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Degradable 4D-printed hydration-driven actuators from a single family of amphiphilic star-shaped copolymers
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- المؤلفون: Grosjean, Mathilde; Schmidleithner, Christina; Dejean, Stéphane; Larsen, Niels B.; Nottelet, Benjamin
- المصدر:
Grosjean , M , Schmidleithner , C , Dejean , S , Larsen , N B & Nottelet , B 2024 , ' Degradable 4D-printed hydration-driven actuators from a single family of amphiphilic star-shaped copolymers ' , Materials and Design , vol. 241 , 112953 .
- نوع التسجيلة:
Electronic Resource
- الدخول الالكتروني :
https://orbit.dtu.dk/en/publications/fc4900db-eece-46a9-8b32-b05e2bb4fb6c
https://doi.org/10.1016/j.matdes.2024.112953
https://backend.orbit.dtu.dk/ws/files/360081903/1-s2.0-S0264127524003277-main.pdf
- معلومة اضافية
- Publisher Information:
2024
- نبذة مختصرة :
Actuators are largely used in biomedical applications in the presence of sensitive live cells or biomolecules, which makes actuators triggered by water uptake highly appealing. Dual-material printing and hydration driven expansion is a method of choice to produce such actuators, but mostly rely of non-degradable polymers or on the combination of polymers of different nature that may lead to interface incompatibilities. To overcome this challenge, we report here on two photocrosslinkable resins based on a single family of degradable hydrophilic or hydrophobic star-shaped poly(ethylene glycol)-poly(lactide) copolymers. The two materials are first printed individually and characterized to ensure that their properties enable the printing of dual material objects by stereolithographic digital-light processing. Dual-materials actuators are then printed by sequential switching of the hydrophobic and hydrophilic resin baths. Objects of simple and complex shapes are easily obtained and exhibit rapid actuation (<60 s) upon hydration. The swelling-induced shape changes are accurately reproduced by numerical modeling of the printed geometries using the obtained material swelling properties. This set of results offers new perspectives to develop 4D-printed temporary medical devices.
- الموضوع:
- Availability:
Open access content. Open access content
info:eu-repo/semantics/openAccess
- Note:
application/pdf
English
- Other Numbers:
EDN oai:pure.atira.dk:publications/fc4900db-eece-46a9-8b32-b05e2bb4fb6c
1439389727
- Contributing Source:
TECHNICAL KNOWLEDGE CTR DENMARK
From OAIster®, provided by the OCLC Cooperative.
- الرقم المعرف:
edsoai.on1439389727
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