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フルテキストURLKJ00004351033.pdf ( 943.6KB ) 公開日 2010-04-19
タイトルReactivities of alkyl N-(4-substituted pheny1) itaconamates in the radical copolymerizations with styrene or methy1 methacrylate
作成者Oishi, Tsutomu
Momoi, Masaaki
Fujimoto, Minoru
Kimura, Tadashi
作成者ヨミオオイシ, ツトム
モモイ, マサアキ
フジモト, ミノル
キムラ, タダシ
作成者別表記大石, 勉
百衣, 正昭
藤本, 稔
木村, 規
作成者所属山口大学工学部
内容記述(抄録等)The radical copolymerizations of alkyl N-(4-substituted phenyl) itaconamates (ARPhIA) (alkyl group: X, I, X=CH_3; II, X=C_2H_5; III, X=n-C_3H_7; IV, X=n-C_4H_9; nuclearsubstituent: R, a, R=OCH_3; b, R=CH_3; c, R=H; d, R=Cl; e, R=COOC_2H_5) (M_1) [chemical formula] with styrene (ST) (M_2), methyl methacrylate (MMA) (M_2), or vinyl acetate (VAc) (M_2) were carried out at 60℃, using azobisisobutyronitrile as an initiator in tetrahydrofuran in order to clarify the polymerization behavior of ARPhIA and the substituent effects on the copolymerizations. From the results obtained, the monomer reactivity ratios (r_1, r_2) and the Q_1 and e_1 values were determined. It was found that the relative reactivities (1/r_2) of itaconamates I, II, and III toward the attack of a polystyryl radical could be correlated not only by the polar substituent constants (σ) of the nuclear-substituents, R, but also by the resonance substituent constants (E_R) in the modified Hammett equation: log(1/r_2)=ρσ+γE_R. According to the above equation, the ρ and γ values were obtained as ρ=0.16, γ=2.0 in the itaconamate I and ST; ρ=0.09, γ=1.5 in the itaconamate II and ST; ρ=0.13, γ=1.5 in the itaconamate III and ST system. While, the ρ and γ values were obtained as ρ=0, γ=0.5 in the itaconamate II and MMA; ρ=-0.06, γ=0.4 in the itaconamate III and MMA system; i.e., the relative reactivities of ARPhIA toward the attack by a poly (MMA) radical could be slightly affected both by the polar character of the nuclear-substituent, R, and by the resonance character. The radical reactivities were found to be also affected by the ester groups, X. It was observed, however, that both the Q_1 and e_1 values for ARPhIA were independent of Hammett's σ-substituent constants and that the number-average molecular weights (M_n) of the ARPhIA copolymer were not affected by the σ-constants or E_R-constants. M_n for the copolymer was found to be as 1.1×10^4-1.6×10^4.
本文言語eng
主題工学
資料タイプtext
ファイル形式application/pdf
出版者山口大学工学部
出版者ヨミヤマグチ ダイガク コウガクブ
NII資料タイプ紀要論文
ISSN0386-3433
NCIDAA0086073X
学内刊行物(紀要等)Technology reports of the Yamaguchi University
掲載誌名Technology reports of the Yamaguchi University
3
1
開始ページ15
終了ページ32
発行日1982-12
著者版/出版社版出版社版
備考本文データは国立情報学研究所において電子化したものである
リポジトリIDKJ00004351033
地域区分山口大学
URIhttp://www.lib.yamaguchi-u.ac.jp/yunoca/handle/KJ00004351033