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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FLOCCULATION IN ELASTOMERIC POLYMERS CONTAINING NANOPARTICLES: JAMMING AND THE NEW CONCEPT OF FICTIVE DYNAMIC STRAIN

2014fall 39

Event: 186th Technical Meeting
Location: Nashville, TN
Date: October 14, 2014
Author: Christopher G. Robertson*
Paper Number: 39

Price: $20.00

  • Understanding the physics of the particle network in filled rubber is key to developing reduced energy loss compounds for automobile tires and other applications. Progress toward that goal is evident in the recent literature which reveals some fascinating parallels between the effect of temperature on traditional glassy materials and the role of deformation on the behavior of granular materials, foams, and particle-filled polymers and pastes. The phenomenological treatment of structural relaxation (physical aging) in the nonequilibrium state of glasses, which includes the characteristic features of nonexponentiality and nonlinearity, is extended in the present work to model the progressive structural arrest (jamming) that occurs during the filler flocculation process in uncrosslinked elastomers. A new concept of fictive dynamic strain is developed for nanoparticle-reinforced rubbery polymers by drawing an analogy to the use of fictive temperature in nonequilibrium glasses. The fictive strain converges toward the actual strain as the system approaches steady state. The utility of the approach is demonstrated using literature data for the filler flocculation process of a nanoparticle- filled elastomer.

    Papers from 186th Technical Meeting

    Items from 186th Technical Meeting