title: Preparation and Characterization of Polymeric Surfactants Based on Epoxidized Soybean Oil Grafted Hydroxyethyl Cellulose.
abstract: Epoxidized soybean oil (ESO) grafted hydroxyethyl cellulose (HEC) was prepared via ring-opening polymerization, in which the hydroxyl groups of HEC acted as initiators and the polymeric ESO were covalently bonded to the HEC. Hydrolysis of ESO-grafted HEC (ESO-HEC) was performed with sodium hydroxide, and the hydrolyzed ESO-HEC (H-ESO-HEC) products were characterized via Fourier transform infrared (FT-IR) and (1)H and (13)C nuclear magnetic resonance (NMR) spectroscopies, high-temperature gel permeation chromatography (HT-GPC), and differential scanning calorimetry (DSC). The results indicated that ring-opening polymerization of ESO occurred with the hydroxyl groups of HEC as initiators. The molecular weights of the H-ESO-HEC products were varied by adjusting the mass ratio of HEC and ESO. Through neutralizing the carboxylic acid of H-ESO-HEC with sodium hydroxide, novel polymeric surfactants (H-ESO-HEC-Na) were obtained, and the effects of polymeric surfactants on the surface tension of water were investigated as a function of concentration of H-ESO-HEC-Na. The H-ESO-HEC-Na was effective at lowering the surface tension of water to 26.33 mN/m, and the critical micelle concentration (CMC) value decreased from 1.053 to 0.157 g/L with increases in molecular weights of the polymeric surfactants. Rheological measurements indicated that the H-ESO-HEC-Na solutions changed from pseudoplastic property to Newtonian with increasing shear rate.
authors.affiliation: Institute of Chemical Industry of Forestry Products, Chinese Academy of Forestry , Key Laboratory of Biomass Energy and Material, National Engineering Laboratory for Biomass Chemical Utilization, Key and Laboratory on Forest Chemical Engineering, State Forestry Administration, Nanjing, Jiangsu Province 210042, China.
authors.forename: Xujuan
authors.initials: X
authors.lastname: Huang
authors.affiliation: Institute of Chemical Industry of Forestry Products, Chinese Academy of Forestry , Key Laboratory of Biomass Energy and Material, National Engineering Laboratory for Biomass Chemical Utilization, Key and Laboratory on Forest Chemical Engineering, State Forestry Administration, Nanjing, Jiangsu Province 210042, China.
authors.forename: He
authors.initials: H
authors.lastname: Liu
authors.affiliation: Institute of Chemical Industry of Forestry Products, Chinese Academy of Forestry , Key Laboratory of Biomass Energy and Material, National Engineering Laboratory for Biomass Chemical Utilization, Key and Laboratory on Forest Chemical Engineering, State Forestry Administration, Nanjing, Jiangsu Province 210042, China.|Institute of New Technology of Forestry, Chinese Academy of Forestry , Beijing 100091, China.
authors.forename: Shibin
authors.initials: S
authors.lastname: Shang
authors.affiliation: Institute of Chemical Industry of Forestry Products, Chinese Academy of Forestry , Key Laboratory of Biomass Energy and Material, National Engineering Laboratory for Biomass Chemical Utilization, Key and Laboratory on Forest Chemical Engineering, State Forestry Administration, Nanjing, Jiangsu Province 210042, China.|Institute of New Technology of Forestry, Chinese Academy of Forestry , Beijing 100091, China.
authors.forename: Xiaoping
authors.initials: X
authors.lastname: Rao
authors.affiliation: Department of Chemistry and Biochemistry, University of Michigan-Flint , Flint, Michigan 48502, United States.
authors.forename: Jie
authors.initials: J
authors.lastname: Song
mesh_terms: D002482:Cellulose / Q000031:analogs & derivatives* / Q000737:chemistry; D009682:Magnetic Resonance Spectroscopy; D008970:Molecular Weight; D058105:Polymerization; D011108:Polymers / Q000737:chemistry; D013024:Soybean Oil / Q000737:chemistry*; D017550:Spectroscopy, Fourier Transform Infrared; D013501:Surface-Active Agents / Q000737:chemistry*
chemical_list: D011108:Polymers; D013501:Surface-Active Agents; C554142:epoxidized soybean oil; D013024:Soybean Oil; D002482:Cellulose; C002283:hydroxyethylcellulose
keywords: epoxidized soybean oil; hydroxyethyl cellulose; polymeric surfactants