Design of tough adhesive from commodity thermoplastics through dynamic crosslinking

Abstract

Dynamic crosslinking of commodity thermoplastics with multiple interfaces enables remarkably tough reversible adhesion.

High‐Strength Plus Reversible Supramolecular Adhesives Achieved by Regulating Intermolecular PtII⋅⋅⋅PtIIInteractions

“…Pt‐H exhibits stronger intermolecular interactions than those of Pt‐CF 3 and Pt‐ t Bu 2 during the rotation process (Table S1). Moreover, the interaction energy of Pt‐H (231 kJ mol −1 ) is significantly higher than typical secondary interactions such as hydrogen bonding (4 to 13 kJ mol −1 ) but lower than the covalent C−C bond (≈356 kJ mol −1 ) [11a, 24] . Such interaction energy of platinum(II) complexes indicates that the as‐prepared adhesives based on Pt II ⋅⋅⋅Pt II interactions can behave closely to covalently crosslinked networks, coupled with the capability of dynamic chain motion, which facilitates the strong and reversible adhesion.…”

Highly stretchable and stretch-induced fluorescence chromism self-healing materials based on boroxine and dynamic imine bond

“…Boroxine is a type of dynamic covalent bond, but certain external stimulation is required in order to achieve the process of dynamic reversible exchange, usually requiring the presence of water or heating. 20,21,48,49 In our previous study, we reported a similar boroxine bond self-healing material, in which the self-healing process requires water. 21 This waterassisted self-healing PDMS-boroxine contains boroxine and hydrogen bonds.…”

Ultra‐Strong and Proton Conductive Aqua‐Based Adhesives from Facile Blending of Polyvinyl Alcohol and Tungsten Oxide Clusters

“…A single lap shear test is also conducted for PVA16, and it exhibits a shear strength up to 8.2 ± 1.7 MPa on glass (Figure S8, Supporting Information), which exceeds most reported aqua‐based adhesive (Figure 3e). [ 36,37 ] As shown in Figure 3f, a small joint area of 5 × 25 mm 2 between two overlapped smooth glasses can easily withstand over 20 kg. The acid form of PTA is critical to the achievement of well dispersion and the resulted promising adhesion since the altering of counterions leads to poor dispersion and mediocre adhesive performance (Figure S7, Supporting Information).…”

“…A single lap shear test is also conducted for PVA16, and it exhibits a shear strength up to 8.2 ± 1.7 MPa on glass (Figure S8, Supporting Information), which exceeds most reported aqua-based adhesive (Figure 3e). [36,37] As shown in Figure 3f, a small joint area of 5 × 25 mm 2 between two overlapped smooth glasses can easily withstand over 20 kg.…”