JP2009091581A - 高分子鎖の内部に架橋構造を有するスルホン化したポリ(アリレンエーテル)共重合体、高分子鎖の内部および末端に架橋構造を有するスルホン化したポリ(アリレンエーテル)共重合体およびそれを用いた高分子電解質膜 - Google Patents
高分子鎖の内部に架橋構造を有するスルホン化したポリ(アリレンエーテル)共重合体、高分子鎖の内部および末端に架橋構造を有するスルホン化したポリ(アリレンエーテル)共重合体およびそれを用いた高分子電解質膜 Download PDFInfo
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Abstract
【解決手段】
スルホン化したジヒドロキシ単量体(HO−SAr1−OH)、スルホン化していないジヒドロキシ単量体(HO−Ar−OH)、架橋可能なジハライド単量体(X−CM−X)およびスルホン化していないジハライド単量体(X−Ar−X)の縮重合反応によりスルホン酸が含まれたポリ(アリレンエーテル)共重合体を合成する。形成されたポリ(アリレンエーテル)共重合体は高分子鎖の内部に架橋可能な構造を有する。また、架橋可能なモノヒドロキシ単量体または架橋可能なモノハライド単量体を縮重合反応して高分子の末端にも架橋が可能となる。
【選択図】図1
Description
本発明の第1実施例に係るスルホン化したポリ(アリレンエーテル)共重合体は高分子の繰り返し単位の内部に架橋構造を有する。特に、高分子の繰り返し単位の末端部分に架橋構造が形成される。このようなスルホン化したポリ(アリレンエーテル)共重合体は下記の一般式1による。
前記製造例1〜製造例30によって合成された架橋構造を有するスルホン化したポリ(アリレンエーテル)共重合体を溶媒に溶かした後、0.45μm〜1μmのPTFE薄膜フィルターを用いて濾過する。その次、きれいなガラス板支持体に高分子溶媒を鋳物(casting)方法によってガラス板上に注いだ後、40℃オーブンで24時間放置する。
本発明の第2実施例に係るスルホン化したポリ(アリレンエーテル)共重合体は高分子鎖の内部および末端に架橋構造を有する。前記スルホン化したポリ(アリレンエーテル)共重合体は下記の一般式2による。
オルソ、メタまたはパラ位置に位置してもよい。ZにおけるYは前述したYとその意味が同様である。
体およびスルホン化していないジヒドロキシ単量体を活性化する。前記活性化過程は前記第1実施例に開示されたものと同様である。また、前記一般式1の共重合体の合成も第1実施例に開示されたものと同様である。
前記製造例32に基づいて合成された架橋構造を有するスルホン化したポリ(アリレンエーテル)共重合体を溶媒に溶かした後、0.45μm〜1μmのPTFE薄膜フィルターを用いて濾過する。その次、きれいなガラス板支持体に高分子溶媒を鋳物(casting)方法によってガラス板上に注いだ後、40℃オーブンに24時間放置する。
Claims (20)
- 下記の一般式1で示される高分子鎖の内部に架橋構造を有するスルホン化したポリ(アリレンエーテル)共重合体。
- 前記陽イオン電荷を有した対イオンはカリウムイオン、ナトリウムイオンまたはアルキルアミンであることを特徴とする、請求項2に記載の高分子鎖の内部に架橋構造を有するスルホン化したポリ(アリレンエーテル)共重合体。
- 前記CMは、
前記CMにおいてJは
RはR1が置換されている三重結合(ethynyl part)
前記Rにおいて、Gは炭素と炭素が直接連結している単結合、
R1はH、F、C1〜C5または
R2はH、XまたはC1〜C5であり、
Yは炭素と炭素が直接連結している単結合、
Aは炭素と炭素が直接連結している単結合、
EはH、CH3、F、CF3、C1〜C5または
