| Range |
Dry ~300MPa: Wet ~13MPa MPa
|
| Organism |
Bacteria Bacillus subtilis |
| Reference |
Thwaites JJ, Surana UC. (1991). Mechanical Properties of Bacillus subtilis Cell Walls : Effects of Removing Residual Culture Medium, 173(1), 197–203. abstract & p.199 left column 2nd paragraphPubMed ID1898920
|
| Comments |
"Typical
curves
of
stress
versus
strain
are
shown
for
tests
in
the
range
of
65
to
95%
RH [relative humidity]
(Fig.
2).
The
stress
is
equal
to
the
load
divided
by
the
average
cross-
sectional
area
before
the
test
(nominal
stress)
the
strain
is
equal
to
the
extension
divided
by
the
initial
length.
At
lower
humidity
(less
than
about
50%
RH),
the
stress
versus
strain
curves
were
approximately
straight
lines
with
much
steeper
slopes
and
smaller
extensibilities
(in
the
range
of
1
to
1.8%).
At
low
humidity,
the
strength
of
cell
wall
as
measured
was
about
300
MPa
and
its
initial
modulus
was
about
13
GPa.
These
properties
remained
fairly
constant
as
RH
was
increased
to
about
50%
and
then
fell
dramatically
with
a
further
increase
in
RH
(extrapolated
to
100%
RH)
to
values
of
about
13
MPa
and
30
MPa,
respectively." |
| Entered by |
Elad Herz |
| ID |
111168 |