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4D PRINTING OF A HIGHLY EXTENSIBLE SHAPE MEMORY ELASTOMER WITH AN INTERFACIAL-ADHESION EFFECT BASED ON FUSED FILAMENT FABRICATION

Yang, Yunchong
http://rave.ohiolink.edu/etdc/view?acc_num=akron159067358988639

Abstract Details

2020, Master of Science, University of Akron, Polymer Science.
In recent years, 4D printing has gained attention because of its expectations for use in many fields, such as soft robotics, biomedical devices and flexible electronics. In 4D printing materials, shape memory polymers (SMPs) with excellent stimulus responsiveness and great compatibility with 3D printing techniques are considered as one of the best candidates for 4D printing. However, due to uncontrolled photo-polymerization process, most (meth)acrylic functionalized SMPs have permanently chemically cross-linked covalent networks with high cross-linking density. Therefore, they are always stiff and not able to be healed if damage occurs. Here, we report the first 4D printable filament that can be used to fabricate highly extensible shape memory elastomer with interfacial adhesion effect with a Fused Filament Fabrication (FFF) 3D printer. In this SM elastomer system, a linear semi-crystalline polymer, polycaprolactone (PCL), is blended with a block co-polymer—styrene-ethylene-butylene-styrene (SEBS) to obtain an easy formulated polymer blend, which has great compatibility with FFF 3D printing technology and can be stretched by up to 1100%. This SM elastomer features excellent shape memory effect (SME) with both fixity and recovery ratios over 90%. The PCL brings about interfacial-adhesion effect to this system, which is confirmed by optical microscope and tensile tests. Interestingly, the anisotropic mechanical properties of different printing orientations are tremendously reduced by thermal annealing. Furthermore, we investigated the relationships between morphologies and SME of materials with different ratios of PCL and SEBS. The printability of SH-SM elastomer was analyzed according to the results of rheological measurements. Finally, we successfully demonstrated that such a highly extensible SM elastomer has the potential application for deployable devices, such as Miura-Origami. The research opens an exciting approach to develop novel 4D printing functional elastomers, which could be applied in applications of soft robotics and deployable smart medical devices.
Andrey Dobrynin (Advisor)
Kevin Cavicchi (Committee Member)
52 p.
Polymers
4D printing; highly extensible; shape memory elastomer; interfacial-adhesion effect; fused filament fabrication

Recommended Citations

Citations

  • Yang, Y. (2020). 4D PRINTING OF A HIGHLY EXTENSIBLE SHAPE MEMORY ELASTOMER WITH AN INTERFACIAL-ADHESION EFFECT BASED ON FUSED FILAMENT FABRICATION [Master's thesis, University of Akron]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=akron159067358988639

    APA Style (7th edition)

  • Yang, Yunchong. 4D PRINTING OF A HIGHLY EXTENSIBLE SHAPE MEMORY ELASTOMER WITH AN INTERFACIAL-ADHESION EFFECT BASED ON FUSED FILAMENT FABRICATION. 2020. University of Akron, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=akron159067358988639.

    MLA Style (8th edition)

  • Yang, Yunchong. "4D PRINTING OF A HIGHLY EXTENSIBLE SHAPE MEMORY ELASTOMER WITH AN INTERFACIAL-ADHESION EFFECT BASED ON FUSED FILAMENT FABRICATION." Master's thesis, University of Akron, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=akron159067358988639

    Chicago Manual of Style (17th edition)

akron159067358988639
© 2020, some rights reserved.Creative Commons License 4D PRINTING OF A HIGHLY EXTENSIBLE SHAPE MEMORY ELASTOMER WITH AN INTERFACIAL-ADHESION EFFECT BASED ON FUSED FILAMENT FABRICATION by Yunchong Yang is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License. Based on a work at etd.ohiolink.edu.
This open access ETD is published by University of Akron and OhioLINK.