CN104028237A - Chitosan immobilized beta-cyclodextrin formaldehyde absorbent with fragrance release function - Google Patents
Chitosan immobilized beta-cyclodextrin formaldehyde absorbent with fragrance release function Download PDFInfo
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- CN104028237A CN104028237A CN201410248896.5A CN201410248896A CN104028237A CN 104028237 A CN104028237 A CN 104028237A CN 201410248896 A CN201410248896 A CN 201410248896A CN 104028237 A CN104028237 A CN 104028237A
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- shitosan
- cyclodextrin
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- schardinger dextrin
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Abstract
The invention discloses a chitosan immobilized beta-cyclodextrin formaldehyde absorbent with a fragrance release function. The chitosan immobilized beta-cyclodextrin formaldehyde absorbent is prepared from chitosan immobilized beta-cyclodextrin and perfume; the weight ratio of the chitosan immobilized beta-cyclodextrin to the perfume is (1:0.01)-(1:0.5). The fragrance release type formaldehyde absorbent is prepared by adsorbing the perfume with the fragrance and special functions in advance in the preparation process of the chitosan immobilized beta-cyclodextrin, and double functions of desorbing harmful gas such as formaldehyde and releasing the fragrance are achieved. The chitosan immobilized beta-cyclodextrin formaldehyde absorbent combines the adsorption function and the immobilization dispersion function of chitosan and the inclusion function and the sustained release function of the cyclodextrin, has the characteristics of good formaldehyde absorption performance and long-lasting sustained fragrance release, can greatly reduce the content of the harmful gas such as the formaldehyde in the space, is capable of keeping the air fresh for a long time, and is simple in preparation process, low in cost, free of pollution and applicable to industrial production.
Description
Technical field
The invention belongs to absorption and release fragrant material preparation and application, specifically, relate to a kind of immobilized beta-schardinger dextrin-formaldehyde adsorbent of shitosan with the Xiang Gong released energy.
Background technology
Formaldehyde is a kind of important healthy indoor air pollutants of harm people.Absorption method for the most frequently used and simple method of air methanal removing at present, taking Carbon Materials and goods thereof as main solid absorbent, macromolecular compound is had to stronger suction-operated, and the little Molecular Adsorption effect of PARA FORMALDEHYDE PRILLS(91,95) isopolarity is poor, and easily discharged by secondary in the situation that the saturated and temperature of absorption is higher.Recently, there is patent (application number: 201410012978.X, a kind of formaldehyde adsorbent that contains shitosan and beta-schardinger dextrin-) report the immobilized beta-schardinger dextrin-formaldehyde adsorbent of a kind of shitosan, it not only combines the inclusion function of cyclodextrin and the absorption property of shitosan, due to the immobilized dispersion of shitosan, intensity and the specific area of sorbing material are also improved, and have good formaldehyde adsorption property.
There is special molecular structure and the great amount of hydroxy group of " interior hydrophobic; outer hydrophilic " as the beta-schardinger dextrin-(β-CD) of one of important composition of the immobilized beta-schardinger dextrin-formaldehyde adsorbent of shitosan, can be used as " host " envelope difference " object " compound, form the special inclusion complex of structure.Based on this special construction, β-CD and derivative thereof the aspects such as inclusion slowly-releasing of being everlasting are widely used.If can adsorbing in advance in the preparation process of the immobilized beta-schardinger dextrin-adsorbent of shitosan, we absorb the spices with fragrance and specific function, utilize the inclusion slow releasing function of β-CD, in the application process of the pernicious gases such as absorption formaldehyde, slowly discharge fragrance, prepare the formaldehyde adsorbent of fragrance releasing, realization removes pernicious gas and releases the fragrant pure and fresh dual-use function that purifies air, and this adsorbent will have more wide application prospect so.
