A hot-melt pressure-sensitive adhesive based on styrene-butadiene-styrene rubber. The effect of adhesive composition on the properties

Abstract

Hot‐melt pressure‐sensitive adhesives based on styrene‐butadiene block copolymers with aliphatic and aromatic tackifying resins and plastifying oils have been analyzed. The importance of the resin structure in the compatibility with the block copolymer and the influence of the different paraffinic‐naphthenic character of the oil in PSA performance have been shown. Ternary systems with a fixed polymer content (30%) and with variable resin and oil contents show a good miscibility over the whole range of compositions, and only one glass transition temperature was found in each composition. The relationship between chemical composition and bulk performance are expressed in terms of the visco‐elastic behavior of the adhesives, measured by DMTA. It has been shown that at a given resin content there is a minimum on tan δ peak vs. temperature, the melt viscosities present a plateau region and the tack strength shows a maximum. An important conclusion is that phase separation is not a requirement for maximum tack; some restricted miscibility is enough, present in a few microdomains of the blend. © 1996 John Wiley & Sons, Inc.

Evaluation of Yellow Rectangle Traps Coated With Hot Melt Pressure Sensitive Adhesive and Sticky Gel Against Rhagoletis indifferens (Diptera: Tephritidae)

“…An alternative to SG traps is fruit ßy adhesive paper (FFAP) (Atlantic Paste and Glue Co. Inc., Brooklyn, NY), which is tacky and not messy, but a major problem with FFAP is that it can be severely damaged by rain (Robacker and Heath 2001). An alternative to SG and FFAP are hot melt pressure sensitive adhesives (HMPSAs), which occur in many forms but are generally blends of copolymers with tackifying resins, oils, and other additives (Galán et al 1996). These adhesives are highly viscous and are heated to reduce their viscosity to allow coating on surfaces.…”

Acidic hydrolysis of a poly(vinyl acetate) matrix by the catalytic effect of Ag nanoparticles and the micellization of Ag‐metal‐containing polymer

“…Only when the drug releases from the matrix, can it penetrate into the skin efficiently. Hence, the cumulative drug release is much more important than the adhesive properties as the former is optimized, whereas the latter is kept under a certain range 14…”

“…The PSAs are solid at room temperature and become liquid when heated to a relatively low temperature 13. SIS‐based HMPSAs are solvent‐free, environmental friendly, and can be produced on a large industrial scale 14. However, the applications of SIS‐based HMPSAs in TDDS are rarely reported.…”

Fluoride-responsive debond on demand adhesives: Manipulating polymer crystallinity and hydrogen bonding to optimise adhesion strength at low bonding temperatures

“…[1] The drive to produce novel adhesives is to reduce production costs, increase performance and broaden the range of applications for which they can be used in. The chemical structure of the adhesive is integral to the application: for example, polyurethane (PU) hot melt adhesives [2][3][4][5][6][7][8] offer strength and flexibility whereas hydrogels [9][10][11][12][13] can give moderate adhesion in aqueous environments. Cross-linked adhesives such as epoxy resins [6,[14][15][16][17][18][19][20]] can provide extremely strong bonds, but can be brittle, and their typical two-component composition increases fabrication complexity.…”