It was then mixed with IPTES (A-SWCNTs/IPTES = 1:2; v/v), and the solution was subsequently refluxed at 65[degrees] C, for 24 hr.
The characteristic peaks at 3350 and 1600 [cm.sup.-1] are amino group (-NH) stretching, which indicates that the -COOH groups of A-SWCNTs were efficient reacted with isocynate (-NCO) ends of IPTES.
This can be attributed to the residual -COOH groups on the A-SWCNTsSi surface that have not reacted completely with IPTES. The characteristic peak at 1180 [cm.sup.-1] is Si-O-Si .
2-hydroxyethyl methacrylate (HEMA), azobisisobutyronitrile (AIBN), 1-dodecanethiol, IPTES, poly(methyl methacrylate) (PMMA) (average [M.sub.w] 120,000), isopropanol (IPA), and anhydrous N,N-dimethylformamide (DMF) were purchased from Aldrich Chemical.
Three types of PHEMA-S (PS40, PS60, PS80) were synthesized using PHEMA and IPTES. 40, 60, 80 indicate the mole percent of triethoxysillyl groups in hydroxyl groups of PHEMA.
In our study, hard coatings were deposited on a polycarbonate plate using a sol-gel process with PHEMA, TEOS, MTES, MPMF, and IPTES. The hydroxyl groups in PHEMA partially reacted with the isocyanate group in IPTES to form a urethane group.
The IPTES was designed to bring together practitioners, academicians, and researchers to enhance information sharing and promote collaboration among the impression, pattern, and trace evidence professionals in both the law enforcement and legal communities.
The IPTES included 9 half- and full-day workshops on the first day, followed by two additional days during which there were 2 keynote addresses, 4 plenary sessions, 36 posters, and 52 oral presentations.
The success of the 2015 IPTES was due to the strong support of the volunteer steering committee.