JP5207274B2 - 生分解性樹脂組成物 - Google Patents
生分解性樹脂組成物 Download PDFInfo
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- JP5207274B2 JP5207274B2 JP2007267934A JP2007267934A JP5207274B2 JP 5207274 B2 JP5207274 B2 JP 5207274B2 JP 2007267934 A JP2007267934 A JP 2007267934A JP 2007267934 A JP2007267934 A JP 2007267934A JP 5207274 B2 JP5207274 B2 JP 5207274B2
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- hydroxybutyrate
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- 229920006167 biodegradable resin Polymers 0.000 title claims description 25
- 239000011342 resin composition Substances 0.000 title claims description 24
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- 229920000642 polymer Polymers 0.000 claims description 30
- WHBMMWSBFZVSSR-UHFFFAOYSA-N R3HBA Natural products CC(O)CC(O)=O WHBMMWSBFZVSSR-UHFFFAOYSA-N 0.000 claims description 29
- WHBMMWSBFZVSSR-UHFFFAOYSA-M 3-hydroxybutyrate Chemical compound CC(O)CC([O-])=O WHBMMWSBFZVSSR-UHFFFAOYSA-M 0.000 claims description 24
- 239000005014 poly(hydroxyalkanoate) Substances 0.000 claims description 24
- 229920000903 polyhydroxyalkanoate Polymers 0.000 claims description 24
- HPMGFDVTYHWBAG-UHFFFAOYSA-N 3-hydroxyhexanoic acid Chemical compound CCCC(O)CC(O)=O HPMGFDVTYHWBAG-UHFFFAOYSA-N 0.000 claims description 19
- 229910052582 BN Inorganic materials 0.000 claims description 19
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 claims description 19
- 238000002844 melting Methods 0.000 claims description 17
- 230000008018 melting Effects 0.000 claims description 17
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- 229920000070 poly-3-hydroxybutyrate Polymers 0.000 claims description 8
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- 230000008025 crystallization Effects 0.000 description 30
- 239000002667 nucleating agent Substances 0.000 description 24
- 238000000034 method Methods 0.000 description 21
- REKYPYSUBKSCAT-UHFFFAOYSA-N 3-hydroxypentanoic acid Chemical compound CCC(O)CC(O)=O REKYPYSUBKSCAT-UHFFFAOYSA-N 0.000 description 16
- 101710108497 p-hydroxybenzoate hydroxylase Proteins 0.000 description 16
- FJKROLUGYXJWQN-UHFFFAOYSA-N 4-hydroxybenzoic acid Chemical compound OC(=O)C1=CC=C(O)C=C1 FJKROLUGYXJWQN-UHFFFAOYSA-N 0.000 description 14
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- FYSSBMZUBSBFJL-VIFPVBQESA-N (S)-3-hydroxydecanoic acid Chemical compound CCCCCCC[C@H](O)CC(O)=O FYSSBMZUBSBFJL-VIFPVBQESA-N 0.000 description 1
- RKDVKSZUMVYZHH-UHFFFAOYSA-N 1,4-dioxane-2,5-dione Chemical compound O=C1COC(=O)CO1 RKDVKSZUMVYZHH-UHFFFAOYSA-N 0.000 description 1
- SCRCZNMJAVGGEI-UHFFFAOYSA-N 1,4-dioxane-2,5-dione;oxepan-2-one Chemical compound O=C1COC(=O)CO1.O=C1CCCCCO1 SCRCZNMJAVGGEI-UHFFFAOYSA-N 0.000 description 1
- RTBFRGCFXZNCOE-UHFFFAOYSA-N 1-methylsulfonylpiperidin-4-one Chemical compound CS(=O)(=O)N1CCC(=O)CC1 RTBFRGCFXZNCOE-UHFFFAOYSA-N 0.000 description 1
- QFGCFKJIPBRJGM-UHFFFAOYSA-N 12-[(2-methylpropan-2-yl)oxy]-12-oxododecanoic acid Chemical compound CC(C)(C)OC(=O)CCCCCCCCCCC(O)=O QFGCFKJIPBRJGM-UHFFFAOYSA-N 0.000 description 1
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- NDPLAKGOSZHTPH-UHFFFAOYSA-N 3-hydroxyoctanoic acid Chemical compound CCCCCC(O)CC(O)=O NDPLAKGOSZHTPH-UHFFFAOYSA-N 0.000 description 1
