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CN-122013525-A - Fabric fragrance-retaining material containing plant extracts and preparation method thereof

CN122013525ACN 122013525 ACN122013525 ACN 122013525ACN-122013525-A

Abstract

The invention relates to a fabric fragrance-retaining material containing plant extracts and a preparation method thereof, and aims to solve the problems of quick fragrance water washing loss and poor long-acting property in the traditional fabric fragrance-retaining technology. The material uses plant extracts as core materials to prepare hydrophilic and hydrophobic biphase microspheres, the shell is water-temperature double-response polyvinylpyrrolidone-N-isopropyl acrylamide copolymer, and the water washing fragrance locking and dry temperature sensitive fragrance releasing are realized by controlling the swelling and shrinkage of hydrophilic/hydrophobic sections. The microsphere is stably combined with the fiber through the modified guar gum targeted adsorption layer without interfering with response, the fragrance retention rate is 80-90% after 40 times of water washing, the fragrance retention time is 60-90 days at normal temperature, and the fabric keeps the original hand feeling and air permeability.

Inventors

  • QIU ZEFENG
  • WAN YULIN
  • XIANG RUIYU

Assignees

  • 湖北三锋生物科技有限公司

Dates

Publication Date
20260512
Application Date
20260225

Claims (9)

  1. 1. A fabric fragrance-retaining material containing plant extracts, which is characterized by comprising hydrophilic and hydrophobic biphase microspheres and a fabric substrate, and is prepared from the following raw materials in parts by weight: The hydrophilic and hydrophobic biphasic microsphere comprises 30-50 parts of plant extract, 14-28 parts of polyvinylpyrrolidone, 6-12 parts of N-isopropyl acrylamide, 0.5-2 parts of initiator, 1-3 parts of emulsifier, 50-80 parts of hydrophobic dispersion medium and 100-200 parts of deionized water, wherein the hydrophilic and hydrophobic biphasic microsphere takes the plant extract as a core material, and the shell is a water-temperature double-response polyvinylpyrrolidone-N-isopropyl acrylamide copolymer; The fiber surface of the fabric substrate is provided with a modified guar gum targeted adsorption layer, the hydrophilic and hydrophobic biphase microsphere is stably combined with the fabric fiber through the targeted adsorption layer, and the dual-response copolymer realizes water washing fragrance locking and dry temperature sensitive fragrance releasing through swelling and shrinkage of a hydrophilic/hydrophobic section.
  2. 2. The fabric fragrance-retaining material containing plant extracts according to claim 1, wherein the mass ratio of polyvinylpyrrolidone to N-isopropylacrylamide in the polyvinylpyrrolidone-N-isopropylacrylamide copolymer is 7:3-6:4, and the volume phase transition temperature of the copolymer is 28 ℃ to 30 ℃.
  3. 3. The fabric fragrance-retaining material containing plant extracts according to claim 1, wherein the particle size of the hydrophilic and hydrophobic biphasic microspheres is 3-8 μm, the mass ratio of the core wall is 3:1-5:1, and the mass ratio of the plant extracts in the core material is 60% -80%.
  4. 4. The fabric fragrance-retaining material containing the plant extract according to claim 1, wherein the plant extract is selected from one or more of rose essential oil, lavender essential oil, tea tree essential oil, citrus essential oil and jasmine essential oil, the initiator is one or more of ammonium persulfate, potassium persulfate and azobisisobutyronitrile, the emulsifier is tween-80, span-60 or a compound emulsifier thereof, and the hydrophobic dispersion medium is polysiloxane or liquid paraffin.
  5. 5. The fabric fragrance-retaining material containing plant extracts according to claim 1, wherein the thickness of the modified guar gum targeting adsorption layer is 50-100nm, and the modified guar gum is prepared by cation modified guar gum, and the loading amount of the modified guar gum on the surface of the fabric fiber is 0.5-2.0% o.w.f.
  6. 6. The plant extract-containing fabric fragrance-retaining material according to claim 1, wherein the fragrance-retaining material has a fragrance-retaining rate of 80% -90% after 40 standard water washes, a fragrance-retaining period of 60-90 days at normal temperature, and a fragrance release rate of 30% or more in a dry state of 30% -50% or less than 25 ℃.
  7. 7. A method for preparing a fabric fragrance-retaining material containing a plant extract, which is characterized in that the method is used for preparing the fabric fragrance-retaining material containing the plant extract according to any one of claims 1 to 6, and the specific preparation method is as follows: S1, weighing plant extracts, polyvinylpyrrolidone, N-isopropyl acrylamide, an initiator, an emulsifier, a hydrophobic dispersion medium and deionized water according to parts by weight, adding polyvinylpyrrolidone and N-isopropyl acrylamide monomers into deionized water, stirring and dissolving, adjusting the pH value of a system to 5.5-6.5, heating to 50-55 ℃ and preserving heat for 10-15min to obtain shell material prepolymer liquid, adding the initiator into the shell material prepolymer liquid, stirring and dispersing for 5-10min, slowly dropwise adding a mixed liquid of the plant extracts and the hydrophobic dispersion medium at a rate of 0.5-1.0mL/min, adjusting the stirring rate to 300-500rpm to form stable emulsion, heating to 60-65 ℃ and preserving heat for polymerization for 3-4h, cooling to room temperature after the reaction is finished, centrifuging and washing, and carrying out vacuum drying for 2-3h at 50-60 ℃ to obtain hydrophilic double-phase hydrophobic microspheres with particle diameters of 3-8 mu m; s2, dissolving the modified guar gum in deionized water, stirring and dissolving, adding 0.1-0.3% of preservative, preparing an adsorption layer treatment solution with the mass concentration of 1-3% and the pH value of 6.0-7.0, immersing the fabric substrate in the treatment solution at the temperature of 40-50 ℃ after degreasing and bleaching pretreatment, immersing for 20-30min at the bath ratio of 1:20-1:30, and carrying out twice immersion and twice rolling, and drying for 15-20min at the temperature of 80-90 ℃ to obtain the fabric with the modified guar gum targeted adsorption layer on the surface; S3, adding deionized water into the biphase microspheres, performing ultrasonic dispersion for 10-15min at 300-500W to prepare microsphere finishing liquid with the mass concentration of 5% -10%, adding 0.2% -0.5% of dispersing agent to adjust stability, immersing the fabric treated in the step S2 into the finishing liquid, immersing for 30-40min at 45-55 ℃, adopting a gradient drying process after two-immersion and two-rolling, drying for 10-15min at 60 ℃, drying for 10-15min at 80 ℃, drying for 5-10min at 100 ℃, and naturally cooling to obtain the fabric fragrance-retaining material.
  8. 8. The preparation method of the fabric fragrance-retaining material containing the plant extracts, which is characterized in that in the step S1, when the initiator is ammonium persulfate or potassium persulfate, nitrogen is required to be introduced into a reaction system for protection, the nitrogen flow is 0.5-1.0L/min, and when the emulsifier is a compound of Tween-80 and span-60, the mass ratio of the Tween-80 to span-60 is 1:1-2:1.
  9. 9. The use of a fabric fragrance-retaining material containing a plant extract according to any one of claims 1 to 6, characterized in that said material is suitable for cotton, hemp, chemical fibre and blend fabrics, applicable for high frequency washing fabrics of the underwear, children's wear, home textiles and towels type.

