KR20160127488A - Biodegradable Complex Compositions For Vegetation mat And Method For Vegetation mat Using the same - Google Patents
Biodegradable Complex Compositions For Vegetation mat And Method For Vegetation mat Using the same Download PDFInfo
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- KR20160127488A KR20160127488A KR1020150058961A KR20150058961A KR20160127488A KR 20160127488 A KR20160127488 A KR 20160127488A KR 1020150058961 A KR1020150058961 A KR 1020150058961A KR 20150058961 A KR20150058961 A KR 20150058961A KR 20160127488 A KR20160127488 A KR 20160127488A
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- vegetation mat
- composite composition
- biodegradable composite
- polyolefin
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
- C08L67/04—Polyesters derived from hydroxycarboxylic acids, e.g. lactones
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- A01G1/005—
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L33/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
- C08L33/04—Homopolymers or copolymers of esters
- C08L33/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, which oxygen atoms are present only as part of the carboxyl radical
- C08L33/08—Homopolymers or copolymers of acrylic acid esters
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
- E02B3/04—Structures or apparatus for, or methods of, protecting banks, coasts, or harbours
- E02B3/12—Revetment of banks, dams, watercourses, or the like, e.g. the sea-floor
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/20—Securing of slopes or inclines
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Organic Chemistry (AREA)
- Polymers & Plastics (AREA)
- Medicinal Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
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- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
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- General Life Sciences & Earth Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
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- Environmental & Geological Engineering (AREA)
- Biological Depolymerization Polymers (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The present invention relates to a biodegradable composite composition for a vegetation mat and a method for preparing a vegetation mat using the biodegradable composite composition. More particularly, the present invention relates to a biodegradable composite composition capable of controlling biodegradation time and a method for producing a vegetation mat using the same.
The biodegradable composite composition for vegetation mat according to the present invention comprises polylactic acid; Polycaprolactone; Functionalized polyolefins; And a non-functionalized polyolefin.
A method for producing a vegetation mat according to the present invention comprises a first step of blending a biodegradable composite composition comprising polylactic acid, polycaprolactone, a functionalized polyolefin and an unfunctionalized polyolefin; A second step of spinning the combined biodegradation composition to prepare a filament yarn; And a third step of sewing the manufactured filament yarn to produce a mat.
Description
The present invention relates to a biodegradable composite composition for a vegetation mat and a method for preparing a vegetation mat using the biodegradable composite composition. More particularly, the present invention relates to a biodegradable composite composition capable of controlling biodegradation time and a method for producing a vegetation mat using the same.
In general, the moon is generated by cutting and embankment during the construction of the embankment or road, etc., and is vulnerable to wind and flood, which causes safety accidents due to erosion, collapse, and soil loss.
As a result, green spaces are being constructed for the purpose of preventing erosion, collapse, and loss of soil from rivers and slopes, and vegetation mats are used to form vegetation bases for such green areas.
However, since the above-described method is not environmentally friendly, a vegetable mat capable of planting vegetation on the above-mentioned surface has been used in recent years.
The biodegradable resin used as the main material of such an environmentally friendly vegetative mat is most commonly used polyester resin. Such a biodegradable polymer resin has a low melting point due to its chemical structure and has difficulty in diversifying applications due to poor processability.
For example, in the case of a vegetable mat using polylactic acid (PLA) used in the prior art, the processability is remarkably reduced due to a decrease in elongation and the like, so that it is difficult to promote commercialization of the vegetation mat.
An object of the present invention is to provide a vegetable mat which is capable of controlling biodegradability and improved impact strength by using a biodegradable composite composition capable of controlling decomposition rate.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are not restrictive of the invention as set forth in the accompanying drawings. It will be possible.
The biodegradable composite composition for vegetation mat according to the present invention comprises polylactic acid; Polycaprolactone; Functionalized polyolefins; And a non-functionalized polyolefin.
A method for producing a vegetation mat according to the present invention comprises a first step of blending a biodegradable composite composition comprising polylactic acid, polycaprolactone, a functionalized polyolefin and an unfunctionalized polyolefin; A second step of spinning the combined biodegradation composition to prepare a filament yarn; And a third step of sewing the manufactured filament yarn to produce a mat.
The biodegradable composite composition for a vegetation mat of the present invention and the method for producing a vegetation mat using the vegetation mat according to the present invention have the effect of delaying the biodegradation rate and prolonging the biodegradation time and providing the vegetation mat with improved impact strength .
