(a) According to the epoxy-amine reaction, determine the functionality of the diglycidyl ether of bisphenol A (1) in a hardening reaction with diethylene triamine (II). CH3 CH,-CH-CH,-O- -0-CH2 CH-CH2 CH3 (I) (b) What is the functionality of (II) in this reaction ? [Ans. (a) 2; (b) 5] H2N-CH2-CH2-NH-CH,-CH,-NH2 (II)