Paper Title:
Synthesis of Star-Shaped PLA via Direct Melt Polycondensation: 2. Using D,L-LA as Starting Material
  Abstract

Using 1,3,5-benzenetrioxyundecanol (mTU) as the core, and more cheaper D,L-lactic acid (D,L-LA) as starting material, a novel star-shaped poly(D,L-lactic acid) (SPDLLA) was synthesized via direct melt polycondensation with simple process and low-cost. The obtained biodegradable polymer SPDLLA was systematically characterized with the intrinsic viscosity [η], FTIR, 1H-NMR, GPC and XRD. The Tg and crystallinity of all SPDLLA were much lower than that of the linear poly(D,L-lactic acid). When n(D,L-LA) : n(mTU) was 120 : 1, the biggest Mw was 10800, which was bigger than that obtained from L-lactic acid (L-LA). 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
1301-1304
DOI
10.4028/www.scientific.net/AMR.152-153.1301
Citation
Z. Y. Wang, W. K. Hong, Y. F. Luo, Q. F. Wang, X. Xiao, "Synthesis of Star-Shaped PLA via Direct Melt Polycondensation: 2. Using D,L-LA as Starting Material", Advanced Materials Research, Vols. 152-153, pp. 1301-1304, 2011
Online since
October 2010
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Paul Heinz, Andreas Volek, Robert F. Singer, Markus Dinkel, Florian Pyczak, Matthias Göken, Michael Ott, Ernst Affeldt, Andreas Vossberg
Abstract:Brazing is a well established repair technique for high temperature components in both industrial gas turbines and aero engines....
294
Authors: Zhao Yang Wang, Chao Xu Mao, Yu Fen Luo, Shi He Luo, Jun Min Nan
Abstract: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)...
1236
Authors: Fu Chuan Huang, Yun Guo Xie, Mao Li Yang, Hui Juan Luo, Pan Tong, Hong Jun Li
Abstract:For high power density diesel engine operating characteristics and its unique compact structure, the development of new high power density...
171
Authors: Qian Zhang, Shu Wei Goh, Zhan Ping You
Abstract:The objective of this study is to investigate the possibility of using waste plastic as an additive to modify asphalt mixtures thereby...
824
Authors: Fang Qi Cheng
Chapter 3: Functional Manufacturing and Information Technology
Abstract:To construct an effective collaborative manufacturing alliance of enterprises under network environment, the conception of collaborative...
141