Applied Surface Science 442 (2018) 602–612 Contents lists available at ScienceDirect Applied Surface Science journal homepage: www.elsevier.com/locate/apsusc Full Length Article Surface characterization and free thyroid hormones response of chemically modiﬁed poly(ethylene terephthalate) blood collection tubes a b a a c c Ebrahim Jalali Dil , Samuel C. Kim , Amir Saffar , Abdellah Ajji , Richard N. Zare , Annie Sattayapiwat , c c,⇑ Vanessa Esguerra , Rafﬁck A.R. Bowen Ecole Polytechnique de Montreal, Montreal, QC, Canada University of California, San Francisco, San Francisco, CA, USA Stanford University, Stanford, CA, USA ar ti c l e i nf o ab stra ct Article history: The surface chemistry and surface energy of chemically modiﬁed polyethylene terephthalate (PET) blood Received 7 December 2017 collection tubes (BCTs) were studied and the results showed a signiﬁcant increase in hydrophilicity and Revised 9 February 2018 polarity of modiﬁed PET surface. The surface modiﬁcation created nanometer-sized, needle-like asperi- Accepted 17 February 2018 ties through molecular segregation at the surface. The surface dynamics of the modiﬁed PET was exam- Available online 22 February 2018 ined by tracking its surface properties over a 280-day period. The results showed surface rearrangement toward a surface with lower surface energy
Precambrian Research – Elsevier
Published: May 1, 2018
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