Submit Manuscript | http://medcraveonline.com
Abbreviations: DBS, dodecylbenzene sulfonate; PDMS, poly-
dimethylsiloxanes; PEG, polyethyleneglycol; PLA, polylactic acid;
PLGA, poly (lactic-co-glycoid acid); PNIPAAm, poly (N-isopropy-
-lacrylamide); PPy, poly pyrrole; PS, poly styrene; PSS, polysodium
styrene sulfonate; QAS, quaternary ammonium salt; SAM, self-as-
sembled monolayers; PDMS, polydimethylsiloxane
Introduction
The aim of this mini review was zoom in the perspective and
feasible methods to produce nanopatterned polymers surfaces and to
collect their some properties. This has opened new possibilities for
making affordable polymer products with functional nanopatterned
surfaces.
While a variety of approaches to create hydrophobic/
superhydrophobic surfaces have been developed,
1–5
there are still
restrictions on their widespread use due to the cost, number of processing
steps, limits on the manufacturable area, durability, instrumentation
required, etc. This has led to the development of inexpensive and
reliable techniques for the commercial production of hydrophobic
layers. Electrochemical methods have been used to prepare a Ni
based nanostructured surface coupled with a polydimethylsiloxane
(PDMS) monolayer using spin – coating.
6
The surface hydrophobicity
increased by about 30% in comparison to the Ni surface only and
could be modifed to enhance the adhesion of ordered biomolecules or
the self-assembly of monolayers. Alternative simple methods included
the fabrication of a shark-skin-like patterned PDMS modifed with
carbon nanotubes to form a polymeric superhydrophobic flm.
7
A high
viscosity paste (comprised of 10 wt % multi walled carbon nanotubes
dispersed into PDMS) was placed between two rollers, and the paste
was transferred as a smooth flm (with less than 300nm roughness)
onto the roll with the high rotational speed.
7
A spin-coating method
has been used to form a biomimetic interface from melanin whose
electric signal transduction can be modifed.
8
High density plasma
processing was employed to create a nanotextured superhydrophobic
transparent poly (methyl methacrylate) surface.
9
By appropriate
tuning of the plasma conditions, either random or ordered hierarchical
structures of high aspect ratio and surface area could be reproducibly
created. Such plasma treated polymeric surfaces have been evaluated
as substrates for effciently controlling the wettability, biomolecules
immobilization, and cell adhesion of the surface, paving the way
to a wide spectrum of applications. A three-dimensional plasma
micro-nanotextured cyclo-olefn-polymer surfaces has been used for
biomolecules immobilization because of its environmentally stable
superhydrophobic and superoleophobic properties.
10
Plasmas could
also be used to deposit fuorocarbons on a cyclo-olefn polymer to
enhance hydrophobicity
11
with good adhesion and effective surface
protection reducing plastic deformation. A micro reactive ion-etching
method has been used to prepare nanotextured flms from PDMS for
enhanced cancer cell isolation.
12
Slippery liquid-infused porous surfaces show great promise for
preventing bioflm formation owing to their low surface energy in
combination with their self-cleaning properties.
13
Li and co-workers
demonstrated a novel hydrophobic liquid-infused porous poly (butyl
methacrylate-co-ethylene dimethacrylate) surface with bacteria-
resistance in BM2 mineral, which had medium and long-term stability
in aqueous environments with Pseudomonas aeruginosa.
13
Highly enhanced solid-state thermochromism was observed
in regio-regular poly (3-hexylthiophene) when deposited on a
superhydrophobic polymer-SiO
2
nanocomposite coating without
reducing the superhydrophobicity.
14
Peng et al.
15
have quantifed
the volume and surface hydrophilicity of a range of water-
swollen dense polymer brushes as a function of temperature. They
used thermo responsive poly (N-isopropylacrylamide) and poly
(di(methoxyethoxy) ethyl methacrylate), strongly hydrophilic
poly (N, N-dimethylacrylamide) and poly (oligo (ethylene glycol)
methacrylate), and weakly hydrophilic poly (2-hydroxyethyl
MOJ Poly Sci. 2017;1(4):141‒145. 141
© 2017 Orinak et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which
permits unrestricted use, distribution, and build upon your work non-commercially.
Functionality of nanopatterned polymer surfaces
Volume 1 Issue 4 - 2017
Orinak A,
1
Orinakova R,
1
Macko J,
1,2
Petrus
O,
1
Levoca S
1
1
Department of Physical Chemistry, University of P J Safarik in
Kosice, Slovakia
2
Department of Physical and Theoretical Chemistry, Komensky
University Bratislava, Slovakia
Correspondence: Orinak A, University of P J Safarik in Kosice,
Srobarova 2, Kosice, Slovakia, Tel 004210552342321,
Email andrej.orinak@upjs.sk
Received: April 17, 2017 | Published: August 28, 2017
Abstract
The different methods of the nanopatterning of polymer layers, UV laser ablation,
plasma depositing technique, electrochemical deposition and soft lithography are
discussed as methods of surface patterning. The different surface functionalities
are described, especially the effects of increased surface hydrophobicity/
superhydrophobicity created by coating substrates with low surface energy material
coupled with controlling the polymer surface roughness at both micro- and nano-
scale, with many of these hydrophobic layers representing bio-inspired surfaces.
Cell adhesion onto nanopatterned polymer surfaces, bacteria and biomolecules
immobilization, and cancer cell isolation are discussed as switchable functionalities.
A new field is self-assembled monolayers formed from polymers, which can modulate
a surface functionality from hydrophilicity to hydrophobicity, forming highly ordered
molecular structures to bind different biomolecules and to create stimuli-responsive
polymer systems. These polymers have the potential to tune surface wettability to
a desired level with a controlled surface structure and smoothness. Examples are
described of rotaxenes which are polymeric self-assembled monolayers which can
form molecular devices/nanodevices.
Keywords: nanopatterning, polymer, surface, functionality
MOJ Polymer Science
Mini Review
Open Access