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 hydrophilicity and long degradation cycle of PHB fiber, increases the toughness of PHB fiber, and broadens the processing range of PHB

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

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Embodiment 1

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

[0032] The preparation method of this embodiment is:

[0033] Step 1, 2 grams of hydrophilic polymers are dissolved in 200 milliliters of organic solvents, and stirred to completely dissolve the hydrophilic polymers to 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, then add 800 milliliters of trichloroethane, stir to make the PHB dissolve completely, and obtain a spinning solution with a total mass concentration of solute of 0.7%;

[0035] Step 3, the spinning solution described in step 2 is left standing for degassing, and the...

Embodiment 2

[0041] The present embodiment is the same as embodiment 1, wherein the difference is: the hydrophilic polymer is methacrylic acid copolymer, polyacrylic acid, polyethylene glycol, polyoxyethylene, polyvinyl alcohol or polyvinylpyrrolidone; Described organic solvent is ethylene dichloride, chloroform, methylene dichloride or carbon tetrachloride.

Embodiment 3

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

[0044] The preparation method of this embodiment is:

[0045] Step 1, 5 grams of hydrophilic polymers are dissolved in 600 milliliters of organic solvents, and stirred to completely dissolve the hydrophilic polymers to 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 one, then add 400 milliliters of carbon tetrachloride, stir to make PHB and PLLA dissolve completely, and obtain ...

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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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