The effect of plasticizers on thermoplastic starch films developed from the indigenous Ethiopian tuber crop Anchote (Coccinia abyssinica) starch

Development of starch based intelligent films by incorporating anthocyanins of butterfly pea flower and TiO2 and their applicability as freshness sensors for prawns during storage

“…The same results were observed in the literature. 41,42 The interaction of starch and BPE in S/BPE lms was reected in the spectrum. The absorption band at 1610 cm À1 can be attributed to the stretching COO vibration and reveals the presence of an ester bond of carbonyl or carboxylic acid.…”

Physical Properties of Thermoplastic Starch Derived from Natural Resources and Its Blends: A Review

“…Figure 5 and Table 3 presents the mechanical test results of the samples. With reference to the tensile result of synthetic polymers, polystyrene (30-55 MPa) and polypropylene (25)(26)(27)(28)(29)(30)(31)(32)(33)(34)(35)(36)(37)(38)(39)(40), it was found that the highest tensile value (35 MPa) is achievable with the composition of GC 24-28% and FC 10-15%. This was attributed to the effect of glycerol opening the polymeric 3D structure, which allowed fibre incorporation.…”

“…Plasticisers play a vital role in the preparation of thermoplastic starch as they improve starch behaviour by reducing internal hydrogen bonding in between the polymer chain while increasing free volume. This, in turn, increases flexibility and processability and promotes molecular chain mobility [ 32 , 35 ]. The effectiveness of plasticisers depends on the similarity of the polymer used.…”

“…Several research works have been recently conducted to explore certain ionic liquids (ILs) as new starch plasticisers. Ionic liquids include 1-ethyl-3-methylimidazolium acetate ([emim + ][Ac − ]) [ 35 , 37 ] and 1-butyl-3-methyllimidazolium chloride ([bmim + ][Cl − ]) [ 33 ]. Besides, a recent study employed fried sunflower oil as a plasticiser in thermoplastic starch composites.…”

“…A comprehensive study was conducted by Demash and Miyake [ 35 ] regarding the effect of four different types of plasticisers on anchote (Coccinia abyssinica) starch film. Glycerol, 1-ethyl-3-methylimidazolium acetate, sorbitol, and tri-ethylene glycol were utilised at concentrations of 30% and 40% w / w in the starch mixture.…”