title: Characterization of the surface properties of persimmon leaves by FT-Raman spectroscopy and wicking technique.
abstract: To fit the request of developing new biomaterials using persimmon leaves as raw material, this paper reported the surface free energy and related components, e.g. the Lifshitz-van der Waals and Lewis acid-base components for persimmon leaves estimated by means of the column wicking technique. Considering this natural material might be varied of its properties with growing area, a characterization of it was initially performed by applying the FT-Raman spectroscopy. Based on the determined results, persimmon leaves have greater surface free energy, gammaS, than cellulose though it has been found rich in this component, e.g. of about 68.28%. Moreover, it was further observed that the persimmon leaves have great Lewis acid-base interactions component, gammaS(AB), contributed by the Lewis acid component, gammaS+. This suggests that the persimmon leaves are available to convert to new biomaterials expected forms.
authors.affiliation: The Central Laboratory of Material Science, Donghua University, 1882 W. Yan An Rd., 200051 Shanghai, China. sqing@eastday.com
authors.forename: Qing
authors.initials: Q
authors.lastname: Shen
authors.forename: Hong-Gui
authors.initials: HG
authors.lastname: Ding
authors.forename: Lei
authors.initials: L
authors.lastname: Zhong
mesh_terms: D002482:Cellulose / Q000737:chemistry; D003890:Desiccation; D029788:Diospyros / Q000737:chemistry*; D018515:Plant Leaves / Q000737:chemistry*; D013059:Spectrum Analysis, Raman / Q000379:methods; D013499:Surface Properties; D013816:Thermodynamics
chemical_list: D002482:Cellulose