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Fotoaktif reçine sentezi ve kopolimerleşmede kullanımı

Synthesis of fotoactive resin and using in copolymerization

  1. Tez No: 166757
  2. Yazar: SELİN ERGUN
  3. Danışmanlar: PROF. DR. AYŞEN ÖNEN, DOÇ. DR. NİLGÜN KIZILCAN
  4. Tez Türü: Yüksek Lisans
  5. Konular: Kimya, Chemistry
  6. Anahtar Kelimeler: Belirtilmemiş.
  7. Yıl: 2005
  8. Dil: Türkçe
  9. Üniversite: İstanbul Teknik Üniversitesi
  10. Enstitü: Fen Bilimleri Enstitüsü
  11. Ana Bilim Dalı: Kimya Ana Bilim Dalı
  12. Bilim Dalı: Belirtilmemiş.
  13. Sayfa Sayısı: 82

Özet

r^Al £* HjOH CHj- r L/^x“°o,f Benzoin modifiye siklohekzanon-formaldehit reçinesi Benzoinizobutileter modifiye siklohekzanon- formaldehit reçinesi 0_”“rAo^errc^^ ^^ Benzoin modifiye asetofenon-formaldehit reçinesi The tenninal macromolecular radicals which are generated by UV radiation may lead to the formation of a block copolymer. OR1 O I «www^ CCPh H OR1 hv -? OAAAAAA/Ç H O CPh R1=H,alkyl,substituted alkyl In second step, the reaction was carried out in order to convert the polymeric radicals into initiating cations with the aid of oxidizing agents such as iodonium and pyridinium salts. These way block copolymers of monomers which do not polymerize with the same mechanism were prepared. For transformation reactions, macrophotoinitiators with benzoin and chain units were used to induce free radical promoted cationic polymerization of cyclohexene oxide (CHO) in the presence of an onium salt. During the past few years it has been shown that certain pyridinium salts can act directly or indirectly as photoinitiators effective for the cationic and radical polymerization of appropriate monomers. xnO + Py C+ + Py”Shortly; ketonic resin-bound benzoin resins were prepared as common procedure and subsequently resins were used block copolymerization of cyclohexene oxide with the aid of pyridinium salts. Benzoin terminated resins were used as a free radical source. Irradiation of these polymers with pyridinium salts in the presence of cyclohexene oxide as a cationically polymerizable monomer makes it possible to synthesize block copolymers of monomers of different chemical nature. FTIR, 1HNMR and GPC analyses of obtained copolymers indicated; that in the presence of pyridinium salts, benzoin terminated ketonic resins can form the block copolymer of CHO which can be polymerized cationically. xmr^Al £* HjOH CHj- r L/^x“°o,f Benzoin modifiye siklohekzanon-formaldehit reçinesi Benzoinizobutileter modifiye siklohekzanon- formaldehit reçinesi 0_”"rAo^errc^^ ^^ Benzoin modifiye asetofenon-formaldehit reçinesi The tenninal macromolecular radicals which are generated by UV radiation may lead to the formation of a block copolymer. OR1 O I «www^ CCPh H OR1 hv -? OAAAAAA/Ç H O CPh R1=H,alkyl,substituted alkyl In second step, the reaction was carried out in order to convert the polymeric radicals into initiating cations with the aid of oxidizing agents such as iodonium and pyridinium salts. These way block copolymers of monomers which do not polymerize with the same mechanism were prepared. For transformation reactions, macrophotoinitiators with benzoin and chain units were used to induce free radical promoted cationic polymerization of cyclohexene oxide (CHO) in the presence of an onium salt. During the past few years it has been shown that certain pyridinium salts can act directly or indirectly as photoinitiators effective for the cationic and radical polymerization of appropriate monomers. xn

Özet (Çeviri)

O + Py C+ + Py“ Shortly; ketonic resin-bound benzoin resins were prepared as common procedure and subsequently resins were used block copolymerization of cyclohexene oxide with the aid of pyridinium salts. Benzoin terminated resins were used as a free radical source. Irradiation of these polymers with pyridinium salts in the presence of cyclohexene oxide as a cationically polymerizable monomer makes it possible to synthesize block copolymers of monomers of different chemical nature. FTIR, 1HNMR and GPC analyses of obtained copolymers indicated; that in the presence of pyridinium salts, benzoin terminated ketonic resins can form the block copolymer of CHO which can be polymerized cationically. xmr^Al £* HjOH CHj- r L/^x ”°o,f Benzoin modifiye siklohekzanon-formaldehit reçinesi Benzoinizobutileter modifiye siklohekzanon- formaldehit reçinesi 0_“”rAo^errc^^ ^^ Benzoin modifiye asetofenon-formaldehit reçinesi The tenninal macromolecular radicals which are generated by UV radiation may lead to the formation of a block copolymer. OR1 O I «www^ CCPh H OR1 hv -? OAAAAAA/Ç H O CPh R1=H,alkyl,substituted alkyl In second step, the reaction was carried out in order to convert the polymeric radicals into initiating cations with the aid of oxidizing agents such as iodonium and pyridinium salts. These way block copolymers of monomers which do not polymerize with the same mechanism were prepared. For transformation reactions, macrophotoinitiators with benzoin and chain units were used to induce free radical promoted cationic polymerization of cyclohexene oxide (CHO) in the presence of an onium salt. During the past few years it has been shown that certain pyridinium salts can act directly or indirectly as photoinitiators effective for the cationic and radical polymerization of appropriate monomers. xnO + Py C+ + Py" Shortly; ketonic resin-bound benzoin resins were prepared as common procedure and subsequently resins were used block copolymerization of cyclohexene oxide with the aid of pyridinium salts. Benzoin terminated resins were used as a free radical source. Irradiation of these polymers with pyridinium salts in the presence of cyclohexene oxide as a cationically polymerizable monomer makes it possible to synthesize block copolymers of monomers of different chemical nature. FTIR, 1HNMR and GPC analyses of obtained copolymers indicated; that in the presence of pyridinium salts, benzoin terminated ketonic resins can form the block copolymer of CHO which can be polymerized cationically. xm

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