CN105968758A - Liquid silica gel modified cyanophyta-based composite bioplastic and preparation method thereof - Google Patents
Liquid silica gel modified cyanophyta-based composite bioplastic and preparation method thereof Download PDFInfo
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Abstract
The invention discloses liquid silica gel modified cyanophyta-based composite bioplastic which comprises, by weight, 130-135 parts of cyanophyta, 4-5 parts of lactobacillus, 5-6 parts of bacillus, 7-8 parts of pycnoporus sanguineus spore liquid, 10-11 parts of liquid silica gel, 2-3 parts of nanosilver colloid, 7-8 parts of cyclodextrin, 15-16 parts of fructose, 60-62 parts of kenaf fiber, 58-60 parts of sponge rubber, 4-5 parts of sodium aliginate and 8-9 parts of N-succinyl chitosan. The cyanophyta-based composite bioplastic is prepared by combining kenaf fiber and sponge rubber with a cyanophyta fermentation deep-processing product under action of dibenzoyl peroxide serving as a cross linking agent, and the plastic is biodegradable and highly flexible and foldable; liquid silica gel and nanosilver colloid which are added are combined, so that release rate of nanosilver is reduced, antibacterial validity period of the bioplastic is prolonged, and the bioplastic has excellent antibacterial performance.
Description
Technical field
The present invention relates to cyanophyceae radical biological degradable plastics arts, particularly relate to a kind of liquid silica gel modification cyanophyceae base compound bio plastics and preparation method thereof.
Background technology
Lactic acid, polylactic acid are biochemical products, with recyclable organism material as raw material, utilize biotechnology, product to have biodegradability.The environmental pollution that the energy crisis brought along with petroleum resources exhaustion and chemical industry cause is day by day serious, utilize biomass-based raw material for substrate, significant by Production by Microorganism Fermentation lactic acid；Cyanophyceae is that a class evolutionary history is long, Gram-negative, and atrichia, containing chlorophyll a, is formed without chloroplast, can carry out producing the photosynthetic prokaryote of oxygen performance.Cyanophyceae fermenting raw materials has the non-food products such as high value-added product lactic acid, Pfansteihl, these products can be greatly improved the value of blue algae resource, it is prepared as biological plastics, Wuxi Delin Algal Water Separating Technology Development Co., Ltd. develops the algae powder technology that algae mud is made moisture content less than 10%, the U.S. that exports to that these algae powder costs are the highest is prepared as biological plastics, and oneself lack and be directly realized by the technology that cyanophyceae is processed to biological plastics accordingly, although occupying favourable resource, benefit can not be realized；The domestic current utilization to cyanophyceae focuses mostly on and first prepares the biomass such as cyanophyceae such as blue-green alga extract cyanophycin, cyanophyceae fiber, combine other raw material at the premium properties utilizing these biomass and prepare some biomembranes, and the report directly developing preparation cyanophyceae base biological plastics about cyanophyceae is the most few.
Cyanophyceae directly develops preparation cyanophyceae base biological plastics the following two problem that often is faced with: (1), cyanophyceae raw material realize the cyanophyceae conversion ratio problem to lactic acid by fermenting lactic acid, and this problem directly determines raw-material utilization ratio；(2), lactic acid, Pfansteihl and the performance improvement problem of poly lactic acid polymerized generation biological plastics.The single method of modifying such as adjusting, cross-link, fill or be blended frequently with plasticising, acid, but this single method of modifying is limited, and the Based Full-degradable Plastics Film function singleness prepared and cost height cannot realize the high value of cyanophyceae and develop
Count out utilize cyanophyceae raw material efficiently produce high-quality cyanophyceae base biological plastics to improve cyanophyceae value of exploiting and utilizing have great importance.
Summary of the invention
The object of the invention is contemplated to make up the defect of prior art, it is provided that a kind of liquid silica gel modification cyanophyceae base compound bio plastics and preparation method thereof.
The present invention is achieved by the following technical solutions:
A kind of liquid silica gel modification cyanophyceae base compound bio plastics, including following parts by weight of component: cyanophyceae 130-135, lactobacillus 4-5, bacillus cereus 5-6, pycnoporus samguineus spore liquid 7-8, liquid silica gel 10-11, nano-silver colloid 2-3, cyclodextrin 7-8, fructose 15-16, bastose 60-62, sponge rubber 58-60, sodium alginate 4-5, N-succinyl-chitosan 8-9, cellulose diacetate 2-3, peroxidating phenyl-diformyl 3-4, polyvinyl alcohol 4-5, appropriate water.
