ACS Applied Polymer Materials,
Год журнала:
2023,
Номер
5(8), С. 6625 - 6632
Опубликована: Авг. 1, 2023
Sunscreens
can
help
protect
the
skin
from
solar
ultraviolet
(UV)
radiation,
which
is
harmful
to
human
health.
However,
traditional
sunscreens
penetrate
skin,
raising
concerns
about
their
safety.
Therefore,
fabrication
of
a
sunscreen
with
biocompatible,
UV-shielding,
and
antioxidant
properties
pertinent.
Herein,
simple
method
involving
self-polymerization
dopamine
polydopamine
(PDA)
was
proposed
for
surface
modification
poly(vinyl
alcohol)
(PVA)
cellulose
nanocrystals
(CNCs)
fabricate
nanocrystal/polydopamine/poly(vinyl
(CNC/PDA/PVA)
hydrogels.
Compression
tests
revealed
that
CNC/PDA/PVA
hydrogel
had
compression
strength
5.0
MPa.
After
UV
exposure
2400
h,
PVA
decreased
markedly
3.5
1.5
MPa,
whereas
slightly
4.8
Mouse
embryonic
fibroblast
(NIH-3T3)
cell
experiments
showed
exhibited
excellent
biocompatibility.
A
decrease
in
residual
1,1-diphenyl-2-picrylhydrazyl
(DPPH)
content
100.0%
4.0%
implied
strong
capacity
hydrogel.
Notably,
UV–vis
spectroscopy
analysis
vivo
mouse
demonstrated
blocked
approximately
99.0%
light
prevented
UV-induced
tissue
injury,
respectively.
These
results
indicate
potential
applications
prepared
as
absorber
next-generation
antioxidative
UV-shielding
materials.
ACS Applied Polymer Materials,
Год журнала:
2022,
Номер
4(2), С. 1448 - 1456
Опубликована: Янв. 20, 2022
Hydrogels
have
drawn
intensive
attention
as
emerging
materials
for
various
applications
in
wearable
sensors,
soft
robotics,
and
implantable
devices.
However,
fabricating
hydrogels
with
UV-shielding
antioxidant
properties
still
remains
a
challenge.
Herein,
we
prepared
biocompatible
3-allyloxy-2-hydroxypropyl-lignin/polyacrylic
acid
(AHP-lignin/PAA)
self-adhesion,
conductivity,
UV
shielding,
activity
sensors
by
the
incorporation
of
lignin
into
PAA.
The
structure,
lap
shear
strength,
biocompatibility
were
characterized
using
UV–vis
spectrometer,
universal
testing
machine,
cell
test.
showed
strong
adhesion
to
substrates.
AHP-lignin/PAA
had
excellent
shielding
free
radical
scavenging
capacity.
Meanwhile,
exhibited
sensitivity
tiny
changes
low
pressure.
Notably,
could
adhere
skin
well
without
any
other
adhesives
monitor
movement
signals
body
motion
accurately.
offer
great
potential
sensors.
ACS Applied Materials & Interfaces,
Год журнала:
2022,
Номер
14(29), С. 34049 - 34058
Опубликована: Июль 18, 2022
Multifunctional
cotton
textiles
that
are
highly
breathable
desirable
in
a
broad
range
of
applications.
However,
it
is
still
big
challenge
to
scale
up
production
such
multifunctional
textiles.
Herein,
we
developed
simple,
scalable,
and
benign
strategy
fabricate
via
mild
surface
modification.
The
1,4-dihydropyridine
(DHP)
ring
gentamycin
sulfate
(GS)
molecules
were
firmly
attached
the
cellulose
chains
under
room
temperature
one-pot
method.
resulting
modified
textile
showed
integrated
performances
with
bright
fluorescence,
good
antibacterial
behavior,
hydrophobic
behavior
(contact
angle
134°),
UV-blocking
(UPF
being
69.2),
which
very
stable
toward
washing
various
solvents.
There
no
obvious
change
whiteness,
thermal
stability,
mechanical
performance
fabrics
after
What's
more,
air
permeability
fabric
was
31.3
(cm
Advanced Functional Materials,
Год журнала:
2023,
Номер
33(43)
Опубликована: Июнь 21, 2023
Abstract
Lignin
exhibits
a
long‐active
UV‐blocking
property
due
to
its
macromolecular
aromatic
structure
and
unique
semiquione‐quione‐hydroquione
transition.
However,
poor
absorbance
in
UVA
region
(320–400
nm)
irregular
aggregation
are
still
the
obstacles.
Herein,
active
spirapyrane
(SP‐Br)
is
synthesized
covalently
introduced
into
alkali
lignin
(AL)
construct
photo‐stimulated
UV‐absorbing
enhancement
sunscreen
actives
(AL‐SP
n
).
