CN103316641B - Nanofiber suspension for chitin or deacetylated derivatives thereof, as well as preparation method and application of nanofiber suspension - Google Patents
Nanofiber suspension for chitin or deacetylated derivatives thereof, as well as preparation method and application of nanofiber suspension Download PDFInfo
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- CN103316641B CN103316641B CN201310276761.5A CN201310276761A CN103316641B CN 103316641 B CN103316641 B CN 103316641B CN 201310276761 A CN201310276761 A CN 201310276761A CN 103316641 B CN103316641 B CN 103316641B
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Abstract
The invention discloses nanofiber suspension for chitin or deacetylated derivatives thereof, as well as a preparation method and an application of the nanofiber suspension. The nanofiber suspension is prepared by taking the chitin or the deacetylated derivatives of the chitin as raw materials, and is prepared by the steps of raw material soaking, mechanical crushing and homogenizing sequentially. Nanofiber for the chitin or the deacetylated derivatives of the chitin is reproducible, rich in source, low in preparation cost, low in price, non-toxic and readily biodegradable, does not cause secondary pollution and has high capacity on adsorbing heavy metal ions compared with the traditional adsorption material.
Description
Technical field
The present invention relates to nanofiber suspension of a kind of chitin or its de-acetyl derivative and preparation method thereof and application.
Background technology
Chitin is present in the rudimentary plant mushroom of occurring in nature, the cell of algae, the shell of crustacean shrimp, crab, insect, the cell membrane etc. of higher plant, it is the organic compounds containing nitrogen that on the earth, quantity is maximum, and the annual biosynthetic chitin of nature is approximately 1,000,000,000 tons.Patent CN 101864082 A points out, chitin has good biocompatibility, degradability, is therefore the good candidate preparing medical material.
In recent years, the leachate of various industrial wastes and solid waste directly enters water body, and wherein the content of toxic heavy-metal elements gets more and more, and health and the existence of the various life entities comprising the mankind in serious harm.Heavy metal element is once can cause accumulation property, possible permanent damage after entering human body.The effect of adsorbing in heavy metal-polluted water treatment depends on the use of sorbing material usually, and therefore need to choose one renewable, abundance, preparation cost is low, low price, nontoxic, easily biological-degradable, does not cause the sorbing material of secondary pollution.
Summary of the invention
The object of the invention is to solve the defect existed in prior art, providing a kind of pollution-free, and the heavy-metal adsorption material that adsorption capacity is stronger.
In order to achieve the above object, the invention provides the nanofiber suspension of a kind of chitin or its de-acetyl derivative, described nanofiber suspension with chitin or its de-acetyl derivative shitosan for prepared by raw material; Described nanofiber suspension is prepared by following steps:
(1) raw material soaking: get raw material, adds in deionized water, soaks 2-36 hour; Described chitin or its de-acetyl derivative mass percentage concentration are in deionized water 0.1-15%;
(2) Mechanical Crushing: get the raw material after immersion and carry out Mechanical Crushing, prepare raw slurry; Described Mechanical Crushing comprises wet-milling fragmentation, ball mill crushing or ultrasonication;
(3) homogenize: raw slurry is added deionized water, material quality percentage concentration is 0.1-5%, homogenizes, and obtains described nanofiber suspension.
Wherein in nanofiber suspension, chitin nano fiber or de-acetyl derivative nanofiber are preferably crosslinked network structure; Step (1) Raw soak time is in deionized water 20-36 hour; In described step (2), Mechanical Crushing adopts wet milk or ball mill to mill 5-15 time, each 4-10 minute; Described step homogenizes 10-20 time in (3).
Wherein, the acetyl degree of chitin is 90-96%; The deacetylation of chitin derivativ is 70-92%, and mean molecule quantity is 160000-165000.
