On the Viscoelastic Segment Size of Cellulose

• Maeda Ayaka

  Department of polymer science, Graduate school of science, Osaka University

• Inoue Tadashi

  Department of polymer science, Graduate school of science, Osaka University

抄録

Dynamic birefringence and viscoelasticity of cellulose acetate propionate were measured at various temperatures covering a wide frequency region from the rubbery plateau to the glassy zone in order to determine the viscoelastic segment size of cellulose. The complex Young's modulus was separated into two components, R and G components. From the limiting modulus at high frequencies of the R component, molecular weight of viscoelastic segment was determined as 3100. This value is the largest one among amorphous polymers previously determined. Larger dynamic segment size reflects the rigid chain structure of β linked D-glucose units (about 10 glucose units per segment). Number of segments per entanglement strand was also estimated to be 4. Reflecting the small segment number per entanglement strand, most of reorientation of segment (relaxation of stress) was found to be delayed until the terminal flow zone.

収録刊行物

• 日本レオロジー学会誌

  日本レオロジー学会誌 39 (4), 159-163, 2011

  一般社団法人 日本レオロジー学会

キーワード

• Cellulose
• Viscoelastic segment
• Dynamic birefringence
• Stress-Optical rule
• Kuhn segment

詳細情報

• CRID: 1390001205095587968
• NII論文ID: 10030208201
• NII書誌ID: AN00198812
• DOI: 10.1678/rheology.39.159
• ISSN: 21864586
• ISSN: 03871533
• NDL書誌ID: 11245271
• Web Site: http://id.ndl.go.jp/bib/11245271
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I11245271
• Web Site: http://www.jstage.jst.go.jp/article/rheology/39/4/39_4_159/_pdf
• 本文言語コード: en
• データソース種別:
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  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• 抄録ライセンスフラグ: 使用不可