TY - JOUR
T1 - Preserving the reactivity of coatings plasma deposited from oxazoline precursors − An in depth study
AU - MacGregor, Melanie
AU - Sinha, Ujala
AU - Visalakshan, Rahul M.
AU - Cavallaro, Alex
AU - Vasilev, Krasimir
PY - 2019/2
Y1 - 2019/2
N2 - Plasma coatings deposited from oxazoline precursors have recently emerged as a valuable utility in many biotechnology application, however, their wider utilization by researchers and industry rely on their long term performance, and more specifically on the retention of their reactivity. Yet, plasma polymers are known to be susceptible to post-fabrication oxidation processes and intrinsic restructuration. Here, the aging of coatings deposited from oxazoline precursors was studied over 12 months via XPS, ToF-SIMS, and sessile drop contact angle analysis for samples stored under various conditions. The extent of the damages caused by light and oxygen are identified and explained. Storage away from ambient light and under vacuum proved to retain high reactivity toward COOH-bearing ligand and biomolecules even 12 months post deposition.
AB - Plasma coatings deposited from oxazoline precursors have recently emerged as a valuable utility in many biotechnology application, however, their wider utilization by researchers and industry rely on their long term performance, and more specifically on the retention of their reactivity. Yet, plasma polymers are known to be susceptible to post-fabrication oxidation processes and intrinsic restructuration. Here, the aging of coatings deposited from oxazoline precursors was studied over 12 months via XPS, ToF-SIMS, and sessile drop contact angle analysis for samples stored under various conditions. The extent of the damages caused by light and oxygen are identified and explained. Storage away from ambient light and under vacuum proved to retain high reactivity toward COOH-bearing ligand and biomolecules even 12 months post deposition.
KW - aging
KW - hydrophobic recovery
KW - oxazoline
KW - oxidation
KW - plasma polymer
UR - http://www.scopus.com/inward/record.url?scp=85056747870&partnerID=8YFLogxK
UR - http://purl.org/au-research/grants/ARC/DP15104212
UR - http://purl.org/au-research/grants/NHMRC/1122825
UR - http://purl.org/au-research/grants/NHMRC/1032738
U2 - 10.1002/ppap.201800130
DO - 10.1002/ppap.201800130
M3 - Article
AN - SCOPUS:85056747870
SN - 1612-8850
VL - 16
JO - Plasma Processes and Polymers
JF - Plasma Processes and Polymers
IS - 2
M1 - 1800130
ER -