Present invention also offers the preparation method of the nanofiber suspension of above-mentioned chitin nano fiber or its de-acetyl derivative, comprise the following steps:
(1) raw material soaking: get raw material, adds in deionized water, soaks 2-36 hour; Described chitin or de-acetyl derivative mass percentage concentration are in deionized water 0.1-15%;
(2) Mechanical Crushing: get the raw material after immersion and carry out Mechanical Crushing, prepare raw slurry; Described Mechanical Crushing comprises wet-milling fragmentation, ball mill crushing or ultrasonication; Described wet-milling fragmentation employing gear spacing is the wet milk of 0.5-20 μm, mills 1-20 time, each 1-10 minute; Described ball mill crushing adopts ball mill, mills 1-15 time, each 1-10 minute; Described ultrasonication adopts condition of ice bath, ultrasonic 1-20 time, each 1-10 minute;
(3) homogenize: raw slurry is added deionized water, material quality percentage concentration is 0.1-5%, homogenizes, and obtains described nanofiber suspension.Described homogenizing adopts microjet high pressure homogenizing device, passes through 1-20 time under 100-300MPa with the speed of 60-250ml/min.
Concrete steps comprise:
(1) add deionized water (compound concentration 0.1-15%) respectively in chitin and de-acetylpyridine derivative raw material, stir 1-10min, soak under being placed in room temperature 2-36 hour (preferred 20-36 hour).
(2) raw material after soaking carries out Mechanical Crushing, method comprises wet-milling crush method, ball mill crushing method, sonioation method (preferred wet-milling crush method or ball mill crushing method): a, wet-milling crush method: the chitin after immersion or de-acetylpyridine derivative raw material are poured in wet milk mill 1-20 time (gear spacing 0.5-20 μm), each 1-10 minute (preferably milling 5-15 time, each 4-10 minute); B, ball mill crushing method: the chitin after immersion or de-acetylpyridine derivative raw material are poured in ball mill and milled 1-15 time, each 1-10 minute (preferably milling 5-15 time, each 4-10 minute); C, sonioation method: the chitin after immersion and de-acetylpyridine derivative raw material under condition of ice bath ultrasonic 1-20 time, each 1-10 minute.
(3) chitin after Mechanical Crushing and de-acetyl derivative slurries add deionized water (compound concentration 0.1-5%), under 100-300MPa, pass through microjet high pressure homogenizing device 1-20 time (preferred 10-20 time) with the speed of 60-250ml/min.
Present invention also offers the nanofiber of a kind of chitin nano fiber or its de-acetyl derivative, adopt the nanofiber suspension freeze-drying of above-mentioned chitin or its de-acetyl derivative to prepare.Concrete steps are: the chitin after homogeneous or chitosan nano fiber slurries after the refrigerator and cooled of-10-50 DEG C freezes 10-30 hour, freeze-drying and get final product in freeze drier.After this nanofiber prepared can add deionized water, ultrasonic preparation nanofiber suspension under condition of ice bath.
Present invention also offers the application of nanofiber suspension (can be directly preparation, also can be nanofiber and add deionized water ultrasonic preparation) at absorbing heavy metal ions of above-mentioned chitin nano fiber or its de-acetyl derivative.Wherein, the adsorbable Cd(of chitin nano fiber suspension
), Pb(
), Cu(
), Ni(
), Zn(
) or Cr(III), preferably adsorb Cd(
) or Pb(
); The adsorbable Cu(of nanofiber suspension of de-acetyl derivative
), Zn(
), Pb(
), Ni(
) or Cd(
), preferred Adsorption of Cu (
), Zn(
) or Pb(
).
The present invention has the following advantages compared to existing technology: the present invention adopts pure mechanical crushing method to replace chemical hydrolysis to prepare nanofiber, non-secondary pollution.Chitin prepared by the present invention or de-acetyl derivative nanofiber can effective Adsorption of Heavy Metal Ions, and added high pressure by Mechanical Crushing and homogenize, and make it be cross-linked structure, improve the adsorption efficiency of heavy metal ion.Nanofiber simultaneously after Adsorption of Heavy Metal Ions is by after high temperature sintering, and heavy metal forms fibrous particle, can effectively reclaim.The chitin prepared by the present invention or de-acetyl derivative nanofiber is renewable, abundance, preparation cost are low, low price, nontoxic, easily biological-degradable, can not cause secondary pollution, and the adsorption capacity of relatively traditional sorbing material heavy metal ion is high.
