ISSN 2594-5327
69° Congresso Anual da ABM - Internacional — vol. 69, num.69 (2014)
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Nowadays, population growth and the interest of food industry, makes the research and applications of biodegradable polymers increase, because under favorable conditions its degradations may occur within weeks or in a few months, reducing the environmental impact. This work presents the processing and characterization of flexible films by the incorporation of 3 % (% wt) of modified bentonite light green clay in the Copolyester/PLA biodegradable blend. The clay incorporation was carried out by melt-mixing processing, using a twin screw extruder machine. The films were obtained by cast extrusion tape. The films obtained were submitted to tensile tests, SEM and XRD analysis, and the correlation between their properties was discussed. The XRD results of clay showed that the quaternary salt and sodium carbonate addition increased the interlayer distance of clay making it easier to intercalation of blend in the nanoclay. The XRD results of PBAT/PLA/Clay nanocomposite show no characteristic organoclay peaks. This result suggests intercalation between nanoclay and matrix (blend). The tensile test results showed an increase of around 30% in tensile strength at break of nanocomposite film when compared with blend film.
Nowadays, population growth and the interest of food industry, makes the research and applications of biodegradable polymers increase, because under favorable conditions its degradations may occur within weeks or in a few months, reducing the environmental impact. This work presents the processing and characterization of flexible films by the incorporation of 3 % (% wt) of modified bentonite light green clay in the Copolyester/PLA biodegradable blend. The clay incorporation was carried out by melt-mixing processing, using a twin screw extruder machine. The films were obtained by cast extrusion tape. The films obtained were submitted to tensile tests, SEM and XRD analysis, and the correlation between their properties was discussed. The XRD results of clay showed that the quaternary salt and sodium carbonate addition increased the interlayer distance of clay making it easier to intercalation of blend in the nanoclay. The XRD results of PBAT/PLA/Clay nanocomposite show no characteristic organoclay peaks. This result suggests intercalation between nanoclay and matrix (blend). The tensile test results showed an increase of around 30% in tensile strength at break of nanocomposite film when compared with blend film.
Palavras-chave
Biodegradable polymer; Clay; Flexible films; Mechanical properties
Biodegradable polymer; Clay; Flexible films; Mechanical properties
Como citar
Andressa Alves da Silva;
Valquíria Alves da Silva;
Boniface Tiimob;
Vijaya Kumar Rangari;
Shaik Jeelani;
Francisco Rolando Valenzuela-Diaz;
Esperidiana Augusta Barretos de Moura.
EFFECTS OF THE INCORPORATION OF CLAY ON PROPERTIES OF THE BIODEGRADABLE COPOLYESTER/PLA FLEXIBLE FILM
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p. 8165-8178.
In: 69° Congresso Anual da ABM - Internacional,
São Paulo - Brasil,
2014.
ISSN: 2594-5327
, DOI 10.5151/1516-392X-24847
