NDLI: Selectively actuated multi-shape memory effect of a polymer multicomposite

Content Provider	Royal Society of Chemistry (RSC)
Author	Leng, Jinsong Liu, Yanju Li, Wenbing
Copyright Year	2015
Abstract	In this paper, a new type of multicomposite styrene-based shape memory polymer (SSMP) was fabricated. This new SSMP included three regions: a SSMP matrix filled with multiwalled carbon nanotubes (SSMP–CNT), a SSMP matrix filled with Fe3O4 nanoparticles (SSMP–Fe3O4), and a third neat SSMP region which is located between the two composite regions. Differential scanning calorimetry (DSC) and dynamic mechanical analysis (DMA) results demonstrated that all the three SSMP materials possessed two well-separated transitions, which were subsequently used for the fixing/recovery of two temporary shapes (triple-shape memory effect) in each region. Furthermore, the unique selective actuation functionality of the multicomposite was demonstrated, based on the principle that Fe3O4 nanoparticles and CNT can selectively induce heat in a 30 kHz alternating magnetic field and 13.56 MHz radiofrequency, respectively. Therefore, well-controlled multiple shape recoveries of the multicomposite SSMP were achieved by applying selective stimuli. This proposed approach of selective actuations can be applied to other stimuli-responsive material systems to generate complex structures for target applications.
Starting Page	24532
Ending Page	24539
Page Count	8
File Format	HTM / HTML PDF
ISSN	20507488
Volume Number	3
Issue Number	48
Journal	Journal of Materials Chemistry A
DOI	10.1039/c5ta08513f
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	DMA CNT Shape-memory polymer Composite material Carbon nanotube Differential scanning calorimetry Dynamic mechanical analysis Direct memory access Computer data storage Magnetic field
Content Type	Text
Resource Type	Article
Subject	Chemistry Renewable Energy, Sustainability and the Environment Materials Science

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