Accompanying drawing explanation
Fig. 1 is the scanning electron microscope (SEM) photograph of chitin nano fiber in the embodiment of the present invention 1 chitin solution;
Fig. 2 is the scanning electron microscope (SEM) photograph of the embodiment of the present invention 1 chitin nano fiber;
Fig. 3 is the scanning electron microscope (SEM) photograph of chitin derivativ nanofiber of the present invention;
Fig. 4 scanning electron microscope (SEM) photograph that to be deacetylation of the present invention be after chitin derivativ nanofiber Adsorption of Heavy Metals Pb (II) of 90% after 300 DEG C of high temperature sinterings;
Fig. 5 scanning electron microscope (SEM) photograph that to be deacetylation of the present invention be after chitin derivativ nanofiber Adsorption of Heavy Metals Pb (II) of 90% after 500 DEG C of high temperature sinterings;
Fig. 6 scanning electron microscope (SEM) photograph that to be deacetylation of the present invention be after chitin derivativ nanofiber Adsorption of Heavy Metals Cu (II) of 90% after 300 DEG C of high temperature sinterings;
Fig. 7 scanning electron microscope (SEM) photograph that to be deacetylation of the present invention be after chitin derivativ nanofiber Adsorption of Heavy Metals Cu (II) of 90% after 500 DEG C of high temperature sinterings.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is described in detail.
embodiment 1
Get raw material chitin, add deionized water, configuration concentration is 0.1%.Soak after 24 hours, pour in wet milk mill 6 times (gear spacing is 1 μm), each 4 minutes.Chitin fiber particle is through mechanical lapping, and first fiber is broken into thinner fiber (a), then under the effect of continuous mechanical shear stress, reduces into crosslinked microfibre (b), as shown in Figure 1.The chitin solution obtained, under 200MPa, passes through high pressure homogenizing device 10 times with the speed of 120ml/min, obtains chitin nano fiber suspension.
Chitin nano fiber suspension after homogeneous is frozen freeze-drying in freeze drier after 20 hours in the refrigerator and cooled of-18 DEG C, obtains chitin nano fiber.
The chitin nano fiber prepared is cross-linked to form network structure, as shown in Figure 2.
embodiment 2
Get raw material chitin, add deionized water, configuration concentration is 15%.Soak after 20 hours, pour in ball mill and mill 5 times, each 5 minutes.The chitin solution obtained, under 200MPa, passes through high pressure homogenizing device 10 times with the speed of 110ml/min, obtains chitin nano fiber suspension.
Chitin nano fiber suspension after homogeneous is frozen freeze-drying in freeze drier after 20 hours in the refrigerator and cooled of-25 DEG C.
embodiment 3
Be in the chitin raw material of 70%, add deionized water 150 ml to 10 g deacetylations, soak after 25 hours, pour in ball mill mill 15 times (gear spacing is 1 μm), each 4 minutes.It is 5 % that the shitosan slurries obtained add deionized water compound concentration, and slurries, under 200 MPa, pass through high pressure homogenizing device 10 times with the speed of 110ml/min, obtain the nanofiber suspension of chitin deacetylase derivative.
embodiment 4
Be in the chitin raw material of 90%, add deionized water 150 ml to 10 g deacetylations, soak after 30 hours, pour in wet milk mill 10 times (gear spacing is 1 μm), each 6 minutes.It is 5 % that the shitosan slurries obtained add deionized water compound concentration, and slurries, under 200 MPa, pass through high pressure homogenizing device 12 times with the speed of 130ml/min, obtain the nanofiber suspension of chitin deacetylase thing.
