Hydrophilic poly-beta-hydroxybutyrate (PHB) fiber and preparation method thereof

A technology of hydrophilic and hydrophilic polymers, applied in the direction of conjugated synthetic polymer artificial filaments, etc., can solve the problems of poor hydrophilicity and long degradation cycle of PHB fibers, and achieve improved hydrophilicity and degradation rate, The preparation process is simple and the interface effect is improved

Inactive Publication Date: 2012-07-11
杨青芳
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The fiber is blended and spun with PHB and hydrophilic polymer, which overcomes the brittleness of PHB, improves the problems of poor

Method used

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  • Hydrophilic poly-beta-hydroxybutyrate (PHB) fiber and preparation method thereof
  • Hydrophilic poly-beta-hydroxybutyrate (PHB) fiber and preparation method thereof
  • Hydrophilic poly-beta-hydroxybutyrate (PHB) fiber and preparation method thereof

Examples

Experimental program
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Example Embodiment

[0030] Example 1

[0031] The hydrophilic PHB fiber of this embodiment is made by mixing and spinning raw materials with the following mass percentages: 20% hydrophilic polymer and 80% PHB; the hydrophilic polymer is polyacrylamide; The viscosity average molecular weight of PHB is 1.5×10 5 , The quality purity is more than 99%.

[0032] The preparation method of this embodiment is:

[0033] Step 1. Dissolve 2 g of hydrophilic polymer in 200 ml of organic solvent, stir to completely dissolve the hydrophilic polymer, and obtain a transparent solution with a hydrophilic polymer concentration of 10 g / L; the organic solvent is Trichloroethane;

[0034] Step 2: Add 8 grams of PHB to the solution described in Step 1, and then add 800 ml of trichloroethane, stir to completely dissolve the PHB, and obtain a spinning solution with a total solute concentration of 0.7%;

[0035] Step 3. The spinning solution described in step 2 is allowed to stand for deaeration and then sent to a spinneret to fo...

Example Embodiment

[0040] Example 2

[0041] This embodiment is the same as embodiment 1, except that: the hydrophilic polymer is methacrylic acid copolymer, polyacrylic acid, polyethylene glycol, polyoxyethylene, polyvinyl alcohol or polyvinylpyrrolidone; The organic solvent is dichloroethane, chloroform, dichloromethane or carbon tetrachloride.

Example Embodiment

[0042] Example 3

[0043] The hydrophilic PHB fiber of this embodiment is made by mixing and spinning raw materials with the following mass percentages: 14.3% hydrophilic polymer, 28.6% PLLA and 57.1% PHB; the hydrophilic polymer is poly Ethylene glycol; the viscosity average molecular weight of the PLLA is 0.5×10 5 , The mass purity is above 99%; the viscosity average molecular weight of the PHB is 6.5×10 5 , The quality purity is more than 99%.

[0044] The preparation method of this embodiment is:

[0045] Step 1. Dissolve 5 g of hydrophilic polymer in 600 ml of organic solvent, stir to completely dissolve the hydrophilic polymer, and obtain a transparent solution with a hydrophilic polymer concentration of 8.3 g / L; the organic solvent Is carbon tetrachloride;

[0046] Step 2: Add 20 grams of PHB and 10 grams of PLLA to the solution described in Step 1, and then add 400 ml of carbon tetrachloride, stir to completely dissolve PHB and PLLA, and obtain a spinning solution with a tota...

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Abstract

The invention discloses a hydrophilic poly-beta-hydroxybutyrate (PHB) fiber, which is prepared by blending and spinning the following raw materials in percentage by mass: 10 to 20 percent of hydrophilic polymer, 0 to 45 percent of polylactic acid (PLLA) and 40 to 80 percent of PHB, wherein the hydrophilic polymer is methacrylic acid copolymer, polyacrylic acid, polyacrylamide, polyethylene glycol, polyoxyethylene, polyvinyl alcohol or polyvinyl pyrrolidone. In addition, the invention also discloses a preparation method for the hydrophilic PHB fiber. By blending and spinning the PHB and the hydrophilic polymer, the brittleness of the PHB is overcome, the problems of poor hydrophilic property and long degrading period of the PHB fiber are solved, the toughness of the PHB fiber is improved, and the processing range of the PHB is widened. The preparation method is easy and convenient, the process conditions are simple and easy to control, and the tensile strength of the prepared hydrophilic PHB fiber at break can reach over 6.1cN/dtex.

Description

technical field [0001] The invention belongs to the technical field of fiber preparation, and in particular relates to a hydrophilic PHB fiber and a preparation method thereof. Background technique [0002] PHB (poly-β-hydroxybutyrate) is the most typical type of PHA (polyhydroxyalkanoate). PHA is a series of natural polymers that widely exist in many microbial cells. There are various types and various properties. Iso, its structural formula is, where R is an n-alkyl side chain ranging from methyl to nonyl. Among them, PHB is the earliest and most thorough research among PHAs. [0003] PHB is a high molecular polymer stored in the cells of microorganisms under unbalanced growth conditions, and widely exists in many prokaryotes in nature. In the above formula, R is CH 3 It means PHB. As early as 1925, PHB was first isolated from microorganisms. PHB not only has similar properties to chemically synthesized plastics, but also has properties that synthetic plastics do not ...

Claims

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Application Information

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IPC IPC(8): D01F8/14D01F8/10D01F8/16
Inventor 杨青芳艾玉峰董兆麟
Owner 杨青芳
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