The
introduction
of
SP
significantly
improved
AL
effectively
eased.
When
optimal
AL‐SP
3
solution
exposed
UV
irradiation,
color
turned
purple,
further
as
unconjugated
transformed
conjugated
merocyanine
(MC)
structure.
light
removed,
recovered
yellow.
antioxidant
endow
reversible
SP‐MC
transformation
with
good
cyclic
stability.
As‐prepared
based
exhibit
obvious
effect.
sun
protection
factor
(SPF)
from
23
89
after
4
h
can
maintain
high
performance
for
another
8
h.
In
addition,
it
low
permeation
biocompatibily
vitro
vivo,
demonstrating
potential
practical
use.
ACS Sustainable Chemistry & Engineering,
Год журнала:
2019,
Номер
7(19), С. 15966 - 15973
Опубликована: Авг. 1, 2019
Lignin
nanospheres
with
broad-spectrum
UV
adsorption
and
excellent
antioxidant
properties
were
obtained
by
demethoxylation
of
alkali
lignin
(AL)
grafting
the
benzophenone
moiety
(UV-0)
followed
a
reverse
self-assembly.
The
critical
wavelength
(λc)
optimal
AL-UV03
sample
was
∼375
nm,
while
UVA/UVB
ratio
reached
0.84.
When
it
applied
as
unique
active
in
sun
cream,
protection
factor
value
cream
containing
10
wt
%
22.81,
which
could
further
increase
to
56.14
when
formed
colloidal
spheres
(LRCS)
size
∼130
nm.
self-assembly
process
UV-absorbing
enhancement
mechanism
LRCS
monitored
revealed
fluorescence,
UV,
light
scattering
analysis.
In
addition,
exhibited
superior
photostability
due
three-dimensional
network
structure
lignin.
activities
better
than
that
AL
continuously
dosage.
Both
good
biocompatibility.
HaCaT
cell
activity
remained
72–78%
their
concentration
high
1.0
mg/mL.
novel
blocker
show
potential
skincare
products
polymeric
materials.
Advanced Sustainable Systems,
Год журнала:
2019,
Номер
3(4)
Опубликована: Янв. 29, 2019
Abstract
Sustainable
and
environmentally
friendly
UV‐shielding
materials
offer
new
opportunities
in
the
formulation
of
next
generation
cosmetic
products.
Cinnamate‐functionalized
cellulose
nanocrystals
(Cin‐CNCs)
prepared
by
esterifying
CNCs
with
cinnamoyl
chloride
display
strong
UV
absorption
high
visible
light
transmittance.
They
are
suitable
for
use
as
nanofillers
sunscreen
transparent
polymer
films.
The
aqueous
Cin‐CNC
dispersion
is
waterborne,
alcohol‐free,
nonwhitening,
waterproof,
photo‐stable,
possesses
a
sun
protection
factor
(SPF).
SPF
more
than
twice
that
popular
commercial
at
similar
concentration.
Cin‐CNCs
can
serve
reinforcing
hydrophilic
hydrophobic
matrices.
polyvinyl
alcohol
polystyrene
films
incorporated
excellent
capacity
their
Young's
moduli
significantly
enhanced.
ACS Sustainable Chemistry & Engineering,
Год журнала:
2022,
Номер
10(17), С. 5421 - 5429
Опубликована: Апрель 21, 2022
The
natural
inspired
ultraviolet
(UV)-absorbing
function
of
lignin
has
been
widely
used
in
cosmetics
and
photothermal
materials;
however,
its
long-acting
UV-blocking
mechanism
is
still
unclear.
Herein,
three
organosolv
lignins
(OLs)
were
extracted
from
different
botanical
resources
under
mild
conditions.
These
OLs
preserved
the
native
structure
lignin,
best
one
was
chosen
to
investigate
perspective
radicals.
Results
showed
that
136%
fresh
semiquinone
(SQ)
radicals
formed
when
OL
irradiated
UV
light
for
4
h,
beyond
half
these
newly
generated
readily
after
withdrawing
irradiation.
generation
reduction
SQ
exhibited
good
photoresponsivity
cyclic
stability,
indicating
there
an
SQ-based
hydroquinone/quinone
dynamic
transformation.
After
1
h
irradiation,
radical
phenolic
hydroxyl
contents
sun
protection
factor
OL-based
sunscreen
increased
by
110,
10,
61%,
respectively.
12
antioxidant
property
only
weakened
a
little,
while
performance
better
than
initial
state.
color
darkened
at
time
then
turned
white
gradually.
This
research
paves
way
understanding
long-term
application
biomass
lignin.
