絞り込み

16645

広告

Self-curing super-stretchable polymer/microgel complex coacervate gels without covalent bond formation.

著者 Wu S , Zhu M , Lu D , Milani AH , Lian Q , Fielding LA , Saunders BR , Derry MJ , Armes SP , Adlam D , Hoyland JA
Chem Sci.2019 Oct 14 ; 10(38):8832-8839.
この記事をPubMed上で見るPubMedで表示
この記事をGoogle翻訳上で見る Google翻訳で開く

スターを付ける スターを付ける     (2view , 0users)

Full Text Sources

Elastic physical gels are highly desirable because they can be conveniently prepared and readily shaped. Unfortunately, many elastic physical gels prepared in water require free-radical polymerization during the gel formation stage. In contrast, complex coacervate gels are physical gels that can be prepared by simply mixing two pre-formed oppositely-charged polyelectrolytes. However, as far as we are aware, highly elastic complex coacervate gels have not yet been reported. Herein, we combine polyanionic microgel particles with a well-known commercially-available cationic polyelectrolyte to prepare polymer/microgel complex coacervate (PMCC) physical gels. This new family of gels requires annealing at only 37 °C and behaves like a covalent gel but does not form covalent bonds. Thermal reconfiguration of the dynamic ionic bonds transforms the shapeable pre-gel into a highly elastic gel that is super-stretchable, adhesive, self-healing, highly swellable and can be further toughened using Ca as an ionic crosslinker. Our PMCC gels have excellent potential for applications as engineering gels and structural biomaterials, as well as for wound healing and water purification.
PMID: 31803457 [PubMed]
印刷用ページを開く Endnote用テキストダウンロード