JPH04146952A - Biodegradable plastic molding - Google Patents
Biodegradable plastic moldingInfo
- Publication number
- JPH04146952A JPH04146952A JP2271710A JP27171090A JPH04146952A JP H04146952 A JPH04146952 A JP H04146952A JP 2271710 A JP2271710 A JP 2271710A JP 27171090 A JP27171090 A JP 27171090A JP H04146952 A JPH04146952 A JP H04146952A
- Authority
- JP
- Japan
- Prior art keywords
- calcium carbonate
- molding
- starch
- weight
- magnesium carbonate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 229920000704 biodegradable plastic Polymers 0.000 title 1
- 238000010137 moulding (plastic) Methods 0.000 title 1
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims abstract description 37
- 229920002472 Starch Polymers 0.000 claims abstract description 21
- 235000019698 starch Nutrition 0.000 claims abstract description 21
- 239000008107 starch Substances 0.000 claims abstract description 20
- 229910000019 calcium carbonate Inorganic materials 0.000 claims abstract description 19
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 claims abstract description 16
- 229910000021 magnesium carbonate Inorganic materials 0.000 claims abstract description 16
- 239000001095 magnesium carbonate Substances 0.000 claims abstract description 16
- 229920003232 aliphatic polyester Polymers 0.000 claims abstract description 14
- 229920006238 degradable plastic Polymers 0.000 claims description 4
- 238000000465 moulding Methods 0.000 abstract description 9
- -1 polyethylene adipate Polymers 0.000 abstract description 6
- 229920000331 Polyhydroxybutyrate Polymers 0.000 abstract description 3
- 238000001746 injection moulding Methods 0.000 abstract description 3
- 239000005015 poly(hydroxybutyrate) Substances 0.000 abstract description 3
- 229920000921 polyethylene adipate Polymers 0.000 abstract description 3
- 238000001125 extrusion Methods 0.000 abstract description 2
- 238000013329 compounding Methods 0.000 abstract 1
- 229920001610 polycaprolactone Polymers 0.000 description 14
- 239000004632 polycaprolactone Substances 0.000 description 14
- 239000002689 soil Substances 0.000 description 11
- 239000000203 mixture Substances 0.000 description 10
- 239000000047 product Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 6
- 238000002156 mixing Methods 0.000 description 6
- 241000196324 Embryophyta Species 0.000 description 5
- 238000006065 biodegradation reaction Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000000813 microbial effect Effects 0.000 description 5
- 244000005700 microbiome Species 0.000 description 5
- 229920002261 Corn starch Polymers 0.000 description 4
- 239000008120 corn starch Substances 0.000 description 4
- 229940099112 cornstarch Drugs 0.000 description 4
- 239000003337 fertilizer Substances 0.000 description 4
- 229920003023 plastic Polymers 0.000 description 4
- 239000004033 plastic Substances 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 102000004190 Enzymes Human genes 0.000 description 3
- 108090000790 Enzymes Proteins 0.000 description 3
- 238000003916 acid precipitation Methods 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000006866 deterioration Effects 0.000 description 3
- 239000006185 dispersion Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 230000000704 physical effect Effects 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 2
- 102000004882 Lipase Human genes 0.000 description 2
- 108090001060 Lipase Proteins 0.000 description 2
- 239000004367 Lipase Substances 0.000 description 2
- 229910002651 NO3 Inorganic materials 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 150000007513 acids Chemical class 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 238000006911 enzymatic reaction Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 235000019421 lipase Nutrition 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 239000004094 surface-active agent Substances 0.000 description 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 241000512259 Ascophyllum nodosum Species 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- UDSFAEKRVUSQDD-UHFFFAOYSA-N Dimethyl adipate Chemical compound COC(=O)CCCCC(=O)OC UDSFAEKRVUSQDD-UHFFFAOYSA-N 0.000 description 1
