Characterization of network structure of poly(glycidyl azide) elastomers by swelling, solubility and mechanical measurements

Eroglu M. S., Guven O.

POLYMER, cilt.39, sa.5, ss.1173-1176, 1998 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 39 Sayı: 5
  • Basım Tarihi: 1998
  • Doi Numarası: 10.1016/s0032-3861(97)00369-8
  • Dergi Adı: POLYMER
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.1173-1176
  • Anahtar Kelimeler: poly(glycidyl azide) (PGA), glycidyl azide polymer (GAP), swelling, molecular weight between junction points, COMPOSITE
  • Marmara Üniversitesi Adresli: Hayır

Özet

Poly(glycidyl azide) (PGA) networks were prepared by using Desmodur N-100 pluriisocyanate, isophorone diisocyanate (IPDI)/trimethylol propane (TMP), and hexamethylene diisocyanate (HMDI)/(TMP) reactive systems with various NCO/OH reactive group ratios. Swelling tests of these networks were carried out in tetrahydrofuran (THF) at room temperature. The number average molecular weight ((M) over bar(n)) and polymer solvent interaction parameter (chi(l)) of PGA in THF was determined by vapour pressure osmometry (VPO) to be 0.25 for the PGA-THF system at 45 degrees C. The average molecular weights between junction points (M-c) were calculated by using the Flory-Rehner equation. For the networks prepared by three different reaction systems, a linear change of M-c with sol content was observed. (C) 1997 Elsevier Science Ltd. All rights reserved.