Reactive Compatibilization of Poly(ethylene terephthalate) and High-Density Polyethylene Using Amino-Telechelic Polyethylene

Alexander D. Todd, Ryan J. McEneany, Vasily A. Topolkaraev, Christopher W. Macosko, Marc A. Hillmyer

Research output: Contribution to journalArticlepeer-review

32 Scopus citations


Low molar mass (3-17 kg/mol) amino-telechelic polyethylene (ATPE) was used to reactively compatibilize poly(ethylene terephthalate) (PET) and high-density polyethylene (HDPE) via ester aminolysis of PET. A tert-butyloxycarbonyl (Boc)-protected polyethylene precursor was thermolytically deprotected during the melt-blending process to render the reactive amine termini. Spectroscopic analysis of a model reaction confirmed the presence of amide functionality in the resultant material. Through blending studies, we found that low loadings of ATPE (0.5 wt %) significantly reduced the volume of the dispersed HDPE phase particles by a factor of 8 when compared to a binary PET/HDPE blend as assessed by scanning electron microscopy (SEM). Mechanical analysis of the ATPE-compatibilized blends showed a 12-fold increase in the elongation at break over the unmodified PET/HDPE blend. Ultimately, the results here offer a new approach to reactively compatibilize and toughen PET/HDPE blends and open the door for other uses of amino-telechelic polyethylene.

Original languageEnglish (US)
Pages (from-to)8988-8994
Number of pages7
Issue number23
StatePublished - Dec 13 2016

Bibliographical note

Funding Information:
We graciously thank the Kimberly Clark Corporation for their financial support of this project. Partial support was provided by the NSF under the Center for Sustainable Polymers, CHE- 1413862. Parts of this work were carried out in the Characterization Facility, University of Minnesota, a member of the NSF-funded Materials Research Facilities Network via the MRSEC program.

Publisher Copyright:
© 2016 American Chemical Society.


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