Studies on akroflex CD antioxidant loss from neoprene rubber. I. The determination of antioxidant content and the loss mechanism during aging
| Autor: | Joseph F. Meier, D. D. Jerson, James D. B. Smith |
|---|---|
| Rok vydání: | 1974 |
| Předmět: |
Chloroform
Antioxidant Polymers and Plastics Diffusion medicine.medical_treatment Infrared spectroscopy Thermal aging General Chemistry Activation energy Surfaces Coatings and Films law.invention chemistry.chemical_compound Neoprene chemistry Natural rubber law visual_art Materials Chemistry medicine visual_art.visual_art_medium Organic chemistry Nuclear chemistry |
| Zdroj: | Journal of Applied Polymer Science. 18:3543-3553 |
| ISSN: | 1097-4628 0021-8995 |
| DOI: | 10.1002/app.1974.070181205 |
| Popis: | An analytical procedure for determining the antioxidant (i.e., Akroflex CD) content in neoprene rubber has been developed. The method is based on the infrared absorption analyses of chloroform extractables from the cured rubber at 1600 cm−1 and 1300 cm−1. Good agreement is found between these two independent sets of measurements. In an attempt to elucidate the antioxidant loss mechanism found with neoprene, thermal aging studies were carried out over the temperature range of 80°–200°C. Using the infrared analytical procedure, antioxidant loss rates at the different temperatures were established. The activation energy value (5.1 kcal/mole) for the loss rate as well as other aging data suggest that the antioxidant is lost by a diffusion mechanism. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Plný text