Self‐nucleation and enhanced nucleation of polymers. Definition of a convenient calorimetric “efficiency scale” and evaluation of nucleating additives in isotactic polypropylene (α phase)

Journal of Polymer Science, Part B: Polymer Physics - Tập 31 Số 10 - Trang 1395-1405 - 1993
B. Fillon1, Bernard Lotz1, A. Thierry1, J. C. Wittmann1
1Institut Charles Sadron (CRM-EAHP), CNRS-ULP Strasbourg, 6, Rue Boussingault, 67083 Strasbourg-Cedex France

Tóm tắt

AbstractA simple, convenient and reliable calorimetric efficiency scale is proposed for the evaluation of nucleating additives for polymers. The scale is based on conventional differential scanning calorimetry cooling runs and makes use of a crystallization range determined in self‐nucleation experiments. It can be correlated with spherulite sizes, and indicates the potential range of improvement of nucleating additives. Typical nucleating agents for isotactic polypropylene are evaluated; at best they rate at 60 to ca. 70% on this efficiency scale. © 1993 John Wiley & Sons, Inc.

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Tài liệu tham khảo

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Thông tin xuất bản

Journal of Polymer Science, Part B: Polymer Physics

Tập 31 Số 10

1395-1405

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