Adhesion
“Adhesion is any attraction process between dissimilar molecular species that can potentially bring them in "direct contact". By contrast, cohesion takes place between similar molecules.”
“Adhesion is the tendency of dissimilar particles and/or surfaces to cling to one another (cohesion refers to the tendency of similar or identical particles/surfaces to cling to one another). The forces that cause adhesion and cohesion can be divided into several different types. The intermolecular forces responsible for the function of various kinds of stickers and sticky tape fall into the categories of chemical adhesion, dispersive adhesion, and diffusive adhesion.”
Recent Journal Articles
1/7/2011
Adhesion of nonplanar wrinkled surfaces
(179–185)Journal of Polymer Science B: Polymer Physics 49, #3 (2011)
Kundu et al showed with a wrinked silicone elastomer that adhesion a transition from enhancement of adhesion to decrease depending upon wrinkle dimensions. (RDC 1/13/2011)
12/3/2010
Direct measurement of weak depletion force between two surfaces
(1-11) Chinese Journal of Polymer Science 29, #1 (2011)
Gong et al used applying total internal reflection microscopy to directly measure the interaction between a free-moving particle and a flat surface in solutions consisting of small water-soluble organic molecules or polymeric surfactants. Results indicate that stable nanobubbles (ca. 150 nm) exist free in the above aqueous solutions. More importantly, the existence of such nanobubbles induces an attraction between the spherical particle and flat surface. (RDC 12/3/2010)
10/29/2010
Interfacial bond property of UHMWPE composite
(35-44) Polymer Bulletin 65 #1 (2010)
Zhu et al of East China University showed that UHMWPE resins mixed with hydrocarbons has good wettability with the UHMWPE fiber surface. The UHMWPE/PCH composite has excellent transverse tensile strength, interlaminar shear strength, and the pull-out strength together with outstanding interfacial bonding. (RDC 12/16/2010)