Article
  • Charaeterization of Hydroxyl Terminated Polybutadiene-Isophorone Diisoeyanate Polyurethane Network(1)
  • Park BY, Maeng KS, Lee JW, Yeo JK
  • Hydroxyl Terminated Polybutadiene-Isophorone Diisocyanate Polyurethane의 특성(1)
  • 박보영, 맹기석, 이준웅, 여종기
Abstract
The rubber elasticity characteristics of polyurethane network based on hydroxyl terminated polybutadiene(HTPB)-isophorone diisocyanate(IPDI) were investigated. Both sol-gel analyses and solvent swollen compression modulus data were used to evaluate the crosslink density through the variation of NCO/OH equivalent ratio. The density of elastically effective network chains calculated with swollen compression modulus data at 25℃ were 16.788×10-9 L0S0/D2V0N (mole/cm3) for gel polymer and 16.788×10-9 L0S0/D2 (mole/cm3) for sol-gel polymer, respectively. The polymer-solvent interaction parameters(χ1) between the present elastomer and solvents like xylene, toluene, chloroform and benzene were evaluated at 25℃. The logarithm of the equilibrium volume fraction (V2e'') in gel polymer, which was in accordance with the prediction of the Flory-Noggins schema. The effective network chain lengths (Me) of these elastomers at NCO/OH equivalent ratio=0.95-1.10 were 8,000-12,000(gr/mole).

Keywords:

  • Polymer(Korea) 폴리머
  • Frequency : Bimonthly(odd)
    ISSN 0379-153X(Print)
    ISSN 2234-8077(Online)
    Abbr. Polym. Korea
  • 2023 Impact Factor : 0.4
  • Indexed in SCIE

This Article

  • 1985; 9(1): 59-67

    Published online Feb 25, 1985

  • 10.7317/pk.
  • Received on Nov 30, -0001
  • Revised on Nov 30, -0001
  • Accepted on Nov 30, -0001

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