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Article

Physical Properties, Spectroscopic, Microscopic, X-ray, and Chemometric Analysis of Starch Films Enriched with Selected Functional Additives

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Department of Thermal Technology and Food Process Engineering, University of Life Sciences in Lublin, Głęboka 31, 20-612 Lublin, Poland
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Department of Chemistry, University of Life Sciences in Lublin, 20-950 Lublin, Poland
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Department of Chemical Technology and Environmental Analytics (C1), Faculty of Chemical Engineering and Technology, Cracow University of Technology, Warszawska 24, 31-155 Kraków, Poland
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Department of General and Coordination Chemistry and Crystallography, Institute of Chemical Sciences, Maria Curie-Skłodowska University in Lublin, pl. Marii Curie-Skłodowskiej 2, 20-031 Lublin, Poland
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Department of Mechatronics, Faculty of Technical Sciences, University of Warmia and Mazury in Olsztyn, Oczapowskiego 11, 10-710 Olsztyn, Poland
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Department of Inorganic Chemistry, Medical University in Lublin, 20-059 Lublin, Poland
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Institute of Agrophysics Polish Academy of Sciences, Doświadczalna 4, 20-290 Lublin, Poland
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Department of Biochemistry and Crop Quality, Institute of Soil Science and Plant Cultivation, State Research Institute, 24-100 Puławy, Poland
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Department of Biophysics, University of Life Sciences in Lublin, Akademicka 13, 20-950 Lublin, Poland
*
Authors to whom correspondence should be addressed.
Academic Editor: Naozumi Teramoto
Materials 2021, 14(10), 2673; https://doi.org/10.3390/ma14102673
Received: 21 April 2021 / Revised: 14 May 2021 / Accepted: 18 May 2021 / Published: 20 May 2021
Biodegradable materials are used in the manufacture of packaging and compostable films and various types of medical products. They have demonstrated a large number of potential practical applications in medicine and particularly in the treatment of various cardiac, vascular, and orthopedic conditions in adults as well in children. In our research, the extrusion-cooking technique was applied to prepare thermoplastic starch (TPS), which was then utilized to obtain environmentally friendly starch-based films. Potato starch was the basic raw material exploited. Polyvinyl alcohol and keratin were used as functional additives in amounts from 0.5 to 3%, while 20% of glycerol was harnessed as a plasticizer. The processing of the thermoplastic starch employed a single screw extruder-cooker with an L/D ratio of 16. The film blowing process was carried out using a film-blowing laboratory line with L/D = 36. FTIR Spectroscopy was applied for the assignment of the prominent functional groups. The results showed that the processing efficiency of thermoplastic starch with functional additives varied depending on the level of polyvinyl alcohol and keratin addition. Moreover, the FTIR data correlated with the changes in the physical properties of the tested films. The analysis of FTIR spectra revealed several changes in the intensity of bands originating from stretching vibrations characteristic of the –OH substituent. The changes observed depended on the presence/lack of the hydrogen bonding occurring upon interactions between the starch molecules and the various additives used. In addition, notable changes were observed in bands assigned to glycoside bonds in the starch. View Full-Text
Keywords: thermoplastic starch with functional additives; extrusion-cooking; biopolymer films; molecular spectroscopy and chemometric analysis; AFM; nanomechanical mapping and X-ray thermoplastic starch with functional additives; extrusion-cooking; biopolymer films; molecular spectroscopy and chemometric analysis; AFM; nanomechanical mapping and X-ray
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MDPI and ACS Style

Combrzyński, M.; Oniszczuk, T.; Kupryaniuk, K.; Wójtowicz, A.; Mitrus, M.; Milanowski, M.; Soja, J.; Budziak-Wieczorek, I.; Karcz, D.; Kamiński, D.; Kulesza, S.; Wojtunik-Kulesza, K.; Kasprzak-Drozd, K.; Gancarz, M.; Kowalska, I.; Ślusarczyk, L.; Matwijczuk, A. Physical Properties, Spectroscopic, Microscopic, X-ray, and Chemometric Analysis of Starch Films Enriched with Selected Functional Additives. Materials 2021, 14, 2673. https://doi.org/10.3390/ma14102673

AMA Style

Combrzyński M, Oniszczuk T, Kupryaniuk K, Wójtowicz A, Mitrus M, Milanowski M, Soja J, Budziak-Wieczorek I, Karcz D, Kamiński D, Kulesza S, Wojtunik-Kulesza K, Kasprzak-Drozd K, Gancarz M, Kowalska I, Ślusarczyk L, Matwijczuk A. Physical Properties, Spectroscopic, Microscopic, X-ray, and Chemometric Analysis of Starch Films Enriched with Selected Functional Additives. Materials. 2021; 14(10):2673. https://doi.org/10.3390/ma14102673

Chicago/Turabian Style

Combrzyński, Maciej, Tomasz Oniszczuk, Karol Kupryaniuk, Agnieszka Wójtowicz, Marcin Mitrus, Marek Milanowski, Jakub Soja, Iwona Budziak-Wieczorek, Dariusz Karcz, Daniel Kamiński, Sławomir Kulesza, Karolina Wojtunik-Kulesza, Kamila Kasprzak-Drozd, Marek Gancarz, Iwona Kowalska, Lidia Ślusarczyk, and Arkadiusz Matwijczuk. 2021. "Physical Properties, Spectroscopic, Microscopic, X-ray, and Chemometric Analysis of Starch Films Enriched with Selected Functional Additives" Materials 14, no. 10: 2673. https://doi.org/10.3390/ma14102673

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