AN INVESTIGATION ON FOLD STRUCTURE IN POLYETHYLENE LAMELLA WITH DIAMOND LATTICE MODEL*
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AN INVESTIGATION ON FOLD STRUCTURE IN POLYETHYLENE LAMELLA WITH DIAMOND LATTICE MODEL*
AN INVESTIGATION ON FOLD STRUCTURE IN POLYETHYLENE LAMELLA WITH DIAMOND LATTICE MODEL*
高分子科学(英文版)1998年16卷第2期 页码:133-141
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纸质出版:1998-06-20
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ZHOU Zhiping, YAN Deyue. AN INVESTIGATION ON FOLD STRUCTURE IN POLYETHYLENE LAMELLA WITH DIAMOND LATTICE MODEL*[J]. 高分子科学(英文版), 1998,16(2):133-141.
ZHOU Zhiping, YAN Deyue. AN INVESTIGATION ON FOLD STRUCTURE IN POLYETHYLENE LAMELLA WITH DIAMOND LATTICE MODEL*[J]. 1998, 16(2): 133-141.
ZHOU Zhiping, YAN Deyue. AN INVESTIGATION ON FOLD STRUCTURE IN POLYETHYLENE LAMELLA WITH DIAMOND LATTICE MODEL*[J]. 高分子科学(英文版), 1998,16(2):133-141.DOI:
ZHOU Zhiping, YAN Deyue. AN INVESTIGATION ON FOLD STRUCTURE IN POLYETHYLENE LAMELLA WITH DIAMOND LATTICE MODEL*[J]. 1998, 16(2): 133-141.DOI:
AN INVESTIGATION ON FOLD STRUCTURE IN POLYETHYLENE LAMELLA WITH DIAMOND LATTICE MODEL*
Based on perfect rotational isomeric state model of polyethylene chainwithout any torsional stretch or chain twisting
the separation distance between a zig-zagsegment and its re-entry ones in lamella has been investigated. The intervals were definedby a pair of quantum numbers (kx
ky) according to the formula: D=0.153/(31/2)((8kx2+16ly2)1/2)(nm)kx and ky are integers just as the lattice coordinates on the respective & and α- axes ofthe crystal lattices for polyethylene. The crystal lattices of polyethylene can be accessible by the re-entry stems
whether it is adjacent fold or not.Conformations
until 14-bond fold
of the fold part were investigated.The sequence TTGTTG'G'TTGGTTG possesses the lowest average conformation energy per bond for (110) fold
and TGTTG'G'TTTG' for (020) fold.TTTGGTGGTTGTG'etc.for(200) fold.
Abstract
Based on perfect rotational isomeric state model of polyethylene chainwithout any torsional stretch or chain twisting
the separation distance between a zig-zagsegment and its re-entry ones in lamella has been investigated. The intervals were definedby a pair of quantum numbers (kx
ky) according to the formula: D=0.153/(31/2)((8kx2+16ly2)1/2)(nm)kx and ky are integers just as the lattice coordinates on the respective & and α- axes ofthe crystal lattices for polyethylene. The crystal lattices of polyethylene can be accessible by the re-entry stems
whether it is adjacent fold or not.Conformations
until 14-bond fold
of the fold part were investigated.The sequence TTGTTG'G'TTGGTTG possesses the lowest average conformation energy per bond for (110) fold
and TGTTG'G'TTTG' for (020) fold.TTTGGTGGTTGTG'etc.for(200) fold.
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