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Melt strength and film bubble instability of LLDPE/LDPE blends

✍ Scribed by Field, Graham J; Micic, Predrag; Bhattacharya, Sati N

Publisher: John Wiley and Sons
Year: 1999
Tongue: English
Weight: 93 KB
Volume: 48
Category: Article
ISSN: 0959-8103
DOI: 10.1002/(sici)1097-0126(199906)48:6<461::aid-pi169>3.0.co;2-7

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✦ Synopsis

The relevance of measuring the melt strength of low density polyethylene (LDPE), linear low density polyethylene (LLDPE) and their blends to their performance in terms of bubble stability in the ®lm blowing process has been investigated. A good correlation between the melt strength values for two series of LLDPE/LDPE blends and the size of the operating window for stable ®lm bubble formation has been established. Both the macromolecular structure of the parent polymers, and melt morphology play an important role in the performance of these blends in the ®lm blowing process.

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