Copolymerization of phenylisocyanate and ϵ‐caprolactone with rare earth chloride systems | Zendy

Ni Xufeng | Zendy; Xu Xiaoyan | Zendy; Shen Zhiquan | Zendy

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Copolymerization of phenylisocyanate and ϵ‐caprolactone with rare earth chloride systems

Author(s) -

Ni Xufeng,

Xu Xiaoyan,

Shen Zhiquan

Publication year - 2006

Publication title -

journal of applied polymer science

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.575

H-Index - 166

eISSN - 1097-4628

pISSN - 0021-8995

DOI - 10.1002/app.24931

Subject(s) - copolymer , monomer , phenylisocyanate , polymer chemistry , polymerization , epichlorohydrin , materials science , chloride , lanthanide , vinyl chloride , caprolactone , bulk polymerization , epoxide , chemistry , catalysis , organic chemistry , radical polymerization , polymer , ion

A copolymer of phenylisocyanate (PhNCO) and ε‐caprolactone (CL) was synthesized by the rare earth chloride systems lanthanide chloride isopropanol complex (LnCl 3 ·3iPrOH) and propylene epoxide (PO). Polymerization conditions were investigated, such as lanthanides, reaction temperature, monomer feed ratio, La/PO molar ratio, and aging time of catalyst. The optimum conditions were: LaCl 3 preferable, [PhNCO]/[CL] in feed = 1 : 1 (molar ratio), 30°C, [monomer]/[La] = 200, [PO]/[La] = 20, aging 15 min, polymerization in bulk for 6 h. Under such conditions the copolymer obtained had 39 mol % PhNCO with a 78.2% yield, M n = 20.3 × 10 3 , and M w / M n = 1.60. The copolymers were characterized by GPC, TGA, 1 H‐NMR, and 13 C‐NMR, and the results showed that the copolymer obtained had a blocky structure with long sequences of each monomer unit. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 103: 2135–2140, 2007

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