Summary of the invention
The object of the present invention is to provide a kind of immobilized beta-schardinger dextrin-formaldehyde adsorbent of shitosan with the Xiang Gong released energy, it combines the inclusion function of cyclodextrin and the absorption property of shitosan, have that absorption formaldehyde performance is good and long-acting slowly releases fragrant feature, can greatly reduce the content of the pernicious gas such as formaldehyde in space, can make the long-term maintenance of air pure and fresh, and absorbent preparation technique is simple, cost is low, pollution-free, be applicable to suitability for industrialized production.
For achieving the above object, the present invention adopts following technical scheme:
The immobilized beta-schardinger dextrin-formaldehyde adsorbent of a kind of shitosan, is made up of the immobilized beta-schardinger dextrin-of shitosan and spices; The weight ratio of shitosan, beta-schardinger dextrin-and spices is 1: 0.01 ~ 1: 0.5.
The preparation method of the immobilized beta-schardinger dextrin-formaldehyde adsorbent of above-mentioned shitosan, comprises the steps:
Step 1, prepare the immobilized beta-schardinger dextrin-particle of shitosan taking shitosan and beta-schardinger dextrin-as raw material, glutaraldehyde as cross linker;
Step 2, stir or ultrasound condition under, liquid perfume dipping is absorbed on the immobilized beta-schardinger dextrin-of shitosan, obtain the immobilized beta-schardinger dextrin-formaldehyde adsorbent of fragrance releasing shitosan.
In above-mentioned preparation method, the dip time under stirring or ultrasound condition is 1 ~ 12 hour, and dipping temperature is 10 ~ 60 DEG C.
In above-mentioned preparation method, described spices is one or more mixtures in bergamot oil, attar of rose, geranium oil, neroli oil.
The immobilized beta-schardinger dextrin-of described shitosan, its preparation method is prior art, those skilled in the art can make according to disclosed various preparation methods in prior art, and illustrative methods includes but not limited to the middle methods of recording such as patent 201410012978.X.
Compared with prior art, the present invention has following beneficial effect:
The present invention is taking cheap shitosan and beta-schardinger dextrin-as raw material, and the prior absorption of carrying out spices by simple impregnation method absorbs, and is prepared into fragrance releasing formaldehyde adsorbent, reaction condition gentleness, and production technology is simple, is particularly suitable for suitability for industrialized production.
The fragrance releasing formaldehyde adsorbent that uses said method to prepare, spices is distributed in the cavity of surface, space and cyclodextrin of the immobilized beta-schardinger dextrin-material of main part of shitosan.In adsorbent use procedure, the release of fragrance can be divided into three phases, first be the release that is adsorbed on absorbent particles surface spices, next is the release that is adsorbed on the spices of adsorbent duct inner surface, be finally the release of the spices of inclusion in beta-schardinger dextrin-cavity, thereby there is the performance of long-acting incense-releasing.
The fragrance releasing formaldehyde adsorbent that uses said method to prepare, combines the inclusion function of cyclodextrin and the absorption property of shitosan and immobilized peptizaiton, has the features such as formaldehyde adsorption property is good, stability is high, can be recycled.
Use the formaldehyde adsorbent prepared of said method easy to use: this fragrance releasing formaldehyde adsorbent is trace toxic, the absorption of corrosive gas and the pure and fresh purified treatment of air such as indoor or automobile inner air formaldehyde for office, bedroom, parlor, hotel etc.
Detailed description of the invention
In order to make object of the present invention, technical scheme and advantage clearer, below in conjunction with embodiment, the present invention is further elaborated, but is not intended to limit the present invention.
Embodiment 1:
The immobilized beta-schardinger dextrin-formaldehyde adsorbent of shitosan with the Xiang Gong released energy, is made up of shitosan, cyclodextrin and spices, and its preparation process comprises the following steps:
Step 1, prepare the immobilized beta-schardinger dextrin-particle of shitosan taking shitosan and beta-schardinger dextrin-as raw material, glutaraldehyde as cross linker.
