English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

By using the modified Flory's equation on the melting of copolymers, the relationships have been investigated between the melting temperature and the composition for the rotational isomeric states models of atactic polypropylene, ethylene/propylene and propylene/ethylene copolymers of (A-B)n and random types. Atactic polypropylene may be treated as a binary copolymer composed of meso and racemi units. For these models, the common characters are found in the Tm vs. composition curves. For models with n=1, the depression of Tm is negligibly small. The larger the n, the larger the Tm depression, approaching to the curves for the random type models. The conformational contribution to the melting point depression of copolymers is correlated with the sequential probability of crystallizable unit in a chain as functions of number and length of sequences of major component units.

Melting point prediction of atactic polypropylene and propylene/ethylene copolymers with (A-B)n type configurations.