- 240000003183 Manihot esculenta Species 0.000 description 1
- 235000016735 Manihot esculenta subsp esculenta Nutrition 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- 229920000881 Modified starch Polymers 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 241000282806 Rhinoceros Species 0.000 description 1
- 244000061456 Solanum tuberosum Species 0.000 description 1
- 235000002595 Solanum tuberosum Nutrition 0.000 description 1
- MKRNVBXERAPZOP-UHFFFAOYSA-N Starch acetate Chemical compound O1C(CO)C(OC)C(O)C(O)C1OCC1C(OC2C(C(O)C(OC)C(CO)O2)OC(C)=O)C(O)C(O)C(OC2C(OC(C)C(O)C2O)CO)O1 MKRNVBXERAPZOP-UHFFFAOYSA-N 0.000 description 1
- 241000209140 Triticum Species 0.000 description 1
- 235000021307 Triticum Nutrition 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- 240000008042 Zea mays Species 0.000 description 1
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 description 1
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 150000001252 acrylic acid derivatives Chemical class 0.000 description 1
- 239000003570 air Substances 0.000 description 1
- 125000002723 alicyclic group Chemical group 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000000071 blow moulding Methods 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 235000005822 corn Nutrition 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 230000007071 enzymatic hydrolysis Effects 0.000 description 1
- 238000006047 enzymatic hydrolysis reaction Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 238000010097 foam moulding Methods 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 238000002074 melt spinning Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 235000019426 modified starch Nutrition 0.000 description 1
- 230000003472 neutralizing effect Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000020477 pH reduction Effects 0.000 description 1
- 235000012015 potatoes Nutrition 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000011541 reaction mixture Substances 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
Landscapes
- Cultivation Receptacles Or Flower-Pots, Or Pots For Seedlings (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Biological Depolymerization Polymers (AREA)
Abstract
Description
【発明の詳細な説明】
（技術分野）
本発明は土中において微生物分解するプラスチック成形
品に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Technical Field) The present invention relates to a plastic molded article that is decomposed by microorganisms in soil.
（従来技術及びその問題点）
従来、土中において微生物分解性を示すプラスチックは
種々知られている。これらのプラスチックのうち、脂肪
族ポリエステルは微生物分解性において比較的すぐれた
ものであるが、−船釣に高価である上、それらの内比較
的安価なものは柔軟で機械的強度に劣るという問題を含
む。(Prior Art and its Problems) Various plastics that are decomposable by microorganisms in soil have been known. Among these plastics, aliphatic polyesters have relatively good microbial degradability, but they are expensive for boat fishing, and the relatively inexpensive ones are flexible and have poor mechanical strength. including.
（発明の課題）
本発明は、生分解性の良好な脂肪族ポリエステルを用い
、これらから機械的強度及び微生物分解性にすぐれた安
価なプラスチック成形品を提供することをその課題とす
る。(Problem of the Invention) An object of the present invention is to provide an inexpensive plastic molded article with excellent mechanical strength and microbial degradability using aliphatic polyester with good biodegradability.
（課題を解決するための手段〕
本発明者らは前記課題を解決すべく鋭意研究した結果、
本発明を完成するに至った。(Means for Solving the Problems) As a result of the inventors' intensive research to solve the above problems,
The present invention has now been completed.
即ち、本発明によれば、生分解性脂肪族ポリエステル３
０−６０重量％と、炭酸カルシウム及び／又は炭酸マグ
ネシウム４０〜フ０重量％からなる微生物分解性プラス
チック成形品が提供される。That is, according to the present invention, biodegradable aliphatic polyester 3
A microbially degradable plastic molded article comprising 0 to 60% by weight of calcium carbonate and/or magnesium carbonate and 40 to 0% by weight of calcium carbonate and/or magnesium carbonate is provided.
また、本発明によれば、生分解性脂肪族ポリエステル５
０−７０重量％と、炭酸カルシウム及び／又は炭酸マグ
ネシウム２０−４０重量％と、澱粉１０〜３０重量５か
らなる微生物分解性プラスチック成形品が提供される。Further, according to the present invention, biodegradable aliphatic polyester 5
A microbially degradable plastic molded article comprising 0-70% by weight of starch, 20-40% by weight of calcium carbonate and/or magnesium carbonate, and 10-30% by weight of starch is provided.
