Compatibilizing effect of poly(hydrogenated butadiene-methyl methacrylate) copolymer for PVC/LLDPE blends

✍ Scribed by Zhou Qing-Ye; Zhang Bang-Hua; Song Mou-Dao; He Bing-Lin

• Book ID: 103076392
• Publisher: Elsevier Science
• Year: 1996
• Tongue: English
• Weight: 495 KB
• Volume: 32
• Category: Article
• ISSN: 0014-3057
• DOI: 10.1016/0014-3057(96)00047-x

✦ Synopsis

The mechanical properties of incompatible polymer pairs, and so blend compatibility, may be improved by the addition of well-chosen copolymers which can act as efficient compatibilizers. Poly(butadiene-b-methyl methacrylate) copolymer (PBD-b-PMMA) with a 1,4-PBD block (more than 80%) has been synthesized by anionic polymerization. Hydrogenation of the PBD chain produces a (HPBD-b-PMMA) copolymer which is a good compatibilizer for blends of poly(viny1 chloride) and linear low density polyethylene (PVC/LLDPE). Results of the Charpy impact strength and the tensile mechanical behaviour demonstrate that the copolymers can significantly enhance the compatibility of the blends. Nevertheless, the compatibilizing efficiency depends on a combination of the molecular weight, the copolymer concentration and the composition of blends.