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TOMSK, Jul
9 – RIA Tomsk. Scientists of Tomsk Polytechnic University (TPU) received
biodegradable polymer with properties of piezoelectric material: it is capable
to intensify growth of living cells by means of electroimpulses and to be
dissolved in organism, material can be applied to production of bone implants
and wound bandages, is reported on website of university.
It is specified
that new material was received by scientists of Research Center for Physical
Materials Science and Composite Materials of TPU. Results of the research are
published in the Materials Letters magazine.
It is noted
that piezoelectric materials are capable to make a charge without external
power source. The electric impulse arising at interaction of this charge with a
cell membrane charge stimulates growth of cages and regeneration of fabrics.
However the strongest piezoelectric materials are non-degradable and not
capable to be dissolved in an organism to take such implants, repeated
operation is necessary.
"We
offered a hybrid material connecting two polymers – degradable
polyhydroxybutyrate and a piezoelectric material polyaniline. The experimental
part of work showed that for giving to material of properties of a
piezoelectric material, for increase of piezoconstants several times, is enough
to add only 2% of polyaniline of lump", – the participant of the research
team Roman Chernozem is quoted in the message.
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It is noted
that polytechnics dissolved initial materials then received the hybrid polymer
by method of electroformation representing an interlacing of fibers from
solution. Addition of polyaniline led to improvement of mechanical properties –
polymer lasts better. It is important, for example, at production of wound
bandages. Also the polymer can be applied as material to bone implants for
replacement of bone defects and restoration of nerves.
"Advantage
of polymers against piezoelectric ceramics used in medicine, is in their
mechanical properties they are elastic. A surgeon can cut off "patch"
for bone defect of the specific patient with scissors", – Chernozem adds.