Synthesis, characterization and surface properties of poly(lactic acid)-perfluoropolyether block copolymers

Akhilesh Singh; Amit K. Naskar; Dahlia Haynes; Michael J. Drews; Dennis W. Smith

doi:10.1002/pi.2982

Synthesis, characterization and surface properties of poly(lactic acid)-perfluoropolyether block copolymers

Akhilesh Singh, Amit K. Naskar, Dahlia Haynes, Michael J. Drews, Dennis W. Smith

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

20 Scopus citations

Abstract

Laboratory-scale synthesis and morphological and surface energy characterization of triblock A-B-A copolymers based on poly(lactic acid) (PLA; A segment) containing various block lengths of perfluoropolyether (PFPE; B segment) at 5 wt% PFPE content are reported. Incorporation of PFPE segments in PLA lowers significantly both the polar and dispersive components of total surface energy. Total surface energy is lowered from ca 35 to ca 17 mN m^-1 on copolymerization of PLA with 5 wt% PFPE. Thermal analysis data reveal that lower molecular weight PFPE segments lower significantly the glass transition, crystallization and melting temperatures of the PLA matrix. Although block length variation of the PFPE segment does not affect surface energies of copolymer films, smaller PFPE segments increase significantly the low-temperature modulus as observed from dynamic mechanical analysis.

Original language	English
Pages (from-to)	507-516
Number of pages	10
Journal	Polymer International
Volume	60
Issue number	3
DOIs	https://doi.org/10.1002/pi.2982
State	Published - Mar 2011

Keywords

Dynamic mechanical analysis
Perfluoropolyether
Polylactide
Surface energy
Triblock copolymer

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title = "Synthesis, characterization and surface properties of poly(lactic acid)-perfluoropolyether block copolymers",

abstract = "Laboratory-scale synthesis and morphological and surface energy characterization of triblock A-B-A copolymers based on poly(lactic acid) (PLA; A segment) containing various block lengths of perfluoropolyether (PFPE; B segment) at 5 wt% PFPE content are reported. Incorporation of PFPE segments in PLA lowers significantly both the polar and dispersive components of total surface energy. Total surface energy is lowered from ca 35 to ca 17 mN m-1 on copolymerization of PLA with 5 wt% PFPE. Thermal analysis data reveal that lower molecular weight PFPE segments lower significantly the glass transition, crystallization and melting temperatures of the PLA matrix. Although block length variation of the PFPE segment does not affect surface energies of copolymer films, smaller PFPE segments increase significantly the low-temperature modulus as observed from dynamic mechanical analysis.",

keywords = "Dynamic mechanical analysis, Perfluoropolyether, Polylactide, Surface energy, Triblock copolymer",

author = "Akhilesh Singh and Naskar, {Amit K.} and Dahlia Haynes and Drews, {Michael J.} and Smith, {Dennis W.}",

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T1 - Synthesis, characterization and surface properties of poly(lactic acid)-perfluoropolyether block copolymers

AU - Singh, Akhilesh

AU - Naskar, Amit K.

AU - Haynes, Dahlia

AU - Drews, Michael J.

AU - Smith, Dennis W.

PY - 2011/3

Y1 - 2011/3

N2 - Laboratory-scale synthesis and morphological and surface energy characterization of triblock A-B-A copolymers based on poly(lactic acid) (PLA; A segment) containing various block lengths of perfluoropolyether (PFPE; B segment) at 5 wt% PFPE content are reported. Incorporation of PFPE segments in PLA lowers significantly both the polar and dispersive components of total surface energy. Total surface energy is lowered from ca 35 to ca 17 mN m-1 on copolymerization of PLA with 5 wt% PFPE. Thermal analysis data reveal that lower molecular weight PFPE segments lower significantly the glass transition, crystallization and melting temperatures of the PLA matrix. Although block length variation of the PFPE segment does not affect surface energies of copolymer films, smaller PFPE segments increase significantly the low-temperature modulus as observed from dynamic mechanical analysis.

AB - Laboratory-scale synthesis and morphological and surface energy characterization of triblock A-B-A copolymers based on poly(lactic acid) (PLA; A segment) containing various block lengths of perfluoropolyether (PFPE; B segment) at 5 wt% PFPE content are reported. Incorporation of PFPE segments in PLA lowers significantly both the polar and dispersive components of total surface energy. Total surface energy is lowered from ca 35 to ca 17 mN m-1 on copolymerization of PLA with 5 wt% PFPE. Thermal analysis data reveal that lower molecular weight PFPE segments lower significantly the glass transition, crystallization and melting temperatures of the PLA matrix. Although block length variation of the PFPE segment does not affect surface energies of copolymer films, smaller PFPE segments increase significantly the low-temperature modulus as observed from dynamic mechanical analysis.

KW - Dynamic mechanical analysis

KW - Perfluoropolyether

KW - Polylactide

KW - Surface energy

KW - Triblock copolymer

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JO - Polymer International

JF - Polymer International

IS - 3

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Synthesis, characterization and surface properties of poly(lactic acid)-perfluoropolyether block copolymers

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Keywords

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