Free Radical Polymerization of Dimethyl Amino Ethyl Methacrylate Initiated by Poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) Macroazo Initiator: Thermal and Physicochemical Characterization

Hazer B., Modjinou T., Langlois V., Göktaş M., Taşçı F., Ashby R. D., ...Daha Fazla

Journal of Polymers and the Environment, cilt.31, sa.8, ss.3688-3699, 2023 (SCI-Expanded) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 31 Sayı: 8
  • Basım Tarihi: 2023
  • Doi Numarası: 10.1007/s10924-023-02857-3
  • Dergi Adı: Journal of Polymers and the Environment
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, PASCAL, Aerospace Database, BIOSIS, Chemical Abstracts Core, Chimica, Communication Abstracts, Compendex, Environment Index, Geobase, Greenfile, Metadex, Pollution Abstracts, Civil Engineering Abstracts
  • Sayfa Sayıları: ss.3688-3699
  • Anahtar Kelimeler: Dimethyl amino ethyl methacrylate, Macroazo initiator, Poly(3-hydroxybutyrate-co-3-hydroxyhexanoate), Polymerization kinetics
  • Van Yüzüncü Yıl Üniversitesi Adresli: Evet

Özet

A novel macro intermediate based on poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) (PHBHHx) was synthesized for use in the copolymerization with dimethyl amino ethyl methacrylate (DMAEMA). Methyl amino ethanol was reacted with PHBHHx to prepare a dihydroxy terminated polyester. The hydroxyl ends of the obtained PHBHHx derivatives were capped with 4,4’-azobis cyanopentanoic acid to obtain the PHBHHx macroazo initiator (PHBHHx-AI) for free radical copolymerization of DMAEMA at 70oC. A steady increase in DMAEMA units in the synthesized block copolymer as a function of time was observed. The overall rate constants for the free radical polymerization of DMAEMA initiated by PHBHHx-AI was k = 2.33 × 10− 4 Lmol-1s-1. Block copolymers were characterized using the 1 H NMR, FTIR, DSC and TGA techniques.