title: Synthesis of 2-alkenyl-3-butoxypropyl guar gum with enhanced rheological properties.
abstract: A new guar gum derivative was synthesized though the nucleophilic substitution of sodium hydroxide-activated guar gum with n-butyl glycidyl (BGE) ether. The physicochemical properties of 2-alkenyl-3-butoxypropyl guar gum (ABPG) were characterized by attenuated total reflection Fourier transform infrared spectrometry (ATR-FTIR), X-ray diffraction (XRD) and thermal gravimetric analyses (TGA). The results showed that sodium hydroxide can be effectively substituted with BGE to form the ABPG. The steady and dynamic rheological properties of the aqueous solution and ABPG gel were determined using an RS6000 rheometer. Compared with the guar gum, ABPG enhanced the thickening property and improved the solution stability. The ABPG gel exhibited good temperature resistance and shear stability properties.
authors.affiliation: Key Laboratory of Auxiliary Chemistry & Technology for Chemical Industry, Ministry of Education, Shaanxi University of Science & Technology, Xi'an, Shaanxi Province, People's Republic of China; Research Institute of Shanxi Yanchang Petroleum (group) Co., Ltd., Xi'an, Shaanxi Province, People's Republic of China. Electronic address: zhangfengsan911@126.com.
authors.forename: Fengsan
authors.initials: F
authors.lastname: Zhang
authors.affiliation: Key Laboratory of Auxiliary Chemistry & Technology for Chemical Industry, Ministry of Education, Shaanxi University of Science & Technology, Xi'an, Shaanxi Province, People's Republic of China.
authors.forename: Yiding
authors.initials: Y
authors.lastname: Shen
authors.affiliation: Research Institute of Shanxi Yanchang Petroleum (group) Co., Ltd., Xi'an, Shaanxi Province, People's Republic of China.
authors.forename: Ting
authors.initials: T
authors.lastname: Ren
authors.affiliation: Key Laboratory of Auxiliary Chemistry & Technology for Chemical Industry, Ministry of Education, Shaanxi University of Science & Technology, Xi'an, Shaanxi Province, People's Republic of China.
authors.forename: Lei
authors.initials: L
authors.lastname: Wang
authors.affiliation: Key Laboratory of Auxiliary Chemistry & Technology for Chemical Industry, Ministry of Education, Shaanxi University of Science & Technology, Xi'an, Shaanxi Province, People's Republic of China.
authors.forename: Ying
authors.initials: Y
authors.lastname: Su
mesh_terms: D000475:Alkenes / Q000737:chemistry*; D060326:Chemistry Techniques, Synthetic; D005685:Galactans / Q000138:chemical synthesis* / Q000737:chemistry*; D008351:Mannans / Q000138:chemical synthesis* / Q000737:chemistry*; D008970:Molecular Weight; D053149:Plant Gums / Q000138:chemical synthesis* / Q000737:chemistry*; D012212:Rheology; D013696:Temperature; D014867:Water / Q000737:chemistry
chemical_list: D000475:Alkenes; D005685:Galactans; D008351:Mannans; D053149:Plant Gums; D014867:Water; C007894:guar gum
keywords: Guar gum; Hydrophobic modification; N-butyl glycidyl ether; Rheological properties