Premium
Sulphur‐containing polyacrylates. III: UV‐induced copolymerization of methyl methacrylate with some dimethacrylates containing ether or thioether linkage
Author(s) -
Andrzejewska Ewa
Publication year - 1991
Publication title -
polymer international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.592
H-Index - 105
eISSN - 1097-0126
pISSN - 0959-8103
DOI - 10.1002/pi.4990240309
Subject(s) - comonomer , copolymer , polymer chemistry , methyl methacrylate , reactivity (psychology) , thioether , methacrylate , ether , materials science , chemistry , organic chemistry , polymer , medicine , alternative medicine , pathology
The UV‐induced copolymerization of methyl methacrylate (MM) with 2,2′‐thiobisethanol dimethacrylate (TEDM) and MM with 2,2′‐oxybisethanol dimethacrylate (OEDM) was investigated for a wide range of the diester content (6‐80 mol%) in the initial mixture. The influence of the feed composition on the course of copolymerization was determined. It was found that there exists a minimum on the plot of maximum yield of soluble copolymer versus diester content at a diester content of 30 mol%. The total copolymer yields were lower in the case of mixtures containing TEDM comonomer. Determination of the reactivity ratios gave the following values: for MM + TEDM r a = 0·21, r b = 4·59 and for MM + OEDM r a = 0·55. r b = 4·42. A possible explanation of the results obtained is discussed.