Vulcanization of rubber creates di - and polysulfide bonds between chains thereby increasing the elastic force constant and making the rubber harder and less extensible .
Chains limits the degrees of freedom and results in chains that tighten more quickly for a given strain .
Vulcanization of rubber creates di - and polysulfide bonds between chains , which limits the degrees of freedom and results in chains that tighten more quickly for a given strain , thereby increasing the elastic force constant and making the rubber harder and less extensible .