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In this study, a fast and convenient method that can characterize the molecular weight (MW) and its distribution (PDI) of polyamide 1012 after the solid‐state polymerization (SSP) was proposed with the rheological technique. Conventionally, polyamides have to be chemically modified to become soluble in an organic solvent suitable for the Gel Permeation Chromatography (GPC) measurement. Herein, to...
Isothermal crystallization of isotactic polypropylene (iPP)/organic montmorillonite (OMMT) binary composite under shear field was investigated by in situ polarized optical microscopy, rheometry and transmission electron microscopy. When shear strain was small, shear flow could enhance the crystallization of iPP, and the crystallizing entity was spherulitic in iPP/OMMT composite in which the OMMT content...
A systematic investigation on the origin of the haze of LDPE blown films was conducted, aiming to correlate the film haze with the molecular architecture and melt rheological properties. First of all, the haze measurement indicated that the surface haze, rather than the bulk haze, is the dominating factor for the total haze of the investigated films. No spherulitic crystals or other superstructures...
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