Facile fabrication of tough and biocompatible hydrogels from polyvinyl alcohol and agarose

2021 ◽  
pp. 50979
Author(s):  
Xinxin Sun ◽  
Yufei Zhao ◽  
Hui Li ◽  
Chunhui Luo ◽  
Faliang Luo
Keyword(s):  
Polyvinyl Alcohol ◽  
Facile Fabrication

Facile fabrication of polyvinyl alcohol-based hydrophobic, fluorescent film via Hantzsch reaction for broadband UV protection

2021 ◽  
Author(s):  
Hongchen Liu ◽  
Hongying Yang ◽  
Kunkun Zhu ◽  
Fang Peng ◽  
Lei Guo ◽  
...  
Keyword(s):  
Polyvinyl Alcohol ◽  
Chemical Modification ◽  
Human Health ◽  
Uv Light ◽  
Uv Protection ◽  
Hantzsch Reaction ◽  
Uv Absorbers ◽  
Traditional Preparation ◽  
Facile Fabrication

Excessive exposure to ultraviolet (UV) light is harmful to human health. However, the traditional preparation of anti-UV films through doping UV absorbers is unstable. Chemical modification of polyvinyl alcohol (PVA)...

scholarly journals Facile Fabrication of Polyvinyl Alcohol/Edge-Selectively Oxidized Graphene Composite Fibers

Materials ◽  
2019 ◽  
Vol 12 (21) ◽  
pp. 3525
Author(s):  
Taehoon Kim ◽  
Gayeong Han ◽  
Yeonsu Jung
Keyword(s):  
Tensile Strength ◽  
Polyvinyl Alcohol ◽  
Chemical Reduction ◽  
Composite Fibers ◽  
X Ray ◽  
Water Dispersible ◽  
Advantages And Disadvantages ◽  
Graphene Derivatives ◽  
The Matrix ◽  
Facile Fabrication

Graphene derivatives are effective nanofillers for the enhancement of the matrix mechanical properties; nonetheless, graphene oxide (GO), reduced GO, and exfoliated graphene all present distinct advantages and disadvantages. In this study, polyvinyl alcohol (PVA) composite fibers have been prepared using a recently reported graphene derivative, i.e., edge-selectively oxidized graphene (EOG). The PVA/EOG composite fibers were simply fabricated via conventional wet-spinning methods; thus, they can be produced at the commercial level. X-ray diffractometry, scanning electron microscopy, and two-dimensional wide-angle X-ray scattering analyses were conducted to evaluate the EOG dispersibility and alignment in the PVA matrix. The tensile strength of the PVA/EOG composite fibers was 631.4 MPa at an EOG concentration of 0.3 wt %, which is 31.4% higher compared with PVA-only fibers (480.6 MPa); compared with PVA composite fibers made with GO, which is the most famous water-dispersible graphene derivative, the proposed PVA/EOG ones exhibited about 10% higher tensile strength. Therefore, EOG can be considered an effective nanofiller to enhance the strength of PVA fibers without additional thermal or chemical reduction processes.

Facile fabrication of tough photocrosslinked polyvinyl alcohol hydrogels with cellulose nanofibrils reinforcement

Polymer ◽  
2019 ◽  
Vol 173 ◽  
pp. 103-109 ◽  
Author(s):  
Junmei Zhang ◽  
Tao Liu ◽  
Zhenzhen Liu ◽  
Qingwen Wang
Keyword(s):  
Polyvinyl Alcohol ◽  
Cellulose Nanofibrils ◽  
Facile Fabrication

scholarly journals Microfluidic Rapid Fabrication of Tunable Polyvinyl Alcohol Microspheres for Adsorption Applications

Materials ◽  
2019 ◽  
Vol 12 (22) ◽  
pp. 3712 ◽  
Author(s):  
Jianmei Wang ◽  
Xueying Wang ◽  
Pingan Zhu ◽  
Chengmin Chen ◽  
Jianchun Wang ◽  
...  
Keyword(s):  
Polyvinyl Alcohol ◽  
Internal Structure ◽  
Ph Value ◽  
Channel Structure ◽  
Uniform Size ◽  
Rapid Fabrication ◽  
Pseudo Second Order ◽  
Facile Fabrication ◽  
Value Flow ◽  
On Chip

Monodisperse polyvinyl alcohol (PVA) microspheres have been widely used for targeted drug delivery, embolization, and templates. However, the fast and facile fabrication of PVA microspheres with uniform size and internal structure and good sphericity remains a challenge. In this study, the PVA microspheres with uniformity in the size, shape, and internal structure were rapidly fabricated, using single-emulsion droplet templates by an on-chip approach. First, we designed a polydimethylsiloxane (PDMS) microfluidic chip integrated with three functional units, used for the droplet generation, mixing of reagents, and pre-curing of PVA microspheres, respectively. Then, we precisely controlled the generation of PVA aqueous droplets, mixing of reagents, and the gelation rate for the production of high-quality microspheres by adjusting the pH value, flow rate, and the channel structure. The prepared PVA microspheres are characterized with good sphericity, uniform internal structure, and narrow size distribution. The microspheres have good adsorption capacity and recyclability for small-molecule drugs, as demonstrated by the adsorption and desorption of methylene blue (MB). The adsorption behavior is well described by the pseudo-second-order model, and intraparticle diffusion is as fast as the external film diffusion.

Facile fabrication of ZrO 2 @PMMA@polysiloxane nanohybrids and their application for light diffusing films

2019 ◽  
Vol 14 (4) ◽  
pp. 349-352
Author(s):  
Xiaohai Bu ◽  
Dongxian Li ◽  
Zewu Zhang ◽  
Chaofeng Hong ◽  
Li Zhang ◽  
...  
Keyword(s):  
Facile Fabrication

Cryogels based on composition chitosan–polyvinyl alcohol: synthesis and properties

2019 ◽  
Vol 5 (4) ◽  
pp. 56-63
Author(s):  
E.V. Dikhtiaruk ◽  
◽  
V.V. Paientko ◽  
A.K. Matkovsky ◽  
Yu.N. Nichiporuk ◽  
...  
Keyword(s):  
Polyvinyl Alcohol ◽  
Alcohol Synthesis
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