ABSTRACT. This review focuses on polyurethane and carboxylic acid-carbodiimide cross-linked systems for leather fi nishes. Recently, these cross-links have become very popular in leather fi nishing. The cross-links in leather fi nishes improve the strength proper# es of the fi nished leather, the excess of cross-links causes bri$ leness. The mul# func# onal carbodiimide cross-linkers are useful for leather surface proper# es improvement. The carbodiimide groups are sensi# ve to hydrolysis; life # me of this func# onal group during polymeriza# on is enhanced. Water dispersible isocyanates, polyurethane copolymers and polyisocyanate cross-links have applica# ons in new technologies are discussed in this review. KEY WORDS: cross-linker, polycarbodiimide, diisocyanate, leather, polyurethane AGENŢI DE RETICULARE PE BAZĂ DE POLICARBODIIMIDĂ ŞI POLIEURETAN PENTRU FINISAREA PIELIIREZUMAT. Acest ar# col se concentrează asupra sistemelor de re# culare pe bază de poliuretan şi acid carboxilic-carbodiimidă pentru fi nisarea pielii. Recent, aceste # puri de re# culări au devenit foarte populare în fi nisarea pieilor. Re# cularea pielii la fi nisare îmbunătăţeşte proprietăţile de rezistenţă ale pieii fi nite, în # mp ce excesul de legături încrucişate determină fragilitate. Agenţii de re# culare mul# funcţionali carbodiimidici sunt u# li pentru îmbunătăţirea proprietăţilor de suprafaţă ale pielii. Grupările carbodiimidice sunt sensibile la hidroliză; durata de viaţă a acestui grup funcţional în # mpul polimerizării este sporită. Re# culările cu izocianaţii dispersabili în apă, copolimerii poliuretanici şi poliizocianaţi discutate în această lucrare au aplicaţii în tehnologii noi. CUVINTE CHEIE: agent de re# culare, policarbodiimidă, diizocianat, piele, poliuretan AGENTS DE RÉTICULATION POLYCARBODIIMIDE ET POLYURÉTHANE POUR LA FINITION DU CUIRRÉSUMÉ. Cet ar# cle met l'accent sur les systèmes de ré# cula# on à base de polyuréthane et de l'acide carboxylique-carbodiimide pour la fi ni# on du cuir. Récemment, ces types de ré# cula# ons sont devenus très populaires dans la fi ni# on du cuir. La ré# cula# on du cuir dans l'opéra# on de fi ni# on améliore les propriétés de résistance du cuir fi ni, tandis que la ré# cula# on excessive entraîne une fragilité. Les agents de ré# cula# on mul# fonc# onnels de carbodiimide sont u# les pour améliorer les propriétés de surface du cuir. Les groupes carbodiimide sont sensibles à l'hydrolyse; la durée de vie de ce groupe fonc# onnel pendant la polymérisa# on est augmentée. Les ré# cula# ons avec des isocyanates dispersables dans l'eau, des copolymères de polyuréthane et des polyisocyanates décrits dans cet ar# cle ont des applica# ons dans de nouvelles technologies. MOTS CLÉS: agent de ré# cula# on, polycarbodiimide, diisocyanate, cuir, polyuréthane

The present work describes the acid functionalization of single-walled carbon nanotubes (SWCNTs) with N-acetyl-p-amino phenol methacrylate (APM) of structural, thermal, morphological electrochemical and biological properties. The target nanohybrid composites were obtained by the condensation reaction between SWCNT, N-acetyl-p-amino phenol and methacrylic anhydride. The N-acetyl-p-aminophenol methacrylate [APM] was successfully immobilized with SWCNTs by free radical polymerization technique (FRP). The uniform dispersion on SWCNTs was achieved by functionalization of APM on the SWCNT surface, and the stability confirms up to 8 months. The stability enhancement is due to strong interaction of the SWCNTs carboxylic group with the amide moieties of the polymer. The morphological studies were performed by FE-SEM and HR-TEM, which shows distinct morphological architecture based on the arrangement of nanotubes into the polymer. The synthesized nanocomposites were characterized through various spectroscopic measurements. The anti-cancer studies, results obtained by this process are ideal, and showed optimal percentage of cancer cell death upon a 48 h cell line analysis.