本発明における生分解性脂肪族ポリエステルとしては、
ポリヒドロキシブチレート（ＰＨＢ）及びその誘導体、
ポリカプロラクトン（ＰＣＬ）、ポリエチレンアジペー
ト（ＰＥＡ） 、ポリテトラメチレンアジペート等の脂
肪族ポリエステル及びその誘導体、ポリシクロヘキシレ
ンジメチルアジベート等の脂環族ポリエステル及びその
誘導体、熱可塑性樹脂と生分解性を有する脂肪族ポリエ
ステルとの共重合体等があげられる。これらは、単独で
あるいは２種以上の混合物として用いられる。The biodegradable aliphatic polyester in the present invention includes:
polyhydroxybutyrate (PHB) and its derivatives,
Biodegradable with aliphatic polyesters and their derivatives such as polycaprolactone (PCL), polyethylene adipate (PEA), and polytetramethylene adipate, alicyclic polyesters and their derivatives such as polycyclohexylene dimethyl adipate, and thermoplastic resins. Examples include copolymers with aliphatic polyesters. These may be used alone or as a mixture of two or more.
本発明においては、前記脂肪族ポリエステルに対して、
炭酸カルシウム及び／又は炭酸マグネシウムを、必要に
応じ、澱粉とともに配合する。炭酸カルシウム及び炭酸
マグネシウムは、高純度のものである必要はなく、これ
を主成分として含む天然物又は合成物であればよい。澱
粉としては、イモ類、米麦類、コーン類、タピオカ類等
の澱粉含有物からの澱粉の他、澱粉と酢酸ビニルやアク
リル酸、アクリレートとの共重合体等の澱粉誘導体が用
いられる。これらの炭酸カルシウム及び／又は炭酸マグ
ネシウムと、澱粉の粒径は、３０μ■以下、好ましくは
１０μｍ以下である。In the present invention, for the aliphatic polyester,
Calcium carbonate and/or magnesium carbonate are blended with starch as necessary. Calcium carbonate and magnesium carbonate do not need to be of high purity; any natural or synthetic product containing them as a main component may be used. As starch, in addition to starch from starch-containing products such as potatoes, rice, wheat, corn, and tapioca, starch derivatives such as copolymers of starch and vinyl acetate, acrylic acid, and acrylates are used. The particle size of these calcium carbonate and/or magnesium carbonate and starch is 30 μm or less, preferably 10 μm or less.
脂肪族ポリエステルに対する炭酸カルシウム及び／又は
炭酸マグネシウムの配合量は、澱粉を併用しない場合、
４０−７０重量重量％、好ましくは４５−６５重量％で
あり、澱粉を併用する場合、２０−４０重量％。The amount of calcium carbonate and/or magnesium carbonate in the aliphatic polyester is as follows:
40-70% by weight, preferably 45-65% by weight, and 20-40% by weight when used in combination with starch.
好ましくは２５−３５重量％であり、一方、澱粉の配合
量は１０−３０重量％、好ましくは１５〜２５重量％で
ある。Preferably it is 25-35% by weight, while the amount of starch is 10-30% by weight, preferably 15-25% by weight.
本発明の成形品を製造するには、先ず、脂肪族ポリエス
テルに対して、炭酸カルシウム及び／又は炭酸マグネシ
ウム、必要に応じ澱粉を混合分散させる。この混合分散
は、一般に、ニーダ−バンバリー、ミキシングロール等
が用いられるが、空気酸素存在下で配合物をその溶融温
度以上に長時間保持すると、澱粉等の熱分解、焦げが発
生し変質劣化する。持分平１−２９１２６号記載の混合
分散方法を用いれば、高温保持時間を１０〜３０秒と極
めて短時間にする二とができるので、配合物の変質劣化
を防止することができる。また、澱粉類は生分解促進の
目的で、α−化して成形することもできる。In order to produce the molded article of the present invention, first, calcium carbonate and/or magnesium carbonate, and if necessary, starch are mixed and dispersed in the aliphatic polyester. Generally, a kneader-Banbury, mixing roll, etc. are used for this mixing and dispersion, but if the mixture is kept above its melting temperature for a long time in the presence of air and oxygen, starch etc. will be thermally decomposed and scorched, resulting in deterioration and deterioration. . By using the mixing and dispersing method described in Jibu No. 1-29126, the high temperature holding time can be made extremely short, 10 to 30 seconds, so that alteration and deterioration of the blend can be prevented. In addition, starches can also be alpha-ized and molded for the purpose of promoting biodegradation.
