Boron Nitride Nanosheets (BNNSs) Chemically Modified by “Grafting-From” Polymerization of Poly(caprolactone) for Thermally Conductive Polymer Composites

Jinseong Lee, Haejong Jung, Seunggun Yu, Suk Man Cho, Vimal K. Tiwari, Dhinesh Babu Velusamy, Cheolmin Park

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

To meet the growing demand for rapid heat dissipation in electronic devices to ensure their reliable performance with a high level of safety, many polymer composites with thermally conductive but electrically insulating 2D boron nitride nanosheets (BNNSs) are being developed. Here we present an efficient way to enhance the thermal conductivity (TC) of a polymer composite by means of “grafting-from” polymerization of a poly(caprolactone) (PCL) onto BNNSs. The BNNSs, which were exfoliated from bulk BN by means of ultra-sonication, were prepared by means of radical oxidation. These oxidized BNNSs (oxi-BNNSs) were employed as initiators for subsequent ring-opening polymerization of PCL, which successfully resulted in PCL chemically grafted onto BNNSs (PCL-g-BNNSs). The excellent dispersion of PCL-g-BNNSs in common solvents allowed us to readily fabricate a polymer composite that contained PCL-g-BNNSs embedded in a PCL matrix, and the composite showed TC values that were five and nine times greater in the out-of-plane and in-plane mode, respectively, than those of pristine PCL.

Original languageEnglish
Pages (from-to)1921-1928
Number of pages8
JournalChemistry - An Asian Journal
Volume11
Issue number13
DOIs
Publication statusPublished - 2016 Jul 5

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Nanosheets
Polymerization
Polymers
Thermal Conductivity
Composite materials
Thermal conductivity
Sonication
Ring opening polymerization
Heat losses
Hot Temperature
polycaprolactone
boron nitride
Safety
Equipment and Supplies
Oxidation

All Science Journal Classification (ASJC) codes

  • Chemistry(all)

Cite this

Lee, Jinseong ; Jung, Haejong ; Yu, Seunggun ; Man Cho, Suk ; Tiwari, Vimal K. ; Babu Velusamy, Dhinesh ; Park, Cheolmin. / Boron Nitride Nanosheets (BNNSs) Chemically Modified by “Grafting-From” Polymerization of Poly(caprolactone) for Thermally Conductive Polymer Composites. In: Chemistry - An Asian Journal. 2016 ; Vol. 11, No. 13. pp. 1921-1928.
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Boron Nitride Nanosheets (BNNSs) Chemically Modified by “Grafting-From” Polymerization of Poly(caprolactone) for Thermally Conductive Polymer Composites. / Lee, Jinseong; Jung, Haejong; Yu, Seunggun; Man Cho, Suk; Tiwari, Vimal K.; Babu Velusamy, Dhinesh; Park, Cheolmin.

In: Chemistry - An Asian Journal, Vol. 11, No. 13, 05.07.2016, p. 1921-1928.

Research output: Contribution to journalArticle

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