Bio-Inspired Polymer Composite Actuator and Generator Driven by Water Gradients

被引:746
作者
Ma, Mingming [1 ]
Guo, Liang [1 ]
Anderson, Daniel G. [1 ,2 ,3 ]
Langer, Robert [1 ,2 ,3 ]
机构
[1] MIT, David H Koch Inst Integrat Canc Res, Cambridge, MA 02139 USA
[2] MIT, Harvard Mit Div Hlth Sci & Technol, Cambridge, MA 02139 USA
[3] MIT, Dept Chem Engn, Cambridge, MA 02139 USA
关键词
SHAPE-MEMORY POLYMERS; BIOMEDICAL APPLICATIONS; ARTIFICIAL MUSCLES; POLYPYRROLE; LIGHT; SYSTEMS; RANGE; GEL; PH;
D O I
10.1126/science.1230262
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
Here we describe the development of a water-responsive polymer film. Combining both a rigid matrix (polypyrrole) and a dynamic network (polyol-borate), strong and flexible polymer films were developed that can exchange water with the environment to induce film expansion and contraction, resulting in rapid and continuous locomotion. The film actuator can generate contractile stress up to 27 megapascals, lift objects 380 times heavier than itself, and transport cargo 10 times heavier than itself. We have assembled a generator by associating this actuator with a piezoelectric element. Driven by water gradients, this generator outputs alternating electricity at similar to 0.3 hertz, with a peak voltage of similar to 1.0 volt. The electrical energy is stored in capacitors that could power micro-and nanoelectronic devices.
引用
收藏
页码:186 / 189
页数:4
相关论文
共 27 条
[11]   Biodegradable, elastic shape-memory polymers for potential biomedical applications [J].
Lendlein, A ;
Langer, R .
SCIENCE, 2002, 296 (5573) :1673-1676
[12]   Light-induced shape-memory polymers [J].
Lendlein, A ;
Jiang, HY ;
Jünger, O ;
Langer, R .
NATURE, 2005, 434 (7035) :879-882
[13]  
Madden JD, 2002, MATER RES SOC SYMP P, V698, P137
[14]  
Minko S., 2006, RESPONSIVE POLYM MAT
[15]  
Okuzaki H, 1998, J POLYM SCI POL PHYS, V36, P2237, DOI 10.1002/(SICI)1099-0488(19980915)36:12<2237::AID-POLB20>3.0.CO
[16]  
2-#
[17]   A POLYMER GEL WITH ELECTRICALLY DRIVEN MOTILITY [J].
OSADA, Y ;
OKUZAKI, H ;
HORI, H .
NATURE, 1992, 355 (6357) :242-244
[18]   A supramolecular multi-block copolymer with a high propensity for alternation [J].
Park, Taiho ;
Zimmerman, Steven C. .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2006, 128 (43) :13986-13987
[19]  
Qin Y, 2008, NATURE, V451, P809, DOI [10.1038/nature06601, 10.1038/nature066O1]
[20]   ION-TRANSPORT IN POLYPYRROLE AND A POLYPYRROLE POLYANION COMPOSITE [J].
REN, XM ;
PICKUP, PG .
JOURNAL OF PHYSICAL CHEMISTRY, 1993, 97 (20) :5356-5362