SHEAR MODIFICATION OF POLYTHENE

被引：40

作者：

HANSON, DE

机构：

[1] Imperial Chemical Industries Limited, Plastics Division, Welwyn Garden City, Hertfordshire

来源：

POLYMER ENGINEERING AND SCIENCE | 1969年 / 9卷 / 06期

关键词：

D O I：

10.1002/pen.760090606

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The changes occurring when polythene melts are subjected to shear, have been investigated using a rotating bob fitted into a ram extruder. In addition to chain scission, low density polythene exhibits reversible changes in mechanical and viscoelastic properties. The magnitude of the changes is controlled by total shear strain, and is related to molecular weight and long chain branching. The mechanism appears to be one of reversible disentanglement operating mainly on the large highly branched molecules. The work is relevant to various extrusion processes and to other long‐branched polymers. Copyright © 1969 Society of Plastics Engineers, Inc.

引用

页码：405 / &

共 10 条

[1] BARAMBOIM NK, 1964, MECHANO CHEMISTRY PO
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[3] DAWES GW, 1968, PLASTICS POLYMERS, V36, P58
[4] HODGE CW, UNPUBLISHED WORK
[5] HOWARD JB, 1968, PLAST POLYM, V36, P58
[6] Howells E. R., 1962, T PLAST I, V30, P240
[7] MACFARLANE PB, 1957, PLASTICS PROGRESS
[8] POHL HA, 1959, SPEJ, V15, P390
[9] CAPILLARY FLOW OF MOLTEN POLYETHYLENE - A PHOTOGRAPHIC STUDY OF MELT FRACTURE
TORDELLA, JP
[J]. TRANSACTIONS OF THE SOCIETY OF RHEOLOