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Issue 5, 2020
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Tailor-made thermoplastic elastomers: customisable materials via modulation of molecular weight distributions

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Abstract

The ability to change polymer properties has in the past largely been a factor of modulating the molecular weight, molecular weight distribution breadth, crosslinking, or branching. The use of controlled MWD shape has recently emerged as a promising avenue towards modifying polymer properties. Taking advantage of molecular weight distribution shape, we report a simple and efficient approach for tuning material properties in polystyrene-block-polyisoprene-block-polystyrene (SIS) thermoplastic elastomers (TPEs). We find that the skew of the MWD function governs tensile properties and can be used as a handle to predictably vary polymer toughness while reducing energy dissipation.

Graphical abstract: Tailor-made thermoplastic elastomers: customisable materials via modulation of molecular weight distributions

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Supplementary files

Article information


Submitted
18 Oct 2019
Accepted
16 Dec 2019
First published
17 Dec 2019

This article is Open Access
All publication charges for this article have been paid for by the Royal Society of Chemistry

Chem. Sci., 2020,11, 1361-1367
Article type
Edge Article

Tailor-made thermoplastic elastomers: customisable materials via modulation of molecular weight distributions

S. I. Rosenbloom, D. T. Gentekos, M. N. Silberstein and B. P. Fors, Chem. Sci., 2020, 11, 1361
DOI: 10.1039/C9SC05278J

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