Rheological behaviour of VPVC/RPVC blends

Different blends of virgin pipe-grade PVC and PVC recyclate according to th eir rheological behaviour, processability and mechanical properties have be en investigated. Our results showed that an easy and simple way to improve processability of PVC compounds for pipes was to blend them with recycled P VC obtained from postconsumed oil bottles, which indicated very good proces sing behaviour. Energy and time savings up to 80% depending on the amount o f the added recyclate without depressing the mechanical properties have bee n noticed. In addition, lower processing temperature has been achieved.