Display options
Cite
Zhang L, Qiu X, Yuan Y, et al. Humidity- and Sunlight-Driven Motion of a Chemically Bonded Polymer Bilayer with Programmable Surface Patterns. ACS Appl Mater Interfaces. 2017;9(47):41599-41606doi: 10.1021/acsami.7b14112.
Zhang, L., Qiu, X., Yuan, Y., & Zhang, T. (2017). Humidity- and Sunlight-Driven Motion of a Chemically Bonded Polymer Bilayer with Programmable Surface Patterns. ACS applied materials & interfaces, 9(47), 41599-41606. https://doi.org/10.1021/acsami.7b14112
Zhang, Lidong, et al. "Humidity- and Sunlight-Driven Motion of a Chemically Bonded Polymer Bilayer with Programmable Surface Patterns." ACS applied materials & interfaces vol. 9,47 (2017): 41599-41606. doi: https://doi.org/10.1021/acsami.7b14112
Zhang L, Qiu X, Yuan Y, Zhang T. Humidity- and Sunlight-Driven Motion of a Chemically Bonded Polymer Bilayer with Programmable Surface Patterns. ACS Appl Mater Interfaces. 2017 Nov 29;9(47):41599-41606. doi: 10.1021/acsami.7b14112. Epub 2017 Nov 14. PMID: 29112819.
Copy Download .nbib Format: NLM
Share it on

ACS Appl Mater Interfaces. 2017 Nov 29;9(47):41599-41606. doi: 10.1021/acsami.7b14112. Epub 2017 Nov 14.

Humidity- and Sunlight-Driven Motion of a Chemically Bonded Polymer Bilayer with Programmable Surface Patterns.

ACS applied materials & interfaces

Lidong Zhang, Xiaxin Qiu, Yihui Yuan, Ting Zhang

Affiliations

  1. Department of Chemistry and Molecular Engineering, East China Normal University , Shanghai 200241, People's Republic of China.

PMID: 29112819 DOI: 10.1021/acsami.7b14112

Abstract

We report a bilayer of sodium alginate/polyvinylidene fluoride (SA/PVDF) that is chemically bonded through a series of interfacial coupling reactions. The SA layer is hydrophilic in structure and is capable of strong interaction with water molecules, thus presenting high sensitivity to humidity, whereas the PVDF layer is hydrophobic, inert to humidity. This structural feature results in the bilayer having asymmetric humidity-responsive performances that can thus make its shape change with directionality, which cannot be achieved in an SA single layer. The responsive process to humidity can be adjusted by exposure of the bilayer to sunlight by means of a photothermal effect that accelerates dehydration of the bilayer to cause more rapid shape deformations. When the sunlight is removed, the bilayer adsorbs humidity again and returns to its original shape, indicating good reversibility. To exactly regulate the shape deformations of the bilayer with external stimuli, we employ Ca

Keywords: humidity and sunlight responses; interfacial reactions; programmed mechanical actuation; smart materials; surface crosslinking patterns

Publication Types