Physical assessment, spectroscopic and chemometric analysis of starch-based foils with selected functional additives
Authors:
- Tomasz Oniszczuk,
- Maciej Combrzyński,
- Arkadiusz Matwijczuk,
- Anna Oniszczuk,
- Bożena Gładyszewska,
- Janusz Podleśny,
- Grzegorz Czernel,
- Dariusz Karcz,
- Agnieszka Niemczynowicz,
- Agnieszka Wójtowicz
Abstract
The paper presents the results of studies related to the impact of functional additives in the form of polylactide (PLA), polyvinyl alcohol (PVA), and keratin hydrolysate (K) on the physical characteristics of biopolymer foils. TPS granulate was obtained using a TS-45 single-screw extruder with L/D = 16. Foil was produced with the use of an L/D = 36 extruder with film-blowing section. The impact of the quantity and type of the functional additives on the processing efficiency and energy consumption of granulate extrusion, as well as the physical characteristics of the foil produced: thickness, basis weight, and colour were determined. By measuring the FTIR spectra it was determined the type and origin of the respective functional groups. It was observed that foils produced from granulates with the addition of 3% PVA were characterised by the lowest thickness and basis weight. Addition of 2 and 3% of PLA increased thickness and basis weight of starch-based foils significantly. Increasing the content of keratin in SG/K samples resulted in a decrease of brightness and intensify the yellow tint of foils, especially when 2 and 3% of keratin was used. In terms of the other samples, it was observed that the colour remained almost unchanged irrespective of the percentage content of the additive used. Infrared analyses conducted on foil containing PVA, PLA, and K revealed a change in spectra intensity in the frequency range associated with–OH groups originating from the forming free, intra- and intermolecular hydrogen bonds. Based on an analysis of the respective bands within the IR range it was also concluded that considerable structural changes took place with respect to the glycosidic bonds of starch itself. The application of the mentioned additives had a significant structural impact on the produced starch-based foils. Furthermore, the conducted UV-Vis analyses revealed a substantial increase in absorbance and a related reduction of the permeability (colour change) of the obtained materials in the range of ultraviolet and visible light.
- Record ID
- CUTee6fdefd31874b59b9a38a7198b34588
- Publication categories
- ;
- Author
- Journal series
- PLoS ONE, ISSN , e-ISSN 1932-6203, other
- Issue year
- 2019
- No
- 14 (2)
- Pages
- [1-19]
- Article number
- e0212070
- Other elements of collation
- rys.; tab.; wykr.; Bibliografia (na s.) - 18-19; Bibliografia (liczba pozycji) - 43; Oznaczenie streszczenia - Abstr.; Numeracja w czasopiśmie - 14 (2)
- Keywords in English
- starch-based foils, functional additives, spectroscopy, chemometric analysis
- DOI
- DOI:10.1371/journal.pone.0212070 Opening in a new tab
- URL
- https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0212070 Opening in a new tab
- Language
- eng (en) English
- License
- Score (nominal)
- 100
- Additional fields
- Indeksowana w: Web of Science, Scopus
- Uniform Resource Identifier
- https://cris.pk.edu.pl/info/article/CUTee6fdefd31874b59b9a38a7198b34588/
- URN
urn:pkr-prod:CUTee6fdefd31874b59b9a38a7198b34588
* presented citation count is obtained through Internet information analysis, and it is close to the number calculated by the Publish or PerishOpening in a new tab system.