Abstract:
:We describe an approach to print composite polymers in high-resolution three-dimensional (3D) architectures that can be rapidly transformed to a new permanent configuration directly by heating. The permanent shape of a component results from the programmed time evolution of the printed shape upon heating via the design of the architecture and process parameters of a composite consisting of a glassy shape memory polymer and an elastomer that is programmed with a built-in compressive strain during photopolymerization. Upon heating, the shape memory polymer softens, releases the constraint on the strained elastomer, and allows the object to transform into a new permanent shape, which can then be reprogrammed into multiple subsequent shapes. Our key advance, the markedly simplified creation of high-resolution complex 3D reprogrammable structures, promises to enable myriad applications across domains, including medical technology, aerospace, and consumer products, and even suggests a new paradigm in product design, where components are simultaneously designed to inhabit multiple configurations during service.
journal_name
Sci Advjournal_title
Science advancesauthors
Ding Z,Yuan C,Peng X,Wang T,Qi HJ,Dunn MLdoi
10.1126/sciadv.1602890subject
Has Abstractpub_date
2017-04-12 00:00:00pages
e1602890issue
4issn
2375-2548pii
1602890journal_volume
3pub_type
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