A kind of fragrance-carrying electrospun membrane and preparation method thereof

An electrospun membrane and fragrance-carrying technology, applied in textiles and papermaking, cellulose/protein conjugated artificial filaments, filament/thread forming, etc., can solve the problems of easy detachment of microcapsules, short fragrance retention time and high cost , to achieve the effect of improving the fragrance loading efficiency, improving the barrier effect, and improving the loading efficiency

Active Publication Date: 2019-05-24
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the resulting fragranced products often have outstanding problems such as easy shedding of microcapsules, poor fragrance quality, and short fragrance retention time (usually the fragrance persistence is less than 30 days).
Compared with the method of directly attaching fragrances to fabrics, the encapsulation preparation process is more complicated and the cost is higher. Although it can slow down the speed of fragrance release, the overall advantages are not obvious enough

Method used

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  • A kind of fragrance-carrying electrospun membrane and preparation method thereof
  • A kind of fragrance-carrying electrospun membrane and preparation method thereof
  • A kind of fragrance-carrying electrospun membrane and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Weigh a certain amount of anhydrous sodium carbonate (if the concentration of sodium carbonate is 0, do not add), add 1L of deionized water, stir to dissolve, heat to boiling, add weighed 10g silkworm cocoons (produced in Tongxiang, Zhejiang), and boil for 30min. After cooling, filter with suction and wash the silk with a large amount of water; repeat the above operation twice, put the silkworm cocoons after the third suction filter into a vacuum oven to dry, weigh and calculate the reduction rate.

[0034] Respectively with 0% (ie pure water), 0.05%, 0.1%, 0.2% and 0.5% Na 2 CO 3 The solution degummed silkworm cocoons, in which 0% was degummed for 2 hours each time, repeated three times, and other concentrations were degummed for 1 hour. See figure 1 , the infrared spectrum of the product see figure 2 a, Partial zoom-in of the infrared spectrum is shown in figure 2 b.

[0035] Depend on figure 1 The results show that the addition of sodium carbonate can signifi...

Embodiment 2

[0038] The operating conditions are substantially the same as in Example 1, except that the concentration and the number of times of degumming are changed. The specific conditions are: a) 0.1% Na 2 CO 3 solution, degummed three times, each 0.5h; b) 0.2% Na 2 CO 3 solution, degummed three times, each 0.5h; c) 0.2% Na 2 CO 3 Solution, degummed twice, each 0.5h, measure its infrared spectrum, the result sees image 3 a and image 3 b, where image 3 b for image 3 a at 700-640cm -1 The partially enlarged spectrum at .

[0039] Depend on image 3 (a) and image 3 The results of (b) show that the measured infrared spectrum shows that with 0.1% Na 2 CO 3 The silk obtained by solution degumming is at 669cm -1 There is still the characteristic absorption peak of the amide V band at the place, indicating that there is still sericin residue; 0.2% Na 2 CO 3 The silk obtained by degumming the solution for three times is at 669cm -1 There is no absorption peak, and the ser...

Embodiment 3

[0041] The refined silk fibroin completely degummed in Example 2 was dissolved, dialyzed, and freeze-dried to prepare regenerated silk fibroin. Weigh 5g of dry refined silk fibroin, add 50mL 9.3mol / L LiBr aqueous solution, dissolve at 60°C for 4h, cool to room temperature and filter with sand core. The filtrate was transferred to a regenerated cellulose dialysis bag (MWCO=1000), placed in 1000 mL deionized water for dialysis for 3 days, and the water was changed every 3 h. After the dialysis is completed, suction filter with a sand core, transfer the filtrate to a polystyrene Petri dish (surface treatment), and freeze-dry. Store in a desiccator.

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Abstract

The invention discloses a scented electrospinning film and a preparation method thereof. The method comprises the following steps: (1) adopting a Na2CO3 water solution to degum raw silk, then dissolving, and carrying out dialysis and freeze-drying treatment to obtain regenerated silk protein; (2) taking a formic acid solution of spice-poly(2-ethyl-2-oxazoline) as a core layer spinning solution and taking a formic acid solution of the regenerated silk protein as a shell layer spinning solution for carrying out coaxial electrospinning so as to obtain electrospun fibers; (3) adopting methanol to carry out aftertreatment on the electrospun fibers obtained in the step (2) so as to obtain the scented electrospinning film. The scented electrospinning film prepared by the method has higher spice loading capacity and a better slow release property.

Description

technical field [0001] The invention belongs to the field of fragrance loading and sustained release, and in particular relates to a fragrance-loaded electrospun membrane and a preparation method thereof. Background technique [0002] Spices and essences are widely used in various products such as food, leather, textiles, papermaking, washing products, etc., and are closely related to the national economy and people's daily life. Fragrance molecules are mostly volatile organic compounds, and the scent of flowers in nature and artificially scented products usually have a relatively short fragrance retention time. Research on fragrance loading and sustained release technology, prolonging the release time of fragrances, and developing fragranced products with long-lasting fragrances are of great significance for promoting the upgrading of traditional light industrial products, increasing added value and improving consumers' quality of life. [0003] Scholars at home and abroad...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F8/16D01F8/02D01F11/02D01F11/08D01D5/34
CPCD01D5/34D01F8/02D01F8/16D01F11/02D01F11/08
Inventor 叶龙刘雨溪周乐江黎明
Owner ZHEJIANG UNIV
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