Wherein the nanofiber of chitin deacetylase derivative is cross-linked network distribution, and average diameter is 50nm, as shown in Figure 3.
application Example 5
Take the example 1 freeze-drying sample of 1 part of 0.1g, add 100 ml distilled water respectively, under condition of ice bath after ultrasonic 10min, to add concentration be 200mg/L(concentration is 100-500 mg/L) Cd (NO
3)
2in heavy metallic salt solution, in stirred at ambient temperature 72 h.Absorption terminate after, suspension is at 12000 r/min(1000-12000 r/min) rotating speed under centrifugal 2 min(2-30min) after pour out supernatant liquor.Supernatant liquor flame method atomic absorption spectrophotometer measures its concentration.
application Example 6
Take the example 1 freeze-drying sample of 1 part of 0.1g, add 100 ml distilled water respectively, under condition of ice bath after ultrasonic 10min, to add concentration be 200mg/L(concentration is 100-500 mg/L) Cr (NO
3)
3in heavy metallic salt solution, in stirred at ambient temperature 72 h.Absorption terminate after, suspension is at 12000 r/min(1000-12000 r/min) rotating speed under centrifugal 2 min(2-30min) after pour out supernatant liquor.Supernatant liquor flame method atomic absorption spectrophotometer measures its concentration.
application Example 7
Take the example 1 freeze-drying sample of 1 part of 0.1g, add 100 ml distilled water respectively, under condition of ice bath after ultrasonic 10min, to add concentration be 200mg/L(concentration is 100-500 mg/L) Pb (NO
3)
2in heavy metallic salt solution, in stirred at ambient temperature 72 h.Absorption terminate after, suspension is at 12000 r/min(1000-12000 r/min) rotating speed under centrifugal 2 min(2-30min) after pour out supernatant liquor.Supernatant liquor flame method atomic absorption spectrophotometer measures its concentration.
application Example 8
Take the example 1 freeze-drying sample of 1 part of 0.1g, add 100 ml distilled water respectively, under condition of ice bath after ultrasonic 10min, to add concentration be 200mg/L(concentration is 100-500 mg/L) Cu (NO
3)
2in heavy metallic salt solution, in stirred at ambient temperature 72 h.Absorption terminate after, suspension is at 12000 r/min(1000-12000 r/min) rotating speed under centrifugal 2 min(2-30min) after pour out supernatant liquor.Supernatant liquor flame method atomic absorption spectrophotometer measures its concentration.
application Example 9
Take the example 1 freeze-drying sample of 1 part of 0.1g, add 100 ml distilled water respectively, under condition of ice bath after ultrasonic 10min, to add concentration be 200mg/L(concentration is 100-500 mg/L) Ni (NO
3)
2in heavy metallic salt solution, in stirred at ambient temperature 72 h.Absorption terminate after, suspension is at 12000 r/min(1000-12000 r/min) rotating speed under centrifugal 2 min(2-30min) after pour out supernatant liquor.Supernatant liquor flame method atomic absorption spectrophotometer measures its concentration.
application Example 10
Take the example 1 freeze-drying sample of 1 part of 0.1g, add 100 ml distilled water respectively, under condition of ice bath after ultrasonic 10min, to add concentration be 200mg/L(concentration is 100-500 mg/L) Zn (NO
3)
2in heavy metallic salt solution, in stirred at ambient temperature 72 h.Absorption terminate after, suspension is at 12000 r/min(1000-12000 r/min) rotating speed under centrifugal 2 min(2-30min) after pour out supernatant liquor.Supernatant liquor flame method atomic absorption spectrophotometer measures its concentration.
application Example 11
Taking concentration in 1 part of 100ml example 3 is the nanofiber slurries of the chitin deacetylase derivative of 5 %, adds the Cd (NO that concentration is 200mg/L
3)
2in heavy metallic salt solution, arranging temperature controlling bed shaking speed is 150 r/min, and the reaction time is 3 h, and after absorption terminates, suspension pours out supernatant liquor after centrifugal 8min under the rotating speed of 10000 r/min.Supernatant liquor flame method atomic absorption spectrophotometer measures its concentration.
