pH evolution in solution after contact with multilayer films after different g- irradiation doses and thus reconciliation of pH and TOC with carboxylic acids detected By ion chromatography

摘要

1. Polyolefins (PE,PP,EBA,etc.)are prone to generate carboxylic acids during gamma irradiation 2. The extent of the carbosylic acid generation & release depends on the polymer 3. The carboxylic acid release should be counter-balanced by appropriate buffer concentration according to the couple polymer nature|γ-irradiation dose 4. Carboxylic acids not easily detected by (HS)-GC-MS;IC can do 5. Reconciliation of pH.conductivity and TOC with IC data in pure water and possibility to predict them 6. Beyond the E&L measurement:possibility to extrapolate the E&Lprofile obtained in pue water to other solvents.