- SJZRECIVHVDYJC-UHFFFAOYSA-M 4-hydroxybutyrate Chemical compound OCCCC([O-])=O SJZRECIVHVDYJC-UHFFFAOYSA-M 0.000 description 1
- SJZRECIVHVDYJC-UHFFFAOYSA-N 4-hydroxybutyric acid Chemical compound OCCCC(O)=O SJZRECIVHVDYJC-UHFFFAOYSA-N 0.000 description 1
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- ABIKNKURIGPIRJ-UHFFFAOYSA-N DL-4-hydroxy caproic acid Chemical compound CCC(O)CCC(O)=O ABIKNKURIGPIRJ-UHFFFAOYSA-N 0.000 description 1
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- KDYFGRWQOYBRFD-NUQCWPJISA-N butanedioic acid Chemical compound O[14C](=O)CC[14C](O)=O KDYFGRWQOYBRFD-NUQCWPJISA-N 0.000 description 1
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- RXOHFPCZGPKIRD-UHFFFAOYSA-N naphthalene-2,6-dicarboxylic acid Chemical compound C1=C(C(O)=O)C=CC2=CC(C(=O)O)=CC=C21 RXOHFPCZGPKIRD-UHFFFAOYSA-N 0.000 description 1
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Images
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- Manufacture Of Macromolecular Shaped Articles (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Biological Depolymerization Polymers (AREA)
Description
1.P(3HB−co−3HH)
3HH単位の含量が18モル%である微生物産生P(3HB−co−3HH)を原料として用いた。この重合体はコモノマー単位の組成分布が極めて広いものであったので、常温でクロロホルム/n−ヘプタン混合溶媒を用いて分別を行った。この分別によって得た3HH単位の含量が21モル%である分画(Mn=1.15x105、Mw/Mn=1.42)を以下で使用した。
2.P(3HB)
微生物産生P(3HB)として、Mn=1.55x105、Mw/Mn=2.56のものを精製して使用した。
3.窒化ホウ素
ナカライテスク社から入手した窒化ホウ素の微粉末を使用した。
4.3HH単位の含量測定法
原料、及び分別後のP(3HB−co−3HH)における3HH単位の含量を測定するにあたっては、600MHzの1H NMRスペクトルを、CDCl3溶液中30℃で、ブルカー社のAVANCE600分光計で測定した。
5.重合体の分子量測定法
各重合体の数平均分子量(Mn)、重量平均分子量(Mw)、及び分子量分布(Mw/Mn)は、TSK GEL G2000Hxl及びGMHxlカラム(東ソー社製)を含むTosoh HPLC−8020ゲルパーミエーションクロマトグラフィーを用いて測定した。溶出液としてはクロロホルムを流速1.0mL・min−1で使用した。GPC溶出曲線を作成する際には標準物質として、分子量分布が狭いポリスチレンを使用した。
実施例1
窒化ホウ素の微粉末を超音波処理によってクロロホルムに分散し、その後重合体を溶解することによって、P(3HB−co−3HH)を88重量%、P(3HB)を10重量%、そして窒化ホウ素を2重量%含むクロロホルム溶液を調製し、これから溶液流延法によってフィルムを作製した。得られたフィルムを室温、真空下で1週間乾燥して残留溶媒を除去した後、下記評価に使用した。
比較例1
実施例1記載の方法に準じてP(3HB−co−3HH)のみからなるフィルムを得た。
比較例2
実施例1記載の方法に準じて、P(3HB−co−3HH)98重量%と窒化ホウ素2重量%とからなるフィルムを得た。
比較例3
実施例1記載の方法に準じて、P(3HB−co−3HH)90重量%とP(3HB)10重量%とからなるフィルムを得た。
参考例1
実施例1記載の方法に準じてP(3HB)のみからなるフィルムを得た。
参考例2
実施例1記載の方法に準じて、P(3HB)98重量%と窒化ホウ素2重量%とからなるフィルムを得た。
(評価方法)
以上で得た各フィルムをサンプルとし、パージガスとして窒素を用いた示差走査熱量測定法(DSC:Pyris Diamond、パーキンエルマー社)によって非等温結晶化調査を行った。非等温結晶化にあたって、まずサンプルを190℃で3分間かけて融解し熱履歴を破壊した後、走査速度を2.5℃/minとして190℃から−40℃までサンプルを冷却(冷却走査)して結晶化の挙動を観察した。
Claims (5)
- 少なくとも1種のポリヒドロキシアルカノエート共重合体を主体とする生分解性樹脂組成物であって、
ポリヒドロキシアルカノエート共重合体100重量部に対して、
さらに、ポリ(3−ヒドロキシブチレート)重合体を1〜30重量部と、
窒化ホウ素を0.1〜10重量部とを含有する生分解性樹脂組成物を、ポリ(3−ヒドロキシブチレート)重合体の融点以上の温度で成形加工してなる生分解性樹脂組成物成形体(ただし、当該成形体が発泡粒子成形体である場合を除く)。 - ポリヒドロキシアルカノエート共重合体として、ポリ[(3−ヒドロキシブチレート)−co−(3−ヒドロキシヘキサノエート)]共重合体またはポリ[(3−ヒドロキシブチレート)−co−(3−ヒドロキシバレレート)]共重合体を含有することを特徴とする請求項1に記載の生分解性樹脂組成物成形体。
- 生分解性樹脂組成物が、ポリ[(3−ヒドロキシブチレート)−co−(3−ヒドロキシヘキサノエート)]共重合体を主体とすることを特徴とする請求項1又は2に記載の生分解性樹脂組成物成形体。
- 前記ポリ[(3−ヒドロキシブチレート)−co−(3−ヒドロキシヘキサノエート)]共重合体100重量部に対して、前記ポリ(3−ヒドロキシブチレート)重合体を1〜30重量部、及び前記窒化ホウ素を0.1〜10重量部含有することを特徴とする請求項3に記載の生分解性樹脂組成物成形体。
- 前記ポリ[(3−ヒドロキシブチレート)−co−(3−ヒドロキシヘキサノエート)]共重合体において3−ヒドロキシヘキサノエート単位の含量が5〜25モル%であることを特徴とする請求項2〜4のいずれかに記載の生分解性樹脂組成物成形体。
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