Microphase separation and crystallization of crystalline-amorphous type block copolymer—8. Calculation of folding number in the crystalline domain

✍ Scribed by Satoshi Ishikawa

• Publisher: Elsevier Science
• Year: 1995
• Tongue: English
• Weight: 460 KB
• Volume: 31
• Category: Article
• ISSN: 0014-3057
• DOI: 10.1016/0014-3057(95)00047-x

✦ Synopsis

The folding number of poly(tetrahydrofuran) (PTHF) crystallites in a poly(tetrahydrofuranb-isoprene) block copolymer was calculated from the degree of polymerizations, densities, degree of crystallinity, and domain sizes. The crystallites of outer PTHF domain consist of crystallites with foldings bit not f&Bed micelles. The calculated folding number (n -1) based on the data for the polyisoprene IPIP) and PTHF domains were 22.6 and 27.6. resoectivelv. The calculated PIP and PTHF domain sizes has& on n values were not equal to the e$e&nentalhata.

The experimental densities of PIP and amorphous PTHF are not equal to the reference values because the microphase separated structure is not in an equilibrium state.