Banca de DEFESA: MARIANA GOMES TAVARES

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : MARIANA GOMES TAVARES
DATE: 27/07/2023
TIME: 13:00
LOCAL: Google Meet
TITLE:

LATENT DIGITAL PRINT DEVELOPMENT ON METALLIC SURFACE FROM THEELECTRODEPOSITIONOFPOLYPYRROLDOPEDWITHMETHYLORANGEANDINDIGO CARMINE

KEY WORDS:

Conductivepolymers;carmineindigo;Methylorange;latentfingerprint;metallic surface.

PAGES: 55
BIG AREA: Ciências Exatas e da Terra
AREA: Química
SUMMARY:

Forensic experts seek through representations of fingerprints (palm and sole) found at a crime scene to help justice inthe elucidation of cases. Most of the time the fingerprint found at a crime scene is latent and needs development,several techniques are developed to reveal a latent fingerprint such as the powder, ninhydrin, ethyl cyanoacrylate andiodine vapor technique.However,thesemethodshaveahigh cost,highlytoxicreagentsfor the analyst,andlimitations regarding the aging of the fingerprint, in addition, they are not efficient on metallic substrates. Therefore,this work used conjugated polymers to reveal fingerprints on a metallic surface, In this method, the sebaceousmaterial present in the fingerprint forms an insulating mask on the steel surface, and the polymer deposits betweenthe ridges, generating a negative image, enabling its development. The polymer used was polypyrrole and thepolymerizationoccurredusingthemethodsofchronoamperometryandchronopotentiometry.

BANKING MEMBERS:
Presidente - 1543737 - ADRIANA SANTOS RIBEIRO
Externo(a) à Instituição - JOHNNATAN DUARTE DE FREITAS - IFAL
Interno(a) - 2343745 - JULIO COSME SANTOS DA SILVA