A kind of bisquaternary phosphonium salt of picric acid, sustained-release film material and its preparation method and application
A technology of quaternary phosphonium salt and picric acid is applied in the field of picric acid diquaternary phosphonium salt, slow-release film material and preparation thereof, and can solve the problems of short duration of inhibition, difficulty in popularization and use, poor heat resistance of quaternary phosphonium salt, etc. , to achieve the effect of favorable industrialization promotion, good thermal stability and less solvent consumption
Active Publication Date: 2022-03-22
SOUTH CHINA AGRI UNIV +1
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Problems solved by technology
However, quaternary phosphonium salts have poor heat resistance and short duration of inhibition, so it is difficult to be effectively popularized and used.
Method used
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preparation example Construction
[0026] A kind of preparation method of picric acid double quaternary phosphonium salt fiber film material, comprises the following steps:
[0027] (1) [TPPBzTPP]Br 2 Preparation: Weigh 3mmol of 1,4-bis(bromomethyl)benzene and 4mmol of triphenylphosphine into a 100mL ground-mouth conical flask, add 30mL of acetone to dissolve, stir and reflux at 65-70°C for 20 hours, white Precipitation was formed, filtered under reduced pressure, washed 3 times with a small amount of acetone, and dried in vacuo to obtain a white solid powder which was the target product bis-quaternary phosphonium salt.
[0028] (2) [TPPBzTPP][PIC] 2 Synthetic steps: take 1mmol of bisquaternary phosphonium salt and 2mmol of silver picrate and dissolve them in methanol and water respectively, and slowly add the solution of silver picrate to the solution of bisquaternary phosphonium salt under stirring conditions, and a light yellow precipitate is formed , filtered under reduced pressure to take the filtrate, l...
Embodiment 1
[0033] The antibacterial effect of table 2 embodiment 1 picric acid bisquaternary phosphonium salt material
[0034] .
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Abstract
The invention belongs to the technical field of nanofiber films, and in particular relates to a bisquaternary phosphonium picric acid salt, a slow-release film material and a preparation method thereof. The bisquaternary phosphonium salt of picric acid is a compound quaternary phosphonium salt with picric acid as an anion and bisquaternary phosphonium salt as a cation, and is in a single crystal form, monoclinic crystal system, P 2(1) / c space group. The bisquaternary phosphonium salt of picric acid is used to prepare fiber film materials: a certain amount of polyacrylonitrile is added to a mixed solvent of DMSO and DMF, and dissolved at 70-90°C to obtain a spinning solution with a concentration of 12-18wt% Add a certain amount of bis-quaternary phosphonium salt of picric acid described in any one of claim 1-2 in the gained spinning solution, make the concentration of bis-quaternary phosphonium salt of picric acid reach 6-10wt%, dissolve at 55-65°C, Spinning is carried out after static defoaming to obtain picric acid bisquaternary phosphonium salt fiber film material. The bisquaternary phosphonium picric acid salt of the invention has good thermal stability, exhibits good antibacterial activity against Escherichia coli and Staphylococcus aureus, is an excellent antibacterial material, and has a long sustained release time after being spun into a film.
Description
technical field [0001] The invention belongs to the technical field of nanofiber films, and in particular relates to a bisquaternary phosphonium picric acid salt, a slow-release film material, a preparation method thereof and an antibacterial application. Background technique [0002] Bacteria are ubiquitous and can attach to the surface of fruits and vegetables, directly or indirectly affecting human health. At present, antibacterial methods for fruits and vegetables include antibacterial coating packaging, antibacterial film packaging, antibacterial pad / bag packaging, and the preparation of antibacterial packaging combined with electrospinning technology is one of the future development trends. At the same time, a green, environmentally friendly , Easily degradable, non-toxic or low-toxic antibacterial packaging is in line with the development trend of the times. [0003] Quaternary phosphonium salts have the advantages of fast antibacterial action and antibacterial spect...
Claims
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IPC IPC(8): C07F9/54C07C205/24C07C201/12D04H1/728D04H1/43A01N57/22A01N25/22A01P1/00
CPCC07F9/5456C07C205/24C07C201/12D04H1/728D04H1/43A01N57/22A01N25/22C07B2200/13
Inventor 倪春林高珊珊李嘉浚王晓斌徐奕琳刘珊珊郑燕珠简海华林键健
Owner SOUTH CHINA AGRI UNIV