application Example 12
Taking concentration in 1 part of 100ml example 3 is the nanofiber slurries of the chitin deacetylase derivative of 5 %, adds the Pb (NO that concentration is 200mg/L
3)
2in heavy metallic salt solution, arranging temperature controlling bed shaking speed is 150 r/min, and the reaction time is 3 h, and after absorption terminates, suspension pours out supernatant liquor after centrifugal 8 min under the rotating speed of 10000 r/min.Supernatant liquor flame method atomic absorption spectrophotometer measures its concentration.
application Example 13
Taking concentration in 1 part of 100ml example 3 is the nanofiber slurries of the chitin deacetylase derivative of 5 %, adds the Cu (NO that concentration is 200mg/L
3)
2in heavy metallic salt solution, arranging temperature controlling bed shaking speed is 150 r/min, and the reaction time is 3 h, and after absorption terminates, suspension pours out supernatant liquor after centrifugal 8 min under the rotating speed of 10000 r/min.Supernatant liquor flame method atomic absorption spectrophotometer measures its concentration.
application Example 14
Taking concentration in 1 part of 100ml example 3 is the nanofiber slurries of the chitin deacetylase derivative of 5 %, adds the Ni (NO that concentration is 200mg/L
3)
2in heavy metallic salt solution, arranging temperature controlling bed shaking speed is 150 r/min, and the reaction time is 3 h, and after absorption terminates, suspension pours out supernatant liquor after centrifugal 8 min under the rotating speed of 10000 r/min.Supernatant liquor flame method atomic absorption spectrophotometer measures its concentration.
application Example 15
Taking concentration in 1 part of 100ml example 3 is the nanofiber slurries of the chitin deacetylase derivative of 5 %, adds the Zn (NO that concentration is 200mg/L
3)
2in heavy metallic salt solution, arranging temperature controlling bed shaking speed is 150 r/min, and the reaction time is 3 h, and after absorption terminates, suspension pours out supernatant liquor after centrifugal 8 min under the rotating speed of 10000 r/min.Supernatant liquor flame method atomic absorption spectrophotometer measures its concentration.
application Example 16
Taking concentration in 1 part of 100ml example 4 is the nanofiber slurries of the chitin deacetylase derivative of 5 %, adds the Cd (NO that concentration is 200mg/L
3)
2in heavy metallic salt solution, arranging temperature controlling bed shaking speed is 180 r/min, and the reaction time is 4 h, and after absorption terminates, suspension pours out supernatant liquor after centrifugal 5 min under the rotating speed of 12000 r/min.Supernatant liquor flame method atomic absorption spectrophotometer measures its concentration.
application Example 17
Taking concentration in 1 part of 100ml example 4 is the nanofiber slurries of the chitin deacetylase derivative of 5 %, adds the Pb (NO that concentration is 200mg/L
3)
2in heavy metallic salt solution, arranging temperature controlling bed shaking speed is 180 r/min, and the reaction time is 4 h, and after absorption terminates, suspension pours out supernatant liquor after centrifugal 5 min under the rotating speed of 12000 r/min.Supernatant liquor flame method atomic absorption spectrophotometer measures its concentration.
By the high temperature sintering under 300 DEG C (as shown in Figure 4) and 500 DEG C (as shown in Figure 5) of the chitin deacetylase derivates nanometer fiber after Adsorption of Heavy Metals Pb (II), as can be seen from the scanning electron microscope (SEM) photograph after high temperature sintering, after high temperature sintering, nanofiber is intertwined to form cavernous structure, is conducive to the absorption again of heavy metal ion.And after high temperature sintering, heavy metal particles, in threadiness, can effectively reclaim.
application Example 18
Taking concentration in 1 part of 100ml example 4 is the nanofiber slurries of the chitin deacetylase derivative of 5 %, adds the Cu (NO that concentration is 200mg/L
3)
2in heavy metallic salt solution, arranging temperature controlling bed shaking speed is 180 r/min, and the reaction time is 4 h, and after absorption terminates, suspension pours out supernatant liquor after centrifugal 5 min under the rotating speed of 12000 r/min.Supernatant liquor flame method atomic absorption spectrophotometer measures its concentration.
