Plastomer

About: Plastomer is a research topic. Over the lifetime, 388 publications have been published within this topic receiving 4160 citations.

Viscoelastic relaxation mechanisms of conventional polypropylene toughened by a plastomer

Abstract: Plastomers are new alternatives that provide a higher impact strength in polypropylene synthesized by conventional methods. This study presents an analysis of the structure and thermal characterization of two sets of polypropylene/plastomer blends. The difference between the two polypropylene samples is their molecular weight. With the structural knowledge obtained, a comprehensive analysis of the different relaxation processes has been performed. Neither component is miscible. The area under the loss tangent curves provides preliminary information about how the toughness is enhanced with this type of impact modifier. © 2003 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys 41: 1878–1888, 2003

Effects of ultrasound on the morphology and properties of propylene-based plastomer/nanosilica composites

Abstract: Propylene-based plastomer/nanosilica composites, with a filler content of 1–4 wt%, were prepared by a specially designed ultrasound-assisted extrusion system that was developed in our laboratory. The effects of ultrasound on the morphology, as well as the rheological and mechanical properties of the composites, were studied in this paper. In spite of slight ultrasound-induced degradation of the polymeric matrix, the results showed that the strength and elongation of the composites at break, in most cases, still improve in the presence of ultrasound because of ultrasound-induced homogeneous dispersion of nanoparticles in the polymeric matrix (as confirmed by scanning electron microscope, transmission electron microscope and differential scanning calorimetry studies). Dynamic rheological measurements also indicate that ultrasound-induced compatibilization has a more predominant role than does degradation. From dynamic mechanical measurements, it was found that ultrasound-induced degradation results in a drop in the dynamic storage modulus and glass transition temperature for composites with 4 wt% filler content, whereas ultrasound-induced compatibilization enhances their loss factor values. By the presence of 100 W ultrasound during extrusion, SiO2 nanoparticles become smaller and their aggregations disappear, indicating that more homogeneous dispersion of SiO2 nanoparticles into propylene-based copolymer matrix is achieved.

High friction, non-slip, flexible and heat resistant plastic net

Abstract: A high friction, non-slip, flexible and heat resistant plastic net (10) which can be used in various applications, for example, as a truck bed liner. The net is a blend of plastics having different densities and peak melting points. The first component of the blend is preferably a very-low-density to high-density polyethylene or a metallocene polyethylene. The second component of the blend is preferably an ultra-low-density polyethylene plastomer.

Multilayer packaging film and process

Abstract: The present invention relates to a multilayer film for packaging, comprising: a. a sealing layer, comprising one or more of the following components: a ionomer, a cycloolefin copolymer, a low density polyethylene (LDPE) and a plastomer; b. at least one bulk layer, comprising one or more of the following components: a plastomer, ethylene vinyl acetate (EVA), a cycloolefin copolymer and a polyolefin elastomer; c. a barrier layer, comprising a vinylidene chloride homopolymer or copolymer and/or an ethylene vinyl alcohol polymer (EVOH); d. an abuse layer, comprising one or more of the following components: a high density polyethylene (HDPE), a plastomer, a LDPE, a ionomer, a linear low density polyethylene (LLDPE) and a cycloolefin copolymer. provided that at least one of the sealing or bulk layer comprises a plastomer and/or a cycloolefin copolymer. The present invention also relates to a vacuum skin packaging process, especially for the packaging of food like processed meats such as bacon and ham, a process for skin packaging employing the films of the present invention and packed articles comprising the films of the present invention.