Technical Paper Archive


This site contains all papers presented at Rubber Division, ACS Technical Meetings from 2000-2018. Meetings prior to 2000 are incomplete and papers are added as they are digitized.


For older papers not listed here, please send your request, including Meeting Year, Title, Author, and Paper # to: cbrady@rubber.org


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Long Chain Branching and Gel in EPDM

1985spring 12

Event: 125th Technical Meeting (INCOMPLETE)
Location: Indianapolis, IN
Date: May 08, 1984
Author: E. N. Kresge, C. Cozewith, G. Ver Strate
Paper Number: 12

Price: $20.00

  • Ethylene propylene elastomers (EPDM) processing and physical property performance depend on molecular structure. Composition, molecular weight and molecular weight distribution are all controlled to give optimum properties for specific applications. For many processing opera ions and end-use physical properties very important structural variables are long chain branching (LCB) and gel . These two variables alter bulk rheological properties thereby strongly influencing cold flow, mixing performance, extrusion characteristics and vulcanizate network perfection. Long chain branching is sometimes intentionally introduced to improve pr ocessing properties. This paper discusses (Slide 1) the mechanisms for LCB and gel formation and methods for their determination.

    Papers from 125th Technical Meeting (INCOMPLETE)

    Items from 125th Technical Meeting (INCOMPLETE)