Direct Condensation Polymerization of L-Lactic Acid Catalyzed by Distannoxane

1996 ◽  
Vol 25 (3) ◽  
pp. 225-226 ◽  
Author(s):  
Junzo Otera ◽  
Kazuko Kawada ◽  
Toru Yano
Keyword(s):  
Lactic Acid ◽  
Condensation Polymerization ◽  
Acid Catalyzed ◽  
Direct Condensation

Direct condensation polymerization of lactic acid

1999 ◽  
Vol 144 (1) ◽  
pp. 277-287 ◽  
Author(s):  
Soo Hyun Kim ◽  
Young Ha Kim
Keyword(s):  
Lactic Acid ◽  
Condensation Polymerization ◽  
Direct Condensation

scholarly journals Cyclic Oligolactic Acid in Direct Polycondensation PLLA and Its Extraction with Organic Solvent

2014 ◽  
Vol 2014 ◽  
pp. 1-7 ◽  
Author(s):  
Keiichiro Nomura ◽  
Yuta Nakatsuchi ◽  
Ryugo Shinmura ◽  
Sommai Pivsa-Art ◽  
Weraporn Pivsa-Art ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Lactic Acid ◽  
Selective Extraction ◽  
Condensation Polymerization ◽  
Direct Polycondensation ◽  
H Nmr ◽  
Repeat Units ◽  
Molecular Inclusion ◽  
Cyclic Compounds ◽  
Direct Condensation

The contents of poly(L-lactic acid) (PLLA) prepared by direct condensation polymerization without using a catalyst were studied. 1H NMR and mass spectrometry analyses suggested that PLLA contained cyclic oligo(L-lactic acid) (c-OLLA) with 3–20 repeat units. Notably, only c-OLLA was extracted and isolated using hexane or cyclohexane at 4°C; thus the hydrophobicity, topology, and temperature dependence of the solubility of the obtained PLLA enabled the selective extraction of c-OLLA. The effect of cyclic compounds on direct polycondensation and the potential for c-OLLA to form molecular inclusion complexes were also discussed.

Basic Properties of Polylactic Acid Produced by the Direct Condensation Polymerization of Lactic Acid

1995 ◽  
Vol 68 (8) ◽  
pp. 2125-2131 ◽  
Author(s):  
Masanobu Ajioka ◽  
Katashi Enomoto ◽  
Kazuhiko Suzuki ◽  
Akihiro Yamaguchi
Keyword(s):  
Lactic Acid ◽  
Polylactic Acid ◽  
Condensation Polymerization ◽  
Basic Properties ◽  
Direct Condensation

scholarly journals Direct condensation polymerization of N-alkylated p-aminobenzoic acid and packing of rigid-rod main chains with flexible side chains

2010 ◽  
Vol 42 (1) ◽  
pp. 72-80 ◽  
Author(s):  
Yuji Shibasaki ◽  
Yoko Abe ◽  
Natsuki Sato ◽  
Atsuhiro Fujimori ◽  
Yoshiyuki Oishi
Keyword(s):  
Side Chains ◽  
Condensation Polymerization ◽  
Aminobenzoic Acid ◽  
Rigid Rod ◽  
Direct Condensation

The conversion of glycerol to lactic acid catalyzed by ZrO2-supported CuO catalysts

2016 ◽  
Vol 283 ◽  
pp. 759-767 ◽  
Author(s):  
Gao-Yuan Yang ◽  
Yi-Hu Ke ◽  
Hui-Fang Ren ◽  
Chun-Ling Liu ◽  
Rong-Zhen Yang ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Acid Catalyzed

Conversion of Glycerol to Lactic Acid Catalyzed by Different-Sized Cu2O Nanoparticles in NaOH Aqueous Solution

2017 ◽  
Vol 17 (1) ◽  
pp. 780-787 ◽  
Author(s):  
Lingqin Shen ◽  
Haixu Yin ◽  
Hengbo Yin ◽  
Si Liu ◽  
Aili Wang
Keyword(s):  
Aqueous Solution ◽  
Lactic Acid ◽  
Cu2o Nanoparticles ◽  
Acid Catalyzed

scholarly journals Hydrothermal conversion of high-concentrated glycerol to lactic acid catalyzed by bimetallic CuAux (x = 0.01–0.04) nanoparticles and their reaction kinetics

RSC Advances ◽  
2017 ◽  
Vol 7 (49) ◽  
pp. 30725-30739 ◽  
Author(s):  
Lingqin Shen ◽  
Xin Zhou ◽  
Aili Wang ◽  
Hengbo Yin ◽  
Haixu Yin ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Lactic Acid ◽  
Reaction Kinetics ◽  
Hydrothermal Conversion ◽  
Acid Catalyzed

Bimetallic CuAux nanoparticles with alloy trend effectively catalyzed high-concentrated glycerol to lactic acid in a NaOH aqueous solution.

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