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

^*此作品的通讯作者

材料学院

Beijing Institute of Technology

科研成果: 期刊稿件 › 文章 › 同行评审

2 引用（Scopus）

摘要

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.

源语言	英语
页（从-至）	20-23
页数	4
期刊	Gaofenzi Cailiao Kexue Yu Gongcheng/Polymeric Materials Science and Engineering
卷	24
期	1
出版状态	已出版 - 1月 2008

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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",

month = jan,

language = "English",

volume = "24",

pages = "20--23",

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T1 - Synthesis of high molecular weight poly(L-lactic acid) by TPPi chain-extending

AU - Xie, Ji Xing

AU - Yang, Rong Jie

PY - 2008/1

Y1 - 2008/1

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

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