On the degree of crystallinity in natural rubber

✍ Scribed by Arlman, J. J. ;Goppel, J. M.

• Publisher: Springer
• Year: 1951
• Tongue: English
• Weight: 307 KB
• Volume: 2
• Category: Article
• ISSN: 0003-6994
• DOI: 10.1007/bf00411969

✦ Synopsis

A r e c e n t t h e o r y , d e v e l o p e d b y Flory, allows t h e degre e of crystallization to be calculated f r o m t h e r m o d y n a m i c a l m e a s u r e m e n t s if c e r t a i n p a r a m eters are p r o p e r l y e v a l u a t e d . Such e v a l u a t i o n is possible b y c o m b i n i n g W i l d s c h u t ' s t h e r m o d y n a m i c a l m e a s u r e m e n t s w i t h t h e X -r a y results p r e s e n t e d in p r e v i o u s p a p e r s t). Thus, t h e average l e n g t h of molecule chains b e t w e e n cross-linkages can be d e r i v e d ; it closely c o r r e s p o n d s to t h e results of s,~elling m e a s u r e m e n t s , carried out b y Gee. O t h e r p a r a m e t e r s are also e v a l u a t e d in a g r e e m e n t w i t h their p h y s i c a l meaning.