1 is a view showing a second step of a method for producing a vegetation mat according to an embodiment of the present invention.
FIG. 2 is a view showing a third step of a method of manufacturing a vegetative mat according to an embodiment of the present invention.
3 is a view showing a vegetation mat according to the first embodiment of the method for producing a vegetation mat of the present invention.
4 is a view showing a vegetation mat according to a first comparative example in the method for producing a vegetation mat of the present invention.
5 is a view showing a vegetation mat according to a second comparative example in the method for producing a vegetation mat of the present invention.
FIG. 6 is a cross-sectional view of a vegetation mat manufactured by the method of manufacturing a vegetation mat according to an embodiment of the present invention.
The above and other objects, features and advantages of the present invention will be more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which: FIG. BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention and the manner of achieving them will become apparent by reference to an embodiment which will be described in detail below with reference to the accompanying drawings.
The biodegradable composite composition for a vegetation mat according to the present invention comprises polylactic acid, polycaprolactone, functionalized polyolefin and non-functionalized polyolefin.
First, the biodegradable composite composition for a vegetation mat of the present invention comprises a biodegradable polymer, polylactic acid. The polylactic acid is an eco-friendly resin, and has been extensively studied in materials engineering by adding additives that are not harmful to the human body or as a resin, and it is widely used as a carrier in medicine field and tissue engineering.
The polylactic acid preferably has a number average molecular weight of 150,000 to 300,000 and a weight average molecular weight of 100,000 to 200,000.
Next, the biodegradable composite composition for vegetation mat of the present invention comprises polycaprolactone. The polycaprolactone is highly hydrophobic due to its large number of carbon atoms in the structure, and is very slow in decomposition, low in crystallinity, and weak in strength but very flexible.
Therefore, due to the addition of the polycaprolactone having the above-mentioned flexible structure, the vegetative mat of the present invention can obtain the effect of improving the workability and the impact strength, and the degradation rate can be lowered to control the biodegradation rate.
The number-average molecular weight of the polycaprolactone is preferably 35,000 to 80,000.
Next, the biodegradable composite composition for a vegetation mat of the present invention comprises a functionalized polyolefin. The functionalized polyolefin may be at least one functionalized polyolefin containing either an alpha -olefin unit, an epoxide, a carboxylic acid, or a carboxylic acid anhydride unit.
The functionalized polyolefin acts as an admixture or nucleation component between the polylactic acid and the polycaprolactone to improve the thermomechanical properties of the polylactic acid.
Specific examples of the polymer group and the polymer which can be used as the functionalized polyolefin (A) are as follows.
(A1) SBS, SIS, SEBS block copolymer grafted with (a1), (a2), (a3)
(a1) unsaturated epoxide, glycidyl (meth) acrylate
(a2) carboxylic acid, (meth) acrylic acid
(a3) an anhydride of unsaturated carboxylic acid, maleic anhydride
(A2) vinyl esters of ethylene / unsaturated epoxide copolymers, esters, unsaturated carboxylic acids or saturated carboxylic acids
: Ethylene / vinyl acetate / glycidyl (meth) acrylate terpolymer,
Ethylene / alkyl (meth) acrylate / glycidyl (meth) acrylate terpolymer
(A3) an ethylene / unsaturated carboxylic acid anhydride copolymer, an ester that can be neutralized with a metal or an alkali metal, an unsaturated carboxylic acid, a vinyl ester of a saturated carboxylic acid
: Ethylene / vinyl acetate / maleic anhydride terpolymer,
Ethylene / alkyl (meth) acrylate / maleic anhydride terpolymers,
Ethylene / Zn or Li (meth) acrylate / maleic anhydride terpolymer
(A4) polyethylenes, polypropylenes, ethylene / propylene copolymers condensed with unsaturated carboxylic acid anhydrides and grafted or copolymerized monoaminated polyamides
The (meth) acrylate may be selected from among methyl acrylate, ethyl acrylate, n-butyl acrylate, isobutyl acrylate, 2-ethylhexyl acrylate, cyclohexyl acrylate, methyl methacrylate and ethyl methacrylate .
In the present invention, it is most preferred that the functionalized polyolefin polymer is at least one of an ethylene / acrylic acid ester / maleic anhydride terpolymer, ethylene / methacrylate / glycidyl methacrylate terpolymer.
