pps proceeding - Abstract Preview
pps proceeding
Symposium: S06 - Nanocomposites
Poster Presentation
 
 

Study about the mechanical properties of PCL and PCL systems with clay.

França Danyelle Campos (1)*, Morais Dayanne Diniz (1), Bezerra Elieber Barros (1), Araújo Edcleide Maria (1), Wellen Renate Maria (2)

(1) Federal University of Campina Grande - UFCG - Paraíba - Brazil, (2) Institute of Technology Pernambuco - ITEC - Paraíba - Brazil

Over the years we kept changing our habits. The rapid disposal of packages and increased use of polymers in all branches of the industry, made these materials responsible for the accumulation of solid waste. Because of this, many researches come up with the objective to solve this problem. In this context, the biodegradable polymers appear to be a promising solution. According to ASTM, biodegradable polymers are degradable polymers in which the degradation results first from the action of the microorganisms of natural occurrence such as fungi, bacteria and algae. Among the biodegradable polymers the Poly(Ɛ - caprolactone) has distinguished itself by presenting properties as bio reabsorption, biocompatibility and compatibility with a wide variety of processing techniques of thermoplastics. Although the PCL presents good mechanical properties, the addition of inorganic fillers to it as objective to improve their properties, facilitate the process and to expand their applications. Inorganic fillers such as clays often need a treatment to make it chemically compatible with the polymeric matrix, therefore, it is necessary for such a superficial modification to make them organophilic clays. In this work, polymer systems were obtained using the PCL as matrix and as filler a clay, industrialized(MMT) and organophilizated(OMMT). The concentrated polymers of PCL and clay were prepared by the method of intercalation by melting, using a kinetic mixer. After the completion of this procedure, there was a process in a twin-screw co- rotating extruder where the PCL and systems with clays with nominal concentration of 3 % in weight of MMT and OMMT were processed, then the resulting material was subjected to the molding process by injection. By XRD, the presence of the characteristic peak of the clay in the systems showing a possible interleaved structure was observed. The test of heat deflection temperature(HDT) showed a sharp increase in temperature with the addition of clay. The p