RSC Advances,
Год журнала:
2021,
Номер
11(39), С. 24206 - 24216
Опубликована: Янв. 1, 2021
The
introduction
of
phosphate
groups
into
cellulosic
fibers
allows
for
the
tuning
their
fire
resistance,
chelating
and
metal-adhesion
properties,
enabling
development
flame-retardant
adhesive
adsorbent
materials.
Toward
that
end,
major
challenge
is
developing
a
novel
efficient
environmentally
friendly
phosphorylation
route
offers
an
alternative
to
existing
methods,
which
can
achieve
targeted
properties.
For
this
purpose,
were
chemically
modified
herein
using
solid-state
with
phosphoric
acid
urea
without
causing
substantial
damage
fibers.
morphological,
physicochemical,
structural
thermal
characterisations
examined
FQA,
SEM,
EDX,
FTIR,
13C/31P
NMR,
conductometric
titration,
zeta
potential
measurement
thermogravimetric
analysis.
All
converge
towards
crosslinked
polyanion
structure,
about
20
wt%
grafted
phosphates,
nitrogen
content
5
very
high
charge
density
6608
mmol
kg-1.
Phosphate
are
linked
cellulose
through
P-O-C
bond
in
form
orthophosphate
pyrophosphates.
Furthermore,
properties
phosphorylated
investigated
new
degradation
mechanism
was
proposed.
Advanced Materials,
Год журнала:
2022,
Номер
34(46)
Опубликована: Янв. 11, 2022
Abstract
Mechanochemistry
with
solvent‐free
and
environmentally
friendly
characteristics
is
one
of
the
most
promising
alternatives
to
traditional
liquid‐phase‐based
reactions,
demonstrating
epoch‐making
significance
in
realization
different
types
chemistry.
utilizes
mechanical
energy
promote
physical
chemical
transformations
design
complex
molecules
nanostructured
materials,
encourage
dispersion
recombination
multiphase
components,
accelerate
reaction
rates
efficiencies
via
highly
reactive
surfaces.
In
particular,
mechanochemistry
deserves
special
attention
because
it
capable
endowing
materials
unique
properties.
Herein,
latest
advances
progress
for
preparation
modification
are
reviewed.
An
outline
basic
knowledge,
methods,
mechanochemical
strategies
presented,
distinguishing
this
review
from
reviews
that
only
focus
on
ball‐milling.
Next,
followed
by
a
detailed
insightful
discussion
mechanochemistry‐involved
conversion
storage
applications.
The
comprehensively
covers
aspects
mechanical/optical/chemical
electrical
energy.
Finally,
next‐generation
advanced
proposed.
This
intended
bring
frontline
guide
burgeoning
field
interdisciplinary
research
developing
greener
force.
ACS Sustainable Chemistry & Engineering,
Год журнала:
2024,
Номер
12(33), С. 12670 - 12682
Опубликована: Авг. 8, 2024
The
demand
to
produce
durable
multifunctional
cotton
fabrics
without
detrimental
effects
on
the
environment
is
increasing.
Herein,
a
fabric
(cotton-APP/LP)
designed
and
prepared
through
covalently
grafting
phosphorylated
lignin
(LP)/ammonium
polyphosphate
(APP)
onto
surface,
presenting
UV
protection,
photothermal
conversion,
fire
safety,
antibacterial
properties.
preparation
of
LP
adopted
green
mechanochemical
method,
whole
treatment
process
organic
solvent-free.
possesses
excellent
free-radical
absorption
capacity,
cotton-APP/LP
achieves
protection
factor
value
421.97.
Under
xenon
lamp
simulated
irradiation,
exhibits
temperature
approximately
63.4
°C
at
light
intensity
150
mW
cm–2,
robust
conversion
effect.
antimicrobial
properties
(inhibition
Escherichia
coli
Staphylococcus
aureus)
are
also
achieved
for
cotton-APP/LP.
In
addition,
limiting
oxygen
index
(LOI)
increases
48.5%,
self-extinguishment
observed
in
vertical
burning
test.
After
50
washing
cycles,
self-extinguishes
LOI
reaches
31.5%,
demonstrating
durability.
This
work
realize
multifunctionality
cleaner
safer
way,
further
promoting
practical
application
fabrics.
Advanced Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 8, 2025
Abstract
Polymeric
materials
featuring
excellent
flame
retardancy
are
essential
for
applications
requiring
high
levels
of
fire
safety,
while
those
based
on
biopolymers
highly
favored
due
to
their
eco‐friendly
nature,
sustainable
characteristics,
and
abundant
availability.
This
review
first
outlines
the
pyrolysis
behaviors
biopolymers,
with
particular
emphasis
naturally
occurring
ones
derived
from
non‐food
sources
such
as
cellulose,
chitin/chitosan,
alginate,
lignin.
Then,
strategies
chemical
modifications
flame‐retardant
purposes
through
covalent,
ionic,
coordination
bonds
presented
compared.
The
is
placed
advanced
methods
introducing
biopolymer‐based
retardants
into
polymeric
matrices
fabricating
materials.
Finally,
challenges
sustaining
current
momentum
in
utilization
further
discussed.
