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Evaluation of expanded perlite behavior in PS/Perlite composites
https://orcid.org/0000-0002-4161-3482
Abstract In this study, composites based on PS/Perlite were prepared with 10 (P10) and 20 (P20) wt% of perlite by melt mixing in a twin screw extruder. The perlite effect was assessed by the composites morphological, thermal, mechanical and rheological properties. The photographs obtained by SEM revealed that some perlite's particles broke during the processes. Thermal analysis results showed that the addition of perlite did not affect the thermal stability of the PS matrix, but reduced its glass transition temperature about 20 °C. The comparison of the tensile property values indicated that perlite increased the elastic modulus by 23% and 31% for P10 and P20 composites, respectively, but also caused premature fracture of the materials. The rheology of PS/Perlite composites was evaluated at dynamic mode. The results revealed that the mineral filler addition to the PS matrix decreased the system's viscosity, highlighting its lubricant effect, which may be an interesting behavior for production of thermoformed packings with insulation ability, when compared to the neat PS.
Graphical abstract Display Omitted
Highlights Perlite increased the elastic modulus of the PS. Perlite did not affect the thermal stability of PS matrix. Perlite reduced the glass transition temperature of PS matrix. Perlite reduced the viscosity of composites in melt state, acting as lubricant agent. Cole-Cole plots indicating the absence of perlite aggregates in composites.
Evaluation of expanded perlite behavior in PS/Perlite composites
https://orcid.org/0000-0002-4161-3482
Abstract In this study, composites based on PS/Perlite were prepared with 10 (P10) and 20 (P20) wt% of perlite by melt mixing in a twin screw extruder. The perlite effect was assessed by the composites morphological, thermal, mechanical and rheological properties. The photographs obtained by SEM revealed that some perlite's particles broke during the processes. Thermal analysis results showed that the addition of perlite did not affect the thermal stability of the PS matrix, but reduced its glass transition temperature about 20 °C. The comparison of the tensile property values indicated that perlite increased the elastic modulus by 23% and 31% for P10 and P20 composites, respectively, but also caused premature fracture of the materials. The rheology of PS/Perlite composites was evaluated at dynamic mode. The results revealed that the mineral filler addition to the PS matrix decreased the system's viscosity, highlighting its lubricant effect, which may be an interesting behavior for production of thermoformed packings with insulation ability, when compared to the neat PS.
Graphical abstract Display Omitted
Highlights Perlite increased the elastic modulus of the PS. Perlite did not affect the thermal stability of PS matrix. Perlite reduced the glass transition temperature of PS matrix. Perlite reduced the viscosity of composites in melt state, acting as lubricant agent. Cole-Cole plots indicating the absence of perlite aggregates in composites.
Evaluation of expanded perlite behavior in PS/Perlite composites
https://orcid.org/0000-0002-4161-3482
Abstract In this study, composites based on PS/Perlite were prepared with 10 (P10) and 20 (P20) wt% of perlite by melt mixing in a twin screw extruder. The perlite effect was assessed by the composites morphological, thermal, mechanical and rheological properties. The photographs obtained by SEM revealed that some perlite's particles broke during the processes. Thermal analysis results showed that the addition of perlite did not affect the thermal stability of the PS matrix, but reduced its glass transition temperature about 20 °C. The comparison of the tensile property values indicated that perlite increased the elastic modulus by 23% and 31% for P10 and P20 composites, respectively, but also caused premature fracture of the materials. The rheology of PS/Perlite composites was evaluated at dynamic mode. The results revealed that the mineral filler addition to the PS matrix decreased the system's viscosity, highlighting its lubricant effect, which may be an interesting behavior for production of thermoformed packings with insulation ability, when compared to the neat PS.
Graphical abstract Display Omitted
Highlights Perlite increased the elastic modulus of the PS. Perlite did not affect the thermal stability of PS matrix. Perlite reduced the glass transition temperature of PS matrix. Perlite reduced the viscosity of composites in melt state, acting as lubricant agent. Cole-Cole plots indicating the absence of perlite aggregates in composites.
Evaluation of expanded perlite behavior in PS/Perlite composites
de Oliveira, Amanda Gerhardt (author) / Jandorno, Julio César Jr (author) / da Rocha, Elisson Brum Dutra (author) / de Sousa, Ana Maria Furtado (author) / da Silva, Ana Lucia Nazareth (author)
Applied Clay Science ; 181
2019-07-12
Article (Journal)
Electronic Resource
English
Production of expanded perlite
| British Library Online Contents | 1998
Preparation of fine expanded perlite
| British Library Online Contents | 1999