Publication

Organosilicon-modified PETG/MWCNT nanocomposites with improved rheological, electrical and impact properties

2026

Abstract

This study investigated the effects of organosilicon modifiers on the rheological, thermal, mechanical and electrical properties of poly (ethylene) terephthalate glycol-modified (PETG) nanocomposites reinforced with multi-walled carbon nanotubes (MWCNTs). Three modifiers were synthesized and introduced into a PETG masterbatch containing 10 wt.% MWCNTs using melt extrusion. The modifiers reduced the complex viscosity of the composites, with the strongest effect observed for MOD2, for which the viscosity at 1 Hz decreased from 9.4 × 10 4 Pa·s for the unmodified PETG/MWCNT material to 2.3 × 10 4 Pa·s. Thermal analysis revealed a slight reduction in the start of degradation temperature due to changes in MWCNT dispersion, while the glass transition temperature remained unchanged. Mechanical tests showed improved impact resistance, with values increasing from 10.1 ± 1.16 kJ/m 2 (unmodified) to 22.2 ± 1.71 kJ/m 2 (MOD2). Electrical conductivity also improved significantly, reaching a maximum value of 2.38 ± 0.14 S/m. These improvements are attributed to improved MWCNT dispersion and interactions helped by organosilicon compounds.

Official source

https://infoscience.epfl.ch/entities/publication/df41398b-feab-4d6f-b518-16ff29123bc0

About this result

This page is automatically generated and may contain information that is not correct, complete, up-to-date, or relevant to your search query. The same applies to every other page on this website. Please make sure to verify the information with EPFL's official sources.

Graph Chat

Chat with Graph Search

Ask any question about EPFL courses, lectures, exercises, research, news, etc. or try the example questions below.

DISCLAIMER: The Graph Chatbot is not programmed to provide explicit or categorical answers to your questions. Rather, it transforms your questions into API requests that are distributed across the various IT services officially administered by EPFL. Its purpose is solely to collect and recommend relevant references to content that you can explore to help you answer your questions.

2026

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/df41398b-feab-4d6f-b518-16ff29123bc0

About this result

Related concepts (32)

Polyethylene terephthalate

Polyethylene terephthalate (or poly(ethylene terephthalate), PET, PETE, or the obsolete PETP or PET-P), is the most common thermoplastic polymer resin of the polyester family and is used in fibres for clothing, containers for liquids and foods, and thermoforming for manufacturing, and in combination with glass fibre for engineering resins. In 2016, annual production of PET was 56 million tons. The biggest application is in fibres (in excess of 60%), with bottle production accounting for about 30% of global demand.

Carbon nanotube

A carbon nanotube (CNT) is a tube made of carbon with a diameter in the nanometer range (nanoscale). They are one of the allotropes of carbon. Single-walled carbon nanotubes (SWCNTs) have diameters around 0.5–2.0 nanometers, about 100,000 times smaller than the width of a human hair. They can be idealized as cutouts from a two-dimensional graphene sheet rolled up to form a hollow cylinder. Multi-walled carbon nanotubes (MWCNTs) consist of nested single-wall carbon nanotubes in a nested, tube-in-tube structure.

Rheology

Rheology (riːˈɒlədʒi; ) is the study of the flow of matter, primarily in a fluid (liquid or gas) state, but also as "soft solids" or solids under conditions in which they respond with plastic flow rather than deforming elastically in response to an applied force. Rheology is a branch of physics, and it is the science that deals with the deformation and flow of materials, both solids and liquids. The term rheology was coined by Eugene C. Bingham, a professor at Lafayette College, in 1920, from a suggestion by a colleague, Markus Reiner.

Related publications (1)

Organosilicon-modified PETG/MWCNT nanocomposites with improved rheological, electrical and impact properties

Chat with Graph Search

Electronic properties and resonant states in Al-Mn(-Si) alloys