Next, the biodegradable composite composition for a vegetation mat of the present invention comprises an unfunctionalized polyolefin. The non-functionalized polyolefin is a polymer containing ethylene, propylene, 1-butene units, or any? -Olefin.
The non-functionalized polyolefin can be combined with the functionalized polyolefin to improve the impact strength of the composition and to have similar viscosity without mixing the thermoplastic polymer.
Specific examples of the polymer group and the polymer which can be used as the non-functionalized polyolefin (B) are as follows.
(B1) Polyethylene
: LDPE, HDPE, LLDPE, VLDPE, polypropylene, ethylene / propylene copolymer, metallocene polyethylene
(B2) a copolymer of ethylene with at least one compound selected from a salt or ester of an unsaturated carboxylic acid, a vinyl ester of a saturated carboxylic acid
: Ethylene / vinyl acetate copolymer,
Ethylene / alkyl (meth) acrylate copolymers
In the present invention, the non-functionalized polyolefin polymer is an ethylene / acrylic acid ester copolymer, and the acrylic acid ester is most preferably at least one of methyl acrylate, ethyl acrylate and butyl acrylate.
The composition ratio of the biodegradable composite for vegetation mat of the present invention is most preferably 55 to 85% by weight of the polylactic acid, 5 to 30% by weight of the polycaprolactone, 1 to 20% by weight of the functionalized polyolefin and the non-functionalized polyolefin Do.
When the content of the polycaprolactone is less than 5% by weight, a problem of elasticity deteriorates and it tends to be broken. When the content of the polycaprolactone is more than 30% by weight, the polycaprolactone is excessively retreated.
If the functionalized polyolefin and polyolefin are contained in an amount of less than 1% by weight, improvement in thermomechanical characteristics and impact strength may not be exhibited. If the functional polyolefin and polyolefin are contained in an amount of more than 20% by weight, the content of polylactic acid is lowered, May occur.
The biodegradable composite composition for a vegetation mat of the present invention may further comprise a first additive.
The first additive may include at least one of a coloring dye, a pigment, a blue coloring agent, an antioxidant, and a UV stabilizer. The types and mixing ratios of the first additive can be variously changed according to the application.
In addition, the biodegradable composite composition for a vegetation mat of the present invention may further comprise a second additive.
The second additive may include at least one of fibers, flame retardants, and plasticizers. The type and the mixing ratio of the second additive can be variously changed according to the application.
When the plasticizer is added, the mechanical properties are improved and the composition softens.
As the plasticizer, monomers such as PEG and TMC may be used.
Hereinafter, a method for producing a vegetation mat using the biodegradable composite composition will be described in detail.
First, in the first step, a biodegradable composite composition comprising polylactic acid, polycaprolactone, functionalized polyolefin and non-functionalized polyolefin is blended. Specifically, the biodegradable composite composition is blended to prepare a composition for a vegetation mat.
Next, in the second step, the composite composition for biodegradation as described above is spun to produce a filament yarn. Specifically, as shown in Fig. 1, a filament yarn is produced through heating, spinning, cooling, and winding using a spinning line.
Next, in the third step, the produced filament yarn is sewed to produce a mat. Specifically, as shown in Fig. 2, the produced filament yarn is sewn and wound using a sewing line to produce a vegetation mat as shown in Fig.
In the following, the experimental contents after the specimens of Examples and Comparative Examples were produced using the biodegradable composite composition of the present invention will be described in detail.
- Psalm making
(1) The specimen is dried at 60 ° C for 2 hours or more before pressing to remove moisture in the material. Then, a 35 m diameter extruder temperature is set to 190 to 220 캜, a screw speed is set to 200 to 230 rpm, and a biodegradable composite is pressed by injecting a material. The injection rate of the material at the time of pressing is 45 rpm.
(2) Press-molded biodegradation composite is extrusion-molded or injection molded at 190 to 210 DEG C for 80 to 160 seconds.
(3) The molded specimens are stored in a dryer set at 25 ° C for 1 day, and the properties are measured.
[Example 1]
Example 1 is a specimen prepared from 55 to 85% by weight of polylactic acid, 5 to 30% by weight of polycaprolactone, 1 to 20% by weight of functionalized polyolefin and non-functionalized polyolefin as the composition of the present invention.
[Comparative Example 1]
Comparative Example 1 is a specimen prepared from 55 to 85 wt% of polylactic acid, 5 to 30 wt% of thermoplastic polyurethane, and 1 to 20 wt% of other additives.
