Physicochemical surface properties of bacterial cellulose/polymethacrylate nanocomposites: an approach by inverse gas chromatography
authors Faria, M; Vilela, C; Silvestre, AJD; Deepa, B; Resnik, M; Freire, CSR; Cordeiro, N
nationality International
journal CARBOHYDRATE POLYMERS
author keywords Bacterial cellulose; Nanocomposites; Poly(glycidyl methacrylate); Poly(poly(ethylene glycol) methacrylate); Surface properties; Inverse gas chromatography
keywords CELLULOSE; NANOCELLULOSE; POLYMERIZATION; MICROSPHERES; COMPOSITES; MEMBRANES; ACID
abstract Nanocomposites of poly(glycidyl methacrylate) and bacterial cellulose (BC), or poly(poly(ethylene glycol) methacrylate) and BC were produced via the in-situ polymerization of methacrylic monomers, inside the BC 3D network. The nanocomposites surface properties were evaluated by inverse gas chromatography (IGC). The dispersive component of surface energy (gamma(d)(s)) varied between 35.64 - 83.05 mJ M-2 at 25 degrees C. The surface of the different nanocomposites has a predominant basic character (K-b/K-a = 4.20-4.31). Higher specific interactions with polar probes were found for the nanocomposite bearing pendant epoxide groups, that apart from the low surface area (S-BET = 0.83 m(2) g(-1)) and monolayer capacity (n(m) = 2.18 mu mol g(-1)), exhibits a high value of gamma(d)(s) (88.19 mJ M-2 at 20 degrees C). These results confirm the potential of IGC to differentiate between nanocomposites with different surface functional groups and to predict their potential interactions with living tissues, body fluids and other materials.
publisher ELSEVIER SCI LTD
issn 0144-8617
year published 2019
volume 206
beginning page 86
ending page 93
digital object identifier (doi) 10.1016/j.carbpol.2018.10.110
web of science category Chemistry, Applied; Chemistry, Organic; Polymer Science
subject category Chemistry; Polymer Science
unique article identifier WOS:000452982700011
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