Polymerization and polymer characterization of N-vinylcaprolactam
N-vinilkaprolaktam polimerleştirilmesi ve polimer karakterizasyonu
- Tez No: 166887
- Danışmanlar: PROF.DR. ALİ USANMAZ
- Tez Türü: Yüksek Lisans
- Konular: Polimer Bilim ve Teknolojisi, Polymer Science and Technology
- Anahtar Kelimeler: Solid state polymerization, N-vinylcaprolactam, radiation polymerization, characterization, Solid state polymerization, N-vinylcaprolactam, radiation polymerization, characterization
- Yıl: 2005
- Dil: İngilizce
- Üniversite: Orta Doğu Teknik Üniversitesi
- Enstitü: Fen Bilimleri Enstitüsü
- Ana Bilim Dalı: Polimer Bilim ve Teknolojisi Ana Bilim Dalı
- Bilim Dalı: Belirtilmemiş.
- Sayfa Sayısı: Belirtilmemiş.
Özet
ABSTRACT POLYMERIZATION AND POLYMER CHARACTERIZATION OF N-VINLYCAPROLACTAM Polat, Özlem M.S., Department of Polymer Selence and Technology Supervisor : Prof. Dr. Ali Usanmaz September 2005, 78 pages in this study, N-vinylcaprolactam was polymerized by radiation in the solid state. The poiymerization was carried out at room temperaîure under vacuum and öpen îo atmosphere respectively. The poiymerization mechanism showed autoacceieration and the rate of poiymerization was higher in the presence of oxygen. However the limiting conversion was ! 00% under vacuum conditions and 90% in the present of oxygen. This is due to the low molecuiar weight oligomer forrnation in the presence of oxygen. The polymers were characterized by FT-IR, NMR, DSC, TGA, Light Scattering, GPC, Viscosity, X-Ray and mass spectrometry methods. FT-IR and NMR results showed that poiymerization proceded through the vinyî groups and caprolactam is a pendent group. DSC results show that the polymer produced could be polymerized further ör crosslink by heat treatment. The Tg value for the polymer obtained frorn radiation induced poiymerization was about 147 °C. it increased to 174 °C after îherrnal treatment. Solution properties were studied by Light Scattering, GPC and viscosity measurements. The solution behavior of the polymer was highly dependent on the molecuiar weight of the polymer. This effect was also the ivconformation of polymer in solution and the viscosity properîies. Since the polymer obîained had low moiecular weight a regular relation could not be obtained for the radius of gyration, hydrodynamic radius and viscosity. X-ray diffraction studies showed that the monomer structure was retained up to about 86% conversion of monomer to polymer. The chain structure of the polymer was confîrmed further by mass spectroscopic results.
Özet (Çeviri)
ABSTRACT POLYMERIZATION AND POLYMER CHARACTERIZATION OF N-VINLYCAPROLACTAM Polat, Özlem M.S., Department of Polymer Selence and Technology Supervisor : Prof. Dr. Ali Usanmaz September 2005, 78 pages in this study, N-vinylcaprolactam was polymerized by radiation in the solid state. The poiymerization was carried out at room temperaîure under vacuum and öpen îo atmosphere respectively. The poiymerization mechanism showed autoacceieration and the rate of poiymerization was higher in the presence of oxygen. However the limiting conversion was ! 00% under vacuum conditions and 90% in the present of oxygen. This is due to the low molecuiar weight oligomer forrnation in the presence of oxygen. The polymers were characterized by FT-IR, NMR, DSC, TGA, Light Scattering, GPC, Viscosity, X-Ray and mass spectrometry methods. FT-IR and NMR results showed that poiymerization proceded through the vinyî groups and caprolactam is a pendent group. DSC results show that the polymer produced could be polymerized further ör crosslink by heat treatment. The Tg value for the polymer obtained frorn radiation induced poiymerization was about 147 °C. it increased to 174 °C after îherrnal treatment. Solution properties were studied by Light Scattering, GPC and viscosity measurements. The solution behavior of the polymer was highly dependent on the molecuiar weight of the polymer. This effect was also the ivconformation of polymer in solution and the viscosity properîies. Since the polymer obîained had low moiecular weight a regular relation could not be obtained for the radius of gyration, hydrodynamic radius and viscosity. X-ray diffraction studies showed that the monomer structure was retained up to about 86% conversion of monomer to polymer. The chain structure of the polymer was confîrmed further by mass spectroscopic results.
Benzer Tezler
- Polymerization and characterization of N-vinylcaprolactam
N-vinilkaprolaktam polimerleştirilmesi ve karakterizasyonu
SELİN KOZANOĞLU
Yüksek Lisans
İngilizce
2008
Polimer Bilim ve TeknolojisiOrta Doğu Teknik ÜniversitesiPolimer Bilim ve Teknolojisi Ana Bilim Dalı
DR. TONGUÇ ÖZDEMİR
PROF. DR. ALİ USANMAZ
- Polymrization and polymer characterization of n-butyl acrylate
N-butil akrilatın polimerleşmesi ve polimer karakterizasyonu
TAHİR ERİNÇ ENGİN
Yüksek Lisans
İngilizce
1998
KimyaOrta Doğu Teknik ÜniversitesiKimya Ana Bilim Dalı
PROF. DR. ALİ USANMAZ
- N-İzopropilakrilamid-itakonik asit kopolimerlerinin sentezi ve karakterizasyonu
Başlık çevirisi yok
F.DİLEK AKPINAR
Yüksek Lisans
Türkçe
1998
Kimyaİstanbul Teknik ÜniversitesiFizikokimya Ana Bilim Dalı
DOÇ. DR. CANDAN ERBİL
- İyonlaşabilen gruplar içeren N-izopropilakrilamid kopolimer jellerinin sentez ve karakterizasyonu
Başlık çevirisi yok
SEVAL ARAS
Yüksek Lisans
Türkçe
1998
Kimyaİstanbul Teknik ÜniversitesiKimyagerlik Ana Bilim Dalı
DOÇ. DR. CANDAN ERBİL
- Azo bağı içeren politetrahidrofuran sentezi ve karakterizasyonu
Synthesis and characterization of azo-linked polytetrahydrofuran
GÜRKAN HIZAL