Miscellaneous End-groups

Mori [76] characterised the end groups of polyethylene sehacate as a function of molecular size by derivatisation of the hydroxyl and carhoxyl groups with 3,5 dinitro benzoyl chloride and o-(p-nitrobenzyl)N,N -diidopropyliso urea, respectively, and analyses of the derivatised polymers by SEC with IR detection. Methods for the determination of end groups in other polymers are reviewed in Table 8.8 [77-96]. 

Polymer or copolymer End group Analysis method Comment 

Carboxy- and hydroxyl- terminated polbutadiene Infrared spectroscopy Carboxyl hydroxy equivalent weights 

Styrene-acrylonitrile polymers Acrylonitrile Infrared spectroscopy Acrylonitrile determined 

Butadiene-isoprene Terminal hydroxy Infrared spectroscopy Hydroxy nitrile 

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