Effects of Compatibilizers in Void Formation: Biaxially-Oriented Polyethylene Terephthalate/Polyphenylene Ether Blend Film

• Published in: Macromolecular research 2020, 28(6), , pp.605-614
• Main Authors: Han, Kweon Hyung, Kim, Woo Nyon, Kim, Juyoung
• Format: Article
• Language: English
• Subjects: Characterization and Evaluation of Materials; Chemistry; Chemistry and Materials Science; Compatibility; Compatibilizers; Complex Fluids and Microfluidics; Morphology; Nanochemistry; Nanotechnology; Physical Chemistry; Polyesters; Polyethylene terephthalate; Polymer Sciences; Polyphenylene oxides; Polystyrene resins; Properties (attributes); Rheological properties; Rheology; Soft and Granular Matter; Surface roughness; Tensile strength; 고분자공학
• ISSN: 1598-5032; 2092-7673
• DOI: 10.1007/s13233-020-8075-3

A functionally effective compatibilizer for PET/PPE blends is highly necessary to fabricate white opaque polyester film having high reflectance through drawing process. In this study, the effects of three different compatibilizers (SAN- g -MAH, SMA-16 and polystyrene- g -oxazoline PS- g -OXA) on the morphological, thermal, mechanical, and rheological properties in the PET/PPE (70/30, wt%) blend system were investigated. For the morphological studies, upon the addition of 7 part(s) per hundreds by weight (phr) of PS- g -OXA, the smallest domain size was observed among the three types used as a compatibilizer. Similarly, for the mechanical and rheological studies, upon the addition of 7 phr of PS- g -OXA, the optimal properties among three different compatibilizers were demonstrated due to the increased tensile strength and complex viscosity. For the thermal study, when the amount of PS- g -OXA added as a compatibilizer exceeded the threshold of the blend system, the T g of the polyphenylene ether (PPE) was exhausted. In the morphological studies, the compatibilization effect was observed in the surface roughness of the film after stretching. It was concluded that PS- g -OXA was the effective compatibilizer for improving the reflectivity to make white opaque polyester film in PET/PPE blend system. It was concluded that this was due to compatibilization effects. Based on the results, the changes in properties were observed for biaxially oriented polyethylene terephthalate (PET)/PPE (70:30, wt%) blend films.