次に、この混合分散物を、従来公知の成形方法こよって
所要形状に成形する。この場合の成形方法としては１例
えば、押出し成形、射出成形、ブロー成形、注型加工、
真空成形、溶融紡糸、カレンダー成形の他、発泡成形な
どの各種成形方法が挙げられる。Next, this mixed dispersion is molded into a desired shape using a conventionally known molding method. Molding methods in this case include extrusion molding, injection molding, blow molding, casting,
Various molding methods such as vacuum molding, melt spinning, calendar molding, and foam molding may be used.
なお、上記混合分散、及び成形加工時の溶融混練にさい
して、酸化防止剤、界面活性剤、着色剤等を必要に応じ
て添加してもよい。In addition, during the above-mentioned mixing and dispersion and melt-kneading during molding, antioxidants, surfactants, colorants, etc. may be added as necessary.
（発明の効果）
本発明の成形品は、微生物分解性を有するとともに、多
量の炭酸カルシウム及び／又は炭酸マグネシウムを含む
もので、機械的強度にすぐれ、かつ安価に製造し得るも
のである。また、澱粉を併用した成形品は、その微生物
分解性においてさらに向上し、また澱粉分解物が肥料効
果を与えるという利点がある。(Effects of the Invention) The molded article of the present invention is microbially degradable, contains a large amount of calcium carbonate and/or magnesium carbonate, has excellent mechanical strength, and can be manufactured at low cost. In addition, molded products containing starch have the advantage that their microbial decomposition properties are further improved, and the starch decomposition product provides a fertilizer effect.
本発明の成形品は、フィルム状、シート状、容器状、繊
維状等の各種の形状で使用される。The molded article of the present invention can be used in various shapes such as a film, a sheet, a container, and a fiber.
本発明の成形品は、特に、植林用鉢や、植林用シートと
して好適に使用される。The molded article of the present invention is particularly suitable for use as a planting pot or a planting sheet.
植林用鉢は、樹木や草木類の苗木の育成に用いられた後
、育成した樹木や草木類とともに、土中に埋込むのに使
用されるものである。この植木用鉢は、樹木や草木の成
長を妨げないように、土中において微生物分解性を示す
ことが必要であるが、本発明による成形品はすぐれた微
生物分解性を示すことから、植林用鉢として好適のもの
である。Planting pots are used to grow seedlings of trees and plants, and then are buried in soil together with the grown trees and plants. This flowerpot needs to exhibit microbial degradability in the soil so as not to hinder the growth of trees and plants, but the molded product of the present invention exhibits excellent microbial degradability, so it is suitable for use in afforestation. It is suitable as a pot.
しかも１本発明の成形品は、炭酸カルシウム及び／又は
炭酸マグネシウムを含むことから、硫酸イオン、硝酸イ
オン、塩素イオン等を含むｐＨの低い酸性雨中の酸を中
和する作用があり、苗木の根をその酸性雨から保護する
効果がある。また、澱粉を併用したものでは、その澱粉
は土中において微生物分解し、肥料効果を与えるという
利点がある。Moreover, since the molded article of the present invention contains calcium carbonate and/or magnesium carbonate, it has the effect of neutralizing acids in low-pH acid rain containing sulfate ions, nitrate ions, chloride ions, etc., and protects the roots of seedlings. It has the effect of protecting against acid rain. Moreover, when starch is used in combination, the starch has the advantage of being decomposed by microorganisms in the soil and providing a fertilizer effect.
