TNU Journal of Science and Technology,
Journal Year:
2023,
Volume and Issue:
228(14), P. 205 - 213
Published: Nov. 15, 2023
Trong
nghiên
cứu
này,
các
hydrogel
được
tổng
hợp
từ
polyvinyl
alcohol
và
chitosan.
Glyoxal
sử
dụng
làm
chất
liên
kết
ngang
với
mục
đích
hình
thành
mạng
lưới
ba
chiều
cho
cấu
trúc
của
hydrogel.
Khả
năng
hấp
phụ
đối
ion
Cr(VI)
đã
mẫu
nồng
độ
khác
nhau
glyoxal.
Nghiên
đẳng
nhiệt
thực
hiện
ở
30oC
pH
7
mô
Langmuir
Freundlich.
Mô
giả
động
học
bậc
nhất
hai
áp
để
phụ.
Kết
quả
thấy
dữ
liệu
nghiệm
phù
hai.
Điều
này
chỉ
ra
rằng
trên
bề
mặt
bằng
lớp
phủ
đơn
theo
cơ
chế
hóa
học.
Hiệu
suất
đạt
92%
có
hàm
lượng
glyoxal
là
31%.
Ngoài
ra,
tính
cũng
khảo
sát
một
số
phương
pháp
phân
tích,
bao
gồm
quang
phổ
hồng
ngoại
biến
đổi
Fourier
(FTIR),
kính
hiển
vi
điện
tử
quét
(SEM)
phép
đo
UV-Vis.
ACS Applied Materials & Interfaces,
Journal Year:
2024,
Volume and Issue:
16(29), P. 38690 - 38701
Published: July 11, 2024
Antireflective
coatings
with
superhydrophobicity
have
many
outdoor
applications,
such
as
solar
photovoltaic
panels
and
windshields.
In
this
study,
we
fabricated
an
omnidirectional
antireflective
superhydrophobic
coating
good
mechanical
robustness
environmental
durability
via
the
spin
technique.
The
consisted
of
a
layer
phytic
acid
(PA)/polyacrylamide
(PAM)/calcium
ions
(Ca2+)
(referred
to
Binder),
composed
chitin
nanofibers
(ChNFs),
hydrophobic
methylsilanized
silica
Mosil).
transmittance
glass
slide
Binder/ChNFs/Mosil
had
5.2%
gain
at
wavelength
550
nm,
showed
water
contact
angle
high
160°
sliding
8°.
coating,
including
resistance
peeling,
dynamic
impact,
chemical
erosion,
ultraviolet
(UV)
irradiation,
temperature,
were
evaluated.
retained
excellent
capacity
self-cleaning
performance
in
harsh
conditions.
increase
voltage
per
unit
area
panel
reached
0.4
mV/cm2
compared
exposed
sunlight
intensity
54.3
×
103
lx.
This
work
not
only
demonstrates
that
ChNFs
can
be
used
raw
materials
fabricate
for
applications
but
also
provides
feasible
efficient
approach
do
so.
JOURNAL OF RENEWABLE MATERIALS,
Journal Year:
2024,
Volume and Issue:
12(4), P. 815 - 826
Published: Jan. 1, 2024
A
novel
core-shell
hydrogel
bead
was
fabricated
for
effective
removal
of
methylene
blue
dye
from
aqueous
solutions.The
core,
made
sodium
alginate-g-polyacrylamide
and
attapulgite
nanofibers,
cross-linked
by
Calcium
ions
(Ca
2+
).The
shell,
composed
a
chitosan/activated
carbon
mixture,
then
coated
onto
the
core.Fourier
transform
infrared
spectroscopy
confirmed
grafting
polymerization
acrylamide
alginate.Scanning
electron
microscopy
images
showed
structure.The
core
exhibited
high
water
uptake
ratio,
facilitating
diffusion
into
core.During
process,
first
adsorbed
shell
further
core.Adsorption
tests
that
coreshell
structure
had
larger
adsorption
capacity
than
alone.The
effectively
enhanced
to
compared
single
core.Methylene
activated
chitosan
in
residual
diffused
adsorbed.
