Poli(ε-kaprolakton)-b-poli(akrilamid) blok kopolimerlerinin sentezi ve karakterizasyonu

Öz

Bu çalışmada, poli(ε-kaprolakton)-b-poli(akrilamid) blok kopolimerleri tersinir katılmalı/ayrışmalı zincir transfer (RAFT) ve halka açılma polimerizasyon yöntemleri ile tek basamak üzerinden sentezlendi. Bunun için hem halka açılma polimerizasyonuna hem de tersinir katılmalı/ayrışmalı zincir transfer polimerizasyonuna aynı anda ve tek basamakta olanak sağlayan, iki fonksiyonlu 2-(2-kloro etoksi) etanol) başlatıcısı ile potasyum etil ksantat reaksiyona sokularak iki kollu RAFT-ROP başlatıcısı sentezlendi. Elde edilen bu RAFT-ROP başlatıcısı kullanılarak poli(CL-b-AAm) blok kopolimerleri monomer miktarı değiştirilerek sentezlendi. Blok kopolimerlerin blok uzunlukları 1H-NMR yardımıyla hesaplandı. Sentezlenen blok kopolimerlerin blok uzunlukları monomer konsantrasyonunun değiştirilmesiyle ayarlanabilmektedir. Blok kopolimerler 1H-NMR, FT-IR, DSC ve SEM teknikleri kullanılarak karakterize edildi.

Anahtar Kelimeler

• ε-kaprolakton,akrilamid,tersinir katılmalı/ayrışmalı zincir transfer (RAFT) polimerizasyonu,halka-açılma polimerizasyon (ROP),blok kopolimer

Synthesis and characterization of poly(ε-caprolactone)-b-poly(acrylamide) block copolymers

Öz

In this study, poly(acrylamide–b–ԑ-caprolactone) block copolymers were synthesized by a combination of reversible addition-fragmentation chain transfer (RAFT) polymerization and ring-opening polymerization (ROP) methods using a chain-transfer agent (RAFT-ROP initiator) which was obtained via the reaction of 2-(2-Chloroethoxy)ethanol with the potassium salt of ethyl xanthogenate. The block length of the block copolymers could be adjusted by changing monomer concentrations. The characterization of the products was achieved using 1H-NMR, FT-IR, DSC and SEM techniques.

Anahtar Kelimeler

• ε-kaprolakton,akrilamid,tersinir katılmalı/ayrışmalı zincir transfer (RAFT) polimerizasyonu,ring-opening polymerization (ROP)

Kaynakça

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