Results
Title

Synthesis and Some Physico‐Chemical Properties of Novel Starch‐g‐poly(citronellyl acrylate) Copolymers.

Authors

Worzakowska, Marta

Abstract

Novel amphiphilic, more environmentally friendly starch graft copolymers obtained by applying the “grafting from” method are prepared. The graft copolymerization of various ratios of citronellyl acrylate monomer and potato starch at 80 °C in the presence of potassium persulfate (1 wt.%) as an initiator is performed. The maximum of the grafting percent (%G) is observed for potato starch to monomer ratio 1:1.25 where ca. 1.8 hydroxyl groups per glycoside unit are covalently bonded with hydrophobic polymer chains. The graft materials are characterized by the attenuated total reflectance‐Fourier transform infrared spectroscopy (ATR‐FTIR), cross‐polarization magic angle spinning (13C CP/MAS NMR), and scanning electron microscopy (SEM). The performed analyses affirm the structure of the graft materials and confirm the creation of non‐porous copolymers with brief, heterogeneous surface. The selected physico‐chemical properties of the obtained graft copolymers such as ability to gelation, moisture absorption, swelling in polar and non‐polar solvents, chemical resistance, thermal properties, and pyrolysis mechanism are evaluated and compared with the previously tested starch‐g‐poly(citronellyl methacrylate) copolymers.

Subjects

STARCH synthesis; ACRYLATES; AMPHIPHILES; GRAFT copolymers; COPOLYMERIZATION; POTASSIUM compounds

Publication

Starch / Staerke, 2018, Vol 70, Issue 7/8, p1

ISSN

0038-9056

Publication type

Academic Journal

DOI

10.1002/star.201700330