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*


研究成果: Article査読

10 被引用数 (Scopus)


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.

ジャーナルMacromolecular Symposia
出版ステータスPublished - 2003 9月 1

ASJC Scopus subject areas

  • 凝縮系物理学
  • ポリマーおよびプラスチック
  • 有機化学
  • 材料化学


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