Synthesis and Characterization of Star-Shaped Polylactic Acid with Polyhedral Oligomeric Silsesquioxanes

Xiao Hui Zhang; Wen Juan Gu; Hou Bin Li; Yi Xiang Tang; Long Qi Wu

doi:10.4028/www.scientific.net/AMM.200.397

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Synthesis and Characterization of Star-Shaped Polylactic Acid with Polyhedral Oligomeric Silsesquioxanes
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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 200Synthesis and Characterization of Star-Shaped...

Synthesis and Characterization of Star-Shaped Polylactic Acid with Polyhedral Oligomeric Silsesquioxanes

Abstract:

A series of star-shaped polylactic acid was synthesized using L-lactic acid (L-LA) and octa(γ-chloroammoniumpropyl) octasilsesquioxane (POSS-NH3Cl) by in the presence of stannous(II) octanoate (Sn(Otc)2) catalyst. The structures and properties of these dendritic polymers were characterized by FTIR, 1H-NMR and TGA, respectively. These results demonstrated that the chemical reaction between POSS-NH3Cl and L-LA had been taken place, and the novel star-shaped polylactic acid (POSS-g-PLLA) had been synthesized. And thermal properties, such as melting temperature and decomposition temperature, were obviously improved along with the increment of the added amount of POSS-NH3Cl. The decomposition temperature of POSS-g-PLLA was higher ca. 70°C higher than that of PLLA, also higher 65°C than that of POSS-NH3Cl/PLLA.

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Periodical:

Applied Mechanics and Materials (Volume 200)

Pages:

397-400

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.200.397

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Online since:

October 2012

Authors:

Xiao Hui Zhang, Wen Juan Gu, Hou Bin Li, Yi Xiang Tang, Long Qi Wu

Keywords:

Octa(γ-chloroammoniumpropyl) Octasilsesquioxane, PLLA, POSS-g-PLLA, Star-Shaped Polymer

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