کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5206930 | 1382327 | 2011 | 5 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Test MethodSqueeze flow induced crystallization monitoring in polymers Test MethodSqueeze flow induced crystallization monitoring in polymers](/preview/png/5206930.png)
A rheo-optic set-up originally designed for applying a shear strain to the material (CSS450 from Linkam) was used to generate a squeeze flow and follow the subsequent crystallization of the polymer. A polypropylene was used as the test material. The squeeze was achieved using the gap control motor of a hot stage conventionally used for shear measurements. The lubricated squeeze flow ensured a biaxial elongational strain in the sample. The crystallization kinetics is largely enhanced by the squeeze flow which, similarly to shear effects, leads to increase the nucleation. Moreover, x-ray measurements revealed that for our study squeeze flow promotes the formation of β crystalline phase. However, no specific crystalline orientation was obtained.
Journal: Polymer Testing - Volume 30, Issue 7, October 2011, Pages 760-764