(1) 4 g shitosans being dissolved in to 200 mL concentration is in the hydrochloric acid of 0.1 mol/L, and the cyclodextrin solution that adds 200 mL to contain 24 g beta-schardinger dextrin-s, at 25 DEG C, be uniformly mixed after liquid 1 h, drip the glutaraldehyde solution of 24 mL concentration as 25% taking the speed of 0.8mL/min;
(2) by mixed liquor obtained above at nitrogen protection and 70 DEG C, stop reaction after stirring 6 h;
(3) sodium hydroxide solution that is 1 mol/L by 70 mL concentration joins in the mixed liquor obtaining in (2) product is separated out, filter, wash with water to after neutrality with acetone washing, finally at 60 DEG C, vacuum drying is stable to product quality, obtains the immobilized beta-schardinger dextrin-particle of shitosan.
Step 2, the ratio that is 1: 0.1 in the immobilized beta-schardinger dextrin-of shitosan and spices weight ratio, under stirring condition, absorb bergamot oil dipping on the immobilized beta-schardinger dextrin-of shitosan,
Stirring dip time is 6 hours, and dipping temperature is 25 DEG C, obtains the immobilized beta-schardinger dextrin-formaldehyde adsorbent of fragrance releasing shitosan.
Embodiment 2:
The immobilized beta-schardinger dextrin-formaldehyde adsorbent of shitosan with the Xiang Gong released energy, is made up of shitosan, cyclodextrin and spices, and its preparation process comprises the following steps:
Step 1, prepare the immobilized beta-schardinger dextrin-particle of shitosan by the method for embodiment 1.
Step 2, the ratio that is 1: 0.35 in the immobilized beta-schardinger dextrin-of shitosan and spices weight ratio, under ultrasound condition, bergamot oil and the attar of rose impregnation mixture that 3:1 is mixed to get are by weight absorbed on the immobilized beta-schardinger dextrin-of shitosan, the ultrasonic immersing time is 8 hours, dipping temperature is 25 DEG C, obtains the immobilized beta-schardinger dextrin-formaldehyde adsorbent of fragrance releasing shitosan.
Embodiment 3:
Have the Xiang Gong released can the immobilized beta-schardinger dextrin-formaldehyde adsorbent of shitosan release perfume (or spice) and formaldehyde adsorption property:
By dynamic experiment method, investigate the absorption property of adsorbent PARA FORMALDEHYDE PRILLS(91,95).At ambient temperature, get respectively 0.5 g and put into by embodiment 1 and 2 made fragrance releasing adsorbents the adsorption column that internal diameter is 7 mm, using air as carrier gas, by Bubbling method to the adsorbent bed formaldehyde that passes into.Be 1000 h in air speed
-1, the concentration of formaldehyde in bed inlet air is ~ 68 mg/m
3condition under test.Test result shows, the absorption property such as formaldehyde equilibrium adsorption capacity and the rate of adsorption of the immobilized beta-schardinger dextrin-adsorbent of shitosan of fragrance releasing prepared by the present invention, formaldehyde adsorption property compared with the immobilized beta-schardinger dextrin-formaldehyde adsorbent of the shitosan under equal conditions is suitable, after absorption test in ~ 300 hours, people can detect release composition and the fragrance of spices, illustrates that a kind of immobilized beta-schardinger dextrin-formaldehyde adsorbent of shitosan with the Xiang Gong released energy of the present invention has pernicious gases such as removing formaldehyde and releases the fragrant pure and fresh dual-use function purifying air.
Claims (4)
1. the immobilized beta-schardinger dextrin-formaldehyde adsorbent of shitosan, is characterized in that, is made up of the immobilized beta-schardinger dextrin-of shitosan and spices; The weight ratio of shitosan, beta-schardinger dextrin-and spices is 1: 0.01 ~ 1: 0.5.
