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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.


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UNIVERSAL COUPLING AGENT FOR CARBON BLACK AND SILICA

C19 universal coupling agent for carbon black and silica galimberti

Event: 196th Technical Meeting - Fall 2019
Location: Cleveland, OH
Date: October 08, 2019
Author: Galimberti Maurizio,
Paper Number: C19

Price: $20.00

  • A pyrrole compound such as 2-(2,5-dimethyl-1H-pyrrol-1-yl)-1,3-propanediol (serinol pyrrole,
    SP) forms stable adducts with carbon black and with silica. Hence, a pyrrole compound such as
    serinol pyrrole is able to functionalize both carbon black and silica. Preparation of the adducts was
    performed through a simple and sustainable method: SP and the filler were mixed and heated. A
    solvent (acetone) was used only to allow an easy mixing at the lab scale. Catalysts were not
    involved. The synthesis of SP and the functionalization reactions are characterized by high yield
    and high atom efficiency.
    The CB-SP adduct was used in a composite based on IR/BR and CB/Silica, in place of a minor
    amount of CB. It did not have effect on the vulcanization behavior and promoted lower Payne
    effect, with the crossover of the G’ vs strain curves.
    The silica-SP adduct was used in a composite based on S-SBR and NR and silica as the only filler:
    silica, silica-TESPT and silica-SP systems were compared. The silica-SP system gave faster
    vulcanization and lower hysteresis. The silica-TESPT system gave the best tensile properties.
    Results here reported, though preliminary, indicate that a pyrrole compound such as serinol
    pyrrole is able to promote a strong interaction and a chemical linkage between the filler, either
    carbon black or silica, and the rubber compound. To our knowledge, it is for the first time reported
    the ability of the same chemical (family of chemicals) to behave as coupling agent with the rubber
    matrix for both carbon black and silica.

    Papers from 196th Technical Meeting - Fall 2019

    Items from 196th Technical Meeting - Fall 2019