Mono–Material 4D Printing of Digital Shape–Memory Components

Dynamic shading systems in buildings help reduce solar gain. Actuated systems, which depend on renewable energy with reduced mechanical parts, further reduce building energy consumption compared to traditional interactive systems. This paper investigates stimuli-responsive polymer application in arc...

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Autores principales:	Dalia Niazy, Ahmed Elsabbagh, Mostafa R. Ismail
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	4D printing material programming digital fabrication shape-memory polymers Organic chemistry QD241-441
Acceso en línea:	https://doaj.org/article/2a83d052495b48e5bd07c7b6cc41a421
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spelling	oai:doaj.org-article:2a83d052495b48e5bd07c7b6cc41a4212021-11-11T18:46:46ZMono–Material 4D Printing of Digital Shape–Memory Components10.3390/polym132137672073-4360https://doaj.org/article/2a83d052495b48e5bd07c7b6cc41a4212021-10-01T00:00:00Zhttps://www.mdpi.com/2073-4360/13/21/3767https://doaj.org/toc/2073-4360Dynamic shading systems in buildings help reduce solar gain. Actuated systems, which depend on renewable energy with reduced mechanical parts, further reduce building energy consumption compared to traditional interactive systems. This paper investigates stimuli-responsive polymer application in architectural products for sustainable energy consumption, complying with sustainable development goals (SDGs). The proposed research method posits that, by varying the infill percentage in a pre-determined manner inside a 3D-printed mono-material component, directionally controlled shape change can be detected due to thermal stimuli application. Thus, motion behavior can be engineered into a material. In this study, PLA+, PETG, TPU and PA 6 printed components are investigated under a thermal cycle test to identify a thermally responsive shape-memory polymer candidate that actuates within the built environment temperature range. A differential scanning calorimetry (DSC) test is carried out on TPU 95A and PA 6 to interpret the material shape response in terms of transitional temperatures. All materials tested show an anisotropic shape-change reaction in a pre-programmed manner, complying with the behavior engineered into the matter. Four-dimensional (4D)-printed PA6 shows shape-shifting behavior and total recovery to initial position within the built environment temperature range.Dalia NiazyAhmed ElsabbaghMostafa R. IsmailMDPI AGarticle4D printingmaterial programmingdigital fabricationshape-memory polymersOrganic chemistryQD241-441ENPolymers, Vol 13, Iss 3767, p 3767 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	4D printing material programming digital fabrication shape-memory polymers Organic chemistry QD241-441
spellingShingle	4D printing material programming digital fabrication shape-memory polymers Organic chemistry QD241-441 Dalia Niazy Ahmed Elsabbagh Mostafa R. Ismail Mono–Material 4D Printing of Digital Shape–Memory Components
description	Dynamic shading systems in buildings help reduce solar gain. Actuated systems, which depend on renewable energy with reduced mechanical parts, further reduce building energy consumption compared to traditional interactive systems. This paper investigates stimuli-responsive polymer application in architectural products for sustainable energy consumption, complying with sustainable development goals (SDGs). The proposed research method posits that, by varying the infill percentage in a pre-determined manner inside a 3D-printed mono-material component, directionally controlled shape change can be detected due to thermal stimuli application. Thus, motion behavior can be engineered into a material. In this study, PLA+, PETG, TPU and PA 6 printed components are investigated under a thermal cycle test to identify a thermally responsive shape-memory polymer candidate that actuates within the built environment temperature range. A differential scanning calorimetry (DSC) test is carried out on TPU 95A and PA 6 to interpret the material shape response in terms of transitional temperatures. All materials tested show an anisotropic shape-change reaction in a pre-programmed manner, complying with the behavior engineered into the matter. Four-dimensional (4D)-printed PA6 shows shape-shifting behavior and total recovery to initial position within the built environment temperature range.
format	article
author	Dalia Niazy Ahmed Elsabbagh Mostafa R. Ismail
author_facet	Dalia Niazy Ahmed Elsabbagh Mostafa R. Ismail
author_sort	Dalia Niazy
title	Mono–Material 4D Printing of Digital Shape–Memory Components
title_short	Mono–Material 4D Printing of Digital Shape–Memory Components
title_full	Mono–Material 4D Printing of Digital Shape–Memory Components
title_fullStr	Mono–Material 4D Printing of Digital Shape–Memory Components
title_full_unstemmed	Mono–Material 4D Printing of Digital Shape–Memory Components
title_sort	mono–material 4d printing of digital shape–memory components
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/2a83d052495b48e5bd07c7b6cc41a421
work_keys_str_mv	AT dalianiazy monomaterial4dprintingofdigitalshapememorycomponents AT ahmedelsabbagh monomaterial4dprintingofdigitalshapememorycomponents AT mostafarismail monomaterial4dprintingofdigitalshapememorycomponents
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Mono–Material 4D Printing of Digital Shape–Memory Components

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