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April 24, 2014

Homework Help: chemistry

Posted by kkr on Monday, December 17, 2012 at 11:46pm.

Butene H2C=CH-CH2-CH3 can be reacted to form isotactic polybutene (PB).

(a) Would you expect isotactic polybutene to melt at a higher or lower temperature than atactic polybutene of the same molecular weight?
Higher T
Lower T

(b) Is isotatic polybutene a thermoplastic or thermoset?
Thermoplastic
Thermoset


(c) What is the value of the degree of polymerization n of isotactic PB with a molecular weight of 3.091105 g/mol?

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