Abstract
The poly(vinyl butyral) (PVB) is a resin that is used in areas where strong adhesion, optical transparency, multi-surface adhesion, hardness and flexibility are required. The purpose of this research is to cross-link the bonds in this polymer by benzoyl peroxide as a type of peroxide. The oxygen-oxygen bond of benzoyl peroxide was fragmented to produce two radicals by heating, and a hydrogen atom was separated from the hydroxyl group, and subsequently, the reaction of oxygen radical to acetylated carbon in the vinyl butyral monomer and forming a cross-link had happened. The properties of the cross-linked polymer were investigated and compared with linear polymer. Chemical identification tests such as Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction pattern (XRD), scanning electron microscope (SEM) and differential scanning calorimeter (DSC), also mechanical tests including, Shore D Hardness test, impact and tensile test were applied. Through characterization and physical tests, it can be concluded that the cross-linked polymer had more resistance and can distribute the impact force better, endured more stress and also exhibited greater toughness, denser in color, more adhesion, and higher crystallinity than the linear polymer.
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Abdouss, M., Shokri, A. & Yaghoubi, S.H.S. Cross-Linking in the Molecular Structure of Poly(vinyl butyral) and Properties Investigation. Russ J Appl Chem 94, 1614–1623 (2021). https://doi.org/10.1134/S1070427221120077
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DOI: https://doi.org/10.1134/S1070427221120077