Synthesis of high molecular weight poly(L-lactic acid) by TPPi chain-extending

Ji Xing Xie; Rong Jie Yang

Synthesis of high molecular weight poly(L-lactic acid) by TPPi chain-extending

Ji Xing Xie^*, Rong Jie Yang

^*Corresponding author for this work

School of Material Science and Engineering

Beijing Institute of Technology

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Abstract

The poly(L-lactic acid)(PLLA) was synthesized through melt polycondensation from L-lactic acid. The chain-extending reaction of PLLA with triphenyl phosphite (TPPi) was studied. After the chain-extending the PLLA which has a viscosity average molecular weight (M̄_η) over 18.6 × 10⁴ can be attained in the optimal reaction. The ¹³C-NMR and [ α]₂₅ prove that the PLLA's molecular structure is kept after the reaction. DSC and TGA results show that the final products are semicrystallizability and have good thermal stability.

Original language	English
Pages (from-to)	20-23
Number of pages	4
Journal	Gaofenzi Cailiao Kexue Yu Gongcheng/Polymeric Materials Science and Engineering
Volume	24
Issue number	1
Publication status	Published - Jan 2008

Keywords

Chain-extending
Melt polycondensation
Poly(L-lactic acid)
Triphenyl phosphate

Cite this

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title = "Synthesis of high molecular weight poly(L-lactic acid) by TPPi chain-extending",

abstract = "The poly(L-lactic acid)(PLLA) was synthesized through melt polycondensation from L-lactic acid. The chain-extending reaction of PLLA with triphenyl phosphite (TPPi) was studied. After the chain-extending the PLLA which has a viscosity average molecular weight ({\=M}η) over 18.6 × 104 can be attained in the optimal reaction. The 13C-NMR and [ α]25 prove that the PLLA's molecular structure is kept after the reaction. DSC and TGA results show that the final products are semicrystallizability and have good thermal stability.",

keywords = "Chain-extending, Melt polycondensation, Poly(L-lactic acid), Triphenyl phosphate",

author = "Xie, {Ji Xing} and Yang, {Rong Jie}",

year = "2008",

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AU - Xie, Ji Xing

AU - Yang, Rong Jie

PY - 2008/1

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N2 - The poly(L-lactic acid)(PLLA) was synthesized through melt polycondensation from L-lactic acid. The chain-extending reaction of PLLA with triphenyl phosphite (TPPi) was studied. After the chain-extending the PLLA which has a viscosity average molecular weight (M̄η) over 18.6 × 104 can be attained in the optimal reaction. The 13C-NMR and [ α]25 prove that the PLLA's molecular structure is kept after the reaction. DSC and TGA results show that the final products are semicrystallizability and have good thermal stability.

AB - The poly(L-lactic acid)(PLLA) was synthesized through melt polycondensation from L-lactic acid. The chain-extending reaction of PLLA with triphenyl phosphite (TPPi) was studied. After the chain-extending the PLLA which has a viscosity average molecular weight (M̄η) over 18.6 × 104 can be attained in the optimal reaction. The 13C-NMR and [ α]25 prove that the PLLA's molecular structure is kept after the reaction. DSC and TGA results show that the final products are semicrystallizability and have good thermal stability.

KW - Chain-extending

KW - Melt polycondensation

KW - Poly(L-lactic acid)

KW - Triphenyl phosphate

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JO - Gaofenzi Cailiao Kexue Yu Gongcheng/Polymeric Materials Science and Engineering

JF - Gaofenzi Cailiao Kexue Yu Gongcheng/Polymeric Materials Science and Engineering

IS - 1

ER -

Synthesis of high molecular weight poly(L-lactic acid) by TPPi chain-extending

Abstract

Keywords

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