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A Two‐Step Method for Transferring Single‐Walled Carbon Nanotubes onto a Hydrogel Substrate
Author(s) -
Imaninezhad Mozhdeh,
Kuljanishvili Irma,
Zustiak Silviya Petrova
Publication year - 2017
Publication title -
macromolecular bioscience
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.924
H-Index - 105
eISSN - 1616-5195
pISSN - 1616-5187
DOI - 10.1002/mabi.201600261
Subject(s) - carbon nanotube , self healing hydrogels , polymer , materials science , nanocomposite , nanotechnology , substrate (aquarium) , tissue engineering , scanning electron microscope , chemical engineering , dispersion (optics) , composite material , polymer chemistry , biomedical engineering , medicine , oceanography , physics , engineering , optics , geology
Carbon nanotube (CNT)‐hydrogel nanocomposites are beneficial for various biomedical applications, such as nerve regeneration, tissue engineering, sensing, or implant coatings. Still, there are impediments to developing nanocomposites, including attaining a homogeneous CNT‐polymer dispersion or patterning CNTs on hydrogels. While few approaches have been reported for patterning CNTs on polymeric substrates, these methods include high temperature, high vacuum or utilize a sacrificial layer and, hence, are incompatible with hydrogels as they lead to irreversible collapse in hydrogel structure. In this study, a novel two‐step method is designed to transfer CNTs onto hydrogels. First, dense CNTs are grown on quartz substrates. Subsequently, hydrogel solutions are deposited on the quartz‐grown CNTs. Upon gelation, the hydrogel with transferred CNTs is peeled from the quartz. Successful transfer is confirmed by scanning electron microscopy and indirectly by cell attachment. The efficient transfer is attributed to π‐interactions pregelation between the polymers in solution and the CNTs.