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Stress relaxation of raw natural rubber
Author(s) -
Minoura Yuji,
Kamagata Kaiji
Publication year - 1964
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.1964.070080305
Subject(s) - mastication , natural rubber , stress relaxation , materials science , relaxation (psychology) , modulus , mooney viscosity , composite material , viscosity , intermolecular force , stress (linguistics) , chemistry , creep , molecule , organic chemistry , dentistry , polymer , medicine , psychology , social psychology , linguistics , philosophy , copolymer
The effects of mastication on stress relaxation of raw rubber was studied in the range of 20–120°C. The stress relaxation time became shorter with increasing mastication, and the modulus also decreased. The modulus decreased with increasing temperature of measurement. Moreover, it is found that mastication caused the solution viscosity of rubber to decrease, and on heating an intermolecular reaction and cleavage of molecules by oxidation appeared to occur at the same time.