CN105153657A - Peeled flax seed powder compound modified bacteria synthesized polyester material and preparation method thereof - Google Patents
Peeled flax seed powder compound modified bacteria synthesized polyester material and preparation method thereof Download PDFInfo
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- CN105153657A CN105153657A CN201510464855.4A CN201510464855A CN105153657A CN 105153657 A CN105153657 A CN 105153657A CN 201510464855 A CN201510464855 A CN 201510464855A CN 105153657 A CN105153657 A CN 105153657A
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- linseed meal
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Abstract
The invention belongs to the field of natural high-molecular materials, and concretely relates to a peeled flax seed powder compound modified biomass based polyester material and a preparation method thereof. The peeled flax seed powder composite modified biomass based polyester material is compositely prepared from 5-30 parts of peeled flax seed powder and 100 parts of biomass based polyester. The peeled flax seed powder is used for compound modification of the biomass based polyester, and has the advantages of low cost, environmental friendliness, good compatibility, etc.; banbury mixing is combined with hot pressing composite moulding technology, and the method has the characteristics of simple and fast process, high efficiency and environmental protection; after the peeled flax seed powder is compounded and modified, fracture elongation of the biomass based polyester material is largely improved, the brittleness of the material is substantially decreased, the toughness is substantially increased, and thereby application scope of the material is effectively extended; the peeled flax seed powder composite modified biomass based polyester material can be directly molded and processed into film, sheet material, section bar or container, etc., and can also be used as package material or engineering plastic, etc.
Description
Technical field
The invention belongs to natural macromolecular material field, be specifically related to one and shell linseed meal composite modified bacterium synthesizing polyester material and preparation method thereof.
Background technology
The linseed meal that shells is the product after flex seed peeling after milling, sieving, and has inexpensive (flax easily grows, and can obtain better income), renewable, advantages of environment protection.Flax belongs to cress, and be a kind of continuable substitute energy crop had a high potential, it can be processed into high-quality recyclable fuel (as biofuel etc.) effectively.Except containing except oil, flax also containing multiple proteins and carbohydrate, can be used for developing value-added biological products.Along with petroleum resources growing tension, the prices of raw and semifnished materials rise steadily and the problem such as environmental degradation, and the investigation and application based on renewable resources natural macromolecular material is extensively paid attention to.Present stage mainly concentrates on their fuel applications aspect for the research of flax, but but to rarely have as the research that proteinaceous starting material directly apply to developing material aspect for it and relate to.
Biodegradable material refers to by various ways such as photodegradation, chemical degradation, biological degradations, material degradation is become the lower-molecular substance of environmental sound, has the material of good Practical Performance.Biodegradable material comprises natural materials and synthetic materials, natural materials comprises starch, Mierocrystalline cellulose, chitin and their derivative thereof, synthetic materials contains hydrolyzable functional group (as: ester bond, urea key, amido linkage, ehter bond etc.) usually, as poly butyric ester, poly(lactic acid), poly butylene succinate, polycaprolactone etc.Poly butyric ester is a kind of degradable polyester synthetic materials, industrially to synthesize mainly through bacterium (as: alcaligenes eutrophus, azotobacter vinelandii, methylotrophic bacteria etc.), but the fragility of existing poly butyric ester is comparatively large, which greatly limits the range of application of poly butyric ester at Material Field.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, object is to provide one to shell linseed meal composite modified bacterium synthesizing polyester material and preparation method thereof.
For achieving the above object, the technical solution adopted in the present invention is:
One is shelled linseed meal composite modified bacterium synthesizing polyester material, it is characterized in that, by shelling, linseed meal and bacterium synthesizing polyester Material cladding form, described bacterium synthesizing polyester material is poly-(3-hydroxybutyrate ester-co-4-butyric ester), described in the shell weight part ratio of linseed meal and poly-(3-hydroxybutyrate ester-co-4-butyric ester) be 5 ~ 30:100.
By such scheme, described in the shell weight part ratio of linseed meal and poly-(3-hydroxybutyrate ester-co-4-butyric ester) be 10 ~ 20:100.
