Synthesis and characterization of triblock copolymer PLA-b-PBT-b-PLA and its effect on the crystallization of PLA

Jian Zhou; Zhiqiang Jiang; Zongbao Wang; Jianqiang Zhang; Jun Li; Ya Li; Junwu Zhang; Peng Chen; Qun Gu

doi:10.1039/c3ra42096e

Synthesis and characterization of triblock copolymer PLA-b-PBT-b-PLA and its effect on the crystallization of PLA

Jian Zhou
, Zhiqiang Jiang
, Zongbao Wang
, Jianqiang Zhang
, Jun Li
, Ya Li
, Junwu Zhang
, Peng Chen^*
, Qun Gu

^*Corresponding author for this work

CAS - Ningbo Institute of Material Technology and Engineering
University of Edinburgh
Lanzhou University of Technology
School of Chemistry and Chemical Engineering, Harbin Institute of Technology

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

27 Scopus citations

Abstract

A series of poly(L-lactide)-b-poly(butylene terephthalate)- b-poly(L-lactide) (PLA-b-PBT-b-PLA) triblock copolymers were synthesized via ring-opening polymerization of L-lactide with hydroxyl-functionalized poly(butylene terephthalate) (HOPBT) as macroinitiator and stanneous 2-ethylhexanoate (Sn(Oct)₂) as the catalyst in 1,1,2,2- tetrachloroethane (TCE). The conversion of L-lactide was high and the PLA block in the copolymers showed high optical purity. Chemical structure and physical properties of the triblock copolymers were studied using NMR, GPC, DSC, and WAXD. The block structure of the copolymers was confirmed using NMR, and each block formed the same crystal type as the respective homopolymer, i.e., PLA or PBT as revealed by DSC and WAXD. The copolymer, even at a very low content (5 wt%), showed an unexpected favoring effect on the crystallization of PLA, which made it a potential polymeric nucleating agent for PLA.

Original language	English
Pages (from-to)	18464-18473
Number of pages	10
Journal	RSC Advances
Volume	3
Issue number	40
DOIs	https://doi.org/10.1039/c3ra42096e
State	Published - 28 Oct 2013
Externally published	Yes

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title = "Synthesis and characterization of triblock copolymer PLA-b-PBT-b-PLA and its effect on the crystallization of PLA",

abstract = "A series of poly(L-lactide)-b-poly(butylene terephthalate)- b-poly(L-lactide) (PLA-b-PBT-b-PLA) triblock copolymers were synthesized via ring-opening polymerization of L-lactide with hydroxyl-functionalized poly(butylene terephthalate) (HOPBT) as macroinitiator and stanneous 2-ethylhexanoate (Sn(Oct)2) as the catalyst in 1,1,2,2- tetrachloroethane (TCE). The conversion of L-lactide was high and the PLA block in the copolymers showed high optical purity. Chemical structure and physical properties of the triblock copolymers were studied using NMR, GPC, DSC, and WAXD. The block structure of the copolymers was confirmed using NMR, and each block formed the same crystal type as the respective homopolymer, i.e., PLA or PBT as revealed by DSC and WAXD. The copolymer, even at a very low content (5 wt\%), showed an unexpected favoring effect on the crystallization of PLA, which made it a potential polymeric nucleating agent for PLA.",

author = "Jian Zhou and Zhiqiang Jiang and Zongbao Wang and Jianqiang Zhang and Jun Li and Ya Li and Junwu Zhang and Peng Chen and Qun Gu",

year = "2013",

month = oct,

day = "28",

doi = "10.1039/c3ra42096e",

language = "英语",

volume = "3",

pages = "18464--18473",

journal = "RSC Advances",

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TY - JOUR

T1 - Synthesis and characterization of triblock copolymer PLA-b-PBT-b-PLA and its effect on the crystallization of PLA

AU - Zhou, Jian

AU - Jiang, Zhiqiang

AU - Wang, Zongbao

AU - Zhang, Jianqiang

AU - Li, Jun

AU - Li, Ya

AU - Zhang, Junwu

AU - Chen, Peng

AU - Gu, Qun

PY - 2013/10/28

Y1 - 2013/10/28

N2 - A series of poly(L-lactide)-b-poly(butylene terephthalate)- b-poly(L-lactide) (PLA-b-PBT-b-PLA) triblock copolymers were synthesized via ring-opening polymerization of L-lactide with hydroxyl-functionalized poly(butylene terephthalate) (HOPBT) as macroinitiator and stanneous 2-ethylhexanoate (Sn(Oct)2) as the catalyst in 1,1,2,2- tetrachloroethane (TCE). The conversion of L-lactide was high and the PLA block in the copolymers showed high optical purity. Chemical structure and physical properties of the triblock copolymers were studied using NMR, GPC, DSC, and WAXD. The block structure of the copolymers was confirmed using NMR, and each block formed the same crystal type as the respective homopolymer, i.e., PLA or PBT as revealed by DSC and WAXD. The copolymer, even at a very low content (5 wt%), showed an unexpected favoring effect on the crystallization of PLA, which made it a potential polymeric nucleating agent for PLA.

AB - A series of poly(L-lactide)-b-poly(butylene terephthalate)- b-poly(L-lactide) (PLA-b-PBT-b-PLA) triblock copolymers were synthesized via ring-opening polymerization of L-lactide with hydroxyl-functionalized poly(butylene terephthalate) (HOPBT) as macroinitiator and stanneous 2-ethylhexanoate (Sn(Oct)2) as the catalyst in 1,1,2,2- tetrachloroethane (TCE). The conversion of L-lactide was high and the PLA block in the copolymers showed high optical purity. Chemical structure and physical properties of the triblock copolymers were studied using NMR, GPC, DSC, and WAXD. The block structure of the copolymers was confirmed using NMR, and each block formed the same crystal type as the respective homopolymer, i.e., PLA or PBT as revealed by DSC and WAXD. The copolymer, even at a very low content (5 wt%), showed an unexpected favoring effect on the crystallization of PLA, which made it a potential polymeric nucleating agent for PLA.

UR - https://www.scopus.com/pages/publications/84884882369

U2 - 10.1039/c3ra42096e

DO - 10.1039/c3ra42096e

M3 - 文章

AN - SCOPUS:84884882369

SN - 2046-2069

VL - 3

SP - 18464

EP - 18473

JO - RSC Advances

JF - RSC Advances

IS - 40

ER -

Synthesis and characterization of triblock copolymer PLA-b-PBT-b-PLA and its effect on the crystallization of PLA

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