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Olefin Metathesis Polymerization: Overview

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Recently, the development of olefin metathesis polymerization advanced the field of polymer synthesis. Simply put, the reorganization of substituents on their double bonds between two olefins in the presence of a catalyst is known as the olefin metathesis reaction. The use of metathesis reaction for polymer synthesis is called olefin metathesis polymerization.
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Synthesis of Programmable Main-chain Liquid-crystalline Elastomers Using a Two-stage Thiol-acrylate Reaction

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Published on: January 19, 2016

Melt compounding with graphene to develop functional, high-performance elastomers.

Sherif Araby¹, Izzuddin Zaman, Qingshi Meng

¹School of Engineering, University of South Australia, SA5095, Australia.

|March 29, 2013

Summary

This study uses cost-effective graphene platelets (GnPs) to reinforce ethylene propylene diene monomer rubber (EPDM). The composite shows significantly enhanced electrical, thermal, and mechanical properties, extending product lifespan and reducing waste.

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Strain Sensing Based on Multiscale Composite Materials Reinforced with Graphene Nanoplatelets

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Published on: November 7, 2016

Area of Science:

Materials Science
Polymer Science
Nanotechnology

Background:

Graphene oxide use in elastomers is limited by defects and cost.
Elastomers require reinforcement for improved mechanical properties and durability.

Purpose of the Study:

To investigate the use of cost-effective graphene platelets (GnPs) for reinforcing ethylene propylene diene monomer rubber (EPDM).
To evaluate the impact of GnPs on the electrical, thermal, and mechanical properties of EPDM composites.

Main Methods:

Melt compounding of GnPs with EPDM using industrial facilities.
Characterization of GnP dispersion, electrical conductivity, thermal conductivity, modulus, and tensile strength.

Main Results:

Uniform dispersion of GnPs in EPDM matrix observed, with some clustering.
Electrical conductivity percolation threshold at 18 vol% GnPs.
Significant enhancements in thermal conductivity (417% at 45 vol% GnPs), modulus (710% at 26.7 vol% GnPs), and tensile strength (404% at 26.7 vol% GnPs).

Conclusions:

Cost-effective GnPs offer a viable alternative to graphene oxide for elastomer reinforcement.
The fabricated GnP-EPDM composites exhibit superior properties, potentially prolonging service life.
This approach can reduce thermosetting waste by enhancing the durability of elastomeric products.