Synthesis and characterization of Ti-/Zr-diphenylpropanedione complexes and their application in the ring opening polymerization of Ɛ-caprolactone

Yagmur GÖKALP; Asgar KAYAN

doi:https://doi.org/10.18596/jotcsa.428666

Makale detayları

Synthesis and characterization of Ti-/Zr-diphenylpropanedione complexes and their application in the ring opening polymerization of Ɛ-caprolactone

Yazarlar:

Yagmur GÖKALP | Asgar KAYAN

Yayıncı:

Turkish Chemical Society

Ana Başlıklar:

Kimya mühendisliği

Dergi:

Journal of the Turkish Chemical Society Section A: Chemistry 2018 Vol.5 Issue 3, pp.1095-1104

Belge Tipi:

Makale

Yayın Tarihi:

8/2018

Belge Dili:

İngilizce

Document ID (Org No.):

2000502972

Sıklık:

Üç Aylık

eISSN:

2149-0120

DOI:

https://doi.org/10.18596/jotcsa.428666

Özet:

 


 The purpose has been to achieve a controlled ring-opening polymerization of ɛ-caprolactone, resulting in polymers with desirable properties such as high molecular weight, low polydispersity index, and highly regio-/stereo regular forms. Therefore, it is important to synthesize single site or reduced number of active site metal alkoxide compounds as catalysts. Ti(IV)/Zr(IV) diphenylpropanedione complexes were synthesized by reactions of titanium or zirconium alkoxides with diphenylpropanedione (dion)  ligand. The obtained complexes were characterized by nuclear magnetic resonance (1H-, 13C-NMR), high resolution mass (HRMS), Fourier transform infrared (FTIR) spectroscopies and elemental analysis. These compounds were tested as catalysts for the ring opening polymerization of Ɛ-caprolactone. The structure of poly-caprolactone (PCL) was analyzed by some spectroscopic techniques (NMR, FTIR) and gel permeation chromatography (GPC). In this work, all Ti-/Zr-complexes were effective over polymerization of Ɛ-caprolactone in solventless environment. Consequently, Ɛ-caprolactone polymers were obtained different average molecular weights between 7000-34000 Da with the PDI values of 1.14-1.60.

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Makale detayları

Synthesis and characterization of Ti-/Zr-diphenylpropanedione complexes and their application in the ring opening polymerization of Ɛ-caprolactone

Yazarlar: Yagmur GÖKALP | Asgar KAYAN

Yayıncı: Turkish Chemical Society

Ana Başlıklar: Kimya mühendisliği

Dergi: Journal of the Turkish Chemical Society Section A: Chemistry 2018 Vol.5 Issue 3, pp.1095-1104

Belge Tipi: Makale

Yayın Tarihi: 8/2018

Belge Dili: İngilizce

Document ID (Org No.): 2000502972

Sıklık: Üç Aylık

eISSN: 2149-0120

DOI: https://doi.org/10.18596/jotcsa.428666

Sayı

Yazarlar:

Yagmur GÖKALP | Asgar KAYAN

Yayıncı:

Turkish Chemical Society

Ana Başlıklar:

Kimya mühendisliği

Dergi:

Journal of the Turkish Chemical Society Section A: Chemistry 2018 Vol.5 Issue 3, pp.1095-1104

Belge Tipi:

Makale

Yayın Tarihi:

8/2018

Belge Dili:

İngilizce

Document ID (Org No.):

2000502972

Sıklık:

Üç Aylık

eISSN:

2149-0120

DOI:

https://doi.org/10.18596/jotcsa.428666