Colloid and Polymer Science

, Volume 297, Issue 4, pp 503–512 | Cite as

A high strength hydrogel with quadruple-shape memory under the ambient condition

  • Xin Li
  • Shuangfeng Xu
  • Yaling Wang
  • Zai-Yin HuEmail author
  • Ru WangEmail author
Original Contribution


It is worth looking forward to manufacturing a shape memory hydrogel (SMH) with good mechanical properties for practical applications in a simple and rapid manner. In this study, the one-pot method has been proposed to prepare a quadruple shape memory hydrogel (PAA-CS, poly(acrylic acid)-chitosan). The PAA-CS hydrogel obtained by mixing acrylic acid (AA), chitosan (CS), initiator, and cross-linker at 60 °C shows excellent function of shape memory and recovery less than 20 s. Moreover, its maximum deformation can reach to 100%. Scanning electron microscopy (SEM) showed that PAA-CS hydrogels would form new cross-linked networks in NaOH, NaCl, and FeCl3, and these new networks can trigger quadruple shape memory. In addition, the tensile and compressive strength tests showed the PAA-CS hydrogel possesses outstanding mechanical properties. Its excellent property has enormous potential in applications where multi-shape changes responding to different stimuli are required.


Mechanical properties One-pot method Quadruple shape memory hydrogel Maximum deformation 


Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflicts of interest.


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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Department of Applied Chemistry, College of Chemical EngineeringSichuan UniversityChengduChina
  2. 2.School of Chemical EngineeringSichuan UniversityChengduChina

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