Synthesis and Characterization of Poly(ethylene glycol) Methyl Ether Endcapped Poly(ethylene terephthalate)

Qin Lin, Serkan Unal, Ann R. Fornof, Yuping Wei, Huimin Li, R. Scott Armentrout, Timothy Edward Long

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Linear and branched poly(ethylene terephthalate) (PET) copolymers with poly(ethylene glycol) (PEG) methyl ether (700 or 2000 g/mol) end groups were synthesized using conventional melt polymerization. DSC analysis demonstrated that low levels of PEG end groups accelerated PET crystallization. The incorporated PEG end groups also decreased the crystallization temperature of PET dramatically, and copolymers with a high content of PEG (>17.6 wt%) were able to crystallize at room temperature. Rheological analysis demonstrated that the presence of PEG end groups effectively decreased the melt viscosities and facilitated melt processing. XPS and ATR-FTIR revealed that the PEG end groups tended to aggregate on the surface, and the surface of compression molded films containing 34.0 wt% PEG were PEG rich (85 wt% PEG). PEG end-capped PET (34.0 wt% PEG) and PET films were immersed into a fibrinogen solution (0.7 mg/mL BSA) for 72 h to investigate the propensity for protein adhesion. XPS demonstrated that the concentration of nitrogen (1.05 %) on the surface of PEG endcapped PET film was statistically lower than PET (7.67%). SEM analysis was consistent with XPS results, and revealed the presence of adsorbed protein on the surface of PET films.

Original languageEnglish
Pages (from-to)163-172
Number of pages10
JournalMacromolecular Symposia
Volume199
DOIs
Publication statusPublished - 2003 Sep 1
Externally publishedYes

Fingerprint

Methyl Ethers
Polyethylene Terephthalates
polyethylene terephthalate
Polyethylene terephthalates
Polyethylene glycols
glycols
Ethers
ethers
ethylene
synthesis
copolymers
crystallization
proteins
fibrinogen
X ray photoelectron spectroscopy
adhesion
Crystallization
polymerization
viscosity
nitrogen

Keywords

  • Biocompatibility
  • Crystallization rate
  • Melt polymerization
  • Poly(ethylene glycol) (PEG)
  • Poly(ethylene terephthalate) (PET)

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Polymers and Plastics
  • Organic Chemistry
  • Materials Chemistry

Cite this

Synthesis and Characterization of Poly(ethylene glycol) Methyl Ether Endcapped Poly(ethylene terephthalate). / Lin, Qin; Unal, Serkan; Fornof, Ann R.; Wei, Yuping; Li, Huimin; Armentrout, R. Scott; Long, Timothy Edward.

In: Macromolecular Symposia, Vol. 199, 01.09.2003, p. 163-172.

Research output: Contribution to journalArticle

Lin, Qin ; Unal, Serkan ; Fornof, Ann R. ; Wei, Yuping ; Li, Huimin ; Armentrout, R. Scott ; Long, Timothy Edward. / Synthesis and Characterization of Poly(ethylene glycol) Methyl Ether Endcapped Poly(ethylene terephthalate). In: Macromolecular Symposia. 2003 ; Vol. 199. pp. 163-172.
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