By such scheme, described in the linseed meal that shells be the powder that obtains after milling, sieve and clearing up after flex seed peeling, its protein content is not higher than 46wt%, and fat content is not higher than 24wt%, and carbohydrate content is not higher than 25wt%.
The preparation method of the above-mentioned linseed meal that shells composite modified bacterium synthesizing polyester material, it is characterized in that, comprise the steps: that (1) takes poly-(3-hydroxybutyrate ester-co-4-butyric ester) and the linseed meal that shells, after mixing, obtain blend; Blend is placed in banburying in Banbury mixer and obtains solid mixture; (2) be placed in by solid mixture on thermocompressor and carry out hot pressing composite molding, shaping final vacuum drying removing moisture obtains the linseed meal composite modified bacterium synthesizing polyester material that shells.
By such scheme, the processing condition of described banburying are: temperature is 140 ~ 220 DEG C, and rotating speed is 10 ~ 120rpm, and the time is 1 ~ 30 minute.
By such scheme, the processing condition of described hot pressing composite molding are: temperature is 140 ~ 160 DEG C, pressure is 10 ~ 60MPa, the time is 1 ~ 15 minute.
By such scheme, described vacuum-drying is: vacuum-drying 12 ~ 72 hours under 40 ~ 60 DEG C of conditions.
Beneficial effect of the present invention is as follows: (1) the present invention adopts the linseed meal that shells to carry out composite modified to poly-(3-hydroxybutyrate ester-co-4-butyric ester), has the advantages such as with low cost, environmental friendliness, highly compatible; Adopt banburying mixing, hot pressing composite molding technique, have that technique is simple, quick, efficient, the feature of environmental protection; (2) linseed meal that shells of the present invention composite modified bacterium synthesizing polyester material is a kind of degradable environment-friendly material; After the linseed meal that shells is composite modified, tensile strength, the elongation at break of poly-(3-hydroxybutyrate ester-co-4-butyric ester) are improved significantly, the intensity of material increases, fragility reduces, toughness increases, effectively expand the range of application of material, the described linseed meal that shells composite modified bacterium synthesizing polyester material can be processed as film, sheet material, section bar or container etc. by straight forming, also can be used as wrapping material or engineering plastics etc.
Accompanying drawing explanation
Fig. 1 is bacterium synthesizing polyester material pictorial diagram, is from left to right wherein comparative example 1 successively, embodiment 1 ~ 6 gained shells linseed meal composite modified bacterium synthesizing polyester material.
Fig. 2 polyester material pictorial diagram, the left side is polylactic acid based polyester material pictorial diagram, and the right is bacterium synthesizing polyester material pictorial diagram prepared by the embodiment of the present invention 5.
Embodiment
In order to understand the present invention better, illustrate content of the present invention further below in conjunction with embodiment, but content of the present invention is not only confined to the following examples.
Embodiment 1
One is shelled linseed meal composite modified bacterium synthesizing polyester material, prepares by the following method:
(1) by the linseed meal 5 parts that shells, poly-(3-hydroxybutyrate ester-co-4-butyric ester) 100 parts, choose the linseed meal that shells, poly-(3-hydroxybutyrate ester-co-4-butyric ester), the linseed meal that will shell tentatively mixes with poly-(3-hydroxybutyrate ester-co-4-butyric ester), obtains blend;
(2) blend be placed in Banbury mixer carry out banburying: temperature is 140 DEG C, rotating speed 48rpm (rev/min), 30 minutes time, obtain solid mixture;
(3) solid mixture after banburying is carried out hot pressing composite molding on thermocompressor: temperature is 140 DEG C, pressure is 10MPa, the time is 15 minutes; After shaping, under 40 DEG C of conditions, vacuum-drying removes moisture in 72 hours, obtains the linseed meal composite modified bacterium synthesizing polyester material that shells.
