Photochemical crosslinking of ethylene-vinyl-acetate and ethylene-propylene-diene terpolymer blends

Khan, Ferdous; Kwek, Diana; Kronfli, E.; Ahmad, S. R.

doi:10.1016/j.polymdegradstab.2008.03.019

Cited by 2 publications

(1 citation statement)

References 17 publications

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“…They illustrate that click cross-linking greatly enhanced both the tensile strength and Young's modulus of so-formed WPU film via crosslinking and the restriction of the mobility of the polymer chains. 37 Specifically, the figures represent a fivefold increase for tensile strength and a tenfold increase for the Young's modulus of WPU-click films, when compared to those of WPU films, while WPU-N 3 /Al films did not bring significant improvement in mechanical strength ( Figure 4B). Although the elongation rate at break of WPUclick film decreased compared to that of WPU and WPU-N 3 /Al film, it was still higher than 300% ( Figure 4C).…”

Section: Polymer Propertiesmentioning

confidence: 93%

Click Cross-Linking-Improved Waterborne Polymers for Environment-Friendly Coatings and Adhesives

Peng

Guo³

et al. 2016

ACS Appl. Mater. Interfaces

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Waterborne polymers, including waterborne polyurethanes (WPU), polyester dispersions (PED), and polyacrylate emulsions (PAE), are employed as environmentally friendly water-based coatings and adhesives. An efficient, fast, stable, and safe cross-linking strategy is always desirable to impart waterborne polymers with improved mechanical properties and water/solvent/thermal and abrasion resistance. For the first time, click chemistry was introduced into waterborne polymer systems as a cross-linking strategy. Click cross-linking rendered waterborne polymer films with significantly improved tensile strength, hardness, adhesion strength, and water/solvent resistance compared to traditional waterborne polymer films. For example, click cross-linked WPU (WPU-click) has dramatically improved the mechanical strength (tensile strength increased from 0.43 to 6.47 MPa, and Young's modulus increased from 3 to 40 MPa), hardness (increased from 59 to 73.1 MPa), and water resistance (water absorption percentage dropped from 200% to less than 20%); click cross-linked PED (PED-click) film also possessed more than 3 times higher tensile strength (∼28 MPa) than that of normal PED (∼8 MPa). The adhesion strength of click cross-linked PAE (PAE-click) to polypropylene (PP) was also improved (from 3 to 5.5 MPa). In addition, extra click groups can be preserved after click cross-linking for further functionalization of the waterborne polymeric coatings/adhesives. In this work, we have demonstrated that click modification could serve as a convenient and powerful approach to significantly improve the performance of a variety of traditional coatings and adhesives.

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Section: Polymer Propertiesmentioning

confidence: 93%