植林用シートは、苗木を土中に植えるときにその周囲に
敷設するか又は浅く土中に埋設して使用されるもので、
苗木周囲の雑草の育成を防ぐとともに、苗木周囲の土壌
に降りかかる硫酸イオン代硝酸イオン、塩素イオン等を
含むｐＨの低い酸性汀中の酸を中和し、土中の酸性化を
防ぎ、苗木の社をその酸性雨から保護する目的で用いら
れるもにである。本発明の成形品として用いられる植林
用シートは、炭酸カルシウム及び／又は炭酸マグネシウ
ムを含むことから、このような植林用シートとして好適
のものである。また、澱粉を併用したものでは、その澱
粉が土中で微生物分解し、肥料効果を与えるという利点
がある。Planting sheets are used by laying them around seedlings when planting them in the soil, or by burying them shallowly in the soil.
In addition to preventing the growth of weeds around the seedlings, it neutralizes the acids in the low pH acidic soil containing sulfate ions, nitrate ions, chloride ions, etc. that fall on the soil around the seedlings, preventing acidification in the soil, and promoting the growth of seedlings. It is used to protect companies from acid rain. The afforestation sheet used as the molded article of the present invention contains calcium carbonate and/or magnesium carbonate, and is therefore suitable as such an afforestation sheet. Furthermore, when starch is used in combination, the starch has the advantage of being decomposed by microorganisms in the soil and providing a fertilizer effect.
本発明の成形品は、前記した植林用鉢や植林用シートの
他、さらに、農林業用のくいやビン、傾斜地や雇用ネッ
ト、傾斜地や崖への苗木の移植用ネット、コルフチイー
、種子散布用のかごやグヌ、種子のコーティング剤、肥
料用袋、ａ薬用装薬剤の遊離調節基材、屋外で使用する
コンブ、皿スプーン、フォーク等の各種の使い捨て用品
等としても好適のものである。In addition to the above-mentioned afforestation pots and afforestation sheets, the molded products of the present invention are also useful for agriculture and forestry use, such as stakes and bottles, slopes and employment nets, nets for transplanting seedlings to slopes and cliffs, corfuchii, and seed dispersal. It is also suitable for use as baskets, seed coating agents, fertilizer bags, release control substrates for medicinal agents, and various disposable items such as kelp for outdoor use, dish spoons, and forks.
（実施例）
以下、実施例、比較例によって本発明をより詳細に説明
する。(Example) Hereinafter, the present invention will be explained in more detail with reference to Examples and Comparative Examples.
なお、以下の記載における引張弾性率は、ＪＩＳＫ−７
１１３、生分解試験は酵素法に準じて行い、使用したポ
リエステル分解酵素は微生物をはじめ動植物など自然界
に広く存在するリパーゼ等を用いた。In addition, the tensile modulus in the following description is JISK-7
113, the biodegradation test was conducted according to the enzymatic method, and the polyester degrading enzyme used was lipase, etc., which widely exist in nature, including microorganisms, animals, and plants.
酵素法の手順の１例として、厚み０６５ｍｍのポリカプ
ロラクトン（ＰＣＬ）−炭酸カルシウムのブレンド体の
シートの断面をスライスして、その厚み０１ｒｒｌＩ１
１のスライス片（ＰＣＬ含量１０ｔ）ｍｇとする）を試
料とし、反応組成はＰＣＬ分解酵素リゾすプスアリズス
のリパーゼ（シグマ社製）３３．８ｕｎｉｔ、緩衝剤（
ｐＨ＝７．０）０．２Ｍ−ＫＨ２ＰＯ４−ｈ＋ａ２ＨＰ
Ｏ４（和光紬薬社製）２．０ｍｌ、界面活性剤０．〕％
−Ｐｌｙｓｕ＋ ｆ−Ａ２１０Ｇ（第一工業製薬社製＞
０．５ｍｌ、全量を２０．０ｍｌとし３０ ’Ｃ・１６
時間振とうして生分解を行った。反応終了後、反応蔽を
隘２の濾紙で濾過し、その濾液の水溶性全有機炭素量を
測定し、酵素を使用していない系での水溶性全有機炭素
量との差をもって、 ＰＣＬが酵素により加水分解する
ことにより反応組成中に溶出した水溶性ＰＣＬ加水分解
生成物の全炭素量（ＴＯＣ）として、ＰＣＬ及び、ブレ
ンド体の生分解性の指数とした。As an example of the enzymatic method procedure, a cross section of a sheet of polycaprolactone (PCL)-calcium carbonate blend with a thickness of 065 mm is sliced, and its thickness is 01rrlI1.