The CMT6503 instrument newly thinking carefully testing tool company in Shenzhen according to GB4456-84 carries out Mechanics Performance Testing to the linseed meal that shells composite modified bacterium synthesizing polyester material prepared by the present embodiment, rate of extension is 10mm/min, test result shows: after the linseed meal that shells is composite modified, the performance of bacterium synthesizing polyester material in tensile strength, elongation at break is significantly improved, and concrete numerical value is in table 1.
Embodiment 2
One is shelled linseed meal composite modified bacterium synthesizing polyester material, prepares by the following method:
(1) by the linseed meal 10 parts that shells, poly-(3-hydroxybutyrate ester-co-4-butyric ester) 100 parts, choose the linseed meal that shells, poly-(3-hydroxybutyrate ester-co-4-butyric ester), the linseed meal that will shell tentatively mixes with poly-(3-hydroxybutyrate ester-co-4-butyric ester), obtains blend;
(2) blend be placed in Banbury mixer carry out banburying: temperature is 160 DEG C, rotating speed 60rpm (rev/min), 20 minutes time, obtain solid mixture;
(3) solid mixture after banburying is carried out hot pressing composite molding on thermocompressor: temperature is 145 DEG C, pressure is 20MPa, the time is 12 minutes; After shaping, under 50 DEG C of conditions, vacuum-drying removes moisture in 60 hours, obtains the linseed meal composite modified bacterium synthesizing polyester material that shells.
The CMT6503 instrument newly thinking carefully testing tool company in Shenzhen according to GB4456-84 carries out Mechanics Performance Testing to the linseed meal that shells composite modified bacterium synthesizing polyester material prepared by the present embodiment, rate of extension is 10mm/min, test result shows: after the linseed meal that shells is composite modified, the performance of bacterium synthesizing polyester material in tensile strength, elongation at break is significantly improved, and concrete numerical value is in table 1.
Embodiment 3
One is shelled linseed meal composite modified bacterium synthesizing polyester material, prepares by the following method:
(1) by the linseed meal 15 parts that shells, poly-(3-hydroxybutyrate ester-co-4-butyric ester) 100 parts, choose the linseed meal that shells, poly-(3-hydroxybutyrate ester-co-4-butyric ester), the linseed meal that will shell tentatively mixes with poly-(3-hydroxybutyrate ester-co-4-butyric ester), obtains blend;
(2) blend be placed in Banbury mixer carry out banburying: temperature is 170 DEG C, rotating speed 80rpm (rev/min), 15 minutes time, obtain solid mixture;
(3) solid mixture after banburying is carried out hot pressing composite molding on thermocompressor: temperature is 150 DEG C, pressure is 30MPa, the time is 8 minutes; After shaping, under 60 DEG C of conditions, vacuum-drying removes moisture in 12 hours, obtains the linseed meal composite modified bacterium synthesizing polyester material that shells.
The CMT6503 instrument newly thinking carefully testing tool company in Shenzhen according to GB4456-84 carries out Mechanics Performance Testing to the linseed meal that shells composite modified bacterium synthesizing polyester material prepared by the present embodiment, rate of extension is 10mm/min, test result shows: after the linseed meal that shells is composite modified, the performance of bacterium synthesizing polyester material in tensile strength, elongation at break is significantly improved, and concrete numerical value is in table 1.
Embodiment 4
One is shelled linseed meal composite modified bacterium synthesizing polyester material, prepares by the following method:
(1) by the linseed meal 20 parts that shells, poly-(3-hydroxybutyrate ester-co-4-butyric ester) 100 parts, choose the linseed meal that shells, poly-(3-hydroxybutyrate ester-co-4-butyric ester), the linseed meal that will shell tentatively mixes with poly-(3-hydroxybutyrate ester-co-4-butyric ester), obtains blend;
(2) blend be placed in Banbury mixer carry out banburying: temperature is 180 DEG C, rotating speed 100rpm (rev/min), 12 minutes time, obtain solid mixture;
(3) solid mixture after banburying is carried out hot pressing composite molding on thermocompressor: temperature is 155 DEG C, pressure is 40MPa, the time is 5 minutes; After shaping, under 60 DEG C of conditions, vacuum-drying removes moisture in 12 hours, obtains the linseed meal composite modified bacterium synthesizing polyester material that shells.
