Bedrettin SAVAŞ, Temel ÖZTÜRK, Ergül MEYVACI

Poli(4-vinilbenzil-g-stiren) Aşı Kopolimerinin RAFT ve SRP Yöntemleriyle Sentezi ve Karakterizasyonu

Poli(4-vinilbenzil-g-stiren) [poli(VB-g-S)] aşı kopolimeri tersinir katılmalı/ayrışmalı zincir transfer (RAFT) ve serbest radikal polimerizasyon (SRP) teknikleri kullanılarak sentez edildi. Bu amaç için, 4-vinilbenzil klorür monomeri kullanılarak SRP yöntemiyle poli(4-vinilbenzil klorür) [poli-4-VBC] polimeri sentezlendi. İkinci aşamada, poli-4-VBC polimeri ile potasyum etil ksantat reaksiyona sokularak makro-RAFT ajanı oluşturuldu. Son aşamada, RAFT tekniğiyle makro-RAFT ajanı varlığında stiren monomeriyle poli(VB-g-S) aşı kopolimeri sentez edildi. Sentezlenen ürünler $^1H$-NMR, FT-IR, TGA, SEM ve Dinamik Işık Saçılımı (DLS) cihazları gibi spektroskopik ve termal analiz teknikleri kullanılarak karakterize edildi.

Synthesis and Characterization of Poly(4-vinylbenzyl-g-styren) Graft Copolymer by RAFT and FRP Methods

Synthesis of poly(4-vinylbenzyl-g-styrene) [poly(VB-g-S)] graft copolymer was carried out by free radical polymerization (FRP) and reversible addition-fragmentation chain transfer polymerization (RAFT) methods. For this purpose, poly(4-vinylbenzyl chloride) [poly-4-VBC] was synthesized using 4-vinylbenzyl chloride by FRP. In second stage, macro-RAFT agent was synthesized by chemical reaction of poly-4-VBC with potassium ethyl xanthogenate. In last stage, macro-RAFT agent and styrene were used to obtain poly(VB-g-S) graft copolymer by RAFT polymerization. Product characterization was fulfilled by using spectroscopic and thermal analysis techniques such as $^1H$-NMR, FT-IR, TGA, SEM and Dynamic Light Scattering (DLS) instruments.

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