The sample was a slice of No. 1 (PCL content: 10 t, mg), and the reaction composition was 33.8 units of PCL-degrading enzyme Lysopus alizus lipase (manufactured by Sigma), a buffer (
pH=7.0) 0.2M-KH2PO4-h+a2HP
O4 (manufactured by Wako Tsumugi Pharmaceutical Co., Ltd.) 2.0 ml, surfactant 0. ]%
-Plysu+ f-A210G (manufactured by Daiichi Kogyo Seiyaku Co., Ltd.)
0.5ml, total volume 20.0ml, 30'C・16
Biodegradation was performed by shaking for hours. After the reaction is completed, the reaction mixture is filtered through a filter paper in column 2, and the amount of water-soluble total organic carbon in the filtrate is measured, and the PCL is determined by the difference from the amount of water-soluble total organic carbon in a system that does not use enzymes. The total carbon content (TOC) of the water-soluble PCL hydrolysis product eluted into the reaction composition by enzymatic hydrolysis was used as an index of the biodegradability of PCL and the blend.
原料については、ポリカプロラフトン（Ｉ’ＣＬ）はダ
イヤル化学社製Ｈ−７、コーンスターチは日本食品加工
社製コーンスターチＷ（平均粒子径１６μｍ）、炭酸カ
ルシウムは竹原化学工業社製サンライト−１００（平均
粒子径７．２μＩ！１）を使用した。Regarding the raw materials, polycaprolactone (I'CL) is H-7 manufactured by Dial Kagaku Co., Ltd., cornstarch is Cornstarch W (average particle size 16 μm) manufactured by Nihon Shokuhin Kogyo Co., Ltd., and calcium carbonate is Sunlight-100 (manufactured by Takehara Chemical Industry Co., Ltd.). An average particle size of 7.2 μI!1) was used.
実施例１
高速混合ミキサー（カワタ社製、スーパーミキサー５Ｍ
Ｇ１００を一部変更し、混合槽を２５０℃まで昇温可能
にした。Example 1 High-speed mixing mixer (manufactured by Kawata Co., Ltd., Super Mixer 5M
G100 was partially modified to allow the temperature of the mixing tank to be raised to 250°C.
この槽にＰＣＬｌＯｋｇ、炭酸カルシウム１０ｋｇ投入
し、混合加熱をする。約２０分経過して回転電動機の負
荷が急増した時点で内容物を低回転の冷却タンクに放出
し、回転を継続して空気を吹き付は冷却固化し、粒状の
ブレンド体を得た。10 kg of PCL and 10 kg of calcium carbonate are put into this tank, and mixed and heated. After about 20 minutes, when the load on the rotary motor suddenly increased, the contents were discharged into a cooling tank at low rotation speed, and the contents were cooled and solidified by blowing air while continuing rotation to obtain a granular blend.
上記ブレンド体を東芝機械製押出機５Ｅ−６５（６５ψ
、ベントタイプ）にてシート化し、物性試験及び。The above blend was extruded using a Toshiba Machine extruder 5E-65 (65φ).
, bent type), and subjected to physical property tests and tests.
生分解試験に付した。その結果を表−１に示す。It was subjected to a biodegradation test. The results are shown in Table-1.
また、同ブレンド体を二紀工業社製射出成形機６Ｓ−１
５０にて鉢を製作したところ、目的とする物性の製品が
得られた。In addition, the same blend was molded using an injection molding machine 6S-1 manufactured by Niki Kogyo Co., Ltd.
When a pot was manufactured using 50, a product with the desired physical properties was obtained.
実施例２
ＰＣＬ８ｋｇ、炭酸力ルンウム１２Ｂにした他は、実施
例１と同様に実験を行った。Example 2 An experiment was carried out in the same manner as in Example 1, except that PCL was 8 kg and carbonic acid runium was 12 B.
