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Physical properties and cure characteristics of natural rubber/nanoclay composites with two different compatibilizers
Author(s) -
Doğan Mehmet,
Oral Demet Dengiz,
Yılmaz Betül,
Savu Melih,
Karahan Selçuk,
Bayramlı Erdal
Publication year - 2011
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.33690
Subject(s) - materials science , natural rubber , organoclay , composite material , ultimate tensile strength , curing (chemistry) , tear resistance , intercalation (chemistry) , montmorillonite , elastomer , exfoliation joint , graphene , chemistry , inorganic chemistry , nanotechnology
The effects of epoxidized natural rubber (ENR) and maleic anhydride‐grafted polybutadiene (PB‐ g ‐MA) as compatibilizers to rubber formulations with and without organo‐modified layered silicates are investigated. The physical properties and curing characteristics of composites are studied by moving die rheometer, rubber process analyzer, tensile, tear, and hardness testing. The state of organoclay intercalation was determined by X‐ray diffraction method. The addition of compatibilizers, especially ENR 50, results in further intercalation or exfoliation of the organoclay that increased the clay dispersion in the rubber matrix. ENR 50 with organo‐modified clay improves the physical properties and changes the curing profile. The addition of PB‐ g ‐MA without organoclay increases the tensile strength (σ max ) by increasing the stock viscosity of the rubber compound. Interestingly, simultaneous increase in hardness and σ max is achieved in the presence of both compatibilizers, a characteristic that is difficult to achieve and sometimes required in rubber processing. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2011