As spun isotactic
polypropylene fibers of 2060 Tex and melt flow index (MFI) of 27.84 g/10 min were used.
PP, with thumbs on one side like a comb); Mitsui Chemicals; and Chisso polypropylene, now part of Mitsubishi Chemical.
Bevis, "Injection molding of isotactic
polypropylene," in Polypropylene, Polymer Science and Technology Series, J.
Mechanical Properties of Injection Molded Isotactic
Polypropylene/Roselle Fiber Composites, J.
For both methylene regions, a relative fraction of the isotactic
orientation can be observed.
Triphenylmethyl methacrylate (TrMA) is a unique monomer that forms an isotactic
polymer, PTrMA, even by a radical process, (11) which usually yields atactic or syndiotactic polymers.
We used commercial isotactic
polypropylene (PP) Basel Moplen HP456J as a matrix material.
Key statement: Disclosed is an ethylene-propylene-diene terpolymer having isotactic
polypropylene crystallinity compounded with a blend rubber wherein the terpolymer can be present in an amount effective to improve tack, aged tensile strength retention, fatigue resistance, ozone cracking resistance and reversion resistance.
At earlier stage (1h) of the reaction, molar ratios of isotactic
(mm), atactic (mr), and syndiotactic (rr) pHEMA were 39, 13, and 48 mol%, respectively (Table 1).
In contrast, an isotactic
stereoblock (bottom) polymer has a higher melting point.
configuration) are used to prepare adhesives of the present invention.
Joint Effects of Molecular Structure and Processing History on Specific Nucleation of Isotactic
Polypropylene, Macromolecules, 42, 7413-7417, ISSN 0024-9297