A kind of liquid silica gel modification cyanophyceae base compound bio plastics preparation method, comprises the following steps:
(1), by liquid silica gel after 110 DEG C of high temperature melting, cooling procedure rapidly joins nano-silver colloid, after stirring, cold drying micronizing, obtain modified silicon rubber powder standby；The water of modified silicon rubber powder, fructose, biomass nano cellulose, cyclodextrin and gross weight 2 times is mixed, after 80 DEG C of high pressure homogenize are uniformly, spray drying technology is used to be dried to obtain modified fructose, by lactobacillus, bacillus cereus, pycnoporus samguineus spore liquid, modified fructose and the water mixing and stirring of gross weight 0.5 times, low temperature 30 DEG C is dried activation, and stirs and be dried that to be prepared as microencapsulation composite bacterium powder standby；
(2), dynamic fermentation can system is built: described dynamic fermentation can system includes two fermentation tanks placed up and down, and upper and lower fermentation tank connectivity part is provided with filter membrane, and outside is provided with dynamic pump, for bottom fermentation tank fermented product is pumped into top fermentation tank；Cyanophyceae is removed silt, micronizing, add the water mixing and stirring of gross weight 5 times, use ultrasonic assistant broken wall treatment 1h of 600W, obtain cyanophyceae culture medium, after sterilized for this culture medium process, put in the top fermentation tank of constructed dynamic fermentation can system, and put into microencapsulation composite bacterium powder, stirring fermentation at 25 DEG C, when the fermentation liquid of the cyanophyceae culture medium in top fermentation tank passes through membrane filtration to bottom fermentation tank, when making culture medium be deposited to top fermentation pot bottom, unlatching dynamic pump realizes bottom fermentation tank fermented product and once pumps into top fermentation tank, and and top fermentation tank culture medium mixing and stirring, it is again stirring for fermentation to culture medium and is deposited to top fermentation pot bottom, complete circulation fed-batch fermentation once, circulate 4-5 time, top fermentation tank obtains blue algae fermentation slag standby；The blue algae fermentation complex liquid obtaining high lactic acid conversion ratio in bottom fermentation tank is standby；
(3), the blue algae fermentation slag that step (2) obtains bakes after shrink micronizing again, and to obtain cyanophyceae fiber standby；The blue algae fermentation complex liquid of the high lactic acid conversion ratio that step (2) is obtained first 80 DEG C of stirring concentration 50min, put into afterwards in closed reactor, it is passed through noble gas N2 to be slowly heated to 160 DEG C and be evacuated to 160Pa and continuously stirred lactic acid Direct Dehydration be condensed, continue heating afterwards and slowly reduce pressure, at 220-260 DEG C, under 133Pa, further polycondensation, obtains polydactyl acid；
(4), this polydactyl acid will add bastose, sponge rubber, sodium alginate, N-succinyl-chitosan, cellulose diacetate and alginate fibre, under the conditions of 70-75 DEG C, 600-700rpm/min speed stirring 26-28min forms suspension, form suspension, this suspension will add peroxidating phenyl-diformyl, polyvinyl alcohol, 600-700rpm/min speed stirring 40-45min under the conditions of 90-95 DEG C, obtain reactant liquor, by this reactant liquor through screw extruder extruding pelletization, by the pellet of extruding pelletization through calendering film forming, then natural cooling is dried, obtain.
The invention have the advantage that the present invention uses bastose, sponge rubber to coordinate blue algae fermentation deep processing product to prepare cyanophyceae base biological plastics under the effect of cross-linking agent peroxidating phenyl-diformyl, these plastics have biodegradability, there is good pliability and foldability, the liquid silica gel added and nano-silver colloid combine, slow down the rate of release of nanometer silver, extend the antibacterial expiry date of this biological plastics so that it is there is the anti-microbial property of excellence；Meanwhile, in the preparation process of modified fructose, utilize mechanical property and the space structure of liquid silica gel so that it is there is good uniform high surface area, provide good carrier and the carbon source that can make full use of for blue algae fermentation bacterium；Modified fructose coordinates the design of repeatedly fed-batch fermentation technique to improve the lactic acid fermented rotational rate of lactic acid of cyanophyceae, meanwhile, conveniently achieves the separation of blue algae fermentation product, provides the foundation for efficiently producing of cyanophyceae base biological plastics.Present invention process is simple, good in economic efficiency, develops significant to the high-efficiency and economic of domestic cyanophyceae base biofilm.