実施例３
ＰＣＬ］４ｋｇ、炭酸力ルンウム４ｋｇ、コーンスター
チ２ｋｇにした他は、実施例１と同様に実験を行った。Example 3 An experiment was carried out in the same manner as in Example 1, except that the amount of PCL was 4 kg, carbonate was 4 kg, and cornstarch was 2 kg.
実施例４
ＰＣＬｌＯｋｇ、炭酸力ルンウム６ｋｇ、コーンスター
チ４ｋｇにした他は、実施例１と同様に試験した。Example 4 A test was carried out in the same manner as in Example 1, except that 10 kg of PCL, 6 kg of carbonic acid, and 4 kg of corn starch were used.
比較例Ｉ
ＰＣＬ犀独を、東芝機械製押出機５Ｅ−６５（６５ψ月
こでシート化し、物性試験及び生分解試験に付した。Comparative Example I PCL rhinoceros was formed into a sheet using an extruder 5E-65 (65 ψ) manufactured by Toshiba Machine Co., Ltd., and subjected to a physical property test and a biodegradation test.
以上の実験結果を表−１に示す。The above experimental results are shown in Table 1.
Claims (4)
炭酸カルシウム及び／又は炭酸マグネシウム４０−７０
重量％からなる微生物分解性プラスチック成形品。(1) Biodegradable aliphatic polyester 30-60% by weight and calcium carbonate and/or magnesium carbonate 40-70%
Microbially degradable plastic molded product consisting of % by weight.
、炭酸カルシウム及び／又は炭酸マグネシウム２０−４
０重量％と、澱粉１０−３０重量％からなる微生物分解
性プラスチック成形品。(2) 50-70% by weight of biodegradable aliphatic polyester and 20-4% of calcium carbonate and/or magnesium carbonate
Microbially degradable plastic molded product consisting of 0% by weight and 10-30% by weight of starch.
品。(3) The molded article according to claim 1 or 2, wherein the molded article is a pot for planting trees.
成形品。(4) The molded article according to claim 1 or 2, wherein the molded article is a sheet for afforestation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2271710A JPH0737560B2 (en) | 1990-10-09 | 1990-10-09 | Biodegradable plastic moldings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2271710A JPH0737560B2 (en) | 1990-10-09 | 1990-10-09 | Biodegradable plastic moldings |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04146952A true JPH04146952A (en) | 1992-05-20 |
| JPH0737560B2 JPH0737560B2 (en) | 1995-04-26 |
Family
ID=17503763
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2271710A Expired - Lifetime JPH0737560B2 (en) | 1990-10-09 | 1990-10-09 | Biodegradable plastic moldings |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0737560B2 (en) |
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|---|---|---|---|---|
| JPH0570696A (en) * | 1991-09-12 | 1993-03-23 | Toppan Printing Co Ltd | Container made of plastic |
| JPH05238359A (en) * | 1992-02-27 | 1993-09-17 | Daifuku Co Ltd | Car washer |
| JPH05253237A (en) * | 1992-03-12 | 1993-10-05 | Olympus Optical Co Ltd | Observation assisting forceps |
| JPH0591294U (en) * | 1992-05-19 | 1993-12-14 | 勝造商事株式会社 | Garden pot |
| JPH0613447U (en) * | 1992-07-30 | 1994-02-22 | 川崎鉄網株式会社 | Container for planting seedlings and fence for slope greening |
| JPH0649276A (en) * | 1991-10-04 | 1994-02-22 | Agency Of Ind Science & Technol | Biodegradable plastic composition containing gelatinized starch and its production |
| WO1994011440A2 (en) * | 1992-11-06 | 1994-05-26 | Zeneca Limited | Polymer composition containing polyhydroxyalkanoate and metal compound |
| JPH06172621A (en) * | 1992-05-13 | 1994-06-21 | Showa Highpolymer Co Ltd | Polyester resin composition |
| JPH06276862A (en) * | 1993-03-31 | 1994-10-04 | Yuushin Seiki:Kk | Pot |
| JPH07268194A (en) * | 1994-02-08 | 1995-10-17 | Tokuyama Corp | Aliphatic poly(beta-hydroxycarboxylic acid) composition |
