JP2017206800A - ポリマーコーティングされたスルホン酸化ポリエステル−銀ナノ粒子コンポジットフィラメントおよびその製造方法 - Google Patents
ポリマーコーティングされたスルホン酸化ポリエステル−銀ナノ粒子コンポジットフィラメントおよびその製造方法 Download PDFInfo
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Abstract
Description
本発明の特定の実施形態は、ソジオスルホン酸化ポリエステル樹脂粒子を水中で自己集合させる間に、同時に銀(I)イオンを還元することによる、銀ナノ粒子(AgNP)を合成する方法を提供する。バルク溶媒として水を使用するこの方法は、環境に優しく、有機溶媒を含まない(すなわち、有機物を含まない溶媒)。この方法は、ポリマー金属ナノコンポジットを調製するのに最低限しか時間を必要とせず、効率的である。理論に束縛されることを望まないが、同時にAgNPに還元しつつ、ソジオスルホン酸化ポリエステルの自己集合中に、ポリマーマトリックス内に銀イオンが捕捉されると考えられる。スルホン酸化ポリエステル−銀ナノ粒子(SPE−AgNP)は、自己集合中または図1に示されるようにポリマーを水に分散させている間に、同時に合成される。従って、ソジオスルホン酸化ポリエステルは、銀イオンの担体としても、銀ナノコンポジットの系中での合成のための有機マトリックスとしても働く。硝酸銀から銀ナノ粒子(AgNP)へと還元するために、ソジオスルホン酸化ポリエステルの自己集合中に任意要素の還元剤を加え、十分に分散した粒子を得る。ポリエステルマトリックスは、AgNPの凝集を抑制すると考えられるため、重要な役割を果たす。一方、スルホン酸化ポリエステルの多孔性によって、銀イオンがポリマーマトリックス全体に拡散し、および/または吸収され、ポリエステルのスルホネート官能基との遮られていない相互作用が可能になる。銀イオンの還元に使用される還元剤も、ポリエステルマトリックス全体に自由に拡散し、ポリエステル粒子の表面および内部に十分に分散したAgNPの生成を促進する。有利なことに、このプロセスは、あらかじめ作成しておいたナノ粒子を用いる従来の方法では起こってしまうナノ粒子の凝集を最低限にする。スルホン酸化ポリマーマトリックスは、AgNPの分散を維持し、コンポジットの全体的な化学安定性および機械安定性を維持するのに重要な役割を有する。次いで、ポリスチレンシェルをSPE−AgNPの上に作成してもよい。疎水性モノマー(例えば、スチレン)が加えられる場合、SPEナノ球の疎水性SPEコアの周囲で重合し、SPE−AgNPの表面にポリスチレンシェルが生成する。スチレンモノマーは、多孔性SPEコアの中に拡散してもよい。スルホン酸化ポリエステルは、系中で合成されるAgNPのための安定化剤として重要な役割を果たし、さらに、界面活性剤を使用することなく水中でスチレンを重合させるための望ましい環境を与えるナノテンプレートとして重要な役割を果たす。
まず、本明細書に記載されるコンポジット粉末を、ポリマーコーティングされたスルホン酸化ポリエステル−銀ナノ粒子(SPE−AgNP)から調製し、次いで、フィラメント製造によって、コンポジット粉末をコンポジットフィラメントに変換する。
本開示は、本明細書に記載するコンポジット粉末を製造するための方法も提供する。ポリマーコーティングされたスルホン酸化ポリエステル−銀ナノ粒子SPE−AgNPから微粒子を調製するための方法は、トナー粒子を作成するために知られているプロセス(乳化凝集、すなわちEA)と同様である。凝集剤(例えば、酢酸亜鉛、塩化マグネシウム塩、硫酸アルミニウムおよびポリ塩化アルミニウム(PAC))の助けを借りて、狭い粒度分布を有し、制御可能な粒径を有する粒子を得ることができる。粒子の形状は、温度、時間および攪拌によって制御され、不規則な形状または不完全な球形から、ほぼ球形または完璧な球形までの範囲の粒子を与えることができる。
この実施例は、本開示の実施形態の分岐したソジオスルホン酸化アモルファスポリエステル(BSPE)の調製を記載する。
この比較例は、銀もスチレンシェルも含まないBSPEコア粒子の調製を示す。
この比較例は、BSPEコア粒子の周囲にスチレンシェルを作成し、コア粒子の中に銀が分散していないものを示す。
この実施例は、還元剤が存在しない状態で調製されたBSPE/AgNPコアコンポジットの周囲のスチレンシェルの作成を示す。
この実施例は、還元剤であるオレイン酸存在下で調製されたBSPE/AgNPコア粒子の周囲のスチレンシェルの作成を示す。
この実施例は、還元剤であるグルタチオン存在下で調製されたBSPE/AgNPコア粒子の周囲のスチレンシェルの作成を示す。
この実施例は、還元剤存在下で調製されたBSPE/AgNPコア粒子の周囲のスチレンシェルの作成を示す。
この実施例は、スチレン化BSPE/AgNP粉末(すなわち、スチレンシェル/BSPE/AgNP粉末)の調製を示す。
