Compatibilization of immiscible blends of polypropylene and isosorbide containing copolyester with silica nanoparticles

Abstract

In the present study, compatibilization of immiscible blends of polymers was investigated based on the Pickering emulsion concept with various mixing procedures. Silica nanoparticles were incorporated into poly (1,4‐cyclohexanedimethylene isosorbide terephthalate) (PEICT)/isotactic polypropylene (iPP) blends. Localization of nanoparticles was effectively modified by varying mixing procedures. Relocation of hydrophilic silica occurred in a secondary mixing procedure with the PEICT, which has relatively high affinity when primarily mixed with iPP. The final location of the silica nanoparticles was confirmed by SEM images. SEM and an optical microscope were used to follow morphological change. By simply changing the mixing procedure, the hydrophilic silica nanoparticles were able to perform the role of a morphology modifier successfully without modifying the surface characteristics. The mechanical properties and crystallization behavior were also compared depending on the surface characteristics of the silica nanoparticles and their final localization.

Enhancing cellular structure, mechanical properties, thermal stability and flame retardation of EVA/NR blend nanocomposite foams by silicon dioxide-based flame retardant

“…In an immiscible polymer blend, the solid fillers confined at the interface of two polymers act as physical barrier to prevent the coalescence of the minor phase. 26-28 Therefore, the observed NR domain size reduction showed that the flame retardant SiO 2 fillers had a compatibilizing effect due to coalescence suppression in the EVA/NR/SiO 2 blend nanocomposites. As far as we know, this is the first study addressing the use of flame retardant SiO 2 as morphological modifier to improve compatibility in the immiscible polymer blend.…”

Dyeing and Antibacterial Properties of Chemically Recycled PET Thermal-Bonded Nonwovens Dyed with Terminalia chebula Dye

“…In particular, thpolyester plastics, including polyethylene terephthalate (PET) and polybutylene terephthalate (PBT), have been widely used in textile fibers, nonwovens, films, engineering fields, and packaging materials. Polyester can be easily collected and recycled into end products, unlike other conventional polymer materials [1,2].…”