Selectively actuated multi-shape memory effect of a polymer multicomposite

Li, Wenbing; Liu, Yanju; Leng, Jinsong

doi:10.1039/c5ta08513f

Cited by 67 publications

(53 citation statements)

References 50 publications

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“…This kind of SMPs is provided with the capability to memorize multiple temporary shapes in each shape memory cycle, and recover them consecutively upon exposure to appropriate external stimulus. This unique ability endows multi‐SMPs with obvious advantages in medical applications, intelligent actuations, as well as multishape coatings and adhesives . Due to the promising prospect, lots of researchers have been devoted to exploring the methods of fabricating multi‐SMPs.…”

Section: Introductionmentioning

confidence: 99%

A Facile Strategy to Fabricate Multishape Memory Polymers with Controllable Mechanical Properties

Zhang

Wei

Feng

2016

Macromol. Rapid Commun.

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A facile blending strategy to fabricate multishape memory polymers (SMPs) with only one sort of phase transition material has been reported. In this work, olefin block copolymer (OBC) and styrene-b-(ethylene-co-butylene)-b-styrene (SEBS), which are both physically crosslinked, are blended with crystalline paraffin together. Due to the different interactions between polymer matrices and paraffin, the paraffin penetrated in OBC and SEBS exhibit separated melting transitions. It is quite interesting that merely paraffin distributed in OBC also shows two distinct melting transitions with enough OBC content in composites. Therefore, excellent quadruple shape memory effect can be achieved with a maximum of three melting transitions. Furthermore, through adjusting the polymer species and content, the mechanical and rheological properties can be conveniently tuned to a great extent. Compared with the reported strategies, this simple and controllable method sheds light on rapid design of multi-SMPs using inexpensive raw materials, which greatly paves the way for multi-SMPs from laboratory to factory.

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Section: Introductionmentioning

confidence: 99%

A Facile Strategy to Fabricate Multishape Memory Polymers with Controllable Mechanical Properties

Zhang

Wei

Feng

2016

Macromol. Rapid Commun.

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“…The material is supplied by Harbin Institute of Technology, and the fabrication of this material has been reported in reference [29]. Using this material, Leng et al have synthesized SMP composites with multi-shape memory effect, which can selectively actuate to generate complex structures for targeted applications [30].…”

Section: Introductionmentioning

confidence: 99%

Adaptive repair device concept with shape memory polymer

Zhao

Liu

Lan

et al. 2017

Smart Mater. Struct.

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General rightsThis document is made available in accordance with publisher policies. Please cite only the published version using the reference above. AbstractShape memory polymer (SMP) is a new kind of intelligent polymer which can be activated by an external stimulus to change and subsequently recover its original shape. Duo to this shape memory effect, SMP can be used in wide range of engineer and bio-medical applications. This paper details an application of SMP on manufacturing of a fracture fixation. The basic properties were characterized by dynamic mechanical analysis (DMA), and the stress relaxation and fatigue were established. A SMP based fracture fixator was designed, analyzed and optimized.Finally, the fixator was fabricated and the fixed effects were verified by experiment in vitro. The performance of SMP based fixator was excellent and proved to be a potential replacement for traditional fracture fixator.

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“…Shape memory polymers (SMPs) are polymeric smart materials with the capacity to recover from temporary shapes to their memorized permanent geometry upon the application of external stimuli [26][27][28][29][30][31][32]. The heating activation has frequently been used to trigger the shape memory effect [33][34][35].…”

Section: Introductionmentioning

confidence: 99%

Shape memory polymer-based hybrid honeycomb structures with zero Poisson’s ratio and variable stiffness

Huang

Zhang

Scarpa

et al. 2017

Composite Structures

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University of Bristol -Explore Bristol Research General rightsThis document is made available in accordance with publisher policies. Please cite only the published version using the reference above. Full terms of use are available: http://www.bristol.ac.uk/pure/about/ebr-terms Abstract: This work describes the out-of-plane bending performance, shape memory effect and variable stiffness of a zero Poisson's ratio honeycomb structure made from the tessellation of re-entrant hexagons and thin plates. The re-entrant hexagons are fabricated with ABS plastics and the thin plates are made from thermosetting styrene-based shape memory polymers (SMPs). The hexagons and the SMP plates are bonded within the groove joints in the thickness direction of the re-entrant cell units. The re-entrant hexagons generate out-of-plane flatwise compressive stiffness and in-plane compliance, while the SMPs thin plates support out-of-plane flexibility, the shape memory effect and a variable bending stiffness. Because the ABS plastics possesses a significantly higher glass transition temperature than the SMPs, the ZPR honeycomb structure features a higher out-of-plane flexibility when the environmental temperature rises from room temperature to the glass transition temperature of the SMPs. On the contrary, the flatwise compressive stiffness of the ZPR honeycomb remains unchanged. Three-point bending tests have also been performed to determine the out-of-plane bending performance of the ZPR structures at varying temperatures.

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Selectively actuated multi-shape memory effect of a polymer multicomposite

Cited by 67 publications

References 50 publications

A Facile Strategy to Fabricate Multishape Memory Polymers with Controllable Mechanical Properties

A Facile Strategy to Fabricate Multishape Memory Polymers with Controllable Mechanical Properties

Adaptive repair device concept with shape memory polymer

Shape memory polymer-based hybrid honeycomb structures with zero Poisson’s ratio and variable stiffness

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