Biodegradable Polymer Composites Based on Poly(butylene succinate) Copolyesters and Wood Flour
Polymers,
Год журнала:
2025,
Номер
17(7), С. 883 - 883
Опубликована: Март 26, 2025
This
study
investigates
the
biodegradation
behavior
of
poly(butylene
succinate)
(PBS)
copolyesters
containing
dilinoleic
acid
(DLA)
co-monomeric
units
and
wood
flour
(WF)
as
a
filler.
PBS-DLA
is
segmented
thermoplastic
elastomer
(TPE),
where
soft
amorphous
phase
formed
by
DLA
ester
segments,
while
hard
consists
crystallizable
PBS
domains.
Wood-plastic
composites
(WPCs)
were
prepared
with
WF
at
weight
fractions
10%,
20%,
30%,
40%
wt.
analyzed
in
terms
surface
morphology,
chemical
structure,
mechanical
performance,
thermal
stability
before
after
soil
conditions.
The
results
microscopic
analysis
confirmed
that
copolymer
its
undergo
manifested
increased
roughness
microcrack
formation,
particularly
higher
content.
ATR
FT-IR
spectroscopy
indicated
oxidation
hydrolysis,
supporting
hypothesis
progressive
erosion.
Mechanical
tests
showed
decline
tensile
strength
elongation
break,
most
pronounced
changes
20%
WF.
Thermal
(DSC,
DMTA,
TGA)
retains
elastomeric
3-month
experiment.
storage
modulus
(E')
remained
stable,
only
minor
variations
melting
crystallization
temperatures
observed.
These
findings
reinforce
erosion
rather
than
bulk
degradation
mechanism.
Given
their
biodegradability
retained
behavior,
WPC
based
on
copolyester
could
be
promising
for
eco-friendly
applications
controlled
desirable,
such
packaging,
agriculture,
or
biodegradable
consumer
goods.
Язык: Английский
Drinking Water Network as a Potential Pathway for Micro- and Nanoplastics Exposure to Human: A Mini Review
Water,
Год журнала:
2025,
Номер
17(8), С. 1188 - 1188
Опубликована: Апрель 15, 2025
The
risk
of
human
exposure
to
micro-
and
nanoplastics
(MNPs)
has
received
increasing
attention
in
recent
years.
Consumption
drinking
water
is
a
significant
route
MNPs.
While
previous
studies
focus
on
MNPs
treated
wastewater
or
final
effluent,
research
addressing
networks
(DWNs)
as
potential
secondary
sources
remains
sparse.
However,
how
DWN,
critical
component
transporting
from
treatment
plants
consumers,
contributes
contamination
underexplored
existing
studies.
We
extracted
keywords
reviewed
literature
using
bibliometric
methods
conducted
correlation
analyses,
revealing
four
clusters:
baseline
detection,
health
assessments,
nanoplastic,
treatment.
abundance
DWN
ranged
0.01
1.4
items/L.
varied
between
679.5
4.5
×
107
items/kg
when
calculated
based
sample
mass
(in
scales
debris).
Based
the
shape
polymer
composition
MNPs,
strongly
suspected
contribute
tap
water.
also
main
mechanisms
for
formation
release
pipelines,
including
mechanical
forces,
hammer
effects,
chemical
aging.
Our
review
highlighted
current
gaps
MNP
DWN.
It
will
understanding
contribution
provide
framework
future
monitoring
efforts.
Язык: Английский