The CMT6503 instrument newly thinking carefully testing tool company in Shenzhen according to GB4456-84 carries out Mechanics Performance Testing to the linseed meal that shells composite modified bacterium synthesizing polyester material prepared by the present embodiment, rate of extension is 10mm/min, test result shows: after the linseed meal that shells is composite modified, the performance of bacterium synthesizing polyester material in tensile strength, elongation at break is significantly improved, and concrete numerical value is in table 1.
Embodiment 5
One is shelled linseed meal composite modified bacterium synthesizing polyester material, prepares by the following method:
(1) by the linseed meal 25 parts that shells, poly-(3-hydroxybutyrate ester-co-4-butyric ester) 100 parts, choose the linseed meal that shells, poly-(3-hydroxybutyrate ester-co-4-butyric ester), the linseed meal that will shell tentatively mixes with poly-(3-hydroxybutyrate ester-co-4-butyric ester), obtains blend;
(2) blend be placed in Banbury mixer carry out banburying: temperature is 200 DEG C, rotating speed 120rpm (rev/min), 5 minutes time, obtain solid mixture;
(3) solid mixture after banburying is carried out hot pressing composite molding on thermocompressor: temperature is 160 DEG C, pressure is 50MPa, the time is 3 minutes; After shaping, under 60 DEG C of conditions, vacuum-drying removes moisture in 12 hours, obtains the linseed meal composite modified bacterium synthesizing polyester material that shells.
The CMT6503 instrument newly thinking carefully testing tool company in Shenzhen according to GB4456-84 carries out Mechanics Performance Testing to the linseed meal that shells composite modified bacterium synthesizing polyester material prepared by the present embodiment, rate of extension is 10mm/min, test result shows: after the linseed meal that shells is composite modified, the performance of bacterium synthesizing polyester material in tensile strength, elongation at break is significantly improved, and concrete numerical value is in table 1.
Embodiment 6
One is shelled linseed meal composite modified bacterium synthesizing polyester material, prepares by the following method:
(1) by the linseed meal 30 parts that shells, poly-(3-hydroxybutyrate ester-co-4-butyric ester) 100 parts, choose the linseed meal that shells, poly-(3-hydroxybutyrate ester-co-4-butyric ester), the linseed meal that will shell tentatively mixes with poly-(3-hydroxybutyrate ester-co-4-butyric ester), obtains blend;
(2) blend be placed in Banbury mixer carry out banburying: temperature is 220 DEG C, rotating speed 10rpm (rev/min), 1 minute time, obtain solid mixture;
(3) solid mixture after banburying is carried out hot pressing composite molding on thermocompressor: temperature is 160 DEG C, pressure is 60MPa, the time is 1 minute; After shaping, under 60 DEG C of conditions, vacuum-drying removes moisture in 12 hours, obtains the linseed meal composite modified bacterium synthesizing polyester material that shells.
The CMT6503 instrument newly thinking carefully testing tool company in Shenzhen according to GB4456-84 carries out Mechanics Performance Testing to the linseed meal that shells composite modified bacterium synthesizing polyester material prepared by the present embodiment, rate of extension is 10mm/min, test result shows: after the linseed meal that shells is composite modified, the performance of bacterium synthesizing polyester material in tensile strength, elongation at break is significantly improved, and concrete numerical value is in table 1.
Comparative example
A kind of bacterium synthesizing polyester material, prepares by the following method: get 100 parts of poly-(3-hydroxybutyrate ester-co-4-butyric ester) banburyings in Banbury mixer: temperature is 180 DEG C, rotating speed 100rpm (rev/min), 12 minutes time; Poly-(3-hydroxybutyrate ester-co-4-butyric ester) after banburying is carried out hot pressing composite molding in thermocompressor: temperature is 150 DEG C, pressure is 30MPa, the time is 10 minutes; After shaping, at 60 DEG C, vacuum-drying removes moisture in 12 hours, obtains bacterium synthesizing polyester material.The CMT6503 instrument newly thinking carefully testing tool company in Shenzhen according to GB4456-84 carries out Mechanics Performance Testing to the bacterium synthesizing polyester material that comparative example obtains, and rate of extension is 10mm/min, and mechanical property the results are shown in Table 1.
