Shape morphing elastomers actuated by pneumatic pressure and reinforced by PLA based armature

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Journal Title
Journal ISSN
Volume Title
Kemian tekniikan korkeakoulu | Master's thesis
Date
2023-10-10
Department
Major/Subject
Functional Materials for Global Challenges (AMIS)
Mcode
CHEM3061
Degree programme
Master's Programme in Advanced Materials for Innovation and Sustainability
Language
en
Pages
65
Series
Abstract
Inspired by nature and the study of plant morphogenesis, the field of shape-changing materials is thriving, with technological advancements enabling the imitation of natural growth processes. Various strategies have been employed to design such objects, such as swelling hydrogels or dielectric elastomers. One highly interesting and innovative application is the pneumatic inflation of elastomers. This process does not require expensive materials, machinery, or technically challenging protocols to implement. This study focuses on improving existing objects known as pneumatic shape morphing elastomers, or "baromorphs." While these baromorphs possess interesting elastic properties, they are challenging to produce at larger sizes. The objective is to create new objects based on baromorphs that can change shape while significantly enhancing their rigidity characteristics. These objects, similar to baromorphs, feature a rigid internal framework through which air circulates. Digital representations have been created to define the shapes these objects should have, and materials have been selected to meet the mechanical requirements of these new structures. A manufacturing protocol will be detailed for the production of such pieces, which will then be compared to similar baromorphs based on rigidity criteria.
Description
Supervisor
Koskinen, Jari
Thesis advisor
Roman, Benoît
Keywords
baromorph, shape-morphing, pneumatic actuation, stiffness, PLA channels, pressure
Other note
Citation