Degradable Poly(alkyl acrylates) with Uniform Insertion of Ester Bonds, Comparing Batch and Semibatch Copolymerizations

Jean Baptiste Lena, Alexander W. Jackson, Lohitha Rao Chennamaneni, Chiong Teck Wong, Freda Lim, Yosephine Andriani, Praveen Thoniyot (Corresponding author), Alexander M. Van Herk (Corresponding author)

Onderzoeksoutput: Bijdrage aan tijdschriftTijdschriftartikelAcademicpeer review

35 Citaten (Scopus)

Samenvatting

Poly(alkyl)acrylates are a major class of nonbiodegradable polymers which are difficult to recycle due to an all-carbon backbone. Introducing a certain number of ester bonds in the backbone via radical ring opening copolymerization of acrylates with 2-methylene-1,3 dioxepane (MDO) improves its degradability and may be promising for chemical recycling. The current work examines the influence of monomer addition profiles on the copolymerization of acrylates with MDO. We improved the homogeneity of the MDO insertion through a semibatch approach, which was demonstrated by the molecular weight distribution of fragments after alkali degradation. By detailed NMR analysis, we identified the incorporation of MDO ring retained units, formation of branches on acrylate units, and formation of branches on MDO ring open units as the key side reactions. Theoretical calculations showed that mainly kinetic factors influence the outcome of the polymerization.

Originele taal-2Engels
Pagina's (van-tot)3994-4011
Aantal pagina's18
TijdschriftMacromolecules
Volume53
Nummer van het tijdschrift10
DOI's
StatusGepubliceerd - 26 mei 2020
Extern gepubliceerdJa

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