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Mechanical enhancement of amine‐functionalized TiO 2 reinforced polyimine composites
Author(s) -
Lv Yanting,
Lu Bo,
Zhang Si,
Li Jiayi,
Lu Guolong,
Sun Hang,
Liang Song,
Liu Zhenning
Publication year - 2018
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.46446
Subject(s) - materials science , scanning electron microscope , composite material , matrix (chemical analysis) , microsphere , surface modification , characterization (materials science) , amine gas treating , energy dispersive x ray spectroscopy , chemical engineering , nanotechnology , chemistry , organic chemistry , engineering
Polyimine vitrimers are known for their malleability, which endows these materials with properties such as self‐healing, recycling, and reshaping. To enhance the mechanical properties of the polyimine vitrimers, composites were fabricated by incorporating amine‐functionalized TiO 2 microspheres (amTiO 2 MS) into polyimine matrix. The pure polyimine matrix and polyimine composites hybridized with TiO 2 microspheres (TiO 2 MS) without surface modification were also obtained and examined as the controls in characterization. X‐ray powder diffraction, scanning electron microscopy, and energy dispersive X‐ray spectroscopy were employed to demonstrate the presence and distribution of amTiO 2 MS and TiO 2 MS in the polyimine matrices. The investigation of mechanical properties of the amTiO 2 MS enhanced polyimine composites and control samples indicated that incorporation of amTiO 2 MS and TiO 2 MS exhibited different characteristic distribution, which strongly affected the performance of the composites. The optimal filling concentration of amTiO 2 MS was found to be 3%, with which the microspheres were uniformly distributed in the polyimine matrix. The self‐healing behavior of the polyimine‐amTiO 2 ‐ X was also studied. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018 , 135 , 46446.