CRYSTAL-STRUCTURE AND THERMODYNAMIC PARAMETERS OF NYLON-1010

摘要: WAXD, SAXS, FTIR, DSC and density techniques have been used to investigate the crystal structure, rho(c), amorphous rho(a), equilibrium heat of fusion DELTAH(m)degrees melting temperature T(m)degrees. By extrapolating straight lines in FTIR absorbance against plot zero intensity, rho(c) rho(a) were estimated be 1.098 1.003 g/cm3 respectively. The obtained was too low value. From X-ray diffraction patterns uniaxially oriented fibres, structure Nylon-1010 determined. crystallized triclinic system, with lattice dimensions: a = 4.9 angstrom, b 5.4 c 27.8 alpha 49-degrees, beta 77-degrees, gamma 63.5-degrees. unit cell contained one monomeric unit, space group P1BAR, correct value 1.135 g/cm3. degree crystallinity polymer determined as about 60% (at RT) using Ruland's method. SAXS has crystalline lamellar thickness, long period, transition zone, specific inner surface electron difference between regions for Nylon-1010. analysis data based upon one-dimensional electron-density correlation function. 244.0 J/g by extrapolation volume semicrystalline specimens completely condition (V(sp)c 1/rho(c)). Owing ease recrystallization melt-crystallized specimens, well-known Hoffman's T(m)-T(c) method failed determining T(m)degrees Kamide double adopted. so 487 K.