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Journal of Polymer Research
Erschienen in: Journal of Polymer Research 11/2018

01.11.2018 | ORIGINAL PAPER

Preparation of a star-type telechelic macrophotoinitiator of poly(ε-caprolactone) and its use in photoinduced free radical promoted cationic polymerization

verfasst von: Zafer Uyar, Adile Öncel

Erschienen in: Journal of Polymer Research | Ausgabe 11/2018

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Abstract

A novel and well-defined four-arm star-type telechelic macrophotoinitiator of poly(ε-caprolactone) carrying benzoin photofunctional end-groups (PCL-BPI)4 was successfully synthesized by the combination of ring opening polymerization (ROP) and click chemistry techniques. First, hydroxyl end-functionalized four-arm (PCL-OH)4 was synthesized by ROP of ε-caprolactone (ε-CL) with pentaerythritol initiator. Then, the hydroxyl groups at the chain ends were converted to terminal alkyne groups by the condensation reaction between (PCL-OH)4 and 4-pentynoic acid to give an alkyne end-functionalized four-arm poly(ε-caprolactone), (PCL-alkyne)4, as the first click couple compound. Separately, an azido end-functionalized benzoin photoinitiator (BPI-N3) was prepared in two steps to be used as the other click couple compound. (PCL-alkyne)4 and BPI-N3 were coupled via “click chemistry” to prepare a well-defined four-arm star-type telechelic macrophotoinitiator, (PCL-BPI)4. In addition, the obtained (PCL-BPI)4 macrophotoinitiator was used in the photoinitiated free radical promoted cationic polymerization of cyclohexene oxide (CHO) to produce an (AB)4-type star shaped block copolymer, (PCL-PCHO)4. All the polymers prepared were characterized by different spectral and analytical methods and their thermal behaviors were investigated.
Vorheriger Artikel Effect of bis[2-(methacryloyloxy)ethyl] phosphate as a crosslinker on poly(AAm-co-AMPS)/Na-MMT hydrogel nanocomposite as potential adsorbent for dyes: kinetic, isotherm and thermodynamic study
Nächster Artikel Preparation of high temperature resistant Ag/PI/Cu composite nano particles inserted with PI insulating layer

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Metadaten
Titel
Preparation of a star-type telechelic macrophotoinitiator of poly(ε-caprolactone) and its use in photoinduced free radical promoted cationic polymerization
verfasst von
Zafer Uyar
Adile Öncel
Publikationsdatum
01.11.2018
Verlag
Springer Netherlands
Erschienen in
Journal of Polymer Research / Ausgabe 11/2018
Print ISSN: 1022-9760
Elektronische ISSN: 1572-8935
DOI
https://doi.org/10.1007/s10965-018-1638-8

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