Effect of freeze‐drying on the properties of silk fibroin/polyvinyl alcohol/hydroxyapatite composites

2018 ◽  
Vol 40 (8) ◽  
pp. 3131-3139 ◽  
Author(s):  
Xujing Zhang ◽  
Jianping Zhou ◽  
Yan Xu

2020 ◽  
Vol 21 (3) ◽  
pp. 456-464
Author(s):  
Jhamak Nourmohammadi ◽  
Meghdad Hadidi ◽  
Masoumeh Haghbin Nazarpak ◽  
Mona Mansouri ◽  
Maede Hasannasab


2019 ◽  
Vol 11 (26) ◽  
pp. 23632-23638 ◽  
Author(s):  
Ningning Yang ◽  
Ping Qi ◽  
Jing Ren ◽  
Haipeng Yu ◽  
Shouxin Liu ◽  
...  


Polymers ◽  
2019 ◽  
Vol 11 (4) ◽  
pp. 712 ◽  
Author(s):  
Lijie Zhou ◽  
Shengcheng Zhai ◽  
Yiming Chen ◽  
Zhaoyang Xu

Under the current situation of frequent oil spills, the development of green and recyclable high-efficiency oil-absorbing aerogel materials has attracted wide attention from researchers. In this study, we report a high-strength, three-dimensional hydrophobic cellulose nanofiber (CNF)/polyvinyl alcohol (PVA)/graphene oxide (GO) composite aerogel with an anisotropic porous structure, which was fabricated by directional freeze-drying technology using anisotropically grown ice crystals as a template, followed by hydrophobic treatment with a simple dip coating process. The prepared composite aerogel presented anisotropic multi-level pore microstructures, low density (17.95 mg/cm3) and high porosity (98.8%), good hydrophobicity (water contact angle of 142°) and great adsorption capacity (oil absorption reaching 96 times its own weight). More importantly, the oriented aerogel had high strength, whose compressive stress at 80% strain reached 0.22 MPa and could bear more than 22,123 times its own weight without deformation. Therefore, the CNF/PVA/GO composite aerogel prepared by a simple and easy-to-operate directional freeze-drying method is a promising absorbent for oil-water separation.



2019 ◽  
Vol 255 ◽  
pp. 126510 ◽  
Author(s):  
Mostafa M. Sayed ◽  
Hamouda M. Mousa ◽  
M.R. El-Aassar ◽  
Nehal M. El-Deeb ◽  
Nouby M Ghazaly ◽  
...  




RSC Advances ◽  
2016 ◽  
Vol 6 (9) ◽  
pp. 7048-7060 ◽  
Author(s):  
Mohammad Azadi ◽  
Abbas Teimouri ◽  
Ghasem Mehranzadeh

β-Chitin/silk fibroin/nanohydroxyapatite (CT/SF/nHAp) composite scaffolds were synthesized using a freeze-drying method by blending β-chitin hydrogel, silk fibroin and nHAp at different inorganic/organic weight ratios.



2021 ◽  
Vol 2011 (1) ◽  
pp. 012058
Author(s):  
Qinyue Sun ◽  
Jizhu Fu ◽  
Heng Zhang ◽  
Huihui Yang ◽  
Yumin Wang ◽  
...  


Sign in / Sign up

Export Citation Format

Share Document