この実施例は、フィラメントの製造を示す。
この実施例は、実施例3〜7から得られたハイブリッドコンポジット(スチレンシェル/BSPE/AgNP)の頑丈さを試験する。
耐溶媒性試験は、コンポジットが、他の方法ではこのポリマーを分解する化学薬品または溶媒に耐える能力を試験する。
表3に示されるように、ポリマーシェルで保護された(例えば、実施例6から得たスチレン/BSPE/AgNP)は、熱重量分析(TGA)によって、400℃でわずか約50%の分解を示し、一方、コーティングされていないBSPE−AgNPコンポジットBSPEのみは、400℃で80%分解する。スチレンコーティングされたBSPE/AgNPの熱安定性は、ポリスチレンのみの熱安定性より複雑なようである。このハイブリッドコンポジットの第1の大きな質量損失は、ほぼ300℃で始まる(30.86%)が、コーティングされていないサンプルおよびポリスチレンコントロールよりも安定であり、かなり遅く分解する。
耐酸/塩基性試験は、他の方法ではコンポジットを分解する酸および塩基にコンポジットが耐える能力を試験する。
この実施例は、フィラメントの抗菌試験を示す。
Claims (10)
- コンポジットフィラメントであって、
スルホン酸化ポリエステルマトリックス;および前記マトリックスの中に分散した複数の銀ナノ粒子を含むコア粒子と;
前記コア粒子の周囲に配置されたシェルポリマーと
を含み、
前記銀ナノ粒子が、コンポジットフィラメント中に約0.5ppm〜約50,000ppmの範囲で存在し;さらに、前記コンポジットフィラメントは、直径が約0.5mm〜約5mmである、コンポジットフィラメント。 - 前記スルホン酸化ポリエステルは、ガラス転移(Tg)温度が約45℃〜約95℃である、請求項1に記載のコンポジットフィラメント。
- 前記スルホン酸化ポリエステルマトリックスが、分岐したポリマーを含む、請求項1に記載のコンポジットフィラメント。
- 前記スルホン酸化ポリエステルマトリックスが、直鎖ポリマーを含む、請求項1に記載のコンポジットフィラメント。
- コンポジットフィラメントを製造する方法であって、
有機物を含まない溶媒中、スルホン酸化ポリエステル樹脂を加熱することと;
前記有機物を含まない溶媒中、前記加熱した樹脂に銀(I)イオン溶液を加え、混合物を作成することと;
前記混合物に還元剤溶液を加えることによって、スルホン酸化ポリエステルマトリックスと前記スルホン酸化ポリエステルマトリックスの中に配置された複数の銀ナノ粒子とを含むコア粒子のエマルションを作成することと;
前記コア粒子のエマルションにスチレンモノマーおよび開始剤を加え、前記コア粒子の周囲に配置されたシェルポリマーを作成し、それによって、コンポジット構造を作成することと;
コンポジット粒子のエマルションを凝集させ、凝集した粒子を作成することと;
前記凝集した粒子を融着させ、融着した粒子を作成することと;
前記融着した粒子を洗浄することによって、コンポジット粉末を作成することと;
前記コンポジット粉末を押出成型し、コンポジットフィラメントを製造することと
を含む、方法。 - 前記スルホン酸化ポリエステル樹脂を加熱することが、約65℃〜約90℃の温度で行われる、請求項5に記載の方法。
- 前記凝集させることが、約30℃〜約80℃の温度で行われる、請求項5に記載の方法。
- 前記融着させることが、約30℃〜約95℃の温度で行われる、請求項5に記載の方法。
- スルホン酸化ポリエステルマトリックス;および前記マトリックスの中に分散した複数の銀ナノ粒子を含むコア粒子と;
前記コア粒子の周囲に配置されたシェルポリマーと
を含む、コンポジットフィラメントを含み、
前記銀ナノ粒子が、コンポジットフィラメント中に約0.5ppm〜約50,000ppmの範囲で存在し;さらに、前記コンポジット粉末は、粒径が約10ミクロン〜約300ミクロンである、物品。 - 前記物品が、生化学センサ、光学検出器、抗菌剤、繊維製品、化粧品、電子部品、繊維および低温超伝導材料からなる群から選択される、請求項9に記載の物品。
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| RU2742118C2 (ru) | 2021-02-02 |
| EP3231900A1 (en) | 2017-10-18 |
| RU2017110043A (ru) | 2018-10-01 |
| CN107287692B (zh) | 2020-03-31 |
| KR102206439B1 (ko) | 2021-01-21 |
| RU2017110043A3 (ja) | 2020-06-25 |
| CN107287692A (zh) | 2017-10-24 |
| US20170298536A1 (en) | 2017-10-19 |
| KR20170117317A (ko) | 2017-10-23 |
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