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April 26, 2015

Homework Help: Chemistry

Posted by qpt on Tuesday, December 18, 2012 at 5:56am.

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?
I)Higher T
II)Lower T

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

(c) What is the value of the degree of polymerization (n) of isotactic PB with a molecular weight of 3.091X10^5 g/mol?

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