title: Hydrogen bonds of sodium alginate/Antarctic krill protein composite material.
abstract: Sodium alginate/Antarctic krill protein composite material (SA/AKP) was successfully obtained by blending method. The hydrogen bonds of SA/AKP composite material were analyzed by Fourier transform infrared spectroscopy (FT-IR) and Nuclear magnetic resonance hydrogen spectrum (HNMR). Experiment manifested the existence of intermolecular and intramolecular hydrogen bonds in SA/AKP system; strength of intermolecular hydrogen bond enhanced with the increase of AKP in the composite material and the interaction strength of hydrogen bonding followed the order: OH…Ether O>OH…π>OH…N. The percentage of intermolecular hydrogen bond decreased with increase of pH. At the same time, the effect of hydrogen bonds on properties of the composite material was discussed. The increase of intermolecular hydrogen bonding led to the decrease of crystallinity, increase of apparent viscosity and surface tension, as well as obvious decrease of heat resistance of SA/AKP composite material. SA/AKP fiber SEM images and energy spectrum showed that crystallized salt was separated from the fiber, which possibly led to the fibrillation of the composite fibers.
authors.affiliation: Dalian Polytechnic University, Liaoning 116034, PR China.
authors.forename: Lijun
authors.initials: L
authors.lastname: Yang
authors.affiliation: Dalian Polytechnic University, Liaoning 116034, PR China; Liaoning Engineering Technology Research Center of Function Fiber and Its Composites, Dalian Polytechnic University, Dalian 116034, PR China. Electronic address: guojing8161@163.com.
authors.forename: Jing
authors.initials: J
authors.lastname: Guo
authors.affiliation: Dalian Polytechnic University, Liaoning 116034, PR China.
authors.forename: Yue
authors.initials: Y
authors.lastname: Yu
authors.affiliation: Dalian Polytechnic University, Liaoning 116034, PR China.
authors.forename: Qingda
authors.initials: Q
authors.lastname: An
authors.affiliation: Shenyang University of Technology, Liaoning 111003, PR China.
authors.forename: Liyan
authors.initials: L
authors.lastname: Wang
authors.affiliation: Dalian Polytechnic University, Liaoning 116034, PR China.
authors.forename: Shenglin
authors.initials: S
authors.lastname: Li
authors.affiliation: Dalian Polytechnic University, Liaoning 116034, PR China.
authors.forename: Xuelin
authors.initials: X
authors.lastname: Huang
authors.affiliation: Dalian Polytechnic University, Liaoning 116034, PR China.
authors.forename: Siyang
authors.initials: S
authors.lastname: Mu
authors.affiliation: Dalian Polytechnic University, Liaoning 116034, PR China.
authors.forename: Shanwei
authors.initials: S
authors.lastname: Qi
mesh_terms: D000464:Alginates / Q000737:chemistry*; D000818:Animals; D000864:Antarctic Regions; D060829:Arthropod Proteins / Q000737:chemistry*; D001672:Biocompatible Materials / Q000737:chemistry*; D033201:Euphausiacea / Q000737:chemistry*; D020723:Glucuronic Acid / Q000737:chemistry; D006603:Hexuronic Acids / Q000737:chemistry; D006860:Hydrogen Bonding; D009682:Magnetic Resonance Spectroscopy; D017550:Spectroscopy, Fourier Transform Infrared; D013500:Surface Tension; D014783:Viscosity
chemical_list: D000464:Alginates; D060829:Arthropod Proteins; D001672:Biocompatible Materials; D006603:Hexuronic Acids; D020723:Glucuronic Acid
keywords: Composite fiber; Derivative infrared spectra; Hydrogen bond; Sodium alginate; The Antarctic krill protein