AN INVESTIGATION ON FOLD STRUCTURE IN POLYETHYLENE LAMELLA WITH DIAMOND LATTICE MODEL*

ZHOU Zhiping; YAN Deyue

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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*
- Vol. 16, Issue 2, Pages: 133-141(1998)
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- Published：20 June 1998
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ZHOU Zhiping, YAN Deyue. AN INVESTIGATION ON FOLD STRUCTURE IN POLYETHYLENE LAMELLA WITH DIAMOND LATTICE MODEL*[J]. 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：

摘要

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

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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