Detailed description of the invention
A kind of liquid silica gel modification cyanophyceae base compound bio plastics, including following parts by weight of component: cyanophyceae 130, lactobacillus 4, bacillus cereus 5, pycnoporus samguineus spore liquid 7, liquid silica gel 10, nano-silver colloid 2, cyclodextrin 7, fructose 15, bastose 60, sponge rubber 58, sodium alginate 4, N succinyl-chitosan 8, cellulose diacetate 2, peroxidating phenyl-diformyl 3, polyvinyl alcohol 4, appropriate water.
A kind of liquid silica gel modification cyanophyceae base compound bio plastics preparation method, comprises the following steps:
(1), by liquid silica gel after 110 DEG C of high temperature melting, cooling procedure rapidly joins nano-silver colloid, after stirring, cold drying micronizing, obtain modified silicon rubber powder standby；The water of modified silicon rubber powder, fructose, biomass nano cellulose, cyclodextrin and gross weight 2 times is mixed, after 80 DEG C of high pressure homogenize are uniformly, spray drying technology is used to be dried to obtain modified fructose, by lactobacillus, bacillus cereus, pycnoporus samguineus spore liquid, modified fructose and the water mixing and stirring of gross weight 0.5 times, low temperature 30 DEG C is dried activation, and stirs and be dried that to be prepared as microencapsulation composite bacterium powder standby；
(2), dynamic fermentation can system is built: described dynamic fermentation can system includes two fermentation tanks placed up and down, and upper and lower fermentation tank connectivity part is provided with filter membrane, and outside is provided with dynamic pump, for bottom fermentation tank fermented product is pumped into top fermentation tank；Cyanophyceae is removed silt, micronizing, add the water mixing and stirring of gross weight 5 times, use ultrasonic assistant broken wall treatment 1h of 600W, obtain cyanophyceae culture medium, after sterilized for this culture medium process, put in the top fermentation tank of constructed dynamic fermentation can system, and put into microencapsulation composite bacterium powder, stirring fermentation at 25 DEG C, when the fermentation liquid of the cyanophyceae culture medium in top fermentation tank passes through membrane filtration to bottom fermentation tank, when making culture medium be deposited to top fermentation pot bottom, unlatching dynamic pump realizes bottom fermentation tank fermented product and once pumps into top fermentation tank, and and top fermentation tank culture medium mixing and stirring, it is again stirring for fermentation to culture medium and is deposited to top fermentation pot bottom, complete circulation fed-batch fermentation once, circulate 4 times, top fermentation tank obtains blue algae fermentation slag standby；The blue algae fermentation complex liquid obtaining high lactic acid conversion ratio in bottom fermentation tank is standby；
(3), the blue algae fermentation slag that step (2) obtains bakes after shrink micronizing again, and to obtain cyanophyceae fiber standby；The blue algae fermentation complex liquid of the high lactic acid conversion ratio that step (2) is obtained first 80 DEG C of stirring concentration 50min, put into afterwards in closed reactor, it is passed through noble gas N2 to be slowly heated to 160 DEG C and be evacuated to 160Pa and continuously stirred lactic acid Direct Dehydration be condensed, continue heating afterwards and slowly reduce pressure, at 220 DEG C, under 133Pa, further polycondensation, obtains polydactyl acid；
(4), this polydactyl acid will add bastose, sponge rubber, sodium alginate, N succinyl-chitosan, cellulose diacetate and alginate fibre, under the conditions of 70 DEG C, 600rpm/min speed stirring 26min forms suspension, form suspension, this suspension will add peroxidating phenyl-diformyl, polyvinyl alcohol, 600rpm/min speed stirring 40min under the conditions of 90 DEG C, obtain reactant liquor, by this reactant liquor through screw extruder extruding pelletization, by the pellet of extruding pelletization through calendering film forming, then natural cooling is dried, and to obtain final product.
Claims (2)
1. liquid silica gel modification cyanophyceae base compound bio plastics, it is characterized in that, including following parts by weight of component: cyanophyceae 130-135, lactobacillus 4-5, bacillus cereus 5-6, pycnoporus samguineus spore liquid 7-8, liquid silica gel 10-11, nano-silver colloid 2-3, cyclodextrin 7-8, fructose 15-16, bastose 60-62, sponge rubber 58-60, sodium alginate 4-5, N-succinyl-chitosan 8-9, cellulose diacetate 2-3, peroxidating phenyl-diformyl 3-4, polyvinyl alcohol 4-5, appropriate water.
