Mattice, "Molecular Origin of Demixing, Prior to Crystallization, of Atactic
Polypropylene/Isotactic Polypropylene Blends upon Cooling from the Melt," J.
In Area 3, cold-crystallization occurs, what means that PLA2003D is not atactic
but crystallizes very slowly.
Mulhaupt, "Determination of plateau moduli and entanglement molecular weights of isotactic, syndiotactic and atactic
polypropylenes synthesized with metallocene catalysts," Macromolecules 1998.
In the same manner, the angles between the transition dipole moment vectors of an absorbing group and the chain axis were determined in polymers such as PMMA , atactic
PSt , poly(styrene-acrylonitrile) , poly(vinyl phenol) , and poly(2,6-dimethyl 1,4-phenylene oxide) .
Resins made with this catalyst have high purity, very little atactic
content, low acidity, and low chloride levels.
From Industrial Polymerisation Wastes to High Valued Material: Interfacial Agents for Polymer Blends and Composites based on Chemically Modified Atactic
2] catalyst to copolymerize atactic
polypropylene (aPP) macromonomer with propylene to produce LCBPP.
The material is modified with a modifier selected from a group including: Atactic
PolyPropylene (APP), Amorphous Poly Alpha Oletin (APOA), Thermoplastic PolyOlefin (TPO), Styrene-Butadiene-Styrene (SBS), Styrene-Ethylene-Butadiene-Styrene (SEBS) and synthetic rubber.
Backbone chemical structure Three structural factors affect the value of Tg in atactic
Neither material contains low-molecular-weight atactic
fractions, making them suitable for pharmaceutical and food applications.
IGI refines, blends, compounds, markets and trades paraffin and synthetic waxes, white oils and petrolatum and atactic
polypropylenes throughout North America and internationally.
Isotactic PP (i-PP) is able to crystallize because of the polymer chains can be packed efficiently to form a semi-crystalline structure, whereas the random arrangement of methyl groups along the polymer chain leads to formation of atactic
, amorphous PP.