PVC and PES waste/nanoclay mixtures, their preparation and properties

Mixtures of PVC and PES waste (shredded fibers) were prepared in order to find way how the waste of PES raster used in hydroisolatic foils can be re-used. After the grinding of waste from mentioned foils this waste is divided... [ view full abstract ]

Mixtures of PVC and PES waste (shredded fibers) were prepared in order to find way how the waste of PES raster used in hydroisolatic foils can be re-used. After the grinding of waste from mentioned foils this waste is divided into three different fractions. The first one is PES shredded material with the rest of plasticised PVC, which is possible to re-work without problems and it is possible to add it into the origin mixture for the production of hydroisolatic foils. The next two fractions obtain significantly less of PVC material and here it is necessary to add PVC and to find the optimal way for their mixing into the material with required properties. In order to find the way of PES waste treatment and other nanofiller synergy, to the prepared samples of PVS/PES waste the montmorillonite in one concentration was added. The influence of it on the observed properties was studied.

There exist some studies about the recycling of PVC [1], but none about the combination of PVC and PES shredded material obtained in the form of waste. In our work all three fractions were added into two types of PVC and there were mixed on double roll equipment (to use the conditions and way as close to the practise as possible). Mechanical properties were measured on the prepared samples (bodies were cut from the rolled film) and the values of pure PVC mixture and mixtures wtih different filling of PES shredded material were observed. The same procedure was applied on the samples with nanofiller. One of results is shown in the Graph 1.
This work was supported by project of TACR TH01030054.