Effect of Dip Coating Polymer Solutions on Properties of Thermoplastic Cassava Starch

Thermoplastic starch (TPS) was prepared by melt-mixing cassava starch with glycerol. Polyethylene (PE), polyethylene-grafted-maleic anhydride (PE-MAH) and poly(lactic acid) (PLA) solutions at 2% (w/v) were used to coat TPS using the dip coating process. The tensile strength of TPS increased with the...

Descripción completa

Detalles Bibliográficos
Autores principales: Jantanasakulwong, Kittisak, Homsaard, Nattagarn, Phengchan, Phanurot, Rachtanapun, Pornchai, Leksawasdi, Noppol, Phimolsiripol, Yuthana, Techapun, Charin, Jantrawut, Pensak
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6918419/
https://www.ncbi.nlm.nih.gov/pubmed/31653000
http://dx.doi.org/10.3390/polym11111746
Descripción
Sumario:Thermoplastic starch (TPS) was prepared by melt-mixing cassava starch with glycerol. Polyethylene (PE), polyethylene-grafted-maleic anhydride (PE-MAH) and poly(lactic acid) (PLA) solutions at 2% (w/v) were used to coat TPS using the dip coating process. The tensile strength of TPS increased with the dip coating solution technique, especially for PLA coating. Swelling index, water-soluble matter and water droplet contact angle confirmed the water resistant improvement of TPS by PE-MAH and the PLA dip coating solution. Plasticizer bleeding was found in uncoated TPS after storage, but not in the coated TPS. Coating TPS with PE-MAH and PLA improved the tensile properties, water resistance and conquered plasticizer bleeding problems in TPS.

Ejemplares similares