2. a liquid silica gel modification cyanophyceae base compound bio plastics preparation method, it is characterised in that comprise the following steps:
(1), by liquid silica gel after 110 DEG C of high temperature melting, cooling procedure rapidly joins nano-silver colloid, after stirring, cold drying micronizing, obtain modified silicon rubber powder standby；The water of modified silicon rubber powder, fructose, biomass nano cellulose, cyclodextrin and gross weight 2 times is mixed, after 80 DEG C of high pressure homogenize are uniformly, spray drying technology is used to be dried to obtain modified fructose, by lactobacillus, bacillus cereus, pycnoporus samguineus spore liquid, modified fructose and the water mixing and stirring of gross weight 0.5 times, low temperature 30 DEG C is dried activation, and stirs and be dried that to be prepared as microencapsulation composite bacterium powder standby；
(2), dynamic fermentation can system is built: described dynamic fermentation can system includes two fermentation tanks placed up and down, and upper and lower fermentation tank connectivity part is provided with filter membrane, and outside is provided with dynamic pump, for bottom fermentation tank fermented product is pumped into top fermentation tank；Cyanophyceae is removed silt, micronizing, add the water mixing and stirring of gross weight 5 times, use ultrasonic assistant broken wall treatment 1h of 600W, obtain cyanophyceae culture medium, after sterilized for this culture medium process, put in the top fermentation tank of constructed dynamic fermentation can system, and put into microencapsulation composite bacterium powder, stirring fermentation at 25 DEG C, when the fermentation liquid of the cyanophyceae culture medium in top fermentation tank passes through membrane filtration to bottom fermentation tank, when making culture medium be deposited to top fermentation pot bottom, unlatching dynamic pump realizes bottom fermentation tank fermented product and once pumps into top fermentation tank, and and top fermentation tank culture medium mixing and stirring, it is again stirring for fermentation to culture medium and is deposited to top fermentation pot bottom, complete circulation fed-batch fermentation once, circulate 4-5 time, top fermentation tank obtains blue algae fermentation slag standby；The blue algae fermentation complex liquid obtaining high lactic acid conversion ratio in bottom fermentation tank is standby；
(3), the blue algae fermentation slag that step (2) obtains bakes after shrink micronizing again, and to obtain cyanophyceae fiber standby；The blue algae fermentation complex liquid of the high lactic acid conversion ratio that step (2) is obtained first 80 DEG C of stirring concentration 50min, put into afterwards in closed reactor, it is passed through noble gas N2 to be slowly heated to 160 DEG C and be evacuated to 160Pa and continuously stirred lactic acid Direct Dehydration be condensed, continue heating afterwards and slowly reduce pressure, at 220-260 DEG C, under 133Pa, further polycondensation, obtains polydactyl acid；
(4), this polydactyl acid will add bastose, sponge rubber, sodium alginate, N-succinyl-chitosan, cellulose diacetate and alginate fibre, under the conditions of 70-75 DEG C, 600-700rpm/min speed stirring 26-28min forms suspension, form suspension, this suspension will add peroxidating phenyl-diformyl, polyvinyl alcohol, 600-700rpm/min speed stirring 40-45min under the conditions of 90-95 DEG C, obtain reactant liquor, by this reactant liquor through screw extruder extruding pelletization, by the pellet of extruding pelletization through calendering film forming, then natural cooling is dried, obtain.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107083045A (en) * | 2017-05-25 | 2017-08-22 | 句容市兴武包装有限公司 | A kind of method that degradable film for package is prepared by base-material of blue-green algae |
| CN114698648A (en) * | 2022-03-29 | 2022-07-05 | 浙江恒达新材料股份有限公司 | Preparation method of nano-silver loaded antibacterial fiber nanoparticles |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102108196A (en) * | 2010-12-30 | 2011-06-29 | 广东上九生物降解塑料有限公司 | Method for preparing polylactic acid degradable material |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102108196A (en) * | 2010-12-30 | 2011-06-29 | 广东上九生物降解塑料有限公司 | Method for preparing polylactic acid degradable material |
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| Title |
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| 杨海麟: ""蓝藻资源无害化利用技术的研究"", 《生物技术》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107083045A (en) * | 2017-05-25 | 2017-08-22 | 句容市兴武包装有限公司 | A kind of method that degradable film for package is prepared by base-material of blue-green algae |
| CN107083045B (en) * | 2017-05-25 | 2020-01-17 | 句容市兴武包装有限公司 | Method for preparing degradable packaging film by using blue algae as base material |
| CN114698648A (en) * | 2022-03-29 | 2022-07-05 | 浙江恒达新材料股份有限公司 | Preparation method of nano-silver loaded antibacterial fiber nanoparticles |
| CN114698648B (en) * | 2022-03-29 | 2024-03-22 | 浙江恒达新材料股份有限公司 | Preparation method of nano silver loaded antibacterial fiber nano particles |
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Application publication date: 20160928 |