Definition and proper usage of the various components in light scattering

Gouda, J. H.; Prins, W.

doi:10.1002/pol.1970.160081115

Cited by 6 publications

(2 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The corresponding crystallinities are 45. 8 and 50.5% at 25°C. These are determined by using amorphous and crystalline densities of 0.852 and 1.00 g/cm3.…”

Section: Introductionmentioning

confidence: 92%

Dynamic light scattering of polyethylene. II. Results and interpretation

Hashimoto

Prud’homme

Stein

1973

J. Polym. Sci. Polym. Phys. Ed.

View full text Add to dashboard Cite

show abstract

“…The corresponding crystallinities are 45. 8 and 50.5% at 25°C. These are determined by using amorphous and crystalline densities of 0.852 and 1.00 g/cm3.…”

Section: Introductionmentioning

confidence: 92%

Dynamic light scattering of polyethylene. II. Results and interpretation

Hashimoto

Prud’homme

Stein

1973

J. Polym. Sci. Polym. Phys. Ed.

View full text Add to dashboard Cite

show abstract

“…Since the principal optical axis in the polyethylene crystal coincides q(cos @,a,y)dy sin BdPda For the undeformed spherulite, the density distribution function N(e',-(P',r) may be assumed to be uniform, independent of angles 8' and 4' and of position r within the spherulite. For the deformed spherulite it is given by N(~',c#J',T) = (3Wo/Sr2)(1 + AF) (7) where Wo is a normalization constant [see eqs. (1) and ( 2 ) in Part 111.…”

Section: Analtyical Calculation Of Scattering From a Deformed Spherulitementioning

confidence: 99%

Crystal orientation in a semicrystalline polymer in relation to deformation of polymer spherulites. III. Small‐angle light scattering

Nomura

Matsuo

Kawai

1974

J. Polym. Sci. Polym. Phys. Ed.

View full text Add to dashboard Cite

Small‐angle polarized light scattering from a deformed three‐dimensional spherulite is formulated on the basis of the deformation model proposed in Part II of this series. The intensity distribution of scattered light is discussed chiefly for the cross‐polarization condition, the so‐called Hv polarization, as a function of elongation of the spherulite. In the undeformed state, the scattered intensity distribution forms the typical fourleaf clover pattern, and the intensity decreases with increasing fraction of crystals oriented randomly (type R crystals) within the crystal lamellae of the spherulites. In a system composed of type R crystals and folded‐chain crystals (type B crystals) within the lamellae, the four‐leaf pattern moves to the horizontal zone near the equator with increasing elongation of the spherulite, and, simultaneously, extends to some extent to the vertical zone near the meridional direction as a parameter measuring the ease of lamellar untwisting increases. In a system composed, in addition to type R and type B crystals, of crystals transformed from type B to type Ca and type Cr due to tilting and unfolding of polymer chains, respectively, within the crystal lamellae an eight‐leaf pattern appears, even at small elongation up to about 30%. Each lobe of the eight‐leaf pattern undergoes a characteristic change with increasing elongation. In both systems, the scattered intensity increases with sharpening of orientation distribution of crystals within the crystal lamellae.

show abstract

Physico-Chemical Approaches to the Measurement of Anisotropy

Stein¹,

Wilkes²

1975

Structure and Properties of Oriented Polymers

View full text Add to dashboard Cite

Definition and proper usage of the various components in light scattering

Cited by 6 publications

References 5 publications

Dynamic light scattering of polyethylene. II. Results and interpretation

Dynamic light scattering of polyethylene. II. Results and interpretation

Crystal orientation in a semicrystalline polymer in relation to deformation of polymer spherulites. III. Small‐angle light scattering

Physico-Chemical Approaches to the Measurement of Anisotropy

Contact Info

Product

Resources

About