1. Effects of nano-TiO2 on bonding performance, structure stability and film-forming properties of starch-g-VAc based wood adhesive
- Author
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Zhouyi Xiong, Hanguo Xiong, Lei Chen, Asad Nawaz, Zia-ud Din, Chun Hu, Pengkai Wang, and Zhenjiong Wang
- Subjects
Thermogravimetric analysis ,Materials science ,Polymers and Plastics ,Starch ,Scanning electron microscope ,Organic Chemistry ,02 engineering and technology ,Dynamic mechanical analysis ,010402 general chemistry ,021001 nanoscience & nanotechnology ,01 natural sciences ,0104 chemical sciences ,chemistry.chemical_compound ,Differential scanning calorimetry ,chemistry ,Chemical engineering ,Materials Chemistry ,Thermal stability ,Adhesive ,Fourier transform infrared spectroscopy ,0210 nano-technology - Abstract
The nano-TiO2 was utilized to improve the bonding performance, structure stability and film-forming properties of renewable starch-based wood adhesive. The results showed that 4% nano-TiO2 (nano-TiO2:starch, w;w) resulted in 6.5 MPa of shear strength and 6437 Pa.s of viscosity. The thermal stability was measured by thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC). Additionally, low-field nuclear magnetic resonance (NMR) and rheological results exhibited the enhancement of nano-TiO2 on the pseudoplasticity and structure which determined the state and migration of water. Besides, the structural characterization of copolymer was analyzed via fourier transform infrared spectroscopy (FTIR) and X-ray diffraction analysis (XRD). Furthermore, the film-forming property was evaluated by small angle X-ray scattering (SAXS) and dynamic mechanical analysis (DMA). The morphological structures of adhesive were observed by scanning electron microscopy (SEM). In conclusion, the 4% nano-TiO2 (nano-TiO2:starch, w;w) can be employed to prepare starch-based wood adhesives with superior properties for wood application.
- Published
- 2018