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Optimization of physical and mechanical properties of rubber compounds by a response surface methodological approach
Author(s) -
Sridhar V.,
Prasad K.,
Choe S.,
Kundu P. P.
Publication year - 2001
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.1933
Subject(s) - carbon black , ultimate tensile strength , natural rubber , response surface methodology , volume fraction , central composite design , composite material , materials science , elongation , coupling (piping) , composite number , design–expert , volume (thermodynamics) , modulus , carbon fibers , thermodynamics , chemistry , physics , chromatography
Response surface methodology was used for optimizing the ratio of vegetable oil and carbon black and occluded volume fraction of rubber in the compound. Central composite design for two variables was chosen as the experimental design. The data obtained from measurement of properties was fitted as a two variable second‐order equation, and were plotted as contours using software developed from MATLAB v.5.1. From contours it is observed that at the ratio of 0.06 of vegetable oil and carbon black, there is maximum coupling, and a further increment in vegetable oil and carbon black ratio shows less coupling and more plasticizing effect. The ultimate failure properties like tensile and tear strength and elongation decreases with an increase in occluded volume fraction, reaches a minima at the central region, followed by an increase, whereas 300% modulus and hardness decreases throughout.© 2001 John Wiley & Sons, Inc, J Appl Polym Sci 82: 997‐1005, 2001