Mikrodalga destekli halka-açılma polimerizasyonu ile Zn(Oct)2 katalizörü varlığında PLA-PEG-PLA üçlü-blok kopolimerlerinin sentezi.
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| Title: | Mikrodalga destekli halka-açılma polimerizasyonu ile Zn(Oct) |
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| Alternate Title: | Synthesis and characterization of microwave-assisted ring-opening polymerization of PLA-PEG-PLA triblock copolymers in the presence of Zn(Oct)2 catalyst. |
| Authors: | Karabulut, Seher Şenada1,2 seher.senada@cht.com, Bayyar, Serdar2 serdar.bayyar@cht.com, Okur, Esra2 esra.okur@cht.com, Müftüler, Ayça1 ayca.muftuler@iuc.edu.tr, Deligöz, Hüseyin1 hdeligoz@iuc.edu.tr |
| Source: | Journal of the Faculty of Engineering & Architecture of Gazi University / Gazi Üniversitesi Mühendislik Mimarlık Fakültesi Dergisi,. Mar2026, Vol. 41 Issue 1, p17-28. 12p. |
| Subjects: | Ring-opening polymerization, Zinc catalysts, Thermal properties, Block copolymers, Molecular weights, Polymer structure, Biodegradable plastics |
| Abstract (English): | Polyethylene glycol (PEG) and poly(L-lactic acid) (PLA)-based triblock copolymers have attracted significant attention for biomedical and technical textile applications due to their biodegradable and biocompatible properties. In this study, PLA--PEG--PLA triblock copolymers were synthesized via microwave-assisted ring-opening polymerization (mROP) in the presence of zinc octoate (Zn(Oct)2) catalyst. While maintaining a constant monomer feed ratio (LA/PEG = 70:30 w/w), the effects of various Zn(Oct)2 catalyst amounts (0.2, 0.4, 0.6, 3.0 and 6.0 wt%) on the structural, thermal, and physicochemical properties of the synthesized polymers were systematically investigated. Analytical techniques including FTIR, DSC, ¹H NMR, GC-MS, and GPC analyses revealed that copolymers synthesized with 0.6 wt% Zn(Oct)2 exhibited the most controlled structure, characterized by a low polydispersity index (PDI) (1.54), high conversion rate (99.5%), homogeneous molecular structure (Mn = 5.642 g/mol, Mw = 8.685 g/mol), low glass transition temperature (Tg = -19.9°C), and a distinct melting temperature (Tm = 64.3°C). Unlike the studies reported in the literature, the present work systematically examined the effects of using different amounts of Zn(Oct)2 concentrations (0.2-6.0 wt%) on properties such as polymerization time, conversion, molecular weight distribution, and PDI in the microwave-assisted ring-opening polymerization of PLA-PEG-PLA copolymers. In this respect, the study clearly demonstrated both the advantage of the microwave system over conventional production methods and the low toxicity and high controlled chain formation potential of the Zn(Oct)2 catalyst compared to the currently used Sn(Oct)2. [ABSTRACT FROM AUTHOR] |
| Abstract (Turkish): | Polietilen glikol (PEG) ve poli(L-laktik asit) (PLA) esaslı üçlü-blok kopolimerler, biyobozunur ve biyouyumlu özellikleri nedeniyle biyomedikal ve teknik tekstil uygulamalarında büyük ilgi görmektedir. Bu çalışmada, PLA-PEG-PLA üçlü-blok kopolimerleri mikrodalga destekli halka-açılma polimerizasyonu (mROP) yöntemi ile çinko oktoat (Zn(Oct)2) katalizörü varlığında sentezlenmiştir. Monomer besleme oranı sabit tutularak (ağırlıkça LA/PEG=70:30), farklı Zn(Oct)2 katalizör miktarlarının (ağırlıkça %0,2; %0,4; %0,6; %3 ve %6) sentezlenen polimerlerin yapısal, termal ve fızikokimyasal özellikleri üzerindeki etkileri araştırılmıştır. FTIR, DSC, ¹H-NMR, GC-MS ve GPC analizleri sonucunda %0,6 oranında Zn(Oct)2 varlığında sentezlenen ürünlerin, düşük polidispersite indeksi (PDI) (1,54), yüksek dönüşüm oranı (%99,5), homojen moleküler yapı (Mn=5.642 g/mol, Mw=8.685 g/mol), düşük camsı geçiş sıcaklığı (Tg:-19,9 °C) ve erime sıcaklığı (Te:64,3°C) ile en kontrollü yapıya sahip kopolimerleri verdiğini ortaya koymuştur. Literatürde yer alan çalışmalardan farklı olarak, mikrodalga destekli halka-açılma polimerizasyonu ile PLA-PEG-PLA kopolimerlerinin sentezlenmesinde farklı miktarlarda Zn(Oct)2 (%0,2-%6,0) kullanımının sistematik olarak polimerizasyon süresi, dönüşüm, moleküler ağırlık dağılımı ve PDI gibi özellikler üzerindeki etkileri detaylı olarak incelenmiştir. Bu yönüyle çalışma, hem mikrodalga sisteminin konvensiyonel üretim yöntemleri üzerindeki avantajını, hem de Zn(Oct)2 katalizörünün mevcutta kullanılan Sn(OctVa göre düşük toksisite ve yüksek kontrollü zincir oluşumu potansiyelini açıkça göstermiştir. [ABSTRACT FROM AUTHOR] |
| Copyright of Journal of the Faculty of Engineering & Architecture of Gazi University / Gazi Üniversitesi Mühendislik Mimarlık Fakültesi Dergisi, is the property of Gazi University, Faculty of Engineering & Architecture and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
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| Items | – Name: Title Label: Title Group: Ti Data: Mikrodalga destekli halka-açılma polimerizasyonu ile Zn(Oct)<subscript>2</subscript> katalizörü varlığında PLA-PEG-PLA üçlü-blok kopolimerlerinin sentezi. – Name: TitleAlt Label: Alternate Title Group: TiAlt Data: Synthesis and characterization of microwave-assisted ring-opening polymerization of PLA-PEG-PLA triblock copolymers in the presence of Zn(Oct)2 catalyst. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Karabulut%2C+Seher+Şenada%22">Karabulut, Seher Şenada</searchLink><relatesTo>1,2</relatesTo><i> seher.senada@cht.com</i><br /><searchLink fieldCode="AR" term="%22Bayyar%2C+Serdar%22">Bayyar, Serdar</searchLink><relatesTo>2</relatesTo><i> serdar.bayyar@cht.com</i><br /><searchLink fieldCode="AR" term="%22Okur%2C+Esra%22">Okur, Esra</searchLink><relatesTo>2</relatesTo><i> esra.okur@cht.com</i><br /><searchLink fieldCode="AR" term="%22Müftüler%2C+Ayça%22">Müftüler, Ayça</searchLink><relatesTo>1</relatesTo><i> ayca.muftuler@iuc.edu.tr</i><br /><searchLink fieldCode="AR" term="%22Deligöz%2C+Hüseyin%22">Deligöz, Hüseyin</searchLink><relatesTo>1</relatesTo><i> hdeligoz@iuc.edu.tr</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Journal+of+the+Faculty+of+Engineering+%26+Architecture+of+Gazi+University+%2F+Gazi+Üniversitesi+Mühendislik+Mimarlık+Fakültesi+Dergisi%2C%22">Journal of the Faculty of Engineering & Architecture of Gazi University / Gazi Üniversitesi Mühendislik Mimarlık Fakültesi Dergisi,</searchLink>. Mar2026, Vol. 41 Issue 1, p17-28. 12p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Ring-opening+polymerization%22">Ring-opening polymerization</searchLink><br /><searchLink fieldCode="DE" term="%22Zinc+catalysts%22">Zinc catalysts</searchLink><br /><searchLink fieldCode="DE" term="%22Thermal+properties%22">Thermal properties</searchLink><br /><searchLink fieldCode="DE" term="%22Block+copolymers%22">Block copolymers</searchLink><br /><searchLink fieldCode="DE" term="%22Molecular+weights%22">Molecular weights</searchLink><br /><searchLink fieldCode="DE" term="%22Polymer+structure%22">Polymer structure</searchLink><br /><searchLink fieldCode="DE" term="%22Biodegradable+plastics%22">Biodegradable plastics</searchLink> – Name: Abstract Label: Abstract (English) Group: Ab Data: Polyethylene glycol (PEG) and poly(L-lactic acid) (PLA)-based triblock copolymers have attracted significant attention for biomedical and technical textile applications due to their biodegradable and biocompatible properties. In this study, PLA--PEG--PLA triblock copolymers were synthesized via microwave-assisted ring-opening polymerization (mROP) in the presence of zinc octoate (Zn(Oct)2) catalyst. While maintaining a constant monomer feed ratio (LA/PEG = 70:30 w/w), the effects of various Zn(Oct)2 catalyst amounts (0.2, 0.4, 0.6, 3.0 and 6.0 wt%) on the structural, thermal, and physicochemical properties of the synthesized polymers were systematically investigated. Analytical techniques including FTIR, DSC, ¹H NMR, GC-MS, and GPC analyses revealed that copolymers synthesized with 0.6 wt% Zn(Oct)2 exhibited the most controlled structure, characterized by a low polydispersity index (PDI) (1.54), high conversion rate (99.5%), homogeneous molecular structure (Mn = 5.642 g/mol, Mw = 8.685 g/mol), low glass transition temperature (Tg = -19.9°C), and a distinct melting temperature (Tm = 64.3°C). Unlike the studies reported in the literature, the present work systematically examined the effects of using different amounts of Zn(Oct)2 concentrations (0.2-6.0 wt%) on properties such as polymerization time, conversion, molecular weight distribution, and PDI in the microwave-assisted ring-opening polymerization of PLA-PEG-PLA copolymers. In this respect, the study clearly demonstrated both the advantage of the microwave system over conventional production methods and the low toxicity and high controlled chain formation potential of the Zn(Oct)2 catalyst compared to the currently used Sn(Oct)2. [ABSTRACT FROM AUTHOR] – Name: Abstract Label: Abstract (Turkish) Group: Ab Data: Polietilen glikol (PEG) ve poli(L-laktik asit) (PLA) esaslı üçlü-blok kopolimerler, biyobozunur ve biyouyumlu özellikleri nedeniyle biyomedikal ve teknik tekstil uygulamalarında büyük ilgi görmektedir. Bu çalışmada, PLA-PEG-PLA üçlü-blok kopolimerleri mikrodalga destekli halka-açılma polimerizasyonu (mROP) yöntemi ile çinko oktoat (Zn(Oct)2) katalizörü varlığında sentezlenmiştir. Monomer besleme oranı sabit tutularak (ağırlıkça LA/PEG=70:30), farklı Zn(Oct)2 katalizör miktarlarının (ağırlıkça %0,2; %0,4; %0,6; %3 ve %6) sentezlenen polimerlerin yapısal, termal ve fızikokimyasal özellikleri üzerindeki etkileri araştırılmıştır. FTIR, DSC, ¹H-NMR, GC-MS ve GPC analizleri sonucunda %0,6 oranında Zn(Oct)2 varlığında sentezlenen ürünlerin, düşük polidispersite indeksi (PDI) (1,54), yüksek dönüşüm oranı (%99,5), homojen moleküler yapı (Mn=5.642 g/mol, Mw=8.685 g/mol), düşük camsı geçiş sıcaklığı (Tg:-19,9 °C) ve erime sıcaklığı (Te:64,3°C) ile en kontrollü yapıya sahip kopolimerleri verdiğini ortaya koymuştur. Literatürde yer alan çalışmalardan farklı olarak, mikrodalga destekli halka-açılma polimerizasyonu ile PLA-PEG-PLA kopolimerlerinin sentezlenmesinde farklı miktarlarda Zn(Oct)2 (%0,2-%6,0) kullanımının sistematik olarak polimerizasyon süresi, dönüşüm, moleküler ağırlık dağılımı ve PDI gibi özellikler üzerindeki etkileri detaylı olarak incelenmiştir. Bu yönüyle çalışma, hem mikrodalga sisteminin konvensiyonel üretim yöntemleri üzerindeki avantajını, hem de Zn(Oct)2 katalizörünün mevcutta kullanılan Sn(OctVa göre düşük toksisite ve yüksek kontrollü zincir oluşumu potansiyelini açıkça göstermiştir. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Journal of the Faculty of Engineering & Architecture of Gazi University / Gazi Üniversitesi Mühendislik Mimarlık Fakültesi Dergisi, is the property of Gazi University, Faculty of Engineering & Architecture and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.17341/gazimmfd.1722242 Languages: – Code: tur Text: Turkish PhysicalDescription: Pagination: PageCount: 12 StartPage: 17 Subjects: – SubjectFull: Ring-opening polymerization Type: general – SubjectFull: Zinc catalysts Type: general – SubjectFull: Thermal properties Type: general – SubjectFull: Block copolymers Type: general – SubjectFull: Molecular weights Type: general – SubjectFull: Polymer structure Type: general – SubjectFull: Biodegradable plastics Type: general Titles: – TitleFull: Mikrodalga destekli halka-açılma polimerizasyonu ile Zn(Oct)2 katalizörü varlığında PLA-PEG-PLA üçlü-blok kopolimerlerinin sentezi. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Karabulut, Seher Şenada – PersonEntity: Name: NameFull: Bayyar, Serdar – PersonEntity: Name: NameFull: Okur, Esra – PersonEntity: Name: NameFull: Müftüler, Ayça – PersonEntity: Name: NameFull: Deligöz, Hüseyin IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 03 Text: Mar2026 Type: published Y: 2026 Identifiers: – Type: issn-print Value: 13001884 Numbering: – Type: volume Value: 41 – Type: issue Value: 1 Titles: – TitleFull: Journal of the Faculty of Engineering & Architecture of Gazi University / Gazi Üniversitesi Mühendislik Mimarlık Fakültesi Dergisi, Type: main |
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