Orientation Measurement of Polymers

User Benefits

- XRD enables nondestructive orientation measurement of crystals in polymers such as synthetic fibers. - Measurement by the transmission method, which is necessary for investigation of the degree of orientation, is possible by using a Shimadzu rotational sample stage. - Simple calculation of the degree of orientation is possible by using the orientation calculation software provided with the fiber sample attachment.

Introduction

The crystals of polymers are known to take a preferred orientation in a specific direction and form a fibrous structure when processed by heating, drawing, and rolling. The strength and flexibility of polymer products such as synthetic fibers can be confirmed by investigating their crystal orientation. Moreover, knowledge of the crystal orientation is useful in development to add new functions to resins and films. It is known that crystals also take a preferred orientation in natural wood fiber. Orientation measurement is possible by using a Shimadzu XRD- 6100 or XRD-7000 X-ray diffractometer in combination with the Shimadzu rotational sample stage and fiber sample attachment. This article introduces an example in which an X-ray was irradiated on a sample of packing string by the transmission method, and the degree of crystal orientation was measured during in-plane rotation of the sample to determine the peaks of particular angles.

December 10, 2020 GMT