Application of the long-chain linear polyester in plastification of PVC

Abstract

The plastification modification of poly (vinyl chloride) (PVC) with the long-chain linear polyester (LP) synthesized by linear dodecanedioic acid (DC12) or tetradecanedioic acid (DC14) with different diols is investigated. The processing characteristics, mechanical properties and extraction property of the PVC/LP blends in different solvents (xylene, cyclohexane, ethanol) were also studied in detail. All results were compared with that of the PVC plasticized with dioctyl phthalate (DOP). The results show that the molecular weight, molecular structure and loading of LP greatly influence the mechanical properties of the PVC/LP blends. The processability and the mechanical properties of PVC plasticized by LP are comparable to those of the corresponding PVC/DOP blends. However, the PVC/LP blends posses much better migration resistance property than the corresponding PVC/DOP blends, which makes the long-chain linear polyester become a very good plasticizer candidate for PVC industry.

Keywords

poly (vinyl chloride) / long-chain linear polyester / DOP / plasticizer / migration resistance

References

[1] Gupper A., Wilhelm P., Schiller M. Degradation of Poly(vinyl chloride) with Different Additives, Studied by Micro Raman Spectroscopy[J]. Polym. Polym. Compos., 2003, 11(2): 123-132.

[2] Bohnert T., Stanhope B., Gruszecki K., . Benzoate Plasticizers for Reducing Plastisol Viscosity and Fusion Temperature[J]. Polym. Polym. Compos., 2000, 8(8): 557-562.

[3] Pita V. J. R. R., Sampaio E. E. M., Monteiro E. E. C. Mechanical Properties Evaluation of PVC/Plasticizers and PVC/Thermoplastic Polyurethane Blends from Extrusion Processing[J]. Polym. Test., 2002, 21(5): 545-550.

[4] Groote P. D., Devaux J., Godard P. Effect of Benzenesulfonamide Plasticizers on the Glass-transition Temperature of Semicrystalline Polydodecamide[J]. J. Polym. Sci., Polym. Phys. Ed., 2002, 40(19): 2 208-2 218.

[5] Ma X., Sauer J. A., Hara M. Influence of Plasticizers on Poly(methyl Methacrylate) Ionomers[J]. Polymer, 1997, 38(17): 4 425-4 431.

[6] Thomas N. L. Alloying of Poly(vinyl chloride) to Reduce Plasticizer Migration[J]. J. Appl. Polym. Sci., 2004, 94(5): 2 022-2 031.

[7] Audic J. L., Reyx D., Brose J. C. Migration of Additives from Food Grade Polyvinyl Chloride (PVC) Films: Effect of Plasticization by Polymeric Modifiers Instead of Conventional Plasticizers[J]. J. Appl. Polym. Sci., 2003, 89(5): 1 291-1 299.

[8] Nakamura Y., Ikeda H., Kanbe M., . Morphology and Mechanical Properties of Poly(vinyl chloride)/Ethylene-Vinyl Alcohol Copolymer Blends[J]. Polym. Polym. Compos., 1999, 7(3): 187-193.

[9] Corradini E., Forti A., Curti E. Miscibility of PVC/EVA Hydrolyzed Blends by Viscosimetric, Microscopic and Thermal Analysis[J]. Eur. Polym. J., 1997, 33(10–12): 1 651-1 658.

[10] Jiménez A., Torre L., Kenny J. M. Thermal Degradation of Poly(vinyl chloride) Plastisols Based on Low-Migration Polymeric Plasticizers[J]. Polym. Degrad. Stabil., 2001, 73(3): 447-453.

[11] Ziska J. J., Barlow J. W., Paul D. R. Miscibility in PVC-polyester Blends[J]. Polymer, 1981, 22(7): 918-923.

[12] Barbiroli G., Lorenzetti C., Berti C., . Polyethylene Like Polymers. Aliphatic Polyesters of Dodecanedioic Acid 1. Synthesis and Properties[J]. Eur. Polym. J., 2003, 39(4): 655-661.

[13] J R Trotter. Polyester Waxes Based on 1,12-dodecanedioic Acid[P]. U.S. Pat., 4, 487, 919, 1984

[14] Titow W. V. PVC Plastics Properties, Processing and Application[M], 1990. New York: Elsevier.

[15] Van Oosterhout J. T., Gilbert M. Interactions between PVC and Binary or Ternary Blends of Plasticizers. Part I. PVC/Plasticizer Compatibility[J]. Polymer, 2003, 44(26): 8 081-8 094.

[16] Li Y., Zhang Y., Zhang Y. C. Mechanical Properties of Highdensity Polyethylene/Scrap Rubber Powder Composites Modified with Ethylene-propylene-diene Terpolymer, Dicumyl Peroxide, and Silicone Oil[J]. J. Appl. Polym. Sci., 2003, 88(8): 2 020-2 027.