Role of Compatibilization of Phthalic Acid in Cassava Starch/Poly Vinyl Alcohol Thin Films

Gunawardene, Oneesha H. P.; Amaraweera, Sumedha M.; Wannikayaka, W. M. D. B.; Fernando, N. M. L.; Gunathilake, Chamila; Manamperi, Wajira A. R.; Kulatunga, Asela K.; Manipura, A.

doi:10.1007/978-981-19-2886-4_47

Cited by 1 publication

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“…TPS is usually formulated with water since it is considered the best starch plasticizer, but its use has several limitations such as the evaporation of the water during the process (temperatures above 100 °C are needed in the industrial process), and the interaction between the water and the ILs acetate anions can limit the plasticization effect of the IL studied [ 49 , 50 ]. TPS pure films are brittle due to the strong chain interactions of the starch polymer via hydrogen bonding which increases the cohesion forces of the matrix [ 51 ]. Therefore, the use of other adjuvant polymers such as polyvinyl alcohol (PVA) [ 52 ] is a good option to confer resistance to starch-based materials.…”

Section: Introductionmentioning

confidence: 99%

Study of the Plasticization Effect of 1-Ethyl-3-methylimidazolium Acetate in TPS/PVA Biodegradable Blends Produced by Melt-Mixing

et al. 2023

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The first step towards the production and marketing of bioplastics based on renewable and sustainable materials is to know their behavior at a semi-industrial scale. For this reason, in this work, the properties of thermoplastic starch (TPS)/polyvinyl alcohol (PVA) films plasticized by a green solvent, as the 1-ethyl-3-methylimidazolium acetate ([Emim+][Ac−]) ionic liquid, produced by melt-mixing were studied. These blends were prepared with a different content of [Emim+][Ac−] (27.5–42.5 %wt.) as a unique plasticizer. According to the results, this ionic liquid is an excellent plasticizer due to the transformation of the crystalline structure of the starch to an amorphous state, the increase in flexibility, and the drop in Tg, as the [Emim+][Ac−] amount increases. These findings show that the properties of these biomaterials could be modified in the function of [Emim+][Ac−] content in the formulations of TPS, depending on their final use, thus becoming a functional alternative to conventional polymers.

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