Nanoscale Horizons,
Journal Year:
2021,
Volume and Issue:
6(7), P. 505 - 542
Published: Jan. 1, 2021
Nanochitin
and
nanochitosan
are
nanowhiskers
combining
the
structural
strength
of
nanocellulose
with
versatile
chemistry
chitin/chitosan.
We
review
their
fabrication,
properties
uses,
a
focus
on
recent
progress.
Journal of the American Chemical Society,
Journal Year:
2022,
Volume and Issue:
144(5), P. 2062 - 2068
Published: Jan. 27, 2022
Diacids
are
important
monomers
in
the
polymer
industry
to
construct
valuable
materials.
Dicarboxylation
of
unsaturated
bonds,
such
as
alkenes
and
alkynes,
with
CO2
has
been
demonstrated
a
promising
synthetic
method.
However,
dicarboxylation
C─C
single
bonds
rarely
investigated.
Herein
we
report
novel
electrochemical
ring-opening
strained
rings
CO2.
Structurally
diverse
glutaric
acid
adipic
derivatives
were
synthesized
from
substituted
cyclopropanes
cyclobutanes
moderate
high
yields.
In
contrast
oxidative
ring
openings,
this
is
also
first
realization
an
electroreductive
reaction
rings,
including
commercialized
ones.
Control
experiments
suggested
that
radical
anions
carbanions
might
be
key
intermediates
reaction.
Moreover,
process
features
step
atom
economy,
mild
conditions
(1
atm,
room
temperature),
good
chemoselectivity
functional
group
tolerance,
low
electrolyte
concentration,
easy
derivatization
products.
Furthermore,
conducted
polymerization
corresponding
diesters
diols
obtain
potential
UV-shielding
material
self-healing
function
fluorine-containing
polyester,
whose
performance
tests
showed
applications.
ACS Sustainable Chemistry & Engineering,
Journal Year:
2022,
Volume and Issue:
10(18), P. 5939 - 5948
Published: April 22, 2022
Paper-based
materials
have
been
widely
used
in
packaging
replacing
nonbiodegradable
fossil-based
polymers
due
to
the
increasing
concerns
on
environmental
pollution.
However,
paper
is
hygroscopic
and
its
mechanical
strength
dramatically
reduced
presence
of
moisture.
The
current
hydrophobic
modification
via
polymer
coating
hinders
recycling
paper.
A
sustainable
approach
was
proposed
prepare
superhydrophobic
cellulose
nanocrystals
(CNCs)
by
anchoring
octadecylamine
(ODA)
surface
CNCs
self-polymerization
tannic
acid
Michael
addition/Schiff
base
reaction
between
polytannic
acid-coated
(PTA@CNCs)
ODA.
obtained
ODA–PTA@CNCs
could
be
well
dispersed
ethanol
sprayed
onto
different
substrates
form
coatings,
such
as
paper,
cotton,
polyurethane.
outstanding
superhydrophobicity
attributed
low
energy
ODA
multiscale
roughness
CNC
nanorods.
promising
applications
waterproof
paper-based
packaging,
antifouling
breathable
textile,
semipermeable
membrane,
oil–water
separation,
Janus
actuators
were
demonstrated.
Furthermore,
durability
confirmed
abrasion
washing
tests.
Overall,
are
versatile
coatings
their
facile
preparation,
biodegradability,
convenience,
durability.
Journal of Drug Delivery Science and Technology,
Journal Year:
2023,
Volume and Issue:
86, P. 104720 - 104720
Published: June 30, 2023
Ultraviolet
(UV)
radiation
is
the
primary
cause
of
various
skin
diseases,
necessitating
need
for
UV
protection.
Topical
sunscreens
are
most
commonly
used
method
to
achieve
this.
However,
traditional
sunscreen
formulations
have
limitations
that
hinder
their
widespread
use.
Thanks
advancements
in
nanotechnology,
new
nanotechnology-based
been
developed,
addressing
these
limitations.
The
review
explores
different
nanosystems
utilized
formulations,
including
polymeric
nanoparticles,
liposomes,
nanostructure
lipid
carriers,
solid
nanoemulsions,
hydrogels,
nanocrystals,
mesoporous
silica
particles,
niosomes,
ethosomes,
transfersomes,
transethosomes,
and
sunspheres.
These
enhance
safety
effectiveness
sunscreens,
improving
distribution,
photostability,
SPF,
UVA
protection,
water
resistance.
Combinational
which
combine
multiple
active
ingredients,
also
discussed.
They
offer
broad-spectrum
protection
against
UVB
radiation,
providing
comprehensive
sun
article
reviews
evaluation
methods
such
as
SPF
measures
level
while
indicates
defense
radiation.
Water
resistance
assesses
sunscreen's
durability
after
exposure
or
sweat.
Additionally,
addresses
safety,
regulation,
challenges
associated
with
nanosystem-based
sunscreens.
Safety
considerations
regulatory
frameworks
ensure
products'
human
health
environment.
Formulation
stability,
potential
toxicity
concerns,
lack
public
awareness
discussed
challenges.
In
summary,
promising
utilization
improves
efficacy.
Ongoing
research
efforts
vital
continued
development
safe
use
Journal of Materials Chemistry A,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 1, 2025
An
MXene
and
cellulose
nanocrystal
co-stabilized
Pickering
emulsion
is
developed
employed
as
a
template
to
fabricate
photothermal
phase
change
material
microcapsules
for
solar
energy
harvesting,
heat
storage
release,
thermal
management.
ACS Sustainable Chemistry & Engineering,
Journal Year:
2019,
Volume and Issue:
7(21), P. 17756 - 17767
Published: Oct. 9, 2019
Microcapsulation
of
phase
change
materials
(PCMs)
within
a
shell
is
one
the
most
feasible
methods
to
explore
their
applications
for
thermal
energy
storage.
Here,
facile
method
microencapsulate
PCMs
polystyrene/cellulose
nanocrystal
(CNC)
hybrid
via
Pickering
emulsion
polymerization
was
developed.
CNCs,
as
biobased
and
sustainable
hydrolyzed
from
wood
pulp,
were
employed
emulsifiers
PCM
components
microcapsules
well.
CNCs
displayed
high
efficiency
in
stabilization
paraffin
wax
(PW)
emulsion,
heat
capacity
stability
PW
with
CNC
(PW@CNC)
increased
dramatically
amounts
CNCs.
polystyrene
(PW@PS/CNC)
prepared
styrene
stabilized
droplets.
The
PW@PS/CNC
slurries
possessed
latent
31.9
J/g
99.4%
after
100
heating
cooling
scans.
powder
160.3
J/g,
corresponding
encapsulation
ratio
83.5%.
Moreover,
coconut
oil
(CO),
an
example
PCMs,
also
microencapsulated
(CO@PS/CNC)
similar
method.
Both
CO@PS/CNC
excellent
temperature
regulation
ability
offered
promising
potentials
storage
systems.
