polymers

Grafting of thermotropic fluorinated mesogens on polysiloxane to improve the processability of linear low-density polyethylene

TSCPFLCP is a polysiloxane grafted with thermotropic fluorinated mesogens, which when blended with LLDPE reduces melt torque, broadens the processing window, ameliorates melt fracture, and enhances mechanical properties. The TSCPFLCP exhibits a smectic liquid crystal phase and high thermal decomposition temperature. These improvements are achieved at a low concentration of 0.5 wt% TSCPFLCP, indicating its effectiveness as a processing aid for LLDPE. The researchers were able to use a Linkam THMS600E stage to investigate the temperature-dependent texture of the polymer.

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An Image is Everything: A Tutorial on Choosing and Using the Components of a Dynamic Data Capture System

Linkam provide sample characterisation solutions across a range of temperature and environmental control methods which can be used in combination with microscopic and spectroscopic analysis techniques. Here, we share our expertise in temperature-controlled microscopy with a discussion of how to assemble a dynamic data capture and imaging system.

Access the full version here: https://doi.org/10.1017/S1551929520001558

Stacey, D., & Gurney, R. (2020). An Image is Everything: A Tutorial on Choosing and Using the Components of a Dynamic Data Capture System. Microscopy Today, 28(6), 44-49. doi:10.1017/S1551929520001558

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Flow-induced crystallisation of polymers from aqueous solution

Researchers used Linkam’s CSS450 to replicate the mechanical properties of natural silk by creating a synthetic polymer that solidifies when subject to flow. Using temperature-controlled shear in the aqueous phase they induce polymer crystallisation, providing an alternative low-energy polymer processing route.

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Full Open Access article availble via CC BY 4.0

Dunderdale, Gary J., et al. "Flow-induced crystallisation of polymers from aqueous solution." Nature communications 11.1 (2020): 1-9.

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Inorganic Nanotube Mesophases Enable Strong Self-Healing Fibers

Using Linkam’s mechanical testing stage, a team of researchers at Imperial College London added geo-inspired double-walled nanotubes to a polymer matrix in order to improve the tensile properties.

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Full Open Access article availble via CC BY

Inorganic Nanotube Mesophases Enable Strong Self-Healing Fibers Won Jun Lee, Erwan Paineau, David Benbow Anthony, Yulin Gao, Hannah Siobhan Leese, Stéphan Rouzière, Pascale Launois, and Milo Sebastian Peter Shaffer* ACS Nano 2020, 14, 5, 5570–5580 Publication Date:April 7, 202

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Synchrotron X-ray scattering study on amorphous poly(ethylene furanoate) under uniaxial deformation

Researchers combine the mechanical testing and temperature control capabilities of Linkam’s mechanical testing system with x-ray scattering techniques (WAXS/SAXS) to elucidate the crystallisation and deformation induced orientation as a function of stress-strain behaviour and temperature.

Stretching-Induced Uniform Micropores Formation: An in Situ SAXS/WAXS Study

By stretching lamellar polymer films at various temperatures, researchers were able to prepare microporous membranes. They performed SAXS/WAXS characterisation on the stretched samples, and for the first time clarifying the fibre connecting bridges that form when the composite is stretch at raised temperatures. Read how Linkam’s mechanical testing system was key to this research.