A one pot one step combined radical and ring-opening route for the dual functionalization of starch in aqueous medium
نویسندگان
چکیده
Starch based materials are attractive bio-based alternative to fully synthetic polymers. Native starch has however limited thermoprocessability and properties must be modified. In order improve the of starch-graft-poly(butyl-acrylate-co-styrene) copolymers via a process as green possible, we report herein new method for dual functionalization polysaccharide one pot step reaction in aqueous medium combining free radical polymerizations ring-opening chemistry. Poly(butyl acrylate) or poly(butyl acrylate-co-styrene) (ca. 60 000 g/mol) oligo(?-caprolactone) were grafted on with grafting percentage up 75 %. The show two glass transition temperatures: around 55?60 °C related second attributed vinyl polymers, from ?46 20 depending butyl acrylate/styrene ratio. resulting functionalized exhibit excellent mechanical properties, elongation at break range 20–210 %, while single shows less than 5
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ژورنال
عنوان ژورنال: Carbohydrate Polymers
سال: 2021
ISSN: ['1879-1344', '0144-8617']
DOI: https://doi.org/10.1016/j.carbpol.2020.117399