Polycarbonate modified with crystallisable bis-ester tetra-amide units in a reaction extrusion process

W.C.J. Zuiderduin, R.J. Gaymans

Research output: Contribution to journalArticleAcademicpeer-review

8 Citations (Scopus)

Abstract

Dry blends of polycarbonate (PC) and a bis-ester tetra-amide were extruded at 305 °C with a mini twin screw extruder. The bis-ester tetra-amide diamide (T6T6T-dimethyl) was composed of two and a half repeat units of Nylon 6,T and had methyl ester endgroups. During the extrusion, a trans-esterification reaction took place between the carbonate groups of PC and the terephthalic ester groups of T6T6T-dimethyl. The concentration of the bis-ester tetra-amide units was varied from 0 to 15 wt%. The PC-T6T6T copolymers were analysed by solution viscometry, infra-red (IR) spectroscopy, differential scanning calorimetry (DSC) and dynamic mechanical analysis (DMA). The solvent resistance was determined in chloroform. The trans-esterification reaction in the reaction extrusion process progressed to a large extent. The molecular weights of the reaction extrusion copolymers decreased with increasing bis-ester tetra-amide content due to the trans-reactions. The T6T6T segments in the PC-T6T6T copolymers crystallised during the injection moulding process despite their small segment size and their low contents. Even the crystallinity of the T6T6T units was high. As a result of the presence of this T6T6T crystalline phase, the flow temperature of the copolymers increased as did the modulus at 180 °C. Also the solvent resistance was found to improve
Original languageUndefined
Pages (from-to)527-534
JournalReactive & functional polymers
Volume68
Issue number2
DOIs
Publication statusPublished - 2008

Keywords

  • METIS-254520
  • Solvent resistance
  • Tetra-amide
  • Reaction extrusion
  • Polycarbonate
  • IR-69434

Cite this

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title = "Polycarbonate modified with crystallisable bis-ester tetra-amide units in a reaction extrusion process",
abstract = "Dry blends of polycarbonate (PC) and a bis-ester tetra-amide were extruded at 305 °C with a mini twin screw extruder. The bis-ester tetra-amide diamide (T6T6T-dimethyl) was composed of two and a half repeat units of Nylon 6,T and had methyl ester endgroups. During the extrusion, a trans-esterification reaction took place between the carbonate groups of PC and the terephthalic ester groups of T6T6T-dimethyl. The concentration of the bis-ester tetra-amide units was varied from 0 to 15 wt{\%}. The PC-T6T6T copolymers were analysed by solution viscometry, infra-red (IR) spectroscopy, differential scanning calorimetry (DSC) and dynamic mechanical analysis (DMA). The solvent resistance was determined in chloroform. The trans-esterification reaction in the reaction extrusion process progressed to a large extent. The molecular weights of the reaction extrusion copolymers decreased with increasing bis-ester tetra-amide content due to the trans-reactions. The T6T6T segments in the PC-T6T6T copolymers crystallised during the injection moulding process despite their small segment size and their low contents. Even the crystallinity of the T6T6T units was high. As a result of the presence of this T6T6T crystalline phase, the flow temperature of the copolymers increased as did the modulus at 180 °C. Also the solvent resistance was found to improve",
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author = "W.C.J. Zuiderduin and R.J. Gaymans",
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journal = "Reactive & functional polymers",
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Polycarbonate modified with crystallisable bis-ester tetra-amide units in a reaction extrusion process. / Zuiderduin, W.C.J.; Gaymans, R.J.

In: Reactive & functional polymers, Vol. 68, No. 2, 2008, p. 527-534.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Polycarbonate modified with crystallisable bis-ester tetra-amide units in a reaction extrusion process

AU - Zuiderduin, W.C.J.

AU - Gaymans, R.J.

PY - 2008

Y1 - 2008

N2 - Dry blends of polycarbonate (PC) and a bis-ester tetra-amide were extruded at 305 °C with a mini twin screw extruder. The bis-ester tetra-amide diamide (T6T6T-dimethyl) was composed of two and a half repeat units of Nylon 6,T and had methyl ester endgroups. During the extrusion, a trans-esterification reaction took place between the carbonate groups of PC and the terephthalic ester groups of T6T6T-dimethyl. The concentration of the bis-ester tetra-amide units was varied from 0 to 15 wt%. The PC-T6T6T copolymers were analysed by solution viscometry, infra-red (IR) spectroscopy, differential scanning calorimetry (DSC) and dynamic mechanical analysis (DMA). The solvent resistance was determined in chloroform. The trans-esterification reaction in the reaction extrusion process progressed to a large extent. The molecular weights of the reaction extrusion copolymers decreased with increasing bis-ester tetra-amide content due to the trans-reactions. The T6T6T segments in the PC-T6T6T copolymers crystallised during the injection moulding process despite their small segment size and their low contents. Even the crystallinity of the T6T6T units was high. As a result of the presence of this T6T6T crystalline phase, the flow temperature of the copolymers increased as did the modulus at 180 °C. Also the solvent resistance was found to improve

AB - Dry blends of polycarbonate (PC) and a bis-ester tetra-amide were extruded at 305 °C with a mini twin screw extruder. The bis-ester tetra-amide diamide (T6T6T-dimethyl) was composed of two and a half repeat units of Nylon 6,T and had methyl ester endgroups. During the extrusion, a trans-esterification reaction took place between the carbonate groups of PC and the terephthalic ester groups of T6T6T-dimethyl. The concentration of the bis-ester tetra-amide units was varied from 0 to 15 wt%. The PC-T6T6T copolymers were analysed by solution viscometry, infra-red (IR) spectroscopy, differential scanning calorimetry (DSC) and dynamic mechanical analysis (DMA). The solvent resistance was determined in chloroform. The trans-esterification reaction in the reaction extrusion process progressed to a large extent. The molecular weights of the reaction extrusion copolymers decreased with increasing bis-ester tetra-amide content due to the trans-reactions. The T6T6T segments in the PC-T6T6T copolymers crystallised during the injection moulding process despite their small segment size and their low contents. Even the crystallinity of the T6T6T units was high. As a result of the presence of this T6T6T crystalline phase, the flow temperature of the copolymers increased as did the modulus at 180 °C. Also the solvent resistance was found to improve

KW - METIS-254520

KW - Solvent resistance

KW - Tetra-amide

KW - Reaction extrusion

KW - Polycarbonate

KW - IR-69434

U2 - 10.1016/j.reactfunctpolym.2007.10.023

DO - 10.1016/j.reactfunctpolym.2007.10.023

M3 - Article

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SP - 527

EP - 534

JO - Reactive & functional polymers

JF - Reactive & functional polymers

SN - 1381-5148

IS - 2

ER -