An X-Ray Study of Rubber Hydrochloride

Abstract

Abstract The x-ray diagram of rubber hydrochloride is a worthy addition to those of other natural high polymers and derivatives, and its study is a fruitful field for investigating the internal structure of such materials. Various peculiarities have been pointed out which have raised a question as to whether the properties of rubber hydrochloride can be explained on the basis of a chemical structure consisting of long, chlorinated, paraffin chains. These disturbing facts are (1) the effect on the x-ray diagram of the first addition of hydrogen chloride; (2) the failure to secure the theoretical chlorine content; (3) the possibility of vulcanization; (4) the amorphous diagram of balata hydrochloride, and (5) the shortening of the chains compared to normal paraffin chains. A partial departure from the strict formula may, in turn, lead to a colloidal structure which may be essential for such properties as the elasticity shown at higher temperatures and the ability to rack. The interpretation of the x-ray diagram seems to be possible on the basis of such long chains if some deformation from the zig-zag form is permitted to shorten them about 10%.