1. Synthesis and quantitative analyses of acrylamide-grafted poly(lactide-co-glycidyl methacrylate) amphiphilic copolymers for environmental and biomedical applications
- Author
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Mijanur Rahman, Atitsa Petchsuk, Pakorn Opaprakasit, Kamonchanok Thananukul, and Wilairat Supmak
- Subjects
Glycidyl methacrylate ,Magnetic Resonance Spectroscopy ,Polymers ,Polyesters ,Polyacrylamide ,Acrylic Resins ,Biocompatible Materials ,02 engineering and technology ,Biodegradable Plastics ,010402 general chemistry ,Methacrylate ,01 natural sciences ,Analytical Chemistry ,chemistry.chemical_compound ,Surface-Active Agents ,Polymethacrylic Acids ,Polymer chemistry ,Spectroscopy, Fourier Transform Infrared ,Copolymer ,Instrumentation ,Spectroscopy ,Molecular Structure ,021001 nanoscience & nanotechnology ,Grafting ,Atomic and Molecular Physics, and Optics ,0104 chemical sciences ,Monomer ,chemistry ,Acrylamide ,0210 nano-technology ,Photoinitiator - Abstract
Bio-degradable/bio-compatible poly(lactide-co-glycidyl methacrylate), P(LA-co-GMA), a copolymer has been synthesized. The material contains curable C C groups, which enable its self-curing and grafting reactions with other vinyl monomers. The copolymer was grafted with a pH-responsive polyacrylamide (PAAm), by UV-assisted reactions using acrylamide (AAm) and N,Nā²-methylene bisacrylamide monomers, and various photoinitiator systems. The original copolymer and its partially-cured counterpart were employed in the grafting reaction. Chemical structures and properties of the resulting materials were characterized. Standard quantitative analysis techniques for measurement of the grafted AAm content and the degree of C C conversion have been developed by 1H NMR and FTIR spectroscopy. FTIR offers more advantages, in terms of non-destructive analysis, ease of operation, and lower cost of analysis. The results show that the grafted products from pre-cured P(LA-co-GMA) copolymers contain higher grafted AAm contents than their uncured counterparts. The highest grafted AAm content was obtained by using benzophenone (BP) as an initiator, while camphorquinone (CQ) led to the lowest content. In contrast, the degree of C C conversion of the copolymer from the two initiator systems shows a reverse trend. These amphiphilic and pH-responsive grafted copolymers with tunable AAm contents have a high potential for use in various applications, especially in biomedical and environmental fields.
- Published
- 2019