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The Effect of HPMC and CNC on the Structure and Properties of Alginate Fibers
Meiyu Ci,Jie Liu,Shenglong Shang,Zhiming Jiang,Ping Zhu,Shuying Sui 한국섬유공학회 2020 Fibers and polymers Vol.21 No.10
Bio-composite alginate fibers with binary and ternary blends were prepared by using cellulose nanocrystal (CNC)and hydroxypropyl methylcellulose (HPMC) as composite fillers through wet-spinning method. Structural, thermal,mechanical properties and surface morphology of fibers were characterized by Fourier transform infrared spectroscopy (FTIR),X-ray diffraction (XRD), Thermogravimetric Analysis (TGA), Mechanical strength testing, Scanning ElectronMicroscopy (SEM). The thermal stability and mechanical performance of SA/HPMC and SA/HPMC/CNC composite fibersimproved as the increasing of crystallinity and intermolecular H-bonding interaction of the fibers. HPMC is helpful toimprove the extensibility and stiffness of alginate fibers, and CNC can further enhance the stiffness of SA/HPMC compositefibers. The tensile strength, elongation at break, the initial modulus and work at break of SA/HPMC/CNC composite fiberswere superior to those of alginate fibers. Roughness of surface and tensile section of SA/HPMC and SA/HPMC/CNCcomposite fibers got increased. Water absorbency and salt resistance were significantly improved.