JP6777343B2 - 樹脂成型体の分解処理方法及び分解性樹脂製品 - Google Patents
樹脂成型体の分解処理方法及び分解性樹脂製品 Download PDFInfo
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- JP6777343B2 JP6777343B2 JP2019520768A JP2019520768A JP6777343B2 JP 6777343 B2 JP6777343 B2 JP 6777343B2 JP 2019520768 A JP2019520768 A JP 2019520768A JP 2019520768 A JP2019520768 A JP 2019520768A JP 6777343 B2 JP6777343 B2 JP 6777343B2
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- 229910052720 vanadium Inorganic materials 0.000 description 1
- GPPXJZIENCGNKB-UHFFFAOYSA-N vanadium Chemical compound [V]#[V] GPPXJZIENCGNKB-UHFFFAOYSA-N 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J11/00—Recovery or working-up of waste materials
- C08J11/04—Recovery or working-up of waste materials of polymers
- C08J11/10—Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation
- C08J11/18—Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation by treatment with organic material
- C08J11/22—Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation by treatment with organic material by treatment with organic oxygen-containing compounds
- C08J11/26—Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation by treatment with organic material by treatment with organic oxygen-containing compounds containing carboxylic acid groups, their anhydrides or esters
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B5/00—Operations not covered by a single other subclass or by a single other group in this subclass
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/12—Chemical modification
- C08J7/14—Chemical modification with acids, their salts or anhydrides
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/04—Homopolymers or copolymers of ethene
- C08J2323/06—Polyethene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2403/00—Characterised by the use of starch, amylose or amylopectin or of their derivatives or degradation products
- C08J2403/02—Starch; Degradation products thereof, e.g. dextrin
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Health & Medical Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Environmental & Geological Engineering (AREA)
- Engineering & Computer Science (AREA)
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
- Treatments Of Macromolecular Shaped Articles (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Biological Depolymerization Polymers (AREA)
Description
ステップ1:太陽光(紫外線)、熱、酸素、又は水等をエネルギー元とし、金属元素の触媒効果により生成した脂肪酸のラジカル成分が樹脂成型体を構成する樹脂の炭素−炭素結合を酸化分解する。これにより、樹脂成型体の物性(強度、伸び)や分子量が低下することになる。
ステップ2:ステップ1において形成された酸化低分子化物(例えば、カルボン酸、アルコール類)は、土中やコンポスト環境中の微生物により消化吸収される。最終的には、バイオマスとして微生物の体内に蓄えられると共に、呼吸等の代謝活動により二酸化炭素や水に変化する(微生物分解)。
本発明に係る樹脂成型体の分解処理方法による分解効果を検証するため以下に示す試験を行った。
(1)分解処理液塗布後の樹脂成型体の外観観察及び力学特性試験
シェルストーンMB80(株式会社バイオポリ上越製:CaCo3成分80重量%、LLDPE(直鎖状低密度ポリエチレン)コンパウンド)、既存デンプンバイオマス樹脂(米デンプン率70重量%)及び成形用希釈LLDPEを任意の割合でブレンドし、インフレーション成形により得られた樹脂成型体としてのフィルムに対し、脂肪酸金属塩として、(A)オレイン酸マンガン(30〜40重量%)、(B)オレイン酸セリウム(10〜20重量%)を含むオレイン酸液を流動パラフィンで各脂肪酸金属塩の終濃度が約5.5重量%となるように希釈した分解処理液をフィルム表面に塗布した後、遮光、80℃に維持した恒温乾燥機内に静置して経時変化における、フィルム外観並びに力学特性(引張強度及び引張伸び)を観察した。図1(a)は、観察用の枠付サンプルシートを表し、図1(b)は分解処理液が塗布された力学特性試験片セットを表している。なお、図1(a)において、図中左側枠内のみに分解処理液が塗布されており、図中右側枠内には分解処理液は塗布されていない。
上記試験(1)と同様に、脂肪酸金属塩として、(A)オレイン酸マンガン(30〜40重量%)、(B)オレイン酸セリウム(10〜20重量%)を含むオレイン酸液を流動パラフィンで各脂肪酸金属塩の終濃度が約5.5重量%となるように希釈した分解処理液を塗布したHDPE(高密度ポリエチレン)及びLDPE(低密度ポリエチレン)フィルムのそれぞれを実際の土壌雰囲気下で展張し、当該ポリエチレンフィルムの分解がなされるか否かを確認した。
Claims (6)
- 熱可塑性樹脂を主原料とする樹脂成型体を分解処理する際に、酸化数が異なる複数の脂肪酸金属塩としてオレイン酸マンガン及びオレイン酸セリウムを含む分解処理液を塗布、散布、噴霧、又は浸漬の何れかの手法により付着させることで樹脂成型体を分解処理することを特徴とする樹脂成型体の分解処理方法。
- 前記分解処理液を炭化水素油で希釈し、塗布、散布、噴霧、又は浸漬の何れかの手法により付着させることで樹脂成型体を分解処理することを特徴とする請求項1記載の樹脂成型体の分解処理方法。
- 前記熱可塑性樹脂はポリオレフィン系樹脂であることを特徴とする請求項1記載の樹脂成型体の分解処理方法。
- 前記樹脂成型体は前記分解処理液の成分を含むことを特徴とする請求項1記載の樹脂成型体の分解処理方法。
- 前記樹脂成型体についての分解処理は、樹脂の炭素−炭素結合を酸化分解と微生物分解の2段階からなることを特徴とする請求項1記載の樹脂成型体の分解処理方法。
- 熱可塑性樹脂を主原料とする樹脂成型体に、酸化数が異なる複数の脂肪酸金属塩としてオレイン酸マンガン及びオレイン酸セリウムを含む分解処理液を塗布、散布、噴霧、又は浸漬の何れかの手法により付着させたことを特徴とする分解性樹脂製品。
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