Influence of polydispersity of crystallizable segments on the properties of segmented block copolymers

G.J.E. Biemond, Jan Feijen, R.J. Gaymans

Research output: Contribution to journalArticleAcademicpeer-review

18 Citations (Scopus)

Abstract

Poly(ether-ester-amide)s (PEEAs) based on poly(tetramethylene oxide) and tetra-amide segments were synthesized by a solution/melt polymerization. The tetra-amide segments (T6A6T) were based on adipic acid (A), terephthalic acid (T), and hexamethylene diamine (6), and were synthesized prior to the polymerization. Monodisperse tetra-amide segments, i.e. T6A6T, as well as polydisperse segments, consisting of a mixture of uniform segments of diamide (T6T), tetra-amide (T6A6T), and hexa-amide (T6A6A6T), were utilized in the preparation of the PEEAs. In this way, a polydispersity index ranging from 1.0 to 1.09 could be obtained. In addition, a random copolymer, synthesized by a one-pot polymerization, was also studied and the copolymer had a polydispersity of 1.2. The low polydispersity of the one-pot synthesis amide segments was mainly due to the uneven reactivity of the terephthalic ester groups. The properties of copolymers were studied by DSC, FTIR, DMTA, compression set, and tensile set measurements. When the polydispersity of the amide segments was increased, the copolymers displayed a slower crystallization, a lower final crystallinity, a broader melting transition, a decreased storage modulus at room temperature, as well as a decreased yield strength and inferior elastic properties
Original languageUndefined
Pages (from-to)1389-1400
JournalPolymer engineering and science
Volume48
Issue number7
DOIs
Publication statusPublished - 2008

Keywords

  • METIS-254521
  • IR-68970

Cite this

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title = "Influence of polydispersity of crystallizable segments on the properties of segmented block copolymers",
abstract = "Poly(ether-ester-amide)s (PEEAs) based on poly(tetramethylene oxide) and tetra-amide segments were synthesized by a solution/melt polymerization. The tetra-amide segments (T6A6T) were based on adipic acid (A), terephthalic acid (T), and hexamethylene diamine (6), and were synthesized prior to the polymerization. Monodisperse tetra-amide segments, i.e. T6A6T, as well as polydisperse segments, consisting of a mixture of uniform segments of diamide (T6T), tetra-amide (T6A6T), and hexa-amide (T6A6A6T), were utilized in the preparation of the PEEAs. In this way, a polydispersity index ranging from 1.0 to 1.09 could be obtained. In addition, a random copolymer, synthesized by a one-pot polymerization, was also studied and the copolymer had a polydispersity of 1.2. The low polydispersity of the one-pot synthesis amide segments was mainly due to the uneven reactivity of the terephthalic ester groups. The properties of copolymers were studied by DSC, FTIR, DMTA, compression set, and tensile set measurements. When the polydispersity of the amide segments was increased, the copolymers displayed a slower crystallization, a lower final crystallinity, a broader melting transition, a decreased storage modulus at room temperature, as well as a decreased yield strength and inferior elastic properties",
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journal = "Polymer engineering and science",
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Influence of polydispersity of crystallizable segments on the properties of segmented block copolymers. / Biemond, G.J.E.; Feijen, Jan; Gaymans, R.J.

In: Polymer engineering and science, Vol. 48, No. 7, 2008, p. 1389-1400.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Influence of polydispersity of crystallizable segments on the properties of segmented block copolymers

AU - Biemond, G.J.E.

AU - Feijen, Jan

AU - Gaymans, R.J.

PY - 2008

Y1 - 2008

N2 - Poly(ether-ester-amide)s (PEEAs) based on poly(tetramethylene oxide) and tetra-amide segments were synthesized by a solution/melt polymerization. The tetra-amide segments (T6A6T) were based on adipic acid (A), terephthalic acid (T), and hexamethylene diamine (6), and were synthesized prior to the polymerization. Monodisperse tetra-amide segments, i.e. T6A6T, as well as polydisperse segments, consisting of a mixture of uniform segments of diamide (T6T), tetra-amide (T6A6T), and hexa-amide (T6A6A6T), were utilized in the preparation of the PEEAs. In this way, a polydispersity index ranging from 1.0 to 1.09 could be obtained. In addition, a random copolymer, synthesized by a one-pot polymerization, was also studied and the copolymer had a polydispersity of 1.2. The low polydispersity of the one-pot synthesis amide segments was mainly due to the uneven reactivity of the terephthalic ester groups. The properties of copolymers were studied by DSC, FTIR, DMTA, compression set, and tensile set measurements. When the polydispersity of the amide segments was increased, the copolymers displayed a slower crystallization, a lower final crystallinity, a broader melting transition, a decreased storage modulus at room temperature, as well as a decreased yield strength and inferior elastic properties

AB - Poly(ether-ester-amide)s (PEEAs) based on poly(tetramethylene oxide) and tetra-amide segments were synthesized by a solution/melt polymerization. The tetra-amide segments (T6A6T) were based on adipic acid (A), terephthalic acid (T), and hexamethylene diamine (6), and were synthesized prior to the polymerization. Monodisperse tetra-amide segments, i.e. T6A6T, as well as polydisperse segments, consisting of a mixture of uniform segments of diamide (T6T), tetra-amide (T6A6T), and hexa-amide (T6A6A6T), were utilized in the preparation of the PEEAs. In this way, a polydispersity index ranging from 1.0 to 1.09 could be obtained. In addition, a random copolymer, synthesized by a one-pot polymerization, was also studied and the copolymer had a polydispersity of 1.2. The low polydispersity of the one-pot synthesis amide segments was mainly due to the uneven reactivity of the terephthalic ester groups. The properties of copolymers were studied by DSC, FTIR, DMTA, compression set, and tensile set measurements. When the polydispersity of the amide segments was increased, the copolymers displayed a slower crystallization, a lower final crystallinity, a broader melting transition, a decreased storage modulus at room temperature, as well as a decreased yield strength and inferior elastic properties

KW - METIS-254521

KW - IR-68970

U2 - 10.1002/pen.21115

DO - 10.1002/pen.21115

M3 - Article

VL - 48

SP - 1389

EP - 1400

JO - Polymer engineering and science

JF - Polymer engineering and science

SN - 0032-3888

IS - 7

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