精密重合・精密合成高分子　ＩＩ　　マクロモノマー型高分子開始剤を用いた星型‐ブロック共重合体のアニオン機構による合成と分子特性

• 寺本 正和

  福井大学工学部材料化学科

• 瀬 和則

  福井大学工学部材料化学科

書誌事項

タイトル別名

• Precision Polymerization and Polymers II. Anionic Synthesis of Star-Block Copolymers with Macroinitiators Prepared from a Macromonomer and Characterization of the Polymers.
• マクロモノマーガタ コウブンシ カイシザイ オ モチイタ ホシガタ ブロック

抄録

(p-Isopropenylphenethyl) poly (α-methylstyrene) macromonomer (PSM) was reacted with potassium mirror at room temperature under high vacuum to yield three macroinitiators (K^+- (PSM) _n^-K⁺, n=1, 2, 4), though difficult to isolate. Isoprene (Is) was anionically polymerized by the three macroinitiators to produce the corresponding three-arms, four-arms, and six-arms star-block copolymers ((PSM) _n-s- (PIs) ₂, n= 1, 2, 4). A main product of the three copolymers was (PSM) ₁-s- (PIs) ₂, having a conversion rate more than 75%. Each star-block copolymer of the three (PSM) _n-s- (PIs) ₂ has narrow distributions of the PIs constituent and molecular weight, and has a newly produced PIs chain having the same molecular weight as those of the other two copolymers. Three samples, SSI-1 (PIs content of 33%), SSI-2 (56%), and SSI-3 (85%), showed the same molecular characteristics mentioned above. Molecular weights of the PIs chains of the three samples increased with the amount of Is monomer used in the polymerization. These results suggest that Is monomer was polymerized by the macroinitiators of K^+- (PSM) _n^-K⁺ via the anionic living mechanism.

収録刊行物

• 高分子論文集

  高分子論文集 54 (12), 930-938, 1997

  公益社団法人 高分子学会

キーワード

• Star-Block Copolymer
• Macroinitiator
• Macromonomer
• (<I>p</I>-Isopropenylphenethyl) poly (α-methylstyrene)
• Polyisoprene
• Potassium Mirror
• Three-Arms Star Polymer
• Anionic Living Polymerization
• Molecular Characterization

詳細情報

• CRID: 1390282681500265856
• NII論文ID: 10003287796
• NII書誌ID: AN00085011
• DOI: 10.1295/koron.54.930
• ISSN: 18815685
• ISSN: 03862186
• ISSN: http://id.crossref.org/issn/03862186
• NDL書誌ID: 4380403
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4380403
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可