By the high temperature sintering under 300 DEG C (as shown in Figure 6) and 500 DEG C (as shown in Figure 7) of the chitin deacetylase derivates nanometer fiber after Adsorption of Heavy Metals Cu (II), as can be seen from the scanning electron microscope (SEM) photograph after high temperature sintering, after high temperature sintering, nanofiber is intertwined to form cavernous structure, is conducive to the absorption again of heavy metal ion.And after high temperature sintering, heavy metal particles, in threadiness, can effectively reclaim.
application Example 19
Taking concentration in 1 part of 100ml example 4 is the nanofiber slurries of the chitin deacetylase derivative of 5 %, adds the Ni (NO that concentration is 200mg/L
3)
2in heavy metallic salt solution, arranging temperature controlling bed shaking speed is 180 r/min, and the reaction time is 4 h, and after absorption terminates, suspension pours out supernatant liquor after centrifugal 5 min under the rotating speed of 12000 r/min.Supernatant liquor flame method atomic absorption spectrophotometer measures its concentration.
application Example 20
Taking concentration in 1 part of 100ml example 4 is the nanofiber slurries of the chitin deacetylase derivative of 5 %, adds the Zn (NO that concentration is 200mg/L
3)
2in heavy metallic salt solution, arranging temperature controlling bed shaking speed is 180 r/min, and the reaction time is 4 h, and after absorption terminates, suspension pours out supernatant liquor after centrifugal 5 min under the rotating speed of 12000 r/min.Supernatant liquor flame method atomic absorption spectrophotometer measures its concentration.
The measurement result of application example 5-20 is as shown in table 1 below.
Table 1 is to the adsorbance of each heavy metal ion
As can be seen from the above table, chitin nano fiber heavy metal ion all has stronger adsorption capacity, but different to the adsorption capacity of various heavy metal ion, Cd(
) > Pb(
) > Cu(
) > Ni(
) > Zn(
) > Cr(III);
From saturated extent of adsorption, chitin nano fiber to Cd (
) and Pb (
) adsorptive value of this two heavy metal species ion all exceeded 300 mg/g, especially Cd (
) 330 mg/g can be reached, therefore chitin nano fiber has good prospect in the application of the pollution of process Heavy Metals in Waters.
As can be seen from the table, the adsorptive value size order of nanofiber to above five kinds of ions of chitin deacetylase derivative is:
Cu（
）＞Zn（
）＞Pb（
）＞Ni（
）＞Cd（
）。
Claims (7)
1. a nanofiber suspension for chitin or its de-acetyl derivative, described nanofiber suspension with chitin or its de-acetyl derivative for prepared by raw material; The deacetylation of described chitin deacetylase derivative is 70-92%; It is characterized in that: in described nanofiber suspension, chitin nano fiber or its de-acetyl derivative nanofiber are in crosslinked network structure; Described nanofiber suspension is prepared by following steps:
(1) raw material soaking: get raw material, adds in deionized water, soaks 20-36 hour; Described chitin or its de-acetyl derivative mass percentage concentration are in deionized water 0.1-15%;
(2) Mechanical Crushing: get the raw material after immersion and carry out Mechanical Crushing, prepare raw slurry; Described Mechanical Crushing adopts wet milk or ball mill to mill 5-15 time, each 4-10 minute;
(3) homogenize: raw slurry is added deionized water, material quality percentage concentration is 0.1-5%, carries out homogenizing 10-20 time, obtains described nanofiber suspension.
