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Abstract:

Films of PBAT/TPS (poly(butylene adipate-co-terephthalate)/thermoplastic starch) (starch plasticized with glycerol containing citric and stearic acids) without and with 0.6 wt% starch nanoparticles were produced by extrusion. The presence of nanoparticles during the extrusion process led to a higher degree of starch gelatinization improving starch compatibility with PBAT. Nanoparticles modified the interaction between the different components of the PBAT/TPS composite. The hydroxyl groups of the starch nanoparticles interacted with starch amylose by means of hydrogen bonds. In addition, nanoparticles modified the structure of the PBAT rigid segment (BT): a shift of Tm of BT toward lower temperatures and a slight shift of the relaxation of the BT segment to higher temperatures were observed. The incorporation of nanoparticles also had a reinforcing effect on the PBAT/TPS matrix. The composite presented slight increases of Young's modulus (E) and stress at break (σb) without affecting the strain at break (ϵb). The rate of biodegradability was improved with the use of starch nanoparticles. The composite showed faster deterioration than the matrix, showing the first changes in its tonality and breakdowns at only 6 days of burial in compost. © 2016 Society of Chemical Industry. © 2016 Society of Chemical Industry

Registro:

Documento: Artículo
Título:Influence of incorporation of starch nanoparticles in PBAT/TPS composite films
Autor:González Seligra, P.; Eloy Moura, L.; Famá, L.; Druzian, J.I.; Goyanes, S.
Filiación:LP & MC, Dep. de Física – IFIBA (CONICET), FCEyN, UBA, Ciudad Universitaria, CABA, 1428, Argentina
Department of Bromatological Analysis, College of Pharmacy, Federal University of Bahia, Barão of Geremoabo Street, Ondina, Salvador, Bahia 40171-970, Brazil
Palabras clave:biodegradability; PBAT; starch nanoparticles; thermal properties; TPS; Biodegradability; Chemical industry; Composting; Elastic moduli; Extrusion; Gelation; Hydrogen bonds; Nanoparticles; Starch; Thermodynamic properties; Extrusion process; Hydroxyl groups; Lower temperatures; PBAT; Polies (butylene adipate co terephthalate); Reinforcing effects; Starch gelatinization; Starch nanoparticles; Nanocomposite films
Año:2016
Volumen:65
Número:8
Página de inicio:938
Página de fin:945
DOI: http://dx.doi.org/10.1002/pi.5127
Título revista:Polymer International
Título revista abreviado:Polym. Int.
ISSN:09598103
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09598103_v65_n8_p938_GonzalezSeligra

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Citas:

---------- APA ----------
González Seligra, P., Eloy Moura, L., Famá, L., Druzian, J.I. & Goyanes, S. (2016) . Influence of incorporation of starch nanoparticles in PBAT/TPS composite films. Polymer International, 65(8), 938-945.
http://dx.doi.org/10.1002/pi.5127
---------- CHICAGO ----------
González Seligra, P., Eloy Moura, L., Famá, L., Druzian, J.I., Goyanes, S. "Influence of incorporation of starch nanoparticles in PBAT/TPS composite films" . Polymer International 65, no. 8 (2016) : 938-945.
http://dx.doi.org/10.1002/pi.5127
---------- MLA ----------
González Seligra, P., Eloy Moura, L., Famá, L., Druzian, J.I., Goyanes, S. "Influence of incorporation of starch nanoparticles in PBAT/TPS composite films" . Polymer International, vol. 65, no. 8, 2016, pp. 938-945.
http://dx.doi.org/10.1002/pi.5127
---------- VANCOUVER ----------
González Seligra, P., Eloy Moura, L., Famá, L., Druzian, J.I., Goyanes, S. Influence of incorporation of starch nanoparticles in PBAT/TPS composite films. Polym. Int. 2016;65(8):938-945.
http://dx.doi.org/10.1002/pi.5127