4.7 Article

Tack of Entangled Molecular Bottlebrushes

Journal

ACS MACRO LETTERS
Volume -, Issue -, Pages 350-355

Publisher

AMER CHEMICAL SOC
DOI: 10.1021/acsmacrolett.2c00710

Keywords

-

Ask authors/readers for more resources

Polymer softness is important for good tack in adhesives. We studied the tack performance of alpha-olefin molecular bottlebrushes with a lower elastic modulus compared to linear polyolefin. The tack parameters increased as the bottlebrush side chain length increased and the modulus decreased. Molecular dynamics simulations showed that the bonding energy increased with side chain length due to strong van der Waals interactions between the side chains and the aluminum sheet.
Polymer softness (i.e., low elastic modulus) is a known requirement for good tack in adhesives. We assess the tack performance of alpha-olefin molecular bottlebrushes having an elastic modulus from 4 to 30 times lower than a linear polyolefin (polypropylene). Monotonic increases of the tack parameters are observed as the bottlebrush side chain length (Nsc) increases and the modulus decreases. All-atom molecular dynamics simulations reveal that the monomeric bonding energy increases with Nsc due to a strong van der Waals interaction between the side chains and the aluminum sheet, which overcomes the energy penalty imposed by side-chain bending.

Authors

I am an author on this paper
Click your name to claim this paper and add it to your profile.

Reviews

Primary Rating

4.7
Not enough ratings

Secondary Ratings

Novelty
-
Significance
-
Scientific rigor
-
Rate this paper

Recommended

No Data Available
No Data Available