LはH、F、C1〜C5であることを特徴とする、請求項1に記載の高分子鎖の内部に架橋構造を有するスルホン化したポリ(アリレンエーテル)共重合体。 - 前記縮重合反応は塩基、共沸溶媒および極性溶媒からなる溶媒存在下で0℃〜300℃温度範囲で1〜100時間行うことを特徴とする、請求項5に記載の高分子鎖の内部に架橋構造を有するスルホン化したポリ(アリレンエーテル)共重合体。
- 前記塩基はアルカリ金属、アルカリ土金属の水酸化物、炭酸塩および硫酸塩のうちから選択された無機塩基またはアンモニアを初めとする通常のアミン類のうちから選択された有機塩基であり、
前記極性溶媒は非プロトン性極性溶媒またはプロトン性極性溶媒であり、
前記非プロトン性極性溶媒としてはN−メチルピロリドン(NMP)、ジメチルホルムアミド(DMF)、N,N−ジメチルアセトアミド(DMAc)またはジメチルスルホキシド(DMSO)を用い、前記プロトン性極性溶媒としてはメチレンクロライド(CH2Cl2)、クロロホルム(CH3Cl)またはテトラヒドロフラン(THF)を用い、
前記共沸溶媒はベンゼン、トルエンまたはキシレンであることを特徴とする、請求項6に記載の高分子鎖の内部に架橋構造を有するスルホン化したポリ(アリレンエーテル)共重合体。 - 下記の一般式2で示される高分子鎖の内部および末端に架橋構造を有するスルホン化したポリ(アリレンエーテル)共重合体。
また、前記一般式2において、kは0.001〜1.000の範囲を有し、s=1−k値を有し、bは0.001〜1.000の範囲を有し、d=1−b値を有し、nは高分子重合体の繰り返し単位(repeating unit)を示し、nは整数であって10〜500を示す。 - 前記陽イオン電荷を有した対イオンはカリウムイオン、ナトリウムイオンまたはアルキルアミンであることを特徴とする、請求項9に記載の高分子鎖の内部および末端に架橋構造を有するスルホン化したポリ(アリレンエーテル)共重合体。
- 前記CMは
ECMは
前記Jは
RはR1が置換されている三重結合(ethynyl part)
前記Rにおいて、Gは炭素と炭素が直接連結している単結合、
R2はH、XまたはC1〜C5であり、
Yは炭素と炭素が直接連結している単結合、
Aは炭素と炭素が直接連結している単結合、
EはH、CH3、F、CF3、C1〜C5または
LはH、F、C1〜C5であることを特徴とする、請求項8に記載の高分子鎖の内部および末端に架橋構造を有するスルホン化したポリ(アリレンエーテル)共重合体。 - 下記の一般式1または一般式2で示されるスルホン化したポリ(アリレンエーテル)共重合体を用いて熱処理および酸処理によって架橋された高分子電解質膜。
前記一般式1および一般式2において、kは0.001〜1.000の範囲を有し、s=1−k値を有し、bは0.001〜1.000の範囲を有し、d=1−b値を有し、nは高分子重合体の繰り返し単位(repeating unit)を示し、nは整数であって10〜500を示す。 - 前記熱処理は溶媒に前記一般式1または一般式2のスルホン化したポリ(アリレンエーテル)共重合体を溶かした後に80℃〜350℃の温度で行い、前記熱処理に用いられる溶媒は双極性溶媒であることを特徴とする、請求項17に記載の架橋された高分子電解質膜。
- 前記双極性溶媒はN,N’−ジメチルホルムアミド(DMF)、ジメチルアセトアミド(DMAc)、ジメチルスルホキシド(DMSO)またはN−メチルピロリドン(NMP)であることを特徴とする、請求項18に記載の架橋された高分子電解質膜。
- 前記酸処理は、前記熱処理が完了してから常温に冷ました後、前記一般式1または前記一般式2の高分子のスルホン部分の塩イオン(Na+、K+、alkyl amonium ion)を水素で置換させることを特徴とする、請求項17に記載の架橋された高分子電解質膜。
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