Biodegradable starch-based films containing saturated fatty acids: thermal, infrared and raman spectroscopic characterization

Autor:	Nobrega, Juliana B. Olivato, Carmen M. O. Müller, Fabio Yamashita
Jazyk:	English<br />Portuguese
Rok vydání:	2012
Předmět:	Fatty acids PBAT-starch blends blown extrusion thermal analysis Chemical technology TP1-1185
Zdroj:	Polímeros, Iss ahead, p 0 (2012)
Druh dokumentu:	article
ISSN:	0104-1428 1678-5169
DOI:	10.1590/S0104-14282012005000068
Popis:	Biodegradable films of thermoplastic starch and poly (butylene adipate co-terephthalate) (PBAT) containing fatty acids were characterized thermally and with infrared and Raman spectroscopies. The symmetrical character of the benzene ring in PBAT provided a means to illustrate the difference between these spectroscopic techniques, because a band appeared in the Raman spectrum but not in the infrared. The thermal analysis showed three degradation stages related to fatty acids, starch and PBAT. The incorporation of saturated fatty acids with different molecular mass (caproic, lauric and stearic) did not change the nature of the chemical bonds among the components in the blends of starch, PBAT and glycerol, according to the thermal analysis, infrared and Raman spectroscopies.
Databáze:	Directory of Open Access Journals
Externí odkaz:	https://doaj.org/article/a91e15419056474bbdf5a14e7f4345b7 Zobrazit plný text záznamu View record in DOAJ