title: Preparation and properties of environmental-friendly coatings based on carboxymethyl cellulose nitrate ester & modified alkyd.
abstract: Amphipathic coating basic film-forming material carboxymethyl cellulose nitrate ester (CMCN) was synthesized and characterizations of CMCN with different ratio of functional groups were studied. Ratios of functional groups on each repeating units of CMCN have great importance in the decision of CMCN properties using as an amphipathic coating basic film-forming material and ratios of functional groups were the most concerned of the study. Ratios of functional groups on each repeating units of CMCN were measured by elemental analyzer and calculated. Series of experiments were conducted using different ratios of functional groups of CMCN. Thermal properties of CMCN were measured by FT-IR and TG. Densities of CMCN powders were measured. Aqueous coatings based on CMCN/alkyd (after chemical modified by coconut oil) were prepared and morphology & rheology of CMCN hydrophilic dispersions were measured using an Anton-Paar-Strasse 20A-8054 Graz analyzer. Contact angles between films based on CMCN and deionized water were recorded. Other properties of films were measured. CMCN with the etherification of carboxymethyl groups at 0.35-0.40, nitrate ester groups at 1.96-2.19 and hydroxyl groups at 0.46-0.64 per d-glucose was considered as the best film forming material.
authors.affiliation: Beijing Institute of Technology, Beijing Engineering Research Center of Cellulose and Its Derivatives, Beijing 100081, PR China; North Century Cellulose Technology Research & Development Co., Ltd., Beijing 100081, PR China.
authors.forename: Hongtao
authors.initials: H
authors.lastname: Duan
authors.affiliation: Beijing Institute of Technology, Beijing Engineering Research Center of Cellulose and Its Derivatives, Beijing 100081, PR China; North Century Cellulose Technology Research & Development Co., Ltd., Beijing 100081, PR China. Electronic address: shaoziqiang@263.net.
authors.forename: Ziqiang
authors.initials: Z
authors.lastname: Shao
authors.affiliation: Beijing Institute of Technology, Beijing Engineering Research Center of Cellulose and Its Derivatives, Beijing 100081, PR China; North Century Cellulose Technology Research & Development Co., Ltd., Beijing 100081, PR China.
authors.forename: Ming
authors.initials: M
authors.lastname: Zhao
authors.affiliation: Beijing Institute of Technology, Beijing Engineering Research Center of Cellulose and Its Derivatives, Beijing 100081, PR China; North Century Cellulose Technology Research & Development Co., Ltd., Beijing 100081, PR China.
authors.forename: Zhenwen
authors.initials: Z
authors.lastname: Zhou
mesh_terms: D002266:Carboxymethylcellulose Sodium / Q000737:chemistry*; D004952:Esters / Q000737:chemistry*; D005079:Excipients / Q000737:chemistry*; D009566:Nitrates / Q000737:chemistry*; D017550:Spectroscopy, Fourier Transform Infrared
chemical_list: D004952:Esters; D005079:Excipients; D009566:Nitrates; D002266:Carboxymethylcellulose Sodium
keywords: Alkyd (modified by coconut oil); Carboxymethyl cellulose nitrate ester; Coatings; Water-borne suspension