• 文献标题:   Graphene Enhances the Shape Memory of Poly (acrylamide-co-acrylic acid) Grafted on Graphene
  • 文献类型:   Article
  • 作  者:   DONG J, DING JB, WENG J, DAI LZ
  • 作者关键词:   graphene, hydrogen bonding, nanotechnology, shape memory, selfhealing
  • 出版物名称:   MACROMOLECULAR RAPID COMMUNICATIONS
  • ISSN:   1022-1336 EI 1521-3927
  • 通讯作者地址:   Xiamen Univ
  • 被引频次:   31
  • DOI:   10.1002/marc.201200814
  • 出版年:   2013

▎ 摘  要

Acrylamide and acrylic acid are grafted on graphene by free-radical polymerization to produce a series of graphenepoly(acrylamide-co-acrylic acid) hybrid materials with different contents of graphene. The materials demonstrate shape memory effect and self-healing ability when the content of graphene is in the range of 10%30% even though poly(acrylamide-co-acrylic acid) itself had poor shape memory ability. The permanent shape of the materials can be recovered well after 20 cycles of cut and self-healing. The result is attributed to the hardsoft design that can combine nonreversible cross-link by grafting copolymer on graphene and reversible cross-link utilizing the zipper effect of poly(acrylamide-co-acrylic acid) to form or dissociate the hydrogen-bond network stimulated by external heating.