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
isbn	1879-1344
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