Formation of extended ionomeric network by bulk polymerization of L,D-lactide with layered-double-hydroxide

Edward D. Mccarthy; Mauro Zammarano; Douglas M. Fox; Ryan C. Nieuwendaal; Yeon S. Kim; Paul H. Maupin; Paul C. Trulove; Jeffrey W. Gilman

doi:http://dx.doi.org/10.1016/j.polymer.2012.11.037

Formation of extended ionomeric network by bulk polymerization of L,D-lactide with layered-double-hydroxide

Edward D. Mccarthy, Mauro Zammarano, Douglas M. Fox, Ryan C. Nieuwendaal, Yeon S. Kim, Paul H. Maupin, Paul C. Trulove, Jeffrey W. Gilman

School of Engineering

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

Abstract / Description of output

We report the formation of an ionomeric network in a poly(L,D-lactide) hybrid nanocomposite, (PLDLAHYB) during in-situ melt polymerization of L,D-lactide in the presence of magnesium/aluminum layered double-hydroxide (LDH) without added catalyst. The effect of LDH mass loading and reaction time on molecular mass and yield of soluble poly(L,D-lactide) (PLDLA-SOL) present in the hybrid was investigated for a better understanding of the conflicting roles of LDH in polymerization and degradation of PLDLA-SOL. High molecular mass PLDLA-SOL is obtained through initiation of polymerization by LDH. However an additional insoluble organiceinorganic fraction, INSOL, is also observed within the product when PLDLA-SOL is extracted using methylene chloride as solvent. It is proposed that INSOL is an ionomeric network comprising hydrogen-bonded, or otherwise coordinated, lactic acid monomer salts of magnesium, together with PLDLA in a 24%e76% mass ratio.

Original language	English
Article number	0032-3861
Pages (from-to)	90-101
Number of pages	21
Journal	Polymer
Volume	54
Issue number	1
Early online date	22 Nov 2012
DOIs	https://doi.org/10.1016/j.polymer.2012.11.037 https://doi.org/10.1016/j.polymer.2012.11.037
Publication status	Published - 8 Jan 2013

Keywords / Materials (for Non-textual outputs)

polylactic acid
LACTIDE POLYMERIZATION
polymerisation
ring opening polymerisation
layered double hydroxide
ionomer
network formation
SCAFFOLD

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McCarthy, Gilman, Accepted ManuscriptAccepted author manuscript, 2.28 MBLicence: Unspecified

https://linkinghub.elsevier.com/retrieve/pii/S0032386112009871

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Mccarthy, E. D., Zammarano, M., Fox, D. M., Nieuwendaal, R. C., Kim, Y. S., Maupin, P. H., Trulove, P. C., & Gilman, J. W. (2013). Formation of extended ionomeric network by bulk polymerization of L,D-lactide with layered-double-hydroxide. Polymer, 54(1), 90-101. Article 0032-3861. Advance online publication. https://doi.org/10.1016/j.polymer.2012.11.037, https://doi.org/10.1016/j.polymer.2012.11.037

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title = "Formation of extended ionomeric network by bulk polymerization of L,D-lactide with layered-double-hydroxide",

abstract = "We report the formation of an ionomeric network in a poly(L,D-lactide) hybrid nanocomposite, (PLDLAHYB) during in-situ melt polymerization of L,D-lactide in the presence of magnesium/aluminum layered double-hydroxide (LDH) without added catalyst. The effect of LDH mass loading and reaction time on molecular mass and yield of soluble poly(L,D-lactide) (PLDLA-SOL) present in the hybrid was investigated for a better understanding of the conflicting roles of LDH in polymerization and degradation of PLDLA-SOL. High molecular mass PLDLA-SOL is obtained through initiation of polymerization by LDH. However an additional insoluble organiceinorganic fraction, INSOL, is also observed within the product when PLDLA-SOL is extracted using methylene chloride as solvent. It is proposed that INSOL is an ionomeric network comprising hydrogen-bonded, or otherwise coordinated, lactic acid monomer salts of magnesium, together with PLDLA in a 24%e76% mass ratio.",

keywords = "polylactic acid, LACTIDE POLYMERIZATION, polymerisation, ring opening polymerisation, layered double hydroxide, ionomer, network formation, SCAFFOLD",

author = "Mccarthy, {Edward D.} and Mauro Zammarano and Fox, {Douglas M.} and Nieuwendaal, {Ryan C.} and Kim, {Yeon S.} and Maupin, {Paul H.} and Trulove, {Paul C.} and Gilman, {Jeffrey W.}",

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doi = "http://dx.doi.org/10.1016/j.polymer.2012.11.037",

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T1 - Formation of extended ionomeric network by bulk polymerization of L,D-lactide with layered-double-hydroxide

AU - Mccarthy, Edward D.

AU - Zammarano, Mauro

AU - Fox, Douglas M.

AU - Nieuwendaal, Ryan C.

AU - Kim, Yeon S.

AU - Maupin, Paul H.

AU - Trulove, Paul C.

AU - Gilman, Jeffrey W.

PY - 2013/1/8

Y1 - 2013/1/8

N2 - We report the formation of an ionomeric network in a poly(L,D-lactide) hybrid nanocomposite, (PLDLAHYB) during in-situ melt polymerization of L,D-lactide in the presence of magnesium/aluminum layered double-hydroxide (LDH) without added catalyst. The effect of LDH mass loading and reaction time on molecular mass and yield of soluble poly(L,D-lactide) (PLDLA-SOL) present in the hybrid was investigated for a better understanding of the conflicting roles of LDH in polymerization and degradation of PLDLA-SOL. High molecular mass PLDLA-SOL is obtained through initiation of polymerization by LDH. However an additional insoluble organiceinorganic fraction, INSOL, is also observed within the product when PLDLA-SOL is extracted using methylene chloride as solvent. It is proposed that INSOL is an ionomeric network comprising hydrogen-bonded, or otherwise coordinated, lactic acid monomer salts of magnesium, together with PLDLA in a 24%e76% mass ratio.

AB - We report the formation of an ionomeric network in a poly(L,D-lactide) hybrid nanocomposite, (PLDLAHYB) during in-situ melt polymerization of L,D-lactide in the presence of magnesium/aluminum layered double-hydroxide (LDH) without added catalyst. The effect of LDH mass loading and reaction time on molecular mass and yield of soluble poly(L,D-lactide) (PLDLA-SOL) present in the hybrid was investigated for a better understanding of the conflicting roles of LDH in polymerization and degradation of PLDLA-SOL. High molecular mass PLDLA-SOL is obtained through initiation of polymerization by LDH. However an additional insoluble organiceinorganic fraction, INSOL, is also observed within the product when PLDLA-SOL is extracted using methylene chloride as solvent. It is proposed that INSOL is an ionomeric network comprising hydrogen-bonded, or otherwise coordinated, lactic acid monomer salts of magnesium, together with PLDLA in a 24%e76% mass ratio.

KW - polylactic acid

KW - LACTIDE POLYMERIZATION

KW - polymerisation

KW - ring opening polymerisation

KW - layered double hydroxide

KW - ionomer

KW - network formation

KW - SCAFFOLD

U2 - http://dx.doi.org/10.1016/j.polymer.2012.11.037

DO - http://dx.doi.org/10.1016/j.polymer.2012.11.037

M3 - Article

SN - 0032-3861

VL - 54

SP - 90

EP - 101

JO - Polymer

JF - Polymer

IS - 1

M1 - 0032-3861

ER -

Formation of extended ionomeric network by bulk polymerization of L,D-lactide with layered-double-hydroxide

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Keywords / Materials (for Non-textual outputs)

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