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LLDPE/LDPE blends. II. Viscoelastic properties in solid state

✍ Scribed by Masayuki Yamaguchi; Shigehiko Abe

Publisher
John Wiley and Sons
Year
1999
Tongue
English
Weight
138 KB
Volume
74
Category
Article
ISSN
0021-8995

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✦ Synopsis

The effect of a small addition of a low density polyethylene into a linear low density polyethylene (ethylene-1-hexene copolymer; density ϭ 900 kg m Ϫ3 ) on the linear and nonlinear viscoelastic properties in the solid state were studied. It was found that the addition of the low density polyethylene leads to a well-organized crystalline structure. Consequently, the location of ␣ relaxation process is shifted to higher temperature or longer time. Furthermore, the mechanical nonlinearity of the blend is found to be more prominent than that of the pure linear low density polyethylene.

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The properties of low-density polyethylene (LDPE) and its blend with linear low-density polyethylene LDPE : LLDPE (75 : 25) modified with varying concentrations of dicumyl peroxide (DCP) were compared. Chemical modification was carried out in a Brabender plasticorder under set conditions of temperat