Compatibilization of poly(vinyl chloride) with polyamide and with polyolefin by using poly(lauryllactam-random-caprolactam-block-caprolactone)

Abstract

The compatibilization of various poly(vinyl chloride) (PVC) blends was investigated. The blend systems were PVC-polyamide 12 (PA12), PVC-polypropylene (PP), and PVC-ethylene-propylene-diene rubber (EPDM) with a new compatibilizing agent, random-block terpolymer poly(-lauryllactam-random-⑀-caprolactam-block-⑀-caprolactone) or systems containing these copolymers. The results were compared to those obtained in previous studies using poly(-lauryllactam-block-⑀-caprolactone) copolymer. The new block copolymer was specially synthesized by reactive extrusion. Observation by scanning electron microscopy (SEM) revealed that compatibilized blends had a finer morphology than the noncompatibilized blends. Addition of 10 weight percent (wt%) of block copolymer proved to be sufficient to give a significant improvement of the mechanical properties of the immiscible PVC blends at room temperature and at high temperatures that were above the glass transition temperature of PVC. For polyolefins, a three-component compatibilizing system including maleated polypropylene, polyamide 12, and block copolymer was used. It was found that poly(-lauryllactam-random-⑀-caprolactam-block-⑀-caprolactone) was the more efficient compatibilizing agent for the modification of PVC-polyamide 12, PVC-polypropylene, and PVC-ethylene-propylene-diene rubber blends. J. VINYL ADDIT. TECHNOL., 11:95-110, 2005.

Effective recycling of end‐of‐life polyvinyl chloride foams in ethylene–propylene diene monomers rubber

“…Hence, compatibilizers of different nature have been used to improve adhesive properties between rubber and PVC phases. [23,34,35] For the current work, the compounding was performed without any compatibilizer to evaluate the effect of added PVC particles in EPDM.…”

Properties of poly(vinyl chloride) and polyesteramides blends

“…To modify the properties of PVC, polyamides or polyesteramides (based on ε‐caprolactone and lactams) can also be used 7–10. Poly[(ω‐laurolactam)‐ block ‐(ε‐caprolactone)] has successfully been applied as a compatibilizer of the PVC‐polyamide 12 blends or the PVC/PP blends 8, 9. The ester blocks of the copolymer lead to the PVC phase, as a result of a generally good miscibility of poly(ε‐caprolactone) (PCLO) with this polymer, while the polyamide blocks are oriented to the polyamide phase.…”

Possibilities of polyamide 12 with poly(vinyl chloride) blends recycling

“…PVC/PA blends containing predominantly PA with lower melting temperature have been studied recently [2][3][4][5][6][7]. The reason is commonly known -low thermal stability of PVC.…”