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Materials Science and Nanotechnology | Volume: 03
WORLD CONGRESS ON SMART MATERIALS AND STRUCTURES
&
3
rd
International Conference on
POLYMER CHEMISTRY AND MATERIALS ENGINEERING
November 21-22, 2019 | Singapore
Joint event on
W
ide application of polymers and derived products
is causing additional demands in their safe usage,
especially in the field of fire safety. Polyamide 6 (PA6)
represents one of the most competent high-performance
industrial polymers for the technical textile production.
The main restrain to the end-use of textile products
based on PA6 is their flammability. The strict regulation
rules exclude bio-persistent and toxic halogenated flame
retardants from the use and require application, of more
environment-friendly and sustainable flame retardants. As
a consequence, halogen-free flame retardant polyamide 6,
FR-PA6 textile filaments are still not commercially available.
In our research, we presented a new approach for
solving PA6 flammability in which flame retardant
organophosphorus functionality is introduced into the
polymer structure within copolymerisation process 1, 2.
The first step in the preparation of flame retardant PA6
co-polymer was the synthesis of co-monomer based on
9,10-dihydro-9-oxa-phosphaphenanthrene-10-oxide,
DOPO functionalized3 caprolactam. In the next step, the
introduction of 15 wt% of synthesised co-monomer in the
copolymerisation reaction with -caprolactam resulted in
obtaining of co-polymer that exhibited V0 flame retardancy
level according to UL94 vertical burning test. Co-polymer
with 10 wt% of co-monomer was used for successful textile
filament production in the melt-spinning process.
The new approach for FR-PA6 textile filaments production,
where more environment-friendly and more sustainable
flame retardant functionality is included into PA6 polymer
structure by the copolymerisation reaction, was mentioned
to be a solution for the flame retardant agglomeration
and leaching problems present in the case when flame
retardant additives are physically incorporated by melt-
compounding. The advantage of the copolymerisation
process is also the preservation of PA6 chain structure,
which provides chemical FR-PA6 recycling. Furthermore,
the possibility for obtaining co-polymer starting material
from biomass recycling enables establishment of a circular
economy.
Biography
Marija Colovic has completed her PhD at the Faculty of Chemistry and
Chemical Technology in Ljubljana in 2012 at the National Institute of
Chemistry, Department of Materials Chemistry, Ljubljana, Slovenia. She
continued her research at the synthetic resin industry as head of the R&D
analytical department. She has 11 publications that have been cited over
100 times. She is an author on the two European patent applications.
e:
marija.colovic@ki.siMarija Colovic
Jelena Vasiljević, Barbara Simončič, Nataša Čelan Korošin,
Matic Šobak, Andrej Demšar, Ivan Jerman
National Institute of Chemistry, Slovenia
Novel fibre forming flame retardant polyamide 6
Mater Sci Nanotechnol, Volume: 03