2. the preparation method of the nanofiber suspension of chitin nano fiber described in claim 1 or its de-acetyl derivative, is characterized in that: comprise the following steps:
(1) raw material soaking: get raw material, adds in deionized water, soaks 20-36 hour; Described chitin or its de-acetyl derivative mass percentage concentration are in deionized water 0.1-15%;
(2) Mechanical Crushing: get the raw material after immersion and carry out Mechanical Crushing, prepare raw slurry; Described Mechanical Crushing adopts wet milk or ball mill to mill 5-15 time, each 4-10 minute;
(3) homogenize: raw slurry is added deionized water, material quality percentage concentration is 0.1-5%, homogenizes, and obtains described nanofiber suspension; Described homogenizing adopts microjet high pressure homogenizing device, passes through 10-20 time under 100-300MPa with the speed of 60-250ml/min.
3. a nanofiber for chitin nano fiber or its de-acetyl derivative, described nanofiber adopts the nanofiber suspension of chitin or its de-acetyl derivative described in claim 1 to be raw material; It is characterized in that: described nanofiber adopts the nanofiber suspension freeze-drying of described chitin or its de-acetyl derivative to prepare.
4. the nanofiber suspension of chitin nano fiber described in claim 1 or its de-acetyl derivative is in the application of absorbing heavy metal ions.
5. the nanofiber suspension of chitin nano fiber described in claim 1 or its de-acetyl derivative is at Adsorption of Heavy Metal Ions Cd(
), Pb(
), Cu(
), Ni(
), Zn(
) or the application of Cr(III) aspect.
6. chitin nano fiber suspension described in claim 1 is at absorption Cd(
) or Pb(
) application of aspect.
7. de-acetyl derivative nanofiber suspension described in claim 1 Adsorption of Cu (
), Zn(
) or Pb(
) application of aspect.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3052148A2 (en) * | 2013-10-02 | 2016-08-10 | Mavi Sud S.R.L | Suspensions and materials comprising complexes of chitin nanofibrils with metals |
| CN103774287B (en) * | 2014-01-17 | 2017-02-08 | 北京化工大学常州先进材料研究院 | Method for strengthening chitosan derivative nanofiber by photopolymerization reaction |
| CN106192073B (en) * | 2016-08-19 | 2018-03-06 | 南京林业大学 | A kind of method that wire conductive material is prepared based on chitin nano fiber |
| CN106592311A (en) * | 2016-12-13 | 2017-04-26 | 华南理工大学 | Preparation method of nanofibril cellulose |
| CN111686695A (en) * | 2020-04-22 | 2020-09-22 | 杭州嘉澍环境监测有限公司 | Preparation method of modified chitin material and application of modified chitin material as noble metal gold adsorption material |
| CN114984883A (en) * | 2022-03-24 | 2022-09-02 | 南京信息工程大学 | Micro-electrolysis method for improving static neutralization capacity of chitosan |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101665589A (en) * | 2009-09-18 | 2010-03-10 | 浙江大学 | Method for enhancing and modifying three-dimensional chitosan bar material by using chitin fibre |
| CN102690658A (en) * | 2012-05-28 | 2012-09-26 | 广东普加福光电科技有限公司 | Quantum dot-embedded porous silicon dioxide composite material, and preparation method and application thereof |
-
2013
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101665589A (en) * | 2009-09-18 | 2010-03-10 | 浙江大学 | Method for enhancing and modifying three-dimensional chitosan bar material by using chitin fibre |
| CN102690658A (en) * | 2012-05-28 | 2012-09-26 | 广东普加福光电科技有限公司 | Quantum dot-embedded porous silicon dioxide composite material, and preparation method and application thereof |
Non-Patent Citations (1)
| Title |
|---|
| Disassembly of chitosan nanofiber and reorganization of ordered liquid crystal;刘大刚等;《两岸三地高分子液晶态与超分子有序结构学术研讨会》;20120831;409-410 * |
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