Abstract - Effect of Rubber Chemicals on the Surface Free Energy of NR and NR


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	Publications of MRB Latest Publications MRB Digest Journal of Rubber Research 3^rd Qtr 2008 Vol 11(3) 2^nd Qtr 2008 Vol 11(2) 1^st Qtr 2008 Vol 11(1) 4^th Qtr 2007 Vol 10(4) 3^rd Qtr 2007 Vol 10(3) 2^nd Qtr 2007 Vol 10(2) 1^st Qtr 2007 Vol 10(1) 1^st Qtr 2006 Vol 9(1) 2^nd Qtr 2006 Vol 9(2) 3^rd Qtr 2006 Vol 9(3) 4^th Qtr 2006 Vol 9(4) Submit paper/article Order Form	Abstract Effect of Rubber Chemicals on the Surface Free Energy of NR and NR–SBR Rubber Blends A. Ansarifar, G.W. Critchlow, R. Guo, R.J. Ellis, S.P. Kirtley and B. Seymour Rubber chemicals are added to raw rubbers to improve their mechanical, environmental and processing properties. These chemicals often migrate to the surface and alter its free energy and ultimately its contact adhesion properties. In this study, some industrially important rubber chemicals were mixed with natural rubber and a blend of natural rubber and styrene-butadiene rubber, and the contact angle measured using drops of water and diiodomethane on the rubber surface. The data from these measurements were subsequently used to calculate the surface free energy of the rubbers. Some of the chemicals had a detrimental effect on the surface free energy of the rubbers. This was also confirmed by static secondary ion mass spectrometry, which indicated a substantial surface modification of the rubbers. back
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