Abstract
In printed electronics, most of the components and
structures are printed on substrates made of synthetic
materials, such as plastics, ceramics or silicon. Here we
present a micro/nanocomposite substrate, which consists
of inorganic pigment fillers and nano-fibrillar cellulose
(NFC) and demonstrate the feasibility of the substrate
for printed electronics applications.
The composite structure can contain up to 90% pigment
filler being still mechanically stable and flexible. Heat
and pressure are used to make the surfaces smooth and
glossy with a plastic-like feel. The resulting surfaces
are smoother than the smoothest paper surface in the
market (photo paper), and the dimensional stability as a
function of moisture is significantly better than for
traditional paper. The composite sheets have a good
thermal tolerance because of high amount of stable
inorganic pigments. Additional benefit of the substrate
is its good printability. In case of the pigment-NFC
substrates, the solvent of the ink can penetrate to the
structure and there is no significant spreading of the
ink.
Two pigment types were used to address the effect of raw
materials on substrate smoothness and porosity.
Precipitated calcium carbonate (PCC) gives smoother
surface than kaolin pigment. However, the structure
formed using PCC is more porous leading to a weaker
conductivity of printed structures. The effect of
different pigment particle sizes on substrate properties
will be discussed in a more detail. We will also
demonstrate the feasibility of the pigment-NFC substrate
for printed electronic structures (RFID tags).
Characteristics of the printed structures will be
presented and compared to the ones printed on reference
plastic substrates.
The combination of a good dimensional stability with a
low surface roughness, a high thermal tolerance, low
material costs and good printability makes these
biodegradable substrates potential for printed
electronics applications. In particular, they could
replace oil-based plastics in some applications.
Original language | English |
---|---|
Title of host publication | ISN2A 2014 Proceedings |
Subtitle of host publication | 1st International Symposium on Nanoparticles/Nanomaterial and Applications |
Publication status | Published - 2014 |
MoE publication type | D3 Professional conference proceedings |
Event | 1st International Symposium on Nanoparticles/Nanomaterials and Applications, ISN2A 2014 - Lisbon, Portugal Duration: 20 Jan 2014 → 22 Jan 2014 Conference number: 1 |
Conference
Conference | 1st International Symposium on Nanoparticles/Nanomaterials and Applications, ISN2A 2014 |
---|---|
Abbreviated title | ISN2A 2014 |
Country | Portugal |
City | Lisbon |
Period | 20/01/14 → 22/01/14 |
Keywords
- pigment
- cellulose nanofibrils (CNF)
- substrate
- composite
- printed electronics
- thermal tolerance