Preparation and Characterization of Copolymer of Lactic Acid and N, N-Bis (hydroxyethyl) Glycin

Ji Xing Xie; Ying Song; Shan Zhao

doi:10.4028/www.scientific.net/AMR.739.3

Paper Titles

Preface

Preparation and Characterization of Copolymer of Lactic Acid and N, N-Bis (hydroxyethyl) Glycin
p.3

Reconstruction of the Growth History of a Large Synthesized Diamond Crystal by Synchrotron Topography
p.7

Reduction Nitridation Synthesis of Bauxite Based β-SiAlON by Aluminum / Silicon Compound
p.12

Experimental Study on Unsupported Nano-MoS₂ Catalyst for Deep Desulfurization Fuel Oil
p.16

Carbon-Coated, Bismuth-Substituted, Lithium Iron Phosphate as Cathode Material for Lithium Secondary Batteries
p.21

Study on a Novel Structure of Zn Phenanthroline Malic Acid Hydrate, [Zn (C₁₂H₈N₂)(C₄H₄O₅)(H₂O)](H₂O)
p.26

Study on a Structure of 2,6-pyridine-dicarboxylic Acid Cobalt Calcium Hexahydrate
p.30

Study on a Structure of Manganese Oxide, Mn₃O₆(H₂O)₂
p.34

HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 739Preparation and Characterization of Copolymer of...

Preparation and Characterization of Copolymer of Lactic Acid and N, N-Bis (hydroxyethyl) Glycin

Abstract:

Branched copolymer of lactic acid/bicine (N, N-bis (hydroxyethyl) glycin) was prepared directly by melt polycondensation from lactic acid and bicine. The branched structure of copolymer of lactic acid/bicine was characterized by ¹H NMR and intrinsic viscosity. Although the molecular weigh of copolymer was lower than that of homopolymer of lactic acid, the hydroxyl number of the copolymer was higher than that of homopolymer. All the data indicated the molecule structure of copolymer was branched. Compared with homopolymer of lactic acid, the crystallinity of the branched copolymer decreased and the thermal stability increased.

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Advanced Materials Research (Volume 739)

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3-6

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https://doi.org/10.4028/www.scientific.net/AMR.739.3

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Online since:

August 2013

Authors:

Ji Xing Xie, Ying Song, Shan Zhao

Keywords:

Amino Acid, Copolymer, Melt Polycondensation, N, N-Bis (hydroxyethyl) Glycin, Poly(lactic acid) (PLA)

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