Isotactic Polypropylene
Tacticity refers to the relative orientation of each methyl group to the neighboring methyl groups affecting local chain symmetry which affects crystallization and packing. Each methyl group takes up space and constrains backbone bending. Isotactic refers to methyl groups on one side only; atactic refers to random location of the methyl groups along the chain backbone and syndiotactic refers to methyl groups on alternate sides of the chain backbone. -CH2-CH - CH2- CH - CH2 - CH - CH2 – CH -CH2 – CH - CH2 - CH - CH3 CH3 CH3 CH3 CH3 CH3
Recent US Patents
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Recent Journal Articles
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Review Articles
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Editor's Notes
As the literature is reviewed, and items of interest concerning this topic are found. These may be added in an abbreviated form with the reference. Readers and contributors are invited to add their own notes. Contributors may add them directly and other readers can simply send their notes to the editor, Roger Corneliussen at rcorneliussen@4spe.org. He may edit and add them to this page at his discretion.