ステップ状大変形により衝突させた２液滴の合一過程の観察

• 岡本 健三

  山形大学工学部機能高分子工学科

• 田村 良太

  山形大学工学部機能高分子工学科

• 石川 優

  山形大学工学部機能高分子工学科

書誌事項

タイトル別名

• Observation of Coalescence of Two Polyisobutylene Droplets in Polydimethylsiloxane under Large Step Shear Strain.
• ステップジョウ ダイヘンケイ ニ ヨリ ショウトツ サセタ 2 エキテキ ノ ゴウイツ カテイ ノ カンサツ

抄録

We observed collision and coalescence after application of large step shear strains for two polyisobutylene (PIB) droplets in polydimethylsiloxane (PDMS) matrix using a stereo microscope. When coalescence occurred, interface vanished in an overlapped area of deformed droplets. Then a single droplet recovered to spherical shape. Time necessary for recovery to spherical shape with coalescence was longer than that without coalescence. Coalescence was easy to occur for larger strain and smaller d₀/r ₀, where d₀ and r₀ represent initial distance between centers of droplets and initial droplet radius, respectively. In the case of shape recovery without coalescence, the distance between the centers after shape recovery was smaller than d₀. Time dependence of shape of droplets was similar in both cases with coalescence and without coalescence. Ratio of length of overlap, l_ov', to length of semi major axis, a', in view perpendicular to shear plane determines occurrence of coalescence.

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 30 (1), 45-48, 2002

  一般社団法人 日本レオロジー学会

キーワード

• Coalescence
• Large step shear strain
• Polyisobutylene
• Polydimethylsiloxane

詳細情報

• CRID: 1390282680068463104
• NII論文ID: 10029814080
• NII書誌ID: AN00198812
• DOI: 10.1678/rheology.30.45
• COI: 1:CAS:528:DC%2BD38Xjt1KktL8%3D
• ISSN: 21864586
• ISSN: 03871533
• NDL書誌ID: 6075280
• Web Site: http://hdl.handle.net/10119/7841
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I6075280
• Web Site: http://www.jstage.jst.go.jp/article/rheology/30/1/30_1_45/_pdf
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • IRDB
  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可