ISSN 2594-5327
59th Congresso anual — Vol. 59 , num. 1 (2004)
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Abstract
The aim of this work is to study the influence of salt identity and processing temperature on the mechanical and thermal properties of PP/Bentonite nanocomposite systems. The nanocomposites were prepared with clay contents of 1 and 3 wt% in a TW-100 counter rotating twin screw extruder coupled to a HAAKE System 90 Rheometer operating with two temperatures profiles (180 and 210ºC) at 60 rpm screw speed. Three different composites reinforced with natural, dodigen salt modified and cetremide salt modified bentonites were manufactured. After the extrusion, the composites were air-cooled, ground and dried in an air-circulating oven at 110ºC for 6 hours before being compression molded at the same processing temperature, i.e., 180 and 210ºC at kgf/cm² for 5 minutes and a 5 min pre-compression time. The samples were thermally and mechanically characterized. Best overall mechanical and thermal properties were exhibited by the PP/cetremide modified bentonite system. Best mechanical properties were exhibited by the composites processed at 210ºC.
The aim of this work is to study the influence of salt identity and processing temperature on the mechanical and thermal properties of PP/Bentonite nanocomposite systems. The nanocomposites were prepared with clay contents of 1 and 3 wt% in a TW-100 counter rotating twin screw extruder coupled to a HAAKE System 90 Rheometer operating with two temperatures profiles (180 and 210ºC) at 60 rpm screw speed. Three different composites reinforced with natural, dodigen salt modified and cetremide salt modified bentonites were manufactured. After the extrusion, the composites were air-cooled, ground and dried in an air-circulating oven at 110ºC for 6 hours before being compression molded at the same processing temperature, i.e., 180 and 210ºC at kgf/cm² for 5 minutes and a 5 min pre-compression time. The samples were thermally and mechanically characterized. Best overall mechanical and thermal properties were exhibited by the PP/cetremide modified bentonite system. Best mechanical properties were exhibited by the composites processed at 210ºC.
Keywords
nanocomposites, polypropylene, bentonite, processing temperature, mechanical properties
nanocomposites, polypropylene, bentonite, processing temperature, mechanical properties
How to cite
Silva, Jânia Betânia Alves da; Macêdo, Juliana de Castro; Leal, Elvia; Gomes, Ailton de Souza; Carvalho, Laura Hecker de; Silva, Suédina Maria Lima.
QUATERNARY AMMONIUM SALT AND PROCESSING TEMPERATURE EFFECTS ON THE PROPERTIES OF PP/BENTONITE NANOCOMPOSITES,
p. 676-684.
In: 59th Congresso anual,
São Paulo, Brasil,
2004.
ISSN: 2594-5327, DOI 10.5151/2594-5327-3697
