Structure property relations in polyethylene oxide/starch blended films using WAXS techniques

Abstract

A series of polyethylene oxide (PEO)/starch blends were prepared by extrusion and their films were prepared by compression molding. It was observed that the presence of characteristic peaks of PEO and starch at 845 and 1643.7 cm À1 , respectively, in FTIR spectra of PEO/starch blends favors the blending of PEO/starch. The physicomechanical and optical properties of PEO/starch-blended films were measured. The tensile strength of the blended films decreased, whereas the haze values increased with an enhanced starch concentration in PEO/starch blends. The results obtained were correlated with microstructural parameters such as, crystallite size and lattice strain determined using wide angle X-ray scattering (WAXS) data. The X-ray line profile analysis shows that the crystallite shape area is maximum in PEO and decreases with the addition of starch.

Effect of hydrodynamic interaction on free volume changes and the mechanical properties of SGFR‐PBT composites

“…This would increase the tensile strength and Young's modulus by the stress transfer between the fiber and PBT matrix . Similar types of results have reported for polyethylene oxide/starch blends and polyvinyl alcohol/Graphene oxide composite respectively . The decreased elongation at break as a function of SGF loading is attributed to the reduced ductility of SGFR‐PBT composites due to the incorporation of short glass fibers .…”

Lignin‐xylaric acid‐polyurethane‐based polymer network systems: Preparation and characterization

“…The new band at 3335 cm −1 was assigned to the hydrogen bonded NH bonds from the urethane linkage . Broad bands around 2912 cm −1 in the L0 spectrum and 2920 cm −1 in the L15 spectrum are assigned to the CH 2 stretching of PEG and MDI, and CH stretching of XE . The band at 2920 cm −1 is additionally assigned to the CH and CH 2 stretching of lignin.…”

Self‐Assembled Star‐Shaped sPCL–PEG Copolymer Nanomicelles with pH‐Sensitivity for Anticancer Drug Delivery

“…[ 32 ] The TC–PEG–CT spectrum shows the C–O–C– stretching at 847 cm −1 and the −C–H stretching of the methylene groups at 2889 cm −1 . [ 33 ] And the peak at 1737 cm –1 is the CO stretching vibrations of the –COOH, indicating that the modification of PEG was successful and that the –COOH was attached. The sPCL spectrum shows the CO stretching vibrations of the carbonyl at 1726 cm –1 and the C–O–C stretching of the ether group at 1188 and 1242 cm –1 .…”