner diameter of the syringe needle of the PLA solution is 0.60mm, the pushing speed is 0.04mm / min, the voltage is 10kV, the spinning distance is 10cm; the speed of the receiving roll is 40rpm, the obtained fiber is received by tinfoil paper, and after spinning for 4 hours, place it in a fume hood to remove the solvent 30min, then transfer the sample into a vacuum drying oven, dry at ...

Embodiment 2

[0034] Select dichloromethane as solvent, and the preparation concentration is 10% PPC solution and 5% PLA solution, the number average molecular weight of described polypropylene carbonate is 89000, and the molecular weight distribution width is 1.2; The number average molecular weight of described polylactic acid is 73500, the molecular weight distribution width is 1.3. The spinning temperature is 26°C, the spinning humidity is 40%, the inner diameter of the syringe needle of the PPC solution is 0.51mm, the pushing speed is 0.10mm / min, the voltage is 9kV, and the spinning distance is 13cm; the inner diameter of the syringe needle of the PLA solution is 0.51mm, the pushing speed is 0.06mm / min, the voltage is 10kV, the spinning distance is 12cm; the speed of the receiving roll is 60rpm, the obtained fiber is received by tinfoil paper, and after spinning for 4 hours, place it in a fume hood to remove the solvent 30min, then transfer the sample into a vacuum drying oven, dry at ...

Embodiment 3

[0036] Select dichloromethane as solvent, and the preparation concentration is 10% PPC solution and 8% PLA solution, the number average molecular weight of described polypropylene carbonate is 91000, and the molecular weight distribution width is 1.4; The number average molecular weight of described polylactic acid is 73000, molecular weight distribution width is 1.2. The spinning temperature is 28°C, the spinning humidity is 45%, the inner diameter of the syringe needle of the PPC solution is 0.33mm, the pushing speed is 0.08mm / min, the voltage is 10kV, and the spinning distance is 15cm; the inner diameter of the syringe needle of the PLA solution is 0.51mm, the pushing speed is 0.08mm / min, the voltage is 10kV, the spinning distance is 15cm; the speed of the receiving roll is 80rpm, the obtained fiber is received by tinfoil paper, and after spinning for 4 hours, place it in a fume hood to remove the solvent 30min, then transfer the sample into a vacuum drying oven, dry at roo...

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Abstract

The invention relates to a preparation method of a propylene carbonate / polylactic acid complex fiber film. The method is a conjugate electrostatic spinning method and comprises the following sequential steps that 1, propylene carbonate solutions and polylactic acid solutions of different concentrations are prepared separately; 2, the prepared propylene carbonate solutions and polylactic acid solutions are placed into an injector separately, and then the injector is placed on an electrostatic spinning integrated device; 3, specific parameters of the electrostatic spinning integrated device are set for fiber spinning; 4, drying is performed till the constant weight is reached. The defects that during existing propylene carbonate / polylactic acid complex fiber film preparation, the compatibility is poor, the cost is high, and spinning is not coherent due to solute deposition or excessively large concentration are overcome, and on the basis of the preferential propylene carbonate and polylactic acid mass ratio matched with preferential conjugate electrostatic spinning parameters, the propylene carbonate / polylactic acid complex fiber film with the relatively uniform fiber diameter and multiple evenly-distributed holes is prepared.

Description

technical field [0001] The invention relates to a preparation method of a polypropylene carbonate / polylactic acid composite fiber membrane and the prepared polypropylene carbonate / polylactic acid composite fiber membrane, which are applied in the field of composite material preparation. Background technique [0002] With the development of society, polymer materials appear in all aspects of people's lives with their excellent performance, but traditional synthetic polymer materials not only bring convenience to human life, but also cause resource consumption and ecological crisis. It can produce polymer materials with excellent performance, independent of petrochemical resources, and self-degradable in nature to replace traditional non-degradable petroleum-based polymer materials (Biotechnology Journal, 2010, 5(11): 1117-1117; Science, 2002, 297 (5582):803-807; Macromolecular Symposia, 1998, 135:193-204). Under this background, vigorously developing environment-friendly pol...

Claims

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Application Information

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IPC IPC(8): D04H1/4382D04H1/728D01D5/00D01F6/62D01F6/64
CPCD04H1/4382D01D5/003D01D5/0069D01D5/0092D01F6/625D01F6/64D04H1/728
Inventor 席曼姜旸
Owner JIAXING UNIV
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