Monomer Reactivity Ratios and Chain Segment Distribution for AM/2-EHA Copolymer

Abstract:

A new copolymer of acrylamide (AM) and Isobutane-Ethylhexyl acrylate (2-EHA) was synthesized as profile control agent by free radical copolymerization. The copolymer composition obtained by element analysis method led to determination of reactivity ratio by employing YBR calculative method. The result indicated that the reactivity ratios of AM and 2-EHA were 0.856and 0.592 respectively. The chain segment distribution of copolymer was investigated from reactivity ratio and the microstructure of copolymer molecule was analyzed. The results showed that the ratios in feed can hardly change the chain segment distribution. The proportion of 1M1 decreased with the increase of AM in feed. AM and 2-EHA had a tendency to alternate in copolymer chain when f₁=0.286~0.375. The monomer which had a low ratio in feed inserted in copolymer chain with 1M chain segment and the other monomer was separated evenly. It can help to study copolymerization for AM and 2-EHA for industrial production in mass.

• Periodical: Advanced Materials Research (Volume 1083)
• Pages: 9-14
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1083.9
• Online since: January 2015
• Authors: Ming Tian, Yong Jun Xu*
• Keywords: Chain Segment Distribution, Copolymer, Profile Control Agent, Reactivity Ratio

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