Evaluation of Epoxidized Natural Rubber Latex Based Pressure Sensitive Adhesives Containing Hydrocarbon and Rosin Ester Tackifier Dispersions on Adhesive Properties

Abstract:

Epoxidized natural rubber latex with 50 mole % epoxidization referred to as ENR50 L was produced by in situ generated peracids. ENR50 L was subsequently concentrated to ENR50 L concentrate (ENR50 LC) via ultrafiltration membrane separation process. Both, ENR50 Latices (ENR50 L and ENR50 LC) were evaluated for the formulation of latex-based pressure sensitive adhesives (PSAs). In this work, evaluation of hydrocarbon and rosin ester tackifier dispersions in ENR50 Latices - based PSAs were performed through viscosity and peel adhesion test. The viscosity of latex-based PSAs containing hydrocarbon tackifier increased with increasing level of ENR50 Latices. However, the trend for latex-based PSAs containing rosin ester tackifier was inversely proportional to the level of ENR50 Latices. The peel adhesion of ENR50 Latices - based PSAs containing hydrocarbon tackifier was found greater than that of ENR50 Latices based PSAs containing rosin ester tackifier. Furthermore, the peel adhesion of ENR50 LC based PSAs was marginally higher than ENR50 L based PSAs.

• Periodical: Advanced Materials Research (Volume 845)
• Pages: 189-193
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.845.189
• Online since: December 2013
• Authors: Abu Bakar Rohani*, Manroshan Singh Jaswan, V. Devaraj
• Keywords: Epoxidized Natural Rubber Latex, Pressure Sensitive Adhesives, Tackifier Dispersion

References

[1] Irving Skeist, Handbook of Adhesive, Third ed., Van Nostrand Reinhold, New York, (1990).

[2] Donatas Satas, Handbook of Pressure Sensitive Adhesive Technology, Second ed., Van Nostrand Reinhold, New York, (1990).

[3] Oldack, R.C., Bloss, R.E., Compounding Natural Latex in Water-based Pressure Sensitive Adhesives, Adhesive Age. 22 (4), (1979) 38-44.

[4] Gazeley, K.F., Mente, P.G., Pressure Sensitive Adhesives from Modified Natural Rubber Latex. Adhesives, Sealants and Encapsulants Conference, London 5-7 November, (1985) 87-98.

[5] P. Rajesh Raja, A.G. Hagood, M.A. Peters, S.G. Croll., Evaluation of natural rubber latex-based PSAs containing aliphatic hydrocarbon tackifier dispersions with different softening points – Adhesive properties at different conditions. Int. J. Adhesion & Adhesives 41, (2013).

DOI: 10.1016/j.ijadhadh.2012.11.009

[6] I.R. Gelling, Epoxidised Natural Rubber. J. Nat. Rubb. Res. 6(3) (1991) 184-205.

[7] PSTC 1: Peel Adhesion for Single Coated Tapes 180o Angle (1970).

[8] D.C. Blackley, Polymer Latices Science and Technology, Vol 1. Fundamental Principles. Chapman & Hall. London, (1997).