Abstract
Hv Light-scattering patterns from film specimens of relatively low density polyethylenes differ from the so-called “four leaf clover pattern” which is often found in the case of a well-grown spherulitic texture of polyethylene and can be derived from Stein’s formulation of the scattered pattern. The pattern is some modifications removed from the “four leaf clover” pattern so as to have a rather long leafstalk, and may be called “four tennis rackets” arranged orthogonally.Some modifications of Stein’s formulation for an isolated spherulite of a rather simple and regular anisotropy are proposed by taking the distribution of the size of spherulites into account, taking the spherulite anisotropy, (αr−αt), as a function of distance from the center of the spherulite, and further making the boundary of the spherulite less clear.The former two modifications do not give any essential change in the scattering pattern from that predicted by the Stein’s formulation, except for some shifts of the scattering angle at maximum intensity, while the latter modification gives the extension of the logarithmic contour plot of scattered intensity to lower scattering angles, and confirms the pattern of the “four tennis rackets.”In addition, a modification of the spherulitic crystalline texture to a sheaf-like texture by using a two-dimensional symmetric sector model also gives an extension of the logarithmic contour plot to lower scattering angles, even showing the strongest scattered intensity at the lower angles when the sector angle is taken as less than 50°.
Similar content being viewed by others
Article PDF
References
P. Debye and A. M. Bueche, J. Appl. Phys., 20, 518 (1949).
R. S. Stein and M. B. Rhodes, J. Appl. Phys., 31, 1873 (1960).
R. S. Stein and P. R. Wilson, J. Appl. Phys., 33, 1914 (1962).
R. S. Stein, P. R. Wilson, and S. N. Stidham, J. Appl. Phys., 34, 46 (1963).
I. Harris, J. Polym. Sci., 8, 353 (1952).
J. L. Mattews, H. S. Peiser, and R. B. Richards, Acta Cryst., 2, 85 (1949).
R. Chiang and P. J. Flory, J. Am. Chem. Soc., 83, 2857 (1961).
S. B. Clough, J. J. van Aartsen, and R. S. Stein, J. Appl. Phys., 36, 3072 (1965).
R. J. Samuels, J. Polym. Sci., Part C, 13, 37 (1966).
R. J. Samuels, J. Polym. Sci., Part A, 3, 1741 (1965).
R.S. Stein, S.N. Stidham, and P.R. Wilson, ONR Technical Report, No. 36, Department of Chemistry, University of Massachusetts, Amherst, Mass., 1961.
C. Picot, R. S. Stein, M. Motegi, and H. Kawai, to be submitted to J. Polym. Sci., Part A–2.
R. S. Stein and W. Chu, private communications.
R. S. Stein, P. Erhardt, J. J. van Aartsen, S. Clough, and M. Rhodes, J. Polym. Sci., Part C, 13, 1 (1966).
M. Moritani, H. Kawai, and A. Utsuo, to be submitted to Polym. J.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Motegi, M., Oda, T., Moritani, M. et al. Light-Scattering Patterns from Polyethylene Films in Relation to Spherulitic Crystalline Texture. Polym J 1, 209–221 (1970). https://doi.org/10.1295/polymj.1.209
Issue Date:
DOI: https://doi.org/10.1295/polymj.1.209
Keywords
This article is cited by
-
Morphology influence on the permeation properties of styrene and polystyrene modified polyethylene membranes
Colloid & Polymer Science (1989)