| US5464689A (en) * | 1993-06-15 | 1995-11-07 | Uni-Charm Corporation | Resin composition, porous film produced therefrom and process for producing same |
| JPH09294482A (en) * | 1996-05-07 | 1997-11-18 | Nippon Shokuhin Kako Co Ltd | Biodegradable pot for raising seedling |
| US5744516A (en) * | 1993-09-14 | 1998-04-28 | Fujitsu Limited | Biodegradable resin molded article |
| JP2001323176A (en) * | 2000-05-16 | 2001-11-20 | Maruzen Polymer Kk | Composition for mulching film and mulching film |
| JP2003013951A (en) * | 2001-06-26 | 2003-01-15 | Nsk Ltd | Provisional shaft of slider for linear guide bearing unit |
| JP2003138148A (en) * | 1993-09-14 | 2003-05-14 | Fujitsu Ltd | Biodegradable plastic molded article |
| EP2258761A1 (en) | 2001-07-09 | 2010-12-08 | Sony Corporation | Polyester molding for use with a casing |
| US20120266536A1 (en) * | 2007-07-25 | 2012-10-25 | Ball Horticultural Company | Bottomless plant container |
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1990
- 1990-10-09 JP JP2271710A patent/JPH0737560B2/en not_active Expired - Lifetime
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|---|---|---|---|---|
| JPH0570696A (en) * | 1991-09-12 | 1993-03-23 | Toppan Printing Co Ltd | Container made of plastic |
| JPH0649276A (en) * | 1991-10-04 | 1994-02-22 | Agency Of Ind Science & Technol | Biodegradable plastic composition containing gelatinized starch and its production |
| JPH05238359A (en) * | 1992-02-27 | 1993-09-17 | Daifuku Co Ltd | Car washer |
| JPH05253237A (en) * | 1992-03-12 | 1993-10-05 | Olympus Optical Co Ltd | Observation assisting forceps |
| JPH06172621A (en) * | 1992-05-13 | 1994-06-21 | Showa Highpolymer Co Ltd | Polyester resin composition |
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| JPH0613447U (en) * | 1992-07-30 | 1994-02-22 | 川崎鉄網株式会社 | Container for planting seedlings and fence for slope greening |
| WO1994011440A2 (en) * | 1992-11-06 | 1994-05-26 | Zeneca Limited | Polymer composition containing polyhydroxyalkanoate and metal compound |
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| JPH06276862A (en) * | 1993-03-31 | 1994-10-04 | Yuushin Seiki:Kk | Pot |
| US5464689A (en) * | 1993-06-15 | 1995-11-07 | Uni-Charm Corporation | Resin composition, porous film produced therefrom and process for producing same |
| JP2003138148A (en) * | 1993-09-14 | 2003-05-14 | Fujitsu Ltd | Biodegradable plastic molded article |
| US5744516A (en) * | 1993-09-14 | 1998-04-28 | Fujitsu Limited | Biodegradable resin molded article |
| JPH07268194A (en) * | 1994-02-08 | 1995-10-17 | Tokuyama Corp | Aliphatic poly(beta-hydroxycarboxylic acid) composition |
| JPH09294482A (en) * | 1996-05-07 | 1997-11-18 | Nippon Shokuhin Kako Co Ltd | Biodegradable pot for raising seedling |
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| US20120266536A1 (en) * | 2007-07-25 | 2012-10-25 | Ball Horticultural Company | Bottomless plant container |
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| CN105462203A (en) * | 2015-12-23 | 2016-04-06 | 江苏道勤新材料科技有限公司 | PHB based degradable 3D printing material |
| JP2018083946A (en) * | 2016-11-24 | 2018-05-31 | 喬福材料科技股▲ふん▼有限公司Ｃｈｉａｏ Ｆｕ Ｍａｔｅｒｉａｌ Ｔｅｃｈｎｏｌｏｇｙ Ｃｏ．，Ｌｔｄ． | Biodegradable film material and method for producing the same |
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Also Published As
| Publication number | Publication date |
|---|---|
| JPH0737560B2 (en) | 1995-04-26 |
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