2. the preparation method of the immobilized beta-schardinger dextrin-formaldehyde adsorbent of shitosan described in claim 1, is characterized in that comprising the steps:
Step 1, prepare the immobilized beta-schardinger dextrin-particle of shitosan taking shitosan and beta-schardinger dextrin-as raw material, glutaraldehyde as cross linker;
Step 2, stir or ultrasound condition under, liquid perfume dipping is absorbed on the immobilized beta-schardinger dextrin-of shitosan, obtain the immobilized beta-schardinger dextrin-formaldehyde adsorbent of fragrance releasing shitosan.
3. preparation method according to claim 2, is characterized in that, the dip time under stirring or ultrasound condition is 1 ~ 12 hour, and dipping temperature is 10 ~ 60 DEG C.
4. preparation method according to claim 2, is characterized in that, described spices is one or more mixtures in bergamot oil, attar of rose, geranium oil, neroli oil.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410248896.5A CN104028237A (en) | 2014-06-07 | 2014-06-07 | Chitosan immobilized beta-cyclodextrin formaldehyde absorbent with fragrance release function |
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| CN201410248896.5A CN104028237A (en) | 2014-06-07 | 2014-06-07 | Chitosan immobilized beta-cyclodextrin formaldehyde absorbent with fragrance release function |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104324561A (en) * | 2014-10-21 | 2015-02-04 | 中山大学惠州研究院 | Vehicle-mounted formaldehyde purifier |
| CN107115849A (en) * | 2017-05-12 | 2017-09-01 | 天津工业大学 | A kind of beta cyclodextrin modified starch materials for dye wastewater treatment |
| CN107217483A (en) * | 2017-06-09 | 2017-09-29 | 安徽启威生物科技有限公司 | A kind of fiber VOC scavenger and removal methods |
| CN108925561A (en) * | 2018-08-08 | 2018-12-04 | 邯郸学院 | A kind of antibacterial sustained release agent and preparation method thereof |
| CN108939143A (en) * | 2018-07-06 | 2018-12-07 | 苏州盖德精细材料有限公司 | A kind of preparation method of polyethylene glycol medical university areas of skin dressing |
| CN111171370A (en) * | 2019-12-04 | 2020-05-19 | 华南理工大学 | Polymer for rapidly adsorbing low-concentration formaldehyde and preparation method thereof |
Citations (1)
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| CN103691411A (en) * | 2014-01-13 | 2014-04-02 | 广州市绿乔生物科技有限公司 | Formaldehyde adsorbent containing chitosan and beta-cyclodextrin and preparation method for formaldehyde adsorbent |
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Patent Citations (1)
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| CN103691411A (en) * | 2014-01-13 | 2014-04-02 | 广州市绿乔生物科技有限公司 | Formaldehyde adsorbent containing chitosan and beta-cyclodextrin and preparation method for formaldehyde adsorbent |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104324561A (en) * | 2014-10-21 | 2015-02-04 | 中山大学惠州研究院 | Vehicle-mounted formaldehyde purifier |
| CN104324561B (en) * | 2014-10-21 | 2016-06-15 | 中山大学惠州研究院 | A kind of Vehicular formaldehyde depurator |
| CN107115849A (en) * | 2017-05-12 | 2017-09-01 | 天津工业大学 | A kind of beta cyclodextrin modified starch materials for dye wastewater treatment |
| CN107217483A (en) * | 2017-06-09 | 2017-09-29 | 安徽启威生物科技有限公司 | A kind of fiber VOC scavenger and removal methods |
| CN108939143A (en) * | 2018-07-06 | 2018-12-07 | 苏州盖德精细材料有限公司 | A kind of preparation method of polyethylene glycol medical university areas of skin dressing |
| CN108925561A (en) * | 2018-08-08 | 2018-12-04 | 邯郸学院 | A kind of antibacterial sustained release agent and preparation method thereof |
| CN108925561B (en) * | 2018-08-08 | 2020-07-21 | 邯郸学院 | Antibacterial sustained-release agent and preparation method thereof |
| CN111171370A (en) * | 2019-12-04 | 2020-05-19 | 华南理工大学 | Polymer for rapidly adsorbing low-concentration formaldehyde and preparation method thereof |
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Application publication date: 20140910 |