The Effect Of Polymer Structure And Processing Conditions On Processability and Mechanical Properties Of HDPE Blown Film
| Title |
The Effect Of Polymer Structure And Processing Conditions On Processability and Mechanical Properties Of HDPE Blown Film |
| Publication year |
2002 |
| Language |
English |
| Author |
Eggen, Svein |
| Co-Authors |
Helland, Irene (Norner) - Nilsen, Jorunn (Norner) |
| Source |
PPS, Portugal 16.-20. juni, 2002 |
| Abstract |
Poster. It is well known that the performance of a polymer in the film blowing process is strongly influenced by the polymer structure. This influence is further complicated by interactions with the different elements of the film blowing process itself, resulting in a complex correlation between polymer structure and film properties To investigate this correlation further a detailed film blowing study has been performed, varying both the polymer structure and the processing conditions. The resulting data set has been interpreted by means of multivariate analysis. Changes in polymer structure are determined by the catalyst and the process conditions. The aim of this work has been to study the effect of changes in polymer structure within a given MFR range. Effects of the film blowing process have also been investigated by a series of experiments planned using an experimental design. Significant differences in processability and final properties were observed for polymer resins with approximately the same MFR. These variations are however consistent with rheological properties as seen by dynamic spectroscopy. Variations in mechanical properties on the same level as seen by structural variations could also be concluded by varying the processing conditions on the blown film line. |