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Poly(L ‑lactic acid)/Boron Nitride Nanocomposites: Influence of Boron Nitride Functionalization on the Properties of Poly(L ‑lactic acid)

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dc.contributor.author Sijla Rosely, C V
dc.contributor.author Shaiju, P
dc.contributor.author Bhoje Gowd, E
dc.date.accessioned 2020-02-25T14:30:53Z
dc.date.available 2020-02-25T14:30:53Z
dc.date.issued 2019-09-17
dc.identifier.citation Journal of Physical Chemistry B; 123(40):8599-8609 en_US
dc.identifier.uri https://pubs.acs.org/doi/pdf/10.1021/acs.jpcb.9b07743
dc.identifier.uri http://10.10.100.66:8080/xmlui/handle/123456789/3553
dc.description.abstract Differently functionalized boron nitride nanosheets (BNNSs) [hydroxyl (OH_BNNSs), amine (NH2_BNNSs), and poly(ethylene glycol) (PEG) (PEG_BNNSs)] were synthesized, and their effects on the structure and thermal properties of poly(l-lactic acid) (PLLA) along with those of the pristine BNNSs were studied. Highly dispersed nanocomposites were prepared using PLLA and 0.5 wt % of pristine/functionalized BNNSs via a solvent blending method. Homogeneous dispersion of BNNSs in the polymer matrix was confirmed using X-ray diffraction and scanning electron microscopy. Pristine BNNSs and OH_BNNSs accelerated the crystallization of PLLA as effective nucleating agents and favored the formation of the α form in melt-crystallized samples. On the other hand, NH2_BNNSs and PEG_BNNSs incorporated samples result in the moderate crystallization rate of PLLA and lead to the formation of a mixture of α and α′ forms similar to the PLLA. It is also found that thermal stability and thermal conductivity of PLLA nanocomposites significantly depend on the type of functionalization of BNNSs. At 0.5 wt % loading, the thermal conductivity enhancement is maximum for PEG_BNNSs incorporated PLLA (∼62%), and that is only 9% for pristine BNNSs incorporated PLLA. The thermal stability of PLLA nanocomposites was significantly improved by 32–41 °C depending on the type of functionalized BNNSs compared to PLLA. It is proposed that the strong interaction between functionalized BNNSs and PLLA matrix is responsible for the improved thermal management properties. en_US
dc.language.iso en en_US
dc.publisher American Chemical Society en_US
dc.subject Boron Nitride en_US
dc.subject Poly(L‑lactic acid) en_US
dc.title Poly(L ‑lactic acid)/Boron Nitride Nanocomposites: Influence of Boron Nitride Functionalization on the Properties of Poly(L ‑lactic acid) en_US
dc.type Article en_US


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  • 2019
    Research articles authored by NIIST researchers published in 2019

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