Stereocomplexation of poly (l -lactide) and random copolymer poly (d -lactide- co -ε-caprolactone) to enhance melt stability

Purba Purnama, Youngmee Jung, Soo Hyun Kim

Research output: Contribution to journalArticle

44 Citations (Scopus)

Abstract

An experiment was conducted to demonstrate that small caprolactone content in the poly(D-lactide-co-ε-caprolactone) PDLCL can enhanced the melt stability of stereocomplex polylactide (s-PLA). PDLCL copolymers with small content of CL were synthesized by ring-opening polymerization of D-lactide and CL in the presence of stannous octoate and 1-dodecanol. The structure of PDLCL was analyzed by 1H NMR which showed methane lactide signals at 5.14 ppm and methylene CL signals at 4.1 ppm. The melting point of PDLCL copolymers were between the melting points of PDLA and PCL due to the randomization of PDLA and PCL fragments together. The melt stability of s-PLA related to the reassemble of the enantiomeric polylactide chain. The degree of s-PLA starts to decrease at s-PLA5 and s-PLA10 which is shown by small homopolymer peak. The s-PLA copolymer has better melt stability compared to the linear s-PLA.

Original languageEnglish
Pages (from-to)4012-4014
Number of pages3
JournalMacromolecules
Volume45
Issue number9
DOIs
Publication statusPublished - 2012 May 8
Externally publishedYes

Fingerprint

Copolymers
Melting point
Ring opening polymerization
Homopolymerization
Methane
Dodecanol
Nuclear magnetic resonance
caprolactone
dilactide
poly(lactide)
Experiments

ASJC Scopus subject areas

  • Organic Chemistry
  • Materials Chemistry
  • Polymers and Plastics
  • Inorganic Chemistry

Cite this

Stereocomplexation of poly (l -lactide) and random copolymer poly (d -lactide- co -ε-caprolactone) to enhance melt stability. / Purnama, Purba; Jung, Youngmee; Kim, Soo Hyun.

In: Macromolecules, Vol. 45, No. 9, 08.05.2012, p. 4012-4014.

Research output: Contribution to journalArticle

Purnama, Purba ; Jung, Youngmee ; Kim, Soo Hyun. / Stereocomplexation of poly (l -lactide) and random copolymer poly (d -lactide- co -ε-caprolactone) to enhance melt stability. In: Macromolecules. 2012 ; Vol. 45, No. 9. pp. 4012-4014.
@article{ef7aa103c63e41f5bce185990b17b407,
title = "Stereocomplexation of poly (l -lactide) and random copolymer poly (d -lactide- co -ε-caprolactone) to enhance melt stability",
abstract = "An experiment was conducted to demonstrate that small caprolactone content in the poly(D-lactide-co-ε-caprolactone) PDLCL can enhanced the melt stability of stereocomplex polylactide (s-PLA). PDLCL copolymers with small content of CL were synthesized by ring-opening polymerization of D-lactide and CL in the presence of stannous octoate and 1-dodecanol. The structure of PDLCL was analyzed by 1H NMR which showed methane lactide signals at 5.14 ppm and methylene CL signals at 4.1 ppm. The melting point of PDLCL copolymers were between the melting points of PDLA and PCL due to the randomization of PDLA and PCL fragments together. The melt stability of s-PLA related to the reassemble of the enantiomeric polylactide chain. The degree of s-PLA starts to decrease at s-PLA5 and s-PLA10 which is shown by small homopolymer peak. The s-PLA copolymer has better melt stability compared to the linear s-PLA.",
author = "Purba Purnama and Youngmee Jung and Kim, {Soo Hyun}",
year = "2012",
month = "5",
day = "8",
doi = "10.1021/ma202814c",
language = "English",
volume = "45",
pages = "4012--4014",
journal = "Macromolecules",
issn = "0024-9297",
publisher = "American Chemical Society",
number = "9",

}

TY - JOUR

T1 - Stereocomplexation of poly (l -lactide) and random copolymer poly (d -lactide- co -ε-caprolactone) to enhance melt stability

AU - Purnama, Purba

AU - Jung, Youngmee

AU - Kim, Soo Hyun

PY - 2012/5/8

Y1 - 2012/5/8

N2 - An experiment was conducted to demonstrate that small caprolactone content in the poly(D-lactide-co-ε-caprolactone) PDLCL can enhanced the melt stability of stereocomplex polylactide (s-PLA). PDLCL copolymers with small content of CL were synthesized by ring-opening polymerization of D-lactide and CL in the presence of stannous octoate and 1-dodecanol. The structure of PDLCL was analyzed by 1H NMR which showed methane lactide signals at 5.14 ppm and methylene CL signals at 4.1 ppm. The melting point of PDLCL copolymers were between the melting points of PDLA and PCL due to the randomization of PDLA and PCL fragments together. The melt stability of s-PLA related to the reassemble of the enantiomeric polylactide chain. The degree of s-PLA starts to decrease at s-PLA5 and s-PLA10 which is shown by small homopolymer peak. The s-PLA copolymer has better melt stability compared to the linear s-PLA.

AB - An experiment was conducted to demonstrate that small caprolactone content in the poly(D-lactide-co-ε-caprolactone) PDLCL can enhanced the melt stability of stereocomplex polylactide (s-PLA). PDLCL copolymers with small content of CL were synthesized by ring-opening polymerization of D-lactide and CL in the presence of stannous octoate and 1-dodecanol. The structure of PDLCL was analyzed by 1H NMR which showed methane lactide signals at 5.14 ppm and methylene CL signals at 4.1 ppm. The melting point of PDLCL copolymers were between the melting points of PDLA and PCL due to the randomization of PDLA and PCL fragments together. The melt stability of s-PLA related to the reassemble of the enantiomeric polylactide chain. The degree of s-PLA starts to decrease at s-PLA5 and s-PLA10 which is shown by small homopolymer peak. The s-PLA copolymer has better melt stability compared to the linear s-PLA.

UR - http://www.scopus.com/inward/record.url?scp=84861124188&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84861124188&partnerID=8YFLogxK

U2 - 10.1021/ma202814c

DO - 10.1021/ma202814c

M3 - Article

AN - SCOPUS:84861124188

VL - 45

SP - 4012

EP - 4014

JO - Macromolecules

JF - Macromolecules

SN - 0024-9297

IS - 9

ER -