期刊
ACS APPLIED MATERIALS & INTERFACES
卷 2, 期 2, 页码 343-346出版社
AMER CHEMICAL SOC
DOI: 10.1021/am900755w
关键词
polyelectrolyte hydrogel; artificial muscle; actuation; hydrogel swelling; poly(acrylic acid)
资金
- Harvard University Nanoscale Science and Engineering Center (NSEC)
- Center for Nanoscale Systems (CNS)
To improve actuation of hydrogels, we utilized an emulsion polymerization to engineer porous structures into polyelectrolyte hydrogels. Porous hydrogels generated large deformation as a result of enhanced deswelling mechanisms; For instance, the decreased number of COO- groups that must be protonated in porous hydrogels to initiate bending. Measurements of the mechanical properties revealed that porous hydrogels also bend to a larger extent. because of their increased flexibility. Overall, our results demonstrate chat the fast and large actuation of polyelectrolyte hydrogels can be accomplished by increasing the hydrogel porosity.
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