Description

Fabric fragrance-retaining material containing plant extracts and preparation method thereof Technical Field The invention belongs to the technical field of textile functional materials, and particularly relates to a fabric fragrance-retaining material containing plant extracts and a preparation method thereof. Background The invention relates to the technical field of textile functional materials, in particular to a fabric fragrance-retaining material containing plant extracts, and a preparation method and application thereof. With the upgrading of consumption, the functional demands of consumers on fabrics are increasingly improved, and the fragrance-retaining fabrics can bring continuous fragrance experience, so that the fragrance-retaining fabrics are widely applied to underwear, children's wear, home textiles and other products. The traditional fabric fragrance retaining technology has the remarkable defects that the traditional fragrance retaining material adopts a single coating structure, only simple fragrance bearing can be realized, the environment responsiveness is lacked, the fragrance is easy to quickly lose in the water washing process, the fragrance retaining rate is generally lower than 70% after 40 times of water washing, the long-acting performance is poor, the problem of water washing loss is not solved although part of temperature responsive fragrance retaining material can realize temperature responsive fragrance release, the response temperature is not matched with the wearing scene of a human body, the fragrance releasing effect is unstable, meanwhile, part of material is the fragrance retaining effect pursued, the thickness of the coating layer is excessively increased or a chemical adhesive is added, the hand feeling of the fabric is stiff, the air permeability is reduced, and the wearing experience is influenced. In addition, the existing preparation process of the material often has the problems of unreasonable raw material proportion, unstable combination of microspheres and fabrics and the like, and further limits the industrialized application of the material. Therefore, developing a fabric fragrance-retaining material which has the characteristics of water washing fragrance-locking, wen Minshi fragrance-releasing and long-acting fragrance-retaining, and does not influence the original hand feeling and air permeability of the fabric becomes an urgent need in the field of current textile functional materials. Disclosure of Invention Aiming at the problems, the invention provides a fabric fragrance-retaining material containing plant extracts, a preparation method and application thereof, wherein the material is used for constructing a water-temperature double-response hydrophilic and hydrophobic biphase microsphere and modified guar gum targeting adsorption layer composite system, realizing fragrance locking by washing and fragrance releasing by dry Wen Minshi, having the characteristics of long-acting fragrance retaining and temperature adaptive fragrance releasing by high-frequency washing, not changing the original hand feeling and air permeability of the fabric, adapting the preparation technology to the existing textile production line, and meeting the application requirements of high-frequency washing fabric products such as underwear, children's wear, home textile and the like. In order to achieve the above purpose, the present invention adopts the following technical scheme: the fabric fragrance-retaining material containing the plant extract comprises hydrophilic and hydrophobic biphase microspheres and a fabric substrate, and is prepared from the following raw materials in parts by weight: The hydrophilic and hydrophobic biphasic microsphere comprises 30-50 parts of plant extract, 14-28 parts of polyvinylpyrrolidone, 6-12 parts of N-isopropyl acrylamide, 0.5-2 parts of initiator, 1-3 parts of emulsifier, 50-80 parts of hydrophobic dispersion medium and 100-200 parts of deionized water, wherein the hydrophilic and hydrophobic biphasic microsphere takes the plant extract as a core material, and the shell is a water-temperature double-response polyvinylpyrrolidone-N-isopropyl acrylamide copolymer; The fiber surface of the fabric substrate is provided with a modified guar gum targeted adsorption layer, the hydrophilic and hydrophobic biphase microsphere is stably combined with the fabric fiber through the targeted adsorption layer, and the dual-response copolymer realizes water washing fragrance locking and dry temperature sensitive fragrance releasing through swelling and shrinkage of a hydrophilic/hydrophobic section. Optionally, in the polyvinylpyrrolidone-N-isopropyl acrylamide copolymer, the mass ratio of polyvinylpyrrolidone to N-isopropyl acrylamide is 7:3-6:4, and the volume phase transition temperature of the copolymer is 28-30 ℃. Optionally, the particle size of the hydrophilic and hydrophobic biphasic microsphere is 3-8 μm, the mass ratio of the core wall is 3:1