[Comparative Example 2]
Comparative Example 2 is a specimen prepared from 30 to 80% by weight of polylactic acid and 20 to 70% by weight of PBAT.
[Comparative Example 3]
Comparative Example 3 is a specimen prepared from 30 to 80% by weight of polylactic acid, 10 to 70% by weight of PBAT, 10 to 70% by weight of PBS, and other additives.
A. Biodegradability test
The biodegradability test was carried out using the above Example 1 and Comparative Examples 1 to 4, and the results are shown in Table 1 below.
As shown in Table 1, it can be seen that the decomposition rate of Example 1 is lower than that of Comparative Examples 1 to 3. Therefore, it can be confirmed that the biodegradability of the vegetation mat can be controlled by controlling the composition ratio using the composition of Example 1. [
N. Impact strength test
The impact strength test was carried out using the above Example 1 and Comparative Examples 1 and 2. Physical properties of the specimens were measured according to ASTM D638 and the tensile speed was 500 mm / min. The results are shown in Figs. 3 to 5.
3 is a view showing a vegetation mat according to the first embodiment of the method for producing a vegetation mat of the present invention.
4 is a view showing a vegetation mat according to a first comparative example in the method for producing a vegetation mat of the present invention.
5 is a view showing a vegetation mat according to a second comparative example in the method for producing a vegetation mat of the present invention.
As shown in FIGS. 3 to 5, in Example 1, the fabric was uniformly pulled out and kept at a constant interval, whereas Comparative Example 1 was very low in flowability and was formed to be thin and thick without inconsistency. Also, the cooling rate during the cooling process during the production of the mat is too fast, which causes problems in moldability. In the case of Comparative Example 2, the thickness of the fabric was formed stably, but the bonding property between the raw materials was insufficient and the impact strength was remarkably low, causing a problem of being broken during roll forming.
Therefore, it can be confirmed that the composition and mixing ratio of the vegetation mat composition of the present invention is most preferably similar to that of the first embodiment.
Claims (5)
Polycaprolactone;
Functionalized polyolefins; And
A biodegradable composite composition for vegetation mat characterized by comprising a non-functionalized polyolefin
The functionalized polyolefin is a polyolefin,
Ethylene / acrylic ester / maleic anhydride terpolymer,
Ethylene / methyl acrylate / glycidyl methacrylate terpolymer
The biodegradable composite composition for a vegetation mat according to claim 1,
The functionalized polyolefin is a polyolefin,
Ethylene / acrylic acid ester copolymer,
Wherein the acrylic acid ester is at least one of methyl acrylate, ethyl acrylate, and butyl acrylate. The biodegradable composite composition for vegetation mat
The mixing ratio of the biodegradable composite composition for a vegetation mat may be,
Wherein the biodegradable composite composition for vegetation mat comprises 55 to 85% by weight of polylactic acid, 5 to 30% by weight of polycaprolactone, 1 to 20% by weight of functionalized polyolefin and unfunctionalized polyolefin
A second step of spinning the combined biodegradation composition to prepare a filament yarn;
And a third step of sewing the prepared filament yarn to produce a mat.
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| Application Number | Priority Date | Filing Date | Title |
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| KR1020150058961A KR20160127488A (en) | 2015-04-27 | 2015-04-27 | Biodegradable Complex Compositions For Vegetation mat And Method For Vegetation mat Using the same |
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| Application Number | Priority Date | Filing Date | Title |
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| KR1020150058961A KR20160127488A (en) | 2015-04-27 | 2015-04-27 | Biodegradable Complex Compositions For Vegetation mat And Method For Vegetation mat Using the same |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102481668B1 (en) * | 2022-07-27 | 2022-12-27 | 임태동 | Bio-based plastic manufacturing method with polymer alloy between starch and polymer among natural polymers |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100698808B1 (en) | 2004-12-16 | 2007-03-23 | 맹용일 | The vegetation mat for shore and slope protection, and the construction method of this |
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2015
- 2015-04-27 KR KR1020150058961A patent/KR20160127488A/en not_active Application Discontinuation
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100698808B1 (en) | 2004-12-16 | 2007-03-23 | 맹용일 | The vegetation mat for shore and slope protection, and the construction method of this |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102481668B1 (en) * | 2022-07-27 | 2022-12-27 | 임태동 | Bio-based plastic manufacturing method with polymer alloy between starch and polymer among natural polymers |
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