The use of compatible blend of styrene‐vinylacetate copolymer/natural rubber latex in pressure‐sensitive adhesive applications by using irradiation and chemical initiation

Abstract

Thermoplastic elastomers from blends of styrene‐vinylacetate copolymer latex (S‐VAc) and natural rubber latex (NRL) as a hydrophilic/hydrophobic blend have been prepared by the solution‐casting technique. Compatibility between S‐VAc and NRL was confirmed at all ratios of the blend mixing through the measurements of water absorption, thermogravimetric analysis, and scanning electron microscope. The prepared blend was studied for pressure‐sensitive adhesive (PSA) application. Nonylphenol ethoxylate (NPE) was used as a chemical tackifier to initiate a sticky property for S‐VAc. Also, electron beam irradiation was applied as a physical tackifying agent to promote stickiness for NRL at 12.5 Mrad or at 2.5 Mrad by addition of NPE tackifier. Peel strength, tensile strength, elongation at break, surface hardness, and aging time were investigated. Two types of double‐sided PSA were prepared: the first to be applied at room temperature; the second to be applied thermally at 80°C. The obtained PSA adhesive was suggested to be used for adhering the synthetic veneers to the particle wood panels. © 2009 Wiley Periodicals, Inc. J Appl Polym Sci, 2009

Dependence of Adhesion Properties on Blend Ratio of Ethylene-Propylene-Diene Rubber/Standard Malaysian Rubber Blend Adhesive

“…They concluded that the selfadhesion energy of the blend increases with contact time. The pressure-sensitive adhesive applications of compatible blend of styrene-vinyl acetate copolymer/natural rubber latex by irradiation and chemical initiation were also reported by Magida et al [8]. On the other hand, Stephen et al [9] published the adhesive formulations with ternary blends using simplex lattice design whereas Da Silva et al [10] and Riyajan and Pheweaw [11] investigated the adhesive performance of synthetic rubber blend and natural rubber blend, respectively.…”

Effect of Blend Ratio and Testing Rate on the Adhesion Properties of Epoxidized Natural Rubber (ENR 25)/Styrene–Butadiene Rubber (SBR) Blend Adhesive

“…It was found that the self-adhesion energies of the rubber blend increase with contact time with the glass substrate. Magida et al [4] investigated the pressure-sensitive adhesive applications of compatible blend of styrene-vinyl acetate copolymer/natural rubber latex by using irradiation and chemical initiation. Meanwhile, Da Silva et al [5] found that a single resin improves the adhesion property of styrene-isoprene-styrene (SIS)/styrenebutadiene-styrene (SBS) hot melt pressure-sensitive adhesives.…”

Effect of blend ratio and testing rate on the adhesion properties of pressure-sensitive adhesives prepared from epoxidized natural rubber 25/acrylonitrile–butadiene rubber blend

“…Meanwhile, the effect of testing rate on adhesion properties of acrylonitrile–butadiene rubber (NBR)/SMR L blend-based PSA was investigated by Poh and Lamaming. 5 On the other hand, Magida et al 6 have studied the use of compatible blend of styrene–vinylacetate copolymer/natural rubber latex in PSA applications using irradiation and chemical initiation. In view of the absence of data report in this field of interest, we have carried out a systematic study to understand the effect of blend ratio and testing rate on the adhesion property of ENR 25/NBR-based adhesives.…”