Article (Scientific journals)
Evaluation of hydroxyapatite texture using CTAB template and effects on protein adsorption
Monteiro, Ana; Idczak, Gaëlle; Tilkin, Rémi et al.
2021In Surfaces and Interfaces, 27, p. 101565
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Keywords :
hydroxyapatite; CTAB surfactant; protein adsorption; bone reconstruction; trypsin inhibitor; DLS technique
Abstract :
[en] This work aims to optimize the texture properties of hydroxyapatite (HA) in view to adopt them as biopharmaceutical drug delivery carrier. For this purpose, cetrimonium bromide (CTAB) has been adopted as a nanotemplate. The micellization behavior of this cationic surfactant has been studied within conditions simulating HA synthesis in order to better understand and control its aggregation behavior during HA synthesis. Micelle formation and their size have been monitored by dynamic light scattering (DLS) in the presence of phosphate ions, adopting different CTAB concentrations. Interestingly, distinct populations of CTAB aggregates have been distinguished in the autocorrelation curves derived from DLS analysis. The influence of CTAB aggregation during HA synthesis has been assessed by comparing the purified inorganic powders by FTIR, XRD, TGA, BET and TEM analysis. The evolution of the size and shape of HA nanoparticles visualized under TEM has been closely correlated to the change in specific surface area, which has considerably increased (up to 150 m2 .g− 1 ) in a narrow range of CTAB concentration. Soybean trypsin inhibitor (STI) was adopted as a model of bone morphogenic protein. Its loading capacity, release rate in vitro and its stability were correlated to the HA nanotexture.
Disciplines :
Materials science & engineering
Biotechnology
Author, co-author :
Monteiro, Ana ;  Université de Liège - ULiège > CEIB
Idczak, Gaëlle;  Université de Liège - ULiège
Tilkin, Rémi;  Centre de recherches Centexbel
Vandeberg, Romain ;  Université de Liège - ULiège > CEIB
Vertruyen, Bénédicte  ;  Université de Liège - ULiège > Département de chimie (sciences) > Chimie inorganique structurale
Lambert, Stéphanie  ;  Université de Liège - ULiège > Department of Chemical Engineering > Nanomaterials, Catalysis, Electrochemistry
Grandfils, Christian ;  Université de Liège - ULiège > Département des sciences biomédicales et précliniques > Biochimie et physiologie générales, et biochimie humaine
Language :
English
Title :
Evaluation of hydroxyapatite texture using CTAB template and effects on protein adsorption
Publication date :
2021
Journal title :
Surfaces and Interfaces
eISSN :
2468-0230
Publisher :
Elsevier, Amsterdam, Netherlands
Volume :
27
Pages :
101565
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 19 January 2022

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