Based on the X-ray scattering intensity theory and using the atomic scattering factorapproximate expression,the correction factors for three main crystalline peaks and an amorphouspeak of Nylon-1010 were calculated an...Based on the X-ray scattering intensity theory and using the atomic scattering factorapproximate expression,the correction factors for three main crystalline peaks and an amorphouspeak of Nylon-1010 were calculated and the formula of degree of crystallinity of Nylon-1010 wasderived by graphic multipeak resolution method. The results calculated are compatible with the density measurement and calorimetry.展开更多
The kineties of non-isothermal crystallization of Nylon-1010 has been investigated by using differential scanning calorimetry(DSC), DSC curves were obtained under cooling rate(R): 2. 5, 5, 10, 20, 40K/min. Applying Ma...The kineties of non-isothermal crystallization of Nylon-1010 has been investigated by using differential scanning calorimetry(DSC), DSC curves were obtained under cooling rate(R): 2. 5, 5, 10, 20, 40K/min. Applying Mandelkern and Ziabicki theories, the values of the Z kinetic parameter and G the kinetic crystalllzab- ility have been determined. Expenents of Avrami obtained in this work decrease with increase of cooling rate and then level off. The experimental results show disagreements with the Ozawa equation.展开更多
From Wide-Angle X-ray Scattering (WAXS) pattern of uniaxially orientated fibers, the crystal structure of Nylon-1010 was determined. The Nylon-1010 crystallizes in the triclinic system, with lattice dimensions: a=4.9A...From Wide-Angle X-ray Scattering (WAXS) pattern of uniaxially orientated fibers, the crystal structure of Nylon-1010 was determined. The Nylon-1010 crystallizes in the triclinic system, with lattice dimensions: a=4.9A, b=5.4A, c=27.8, α=49 °, β=77 °,γ=63.5 °, the unit cell contains one monomeric unit and the space group is P. The degree of crystallinity of polymer was deter mined as about 60%, using Ruland's method.The structures of Nylon-1010 with different draw ratio have been investigated by using Small-Angle X-ray Scattering (SAXS). The results indicate that the draw ratio of samples has a significant effect on microstructure of Nylon-1010. The long period and thickness of amorphous layer obviously increase but the invariant, average lameUar and interphase zone show almost independent of draw ratio, long period increases because amorphous layer increases with draw ratio. The electron density fluctuation values increased with draw ratio, but inner surface O_s is drecreased.展开更多
The structures of Nylon-1010 with different draw ratios have been investigated by using Small-Angle X-ray Scattering(SAXS).It is shown that by using a simple geometrical construction the following structure parameters...The structures of Nylon-1010 with different draw ratios have been investigated by using Small-Angle X-ray Scattering(SAXS).It is shown that by using a simple geometrical construction the following structure parameters can be directly derived from the correlation function,the long period(L),the thickness of the crystal amorphous interphase(dtr),the lamellar thickness(do),the“invariant”(Q),the specific inner surface(Os), and the electron density difference between the core of the crystallites and the amorphous matrix(η_ε-η_ω)。展开更多
The structure of aggregation state and isothermal crystallization behavior of Nylon-1010 have been studied by WAXD, DSE, Variance-Range Function and density measurement. The results show that crystallization of Nylon-...The structure of aggregation state and isothermal crystallization behavior of Nylon-1010 have been studied by WAXD, DSE, Variance-Range Function and density measurement. The results show that crystallization of Nylon-1010 has the most suitable annealing temperature, the crystals of the Nxlon-1010 are two-dimension heterogeneous nucleation. Both low treatment temperature and high crystallization te, temperature are disadvantageous for Nylon-1010 crystal growth.展开更多
基金This project was supported by the National Natural Science Foundation of China and the National Basic Research Project Macromolecular Condensed State.
文摘Based on the X-ray scattering intensity theory and using the atomic scattering factorapproximate expression,the correction factors for three main crystalline peaks and an amorphouspeak of Nylon-1010 were calculated and the formula of degree of crystallinity of Nylon-1010 wasderived by graphic multipeak resolution method. The results calculated are compatible with the density measurement and calorimetry.
文摘The kineties of non-isothermal crystallization of Nylon-1010 has been investigated by using differential scanning calorimetry(DSC), DSC curves were obtained under cooling rate(R): 2. 5, 5, 10, 20, 40K/min. Applying Mandelkern and Ziabicki theories, the values of the Z kinetic parameter and G the kinetic crystalllzab- ility have been determined. Expenents of Avrami obtained in this work decrease with increase of cooling rate and then level off. The experimental results show disagreements with the Ozawa equation.
文摘From Wide-Angle X-ray Scattering (WAXS) pattern of uniaxially orientated fibers, the crystal structure of Nylon-1010 was determined. The Nylon-1010 crystallizes in the triclinic system, with lattice dimensions: a=4.9A, b=5.4A, c=27.8, α=49 °, β=77 °,γ=63.5 °, the unit cell contains one monomeric unit and the space group is P. The degree of crystallinity of polymer was deter mined as about 60%, using Ruland's method.The structures of Nylon-1010 with different draw ratio have been investigated by using Small-Angle X-ray Scattering (SAXS). The results indicate that the draw ratio of samples has a significant effect on microstructure of Nylon-1010. The long period and thickness of amorphous layer obviously increase but the invariant, average lameUar and interphase zone show almost independent of draw ratio, long period increases because amorphous layer increases with draw ratio. The electron density fluctuation values increased with draw ratio, but inner surface O_s is drecreased.
文摘The structures of Nylon-1010 with different draw ratios have been investigated by using Small-Angle X-ray Scattering(SAXS).It is shown that by using a simple geometrical construction the following structure parameters can be directly derived from the correlation function,the long period(L),the thickness of the crystal amorphous interphase(dtr),the lamellar thickness(do),the“invariant”(Q),the specific inner surface(Os), and the electron density difference between the core of the crystallites and the amorphous matrix(η_ε-η_ω)。
文摘The structure of aggregation state and isothermal crystallization behavior of Nylon-1010 have been studied by WAXD, DSE, Variance-Range Function and density measurement. The results show that crystallization of Nylon-1010 has the most suitable annealing temperature, the crystals of the Nxlon-1010 are two-dimension heterogeneous nucleation. Both low treatment temperature and high crystallization te, temperature are disadvantageous for Nylon-1010 crystal growth.
