We are designing a product in which an alcohol (IM...
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Keith Lewis We are designing a product in which an alcohol (IMS or IPA) containing a dye (probably fluorescien) will be in intimate contact with transsparent PVC (plasticised) We are concerned about possible plasticiser migration into the alcohol and dye absorption by the PVC Thanks in advance
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You are right to be concerned; there may well be migration in both directions. I suggest you carry out some practical rests to determine if there is a problem. Clamp the PVC against the product and place it an oven at 50 to 60ï¾°C for about a week to accelerate the process. If the dye has migrated into the PVC you will see it and if the plasticser has migrated into the other material you will see softening of the surface andor swelling and/or crazing of the surface. Test for longer if there is no migration for greater security depending on the lifetime you want from the product. Best regards, Paul Anderson Consultant Pera Pera Innovation Park Melton Mowbray Leicestershire LE13 0PB UK Tel: + 44 (0) 1664 501 501 Fax: + 44 (0) 1664 501 556 Email: paul.anderson@pera.com Website: www.pera.com
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