Changes in viscoelastic properties of latex condoms due to personal lubricants

Abstract

Changes in the viscoelastic properties of the latex membrane due to personal lubricant application may be a potential cause of condom slippage during use. In this study, swelling and stress relaxation were studied for natural rubber latex condoms in the presence of personal lubricants. Neither swelling nor stress relaxation occurred in the presence of a water-based lubricant. Marginal swelling occurred due to a silicone-based lubricant compared to the positive control, mineral oil. However, no relaxation was observed when a stress relaxation test was performed after the swelling reached completion. Considerable relaxation occurred when the test was performed during the ongoing swelling process. These results suggest that stress relaxation may increase the risk of condom slippage due to the presence of a personal lubricant that induces swelling. © 2010 Springer-Verlag.