Skip to main content
padlock icon - secure page this page is secure

Differential scanning calorimetry study of cross‐nucleation between polymorphs in isotactic poly(1‐butene)

The full text article is not available for purchase.

The publisher only permits individual articles to be downloaded by subscribers.


Cross‐nucleation is denoted as the heterogeneous nucleation of a ‘daughter’ polymorph on another pre‐existing (‘parent’) structure of the same substance. Several examples of the phenomenon for semicrystalline polymers have recently been reported. Polarized optical microscopy is commonly used to investigate both the morphology and the kinetics aspects of cross‐nucleation. Hereby, we propose a DSC approach for the quantitative investigation of cross‐nucleation in seeded crystallization. This case study deals with isotactic poly(1‐butene) Form II on Form I nucleation.

Seeds of the trigonal Form I were produced in situ in poly(1‐butene) samples, their amount and characteristic size being varied by appropriate choice of the thermal protocol. DSC isothermal and non‐isothermal crystallization measurements of Form I seeded samples were performed, highlighting a meaningful nucleation effect of the stable polymorph on Form II. As expected, the nucleating efficiency is highly dependent on the specific content of Form I seeds (i.e. the area of Form I spherulites per unit sample volume). Depending on the seeding and crystallization conditions, Form II crystallization is dominated by nucleation either on foreign heterogeneous surfaces or on Form I crystals. The described quantitative approach can be extended to the study of cross‐nucleation in polymorphic systems in which morphological evidence is not sufficiently informative. © 2018 Society of Chemical Industry
No References
No Citations
No Supplementary Data
No Article Media
No Metrics

Document Type: Research Article

Publication date: February 1, 2019

More about this publication?
  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more