Table 1 shells the mechanical property of linseed meal composite modified bacterium synthesizing polyester material
As can be seen from Table 1, after the linseed meal that shells is composite modified, tensile strength, the elongation at break of poly-(3-hydroxybutyrate ester-co-4-butyric ester) are improved significantly, the intensity of material increases, fragility reduces, toughness increases, effectively expanded the range of application of material, described in the linseed meal composite modified bacterium synthesizing polyester material that shells can be processed as film, sheet material, section bar or container etc. by straight forming, also can be used as wrapping material or engineering plastics etc.Meanwhile, the realization of the linseed meal high-content that shells in the linseed meal that shells composite modified bacterium synthesizing polyester material, can be reduced the cost of material to a great extent, makes it to have better actual application prospect.
Obviously, above-described embodiment is only for the example done clearly is described, and the restriction not to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all embodiments.And therefore amplified apparent change or variation are still within the protection domain of the invention.
Claims (7)
1. shell a linseed meal composite modified bacterium synthesizing polyester material, it is characterized in that, by shelling, linseed meal and biomass-based polyester are composited, described in the shell weight part ratio of linseed meal and biomass-based polyester be 5 ~ 30:100.
2. the linseed meal that shells according to claim 1 composite modified bacterium synthesizing polyester material, is characterized in that, described biomass-based polyester is poly butylene succinate or poly(lactic acid).
3. the linseed meal that shells according to claim 1 composite modified bacterium synthesizing polyester material, it is characterized in that, the described linseed meal that shells is the powder obtained after milling, sieve and clearing up after flex seed peeling, its protein content is not higher than 46wt%, fat content is not higher than 24wt%, and carbohydrate content is not higher than 25wt%.
4. claim 1 ~ 3 arbitrary described in shell the preparation method of linseed meal composite modified bacterium synthesizing polyester material, it is characterized in that, comprise the steps: that (1) takes biomass-based polyester and the linseed meal that shells, after mixing, obtain blend; Blend is placed in banburying in Banbury mixer and obtains solid mixture; (2) be placed in by solid mixture on thermocompressor and carry out hot pressing composite molding, shaping final vacuum drying removing moisture obtains the linseed meal compound modified biomass base polyester material that shells.
5. preparation method according to claim 4, is characterized in that, the processing condition of described banburying are: temperature is 120 ~ 200 DEG C, and rotating speed is 10 ~ 120rpm, and the time is 1 ~ 30 minute.
6. preparation method according to claim 4, is characterized in that, the processing condition of described hot pressing composite molding are: temperature is 120 ~ 160 DEG C, pressure is 10 ~ 60MPa, the time is 1 ~ 15 minute.
7. preparation method according to claim 4, is characterized in that, described vacuum-drying is: vacuum-drying 12 ~ 72 hours under 40 ~ 60 DEG C of conditions.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101760037A (en) * | 2008-12-23 | 2010-06-30 | 金发科技股份有限公司 | Completely degraded plant powder modified thermoplastics composite material and preparation method thereof |
| CN102276870A (en) * | 2011-04-28 | 2011-12-14 | 中国科学院宁波材料技术与工程研究所 | Preparation method of hard composite structure foam sheet material with biodegradable polymer |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101760037A (en) * | 2008-12-23 | 2010-06-30 | 金发科技股份有限公司 | Completely degraded plant powder modified thermoplastics composite material and preparation method thereof |
| CN102276870A (en) * | 2011-04-28 | 2011-12-14 | 中国科学院宁波材料技术与工程研究所 | Preparation method of hard composite structure foam sheet material with biodegradable polymer |
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