scholarly journals Interfacial characterization of poly (vinyl alcohol) fibers embedded in a calcium phosphate cement matrix: An experimental and numerical investigation

2019 ◽  
Vol 96 ◽  
pp. 582-593 ◽  
Author(s):  
Ali Paknahad ◽  
Daniela G. Petre ◽  
Sander C.G. Leeuwenburgh ◽  
Lambertus J. Sluys
Keyword(s):  
Calcium Phosphate ◽  
Numerical Investigation ◽  
Calcium Phosphate Cement ◽  
Vinyl Alcohol ◽  
Cement Matrix ◽  
Poly Vinyl Alcohol

scholarly journals Tough and injectable fiber reinforced calcium phosphate cement as an alternative to polymethylmethacrylate cement for vertebral augmentation: a biomechanical study

2020 ◽  
Vol 8 (15) ◽  
pp. 4239-4250
Author(s):  
Sónia de Lacerda Schickert ◽  
João Castro Pinto ◽  
John Jansen ◽  
Sander C. G. Leeuwenburgh ◽  
Jeroen J. J. P. van den Beucken
Keyword(s):  
Calcium Phosphate ◽  
Calcium Phosphate Cement ◽  
Vinyl Alcohol ◽  
Ex Vivo ◽  
Biomechanical Study ◽  
Poly Vinyl Alcohol ◽  
Vertebral Augmentation ◽  
Fiber Reinforced

A novel injectable calcium phosphate cement, reinforced with poly(vinyl alcohol) fibers has been developed and demonstrated in vitro and ex vivo bio-mechanical suitability for vertebral augmentation procedures.

scholarly journals Calcium phosphate cement reinforced with poly (vinyl alcohol) fibers: An experimental and numerical failure analysis

2021 ◽  
Vol 119 ◽  
pp. 458-471
Author(s):  
Ali Paknahad ◽  
Mohsen Goudarzi ◽  
Nathan W. Kucko ◽  
Sander C.G. Leeuwenburgh ◽  
Lambertus J. Sluys
Keyword(s):  
Calcium Phosphate ◽  
Failure Analysis ◽  
Calcium Phosphate Cement ◽  
Vinyl Alcohol ◽  
Poly Vinyl Alcohol

Preparation and characterization of poly(vinyl alcohol)/gum tragacanth/cellulose nanocomposite film

2021 ◽  
pp. 50672
Author(s):  
Majid Alizadeh Moghadam ◽  
Reza Mohammadi ◽  
Ehsan Sadeghi ◽  
Mohammad Amin Mohammadifar ◽  
Mohammad Nejatian ◽  
...  
Keyword(s):  
Vinyl Alcohol ◽  
Nanocomposite Film ◽  
Poly Vinyl Alcohol ◽  
Gum Tragacanth

scholarly journals Equilibrium, Thermodynamic, Reuse, and Selectivity Studies for the Bioadsorption of Lanthanum onto Sericin/Alginate/Poly(vinyl alcohol) Particles

Polymers ◽  
2021 ◽  
Vol 13 (4) ◽  
pp. 623
Author(s):  
Talles Barcelos da Costa ◽  
Meuris Gurgel Carlos da Silva ◽  
Melissa Gurgel Adeodato Vieira
Keyword(s):  
Vinyl Alcohol ◽  
Economic Value ◽  
Poly Vinyl Alcohol ◽  
Thermodynamic Quantities ◽  
High Demand ◽  
Batch System ◽  
Equilibrium Data ◽  
Selectivity Studies ◽  
Amorphous Character

In a scenario of high demand, low availability, and high economic value, the recovery of rare-earth metals from wastewater is economically and environmentally attractive. Bioadsorption is a promising method as it offers simple design and operation. The aim of this study was to investigate lanthanum bioadsorption using a polymeric bioadsorbent of sericin/alginate/poly(vinyl alcohol)-based biocomposite. Batch system assays were performed to evaluate the equilibrium, thermodynamics, regeneration, and selectivity of bioadsorption. The maximum capture amount of lanthanum at equilibrium was 0.644 mmol/g at 328 K. The experimental equilibrium data were better fitted by Langmuir and Dubinin–Radushkevich isotherms. Ion exchange mechanism between calcium and lanthanum (2:3 ratio) was confirmed by bioadsorption isotherms. Thermodynamic quantities showed that the process of lanthanum bioadsorption was spontaneous (−17.586, −19.244, and −20.902 kJ/mol), endothermic (+15.372 kJ/mol), and governed by entropic changes (+110.543 J/mol·K). The reusability of particles was achieved using 0.1 mol/L HNO3/Ca(NO3)2 solution for up to five regeneration cycles. The bioadsorbent selectivity followed the order of lanthanum > cadmium > zinc > nickel. Additionally, characterization of the biocomposite prior to and post lanthanum bioadsorption showed low porosity (9.95 and 12.35%), low specific surface area (0.054 and 0.019 m2/g), amorphous character, and thermal stability at temperatures up to 473 K. This study shows that sericin/ alginate/poly(vinyl alcohol)-based biocomposites are effective in the removal and recovery of lanthanum from water.

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