Synthesis and Characterization of Poly(linoleic acid)-g-poly(Nisopropylacrylamide)-g-poly (D, L-lactide) Graft Copolymers by Onepot Polymerization Method

Abstract

In this study, one-pot three-block graft copolymers were synthesized using a combination of ring opening polymerization and free radical polymerization of Auto-oxidized polymeric linoleic acid peroxide (PLina). Graft copolymers with poly(linoleic acid)-g-poly(N-isopropylacrylamide)-g-poly(D,L-lactide) structure were synthesized the free radical polymerization with N-isopropylacrylamide (NIPAM) in monomer the main chain of PLina and the ring opening polymerization of the D, L-lactide (LA) monomer with carboxylic acid groups of PLina with together. The basic parameters such as polymerization time, initiator concentration and monomer concentration affecting the one-pot polymerization reaction were investigated. Characterization of the obtained graft copolymers were carried out using 1H NMR and GPC techniques.

Keywords

• Autooxidation
• ε-caprolacton
• D,L-lactid
• N-isopropilacrylamide
• Linoleic acid
• Auto-oxidation
• One-step (one-pot) polymerization

One-pot PolimerleşmeYöntemiyle Poli(linoleik asit)-g-Poli(N-isopropilakrilamit)-g-Poli(D,L-laktid) Graft Kopolimerlerin Sentezi ve Karakterizasyonu

Abstract

Bu çalışmada, Otookside polimerik linoleik asit peroksit (PLina)’nın halka açılma polimerizasyonu ve serbest radikal polimerizasyonu bir arada kullanılarak tek adımda (one-pot) üç bloklu graft kopolimerler sentezlendi. Poli(linoleik asit)-g-poli(N-isopropilakrilamit)-g-poli(D,L-laktid) yapısına sahip graft kopolimerler; PLina’nın ana zincirinde bulunan peroksit grupları ile N-isopropilakrilamit (NIPAM) monomeriyle serbest radikal polimerizasyonu ve PLina’nın karboksilik asit grupları ile D,L-laktid (LA) monomeri arasındaki halka açılma polimerizasyonunun bir arada (one-pot) kullanılmasıyla sentezlendiler. One-pot polimerizasyon reaksiyonuna etki eden polimerizasyon süresi, başlatıcı konsantrasyonu ve monomer konsantrasyonu gibi temel parametreler incelendi. Elde edilen graft kopolimerlerin karakterizasyonları ¹H NMR ve GPC teknikleri kullanılarak yapıldı. 

Keywords

• ε-kaprolakton
• N-izopropilakrilamit
• D
• L-laktid
• Linoleik asit
• Linolenik asit
• Otooksidasyon
• Tek adım(one-pot) polimerizasyonu

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