Synthesis of Star-Shaped PLA via Direct Melt Polycondensation: 1. Using L-LA as Starting Material

Abstract:

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Using 1,3,5-benzenetrioxyundecanol (mTU) as the core, and L-lactic acid (L-LA) as starting material, a novel star-shaped poly(L-lactic acid) (SPLLA) was synthesized via direct melt polycondensation with simple process and low-cost. The obtained biodegradable polymer SPLLA was systematically characterized with the intrinsic viscosity [η], FTIR, 1H-NMR, GPC and XRD. The Mw, Tg, Tm, ΔH, crystallinity, crystallite size of all SPLLA basically increased with the increase of the molar feed ratio n(L-LA) : n(mTU). When n(L-LA) : n(mTU) was 500:1, the biggest Mw was 8600, but all Mw meet the requirement for drug delivery application.

Info:

Periodical:

Advanced Materials Research (Volumes 152-153)

Edited by:

Zhengyi Jiang, Jingtao Han and Xianghua Liu

Pages:

1236-1239

DOI:

10.4028/www.scientific.net/AMR.152-153.1236

Citation:

Z. Y. Wang et al., "Synthesis of Star-Shaped PLA via Direct Melt Polycondensation: 1. Using L-LA as Starting Material", Advanced Materials Research, Vols. 152-153, pp. 1236-1239, 2011

Online since:

October 2010

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Price:

$35.00

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