A one pot one step combined radical and ring-opening route for the dual functionalization of starch in aqueous medium

被引：3

作者：

Meimoun, Julie ^{[1
]}

Wiatz, Vincent ^{[2
]}

Saint-Loup, Rene ^{[2
]}

Parcq, Julien ^{[2
]}

David, Adelina ^{[3
]}

Stoclet, Gregory ^{[3
]}

Gaucher, Valerie ^{[3
]}

Favrelle-Huret, Audrey ^{[1
]}

Bonnet, Fanny ^{[3
]}

Zinck, Philippe ^{[1
]}

机构：

[1] Univ Lille, CNRS, Cent Lille, Univ Artois,UMR 8181,UCCS Unite Catalyse & Chim S, F-59000 Lille, France

[2] Roquette Freres, F-62080 Lestrem, France

[3] Univ Lille, CNRS, INRAE, Cent Lille,UMR 8207,UMET Unite Mat & Transformat, F-59000 Lille, France

来源：

CARBOHYDRATE POLYMERS | 2021年 / 254卷

关键词：

Starch; Graft copolymerization; Structural / thermomechanical properties; EPSILON-CAPROLACTONE; GRAFT-COPOLYMERS; POLYMERIZATION; CELLULOSE; WATER; PLASTICIZER; ACRYLATE); LACTONES; STYRENE; ESTERS;

D O I：

10.1016/j.carbpol.2020.117399

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Starch based materials are attractive bio-based alternative to fully synthetic polymers. Native starch has however limited thermoprocessability and properties and must be modified. In order to improve the properties of starch-graft-poly(butyl-acrylate-co-styrene) copolymers via a process as green as possible, we report herein a new method for the dual functionalization of the polysaccharide via a one pot one step reaction in aqueous medium combining free radical polymerizations and ring-opening chemistry. Poly(butyl acrylate) or poly(butyl acrylate-co-styrene) (ca. 60 000 g/mol) and oligo(epsilon-caprolactone) were grafted on starch with a grafting percentage up to 75 %. The copolymers show two glass transition temperatures: one around 55-60 degrees C related to starch and a second attributed to the grafted vinyl polymers, from -46 degrees C to 20 degrees C depending on butyl acrylate/styrene ratio. The resulting dual functionalized materials exhibit excellent mechanical properties, with elongation at break in the range 20-210 %, while single functionalized starch shows less than 5 %.

引用

页数：8