Abstract
AbstractIn the copolymerization of acrylamide (Am) and hydroxyethyl acrylate (HEA), the initial product is a carbon chain polymer with hydroxyl and amide side groups. However, in the present work, these two conventional vinyl monomers are combined into a degradable heterochain copolymer by using a phosphazene base, t‐BuP4, as a catalyst. NMR not only confirms that the backbone of the resulting copolymer is composed of ester–ether units and amide units but also suggests that the resulted secondary amide group retains an active hydrogen and can further react with another olefin, which would result in branching or gelation. Thermogravimetric analysis (TGA) shows a signal indicating decomposition at 205–509 °C, verifying the uniform composition of the sample. More interestingly, the synthesized copolymer can dissolve in water and exhibits aggregation‐enhanced emission (AEE). Additionally, the aqueous copolymer solution has a high selectivity and sensitivity for Ba2+, Fe2+, and Fe3+ cations. Hence, it is believed that this method for constructing degradable polymers may offer innovative insights into polymer synthesis and application.
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