• 专利标题:   Preparing graphene oxide-dopamine hydrochloride/sodium alginate/poly(acrylic acid-co-acrylamide) multifunctional hydrogel comprises e.g. performing in-situ self-polymerization of graphene oxide and dopamine hydrochloride.
  • 专利号:   CN111423539-A
  • 发明人:   JIN X, JIANG H, ZHANG Z, BAO X, QIAO F, HU Q
  • 专利权人:   UNIV ZHEJIANG
  • 国际专利分类:   C08F220/06, C08F220/56, C08F222/38, C08F251/00, C08F283/00, C08J003/075, C08J003/24, C08K003/04, C08L033/02, C08L005/08, C08L079/04
  • 专利详细信息:   CN111423539-A 17 Jul 2020 C08F-251/00 202065 Pages: 7 Chinese
  • 申请详细信息:   CN111423539-A CN10356663 29 Apr 2020
  • 优先权号:   CN10356663

▎ 摘  要

NOVELTY - Preparing graphene oxide-dopamine hydrochloride/sodium alginate/poly(acrylic acid-co-acrylamide) multifunctional hydrogel by one-pot in-situ free radical copolymerization method comprises carrying out in-situ self-polymerization of graphene oxide and dopamine hydrochloride to obtain graphene oxide-dopamine hydrochloride dispersion, and then carrying out opolymerization of graphene oxide-dopamine hydrochloride dispersion using acrylic acid and acrylamide as co-monomers and adding sodium alginate, and constructing a double network structure using N,N'-methylenebisacrylamide as a chemical crosslinking agent and ferric ion as a physical crosslinking agent of acrylic acid and sodium alginate, where the addition of acrylic acid, acrylamide, N,N'-methylenebisacrylamide and ferric ion to the dispersion in the form of dropwise addition. USE - The hydrogel is useful as conductive matrix material for biosensors. ADVANTAGE - The hydrogel has excellent mechanical properties, self-adhesive properties, self-healing properties and force-sensitive properties. DETAILED DESCRIPTION - Preparing graphene oxide-dopamine hydrochloride (GO-DA)/sodium alginate/poly(acrylic acid-co-acrylamide) (P(acrylic acid-co-AAm)) multifunctional hydrogel by one-pot in-situ free radical copolymerization method comprises carrying out in-situ self-polymerization of graphene oxide (GO) and dopamine hydrochloride (DA) to obtain graphene oxide-dopamine hydrochloride (GO-DA) dispersion, and then carrying out opolymerization of graphene oxide-dopamine hydrochloride dispersion using acrylic acid and acrylamide (AAm) as co-monomers and adding sodium alginate, and constructing a double network structure using N,N'-methylenebisacrylamide (MBAA) as a chemical crosslinking agent and ferric ion as a physical crosslinking agent of acrylic acid and sodium alginate,where the addition of acrylic acid, acrylamide, N,N'-methylenebisacrylamide and ferric ion to the dispersion in the form of dropwise addition. An INDEPENDENT CLAIM is also included for graphene oxide-dopamine hydrochloride/sodium alginate/ poly(acrylic acid-co-acrylamide) multifunctional hydrogel having self-adhesive, self-healing and force-sensitive properties obtained by above method.