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Polymer Chemistry 2018 Polymer Sciences
ISSN: 2471-9935 Page 24
March 26-28, 2018
Vienna, Austria
3rd Edition of International Conference and Exhibition on
Polymer Chemistry
T hanks to a good ratio between cost and performances,
plastic scintillators are now in the center of radiation
detection applications. But due to the fact that most of the
formulations were created in the 50’s, there is now a huge
incentive in creating new recipes, due to increasing need of
large scale detectors. The conversion of high energy ionisation
to a visible photons emission is called scintillation. This
process implies charge and exciton transport inside the bulk of
the plastic. Different input ionisation (alpha, beta, gamma and
neutron) give different ionisation trace and can lead to slight
modification of the emission characteristics; hence leading to
identification of the ionising particle. We are presenting here
a comprehensive model of gamma and neutron interaction
in plastic scintillators and the photophysical mechanism
associated with gamma/neutron discrimination, with a
particular emphasis on excited triplet state diffusion and
recombination inside amorphous polystyrene matrices. More
than the model, several chemical modifications of the polymer
matrix as well as additives can enhance different scintillation
properties. More particularly, addition of metal additives, high
concentration of fluorophores, modification of the polymeric
matrices and addition of cross-linking agents are essential for
specializing the plastic towards a particular application. Here,
again understanding charge and exciton transfers are central
to optimize formulation. One of the main examples is the
choices of heavy metal additives for enhancing properties. We
will present here, our work on organometallic insertion inside
plastic matrices and optimization of the formulation towards
better scintillation properties.
Biography
Bertrand Guillaume is a Researcher at CEA Saclay near Paris, in France. He
is an Organic Chemist and likes to apply chemical designs to materials sci-
ence and more particularly light/matter interaction. His areas of research
of interest include photovoltaic, organometallic and inorganic chemistry
and porous materials. He is now specializing in design and optimization of
plastic scintillator for nuclear instrumentation. His research interests include
polymer chemistry, plastic scintillator, photophysic and organometallics.
Plastic scintillator, exploration of photo-physical
properties and chemical optimisation
Bertrand Guillaume
CEA Saclay, France
Bertrand Guillaume, Polym Sci, Volume 4
DOI: 10.4172/2471-9935-C1-008