Synthesis of Novel Macromonomers with Aliphatic Ester-ether Backbone and Their Use in “Grafting Through” Strategy

Efkan Çatıker; Temel Öztürk

Makale detayları

Synthesis of Novel Macromonomers with Aliphatic Ester-ether Backbone and Their Use in “Grafting Through” Strategy

Yazarlar:

Efkan Çatıker | Temel Öztürk

Yayıncı:

Giresun University

Ana Başlıklar:

Fiziksel Kimya (Diğer)

Dergi:

Karadeniz Fen Bilimleri Dergisi Vol.14 Issue 3, pp.1471-1485

Belge Tipi:

Makale

Yayın Tarihi:

9/2024

Belge Dili:

Türkçe

Document ID (Org No.):

2001326816

pISSN:

2564-7377

Anahtar kelimeler:

Özet:

 In this study, polyacrylic acid-g-hydroxyethyl acrylate PAA-g-PHEA and polyacrylic acid-g-hydroxypropyl acrylate PAA-g-PHPA graft copolymers were synthesized by the free-radical polymerization SRP method. For this, in the first step, poly2-hydroxyethyl acrylate PHEA and poly2-hydroxypropyl acrylate PHPA were obtained by base-catalyzed hydrogen transfer polymerization HTP method using 2-hydroxyethyl acrylate HEA and 2-hydroxypropyl acrylate HPA as monomers, respectively. Since these obtained structures contained vinyl groups at the chain ends, they were used as macromonomers in the second stage. At this stage, PAA-g-PHEA and PAA-g-PHPA graft copolymers were obtained by subjecting acrylic acid and these macromonomers separately to free radical polymerization SRP with the grafting through approach. Structural and thermal characterization of both synthesized products was achieved by 1H-NMR, FT-IR, and TGA methods, which are among the most basic spectroscopic and thermal analysis methods. The fact that SRP yields are almost 100, there are no signals of the vinyl end-group in the 1H-NMR spectra of the final products, and the mass loss values of both components are almost equal in the TGA thermograms reveal the success of the applied synthesis strategy.

 In this study, polyacrylic acid-g-hydroxyethyl acrylate PAA-g-PHEA and polyacrylic acid-g-hydroxypropyl acrylate PAA-g-PHPA graft copolymers were synthesized by the free-radical polymerization SRP method. For this, in the first step, poly2-hydroxyethyl acrylate PHEA and poly2-hydroxypropyl acrylate PHPA were obtained by base-catalyzed hydrogen transfer polymerization HTP method using 2-hydroxyethyl acrylate HEA and 2-hydroxypropyl acrylate HPA as monomers, respectively. Since these obtained structures contained vinyl groups at the chain ends, they were used as macromonomers in the second stage. At this stage, PAA-g-PHEA and PAA-g-PHPA graft copolymers were obtained by subjecting acrylic acid and these macromonomers separately to free radical polymerization SRP with the grafting through approach. Structural and thermal characterization of both synthesized products was achieved by 1H-NMR, FT-IR, and TGA methods, which are among the most basic spectroscopic and thermal analysis methods. The fact that SRP yields are almost 100, there are no signals of the vinyl end-group in the 1H-NMR spectra of the final products, and the mass loss values of both components are almost equal in the TGA thermograms reveal the success of the applied synthesis strategy.

 In this study, polyacrylic acid-g-hydroxyethyl acrylate PAA-g-PHEA and polyacrylic acid-g-hydroxypropyl acrylate PAA-g-PHPA graft copolymers were synthesized by the free-radical polymerization SRP method. For this, in the first step, poly2-hydroxyethyl acrylate PHEA and poly2-hydroxypropyl acrylate PHPA were obtained by base-catalyzed hydrogen transfer polymerization HTP method using 2-hydroxyethyl acrylate HEA and 2-hydroxypropyl acrylate HPA as monomers, respectively. Since these obtained structures contained vinyl groups at the chain ends, they were used as macromonomers in the second stage. At this stage, PAA-g-PHEA and PAA-g-PHPA graft copolymers were obtained by subjecting acrylic acid and these macromonomers separately to free radical polymerization SRP with the grafting through approach. Structural and thermal characterization of both synthesized products was achieved by 1H-NMR, FT-IR, and TGA methods, which are among the most basic spectroscopic and thermal analysis methods. The fact that SRP yields are almost 100, there are no signals of the vinyl end-group in the 1H-NMR spectra of the final products, and the mass loss values of both components are almost equal in the TGA thermograms reveal the success of the applied synthesis strategy.

 Bu çalışmada, poliakrilik asit-g-hidroksietil akrilat PAA-g-PHEA ve poliakrilik asit-g-hidroksipropil akrilat PAA-g-PHPA aşı kopolimerlerinin serbest radikal polimerizasyonu SRP yöntemiyle sentezleri gerçekleştirildi. Bunun için ilk aşamada, 2-hidroksietil akrilat HEA ve 2-hidroksipropil akrilat HPA kullanılarak baz katalizli hidrojen transfer polimerizasyonu HTP metoduyla sırasıyla poli2-hidroksietil akrilat PHEA ve poli2-hidroksipropil akrilat PHPA elde edildi. Elde edilen bu yapılar zincir uçlarında vinil grupları barındırdığından ikinci aşamada makromonomer olarak kullanıldılar. Bu aşamada dolaylı aşılama grafting through yaklaşımı ile akrilik asit ve bu makromonomerlerin ayrı ayrı serbest radikal polimerizasyonuna SRP uğratılmasıyla PAA-g-PHEA ve PAA-g-PHPA aşı kopolimeri elde edildi. Sentezlenen her iki ürünün yapısal ve termal karakterizasyonu en temel spektroskopik ve termal analiz yöntemlerinden olan 1H-NMR, FT-IR ve TGA yöntemleri ile sağlandı. SRP verimlerinin neredeyse 100 olması, nihai ürünlerin 1H-NMR spektrumlarında vinil uç grubuna ait sinyallerin olmaması ve TGA termogramlarında her iki bileşene ait kütle kayıp yüzdesinin neredeyse eşit olması uygulanan sentez stratejisinin başarısını ortaya koymaktadır.

Makale detayları

Synthesis of Novel Macromonomers with Aliphatic Ester-ether Backbone and Their Use in “Grafting Through” Strategy

Yazarlar:

Efkan Çatıker | Temel Öztürk

Yayıncı:

Giresun University

Ana Başlıklar:

Fiziksel Kimya (Diğer)

Dergi:

Karadeniz Fen Bilimleri Dergisi Vol.14 Issue 3, pp.1471-1485

Belge Tipi:

Makale

Yayın Tarihi:

9/2024

Belge Dili:

Türkçe

Document ID (Org No.):

2001326816

pISSN:

2564-7377

Free radical polymerization

Hydrogen transfer polymerization

Graft copolymer

“Grafting through” strategy

MacromonomerSerbest radikal polimerizasyonu

Hidrojen transfer polimerizasyonu

Aşı kopolimer

“Dolaylı aşılama” stratejisi

Makromonomer

Sayı

Makale detayları

Yazarlar: Efkan Çatıker | Temel Öztürk

Yayıncı: Giresun University

Ana Başlıklar: Fiziksel Kimya (Diğer)

Dergi: Karadeniz Fen Bilimleri Dergisi Vol.14 Issue 3, pp.1471-1485

Belge Tipi: Makale

Yayın Tarihi: 9/2024

Belge Dili: Türkçe

Document ID (Org No.): 2001326816

pISSN: 2564-7377

Sayı

Yazarlar:

Efkan Çatıker | Temel Öztürk

Yayıncı:

Giresun University

Ana Başlıklar:

Fiziksel Kimya (Diğer)

Dergi:

Karadeniz Fen Bilimleri Dergisi Vol.14 Issue 3, pp.1471-1485

Belge Tipi:

Makale

Yayın Tarihi:

9/2024

Belge Dili:

Türkçe

Document ID (Org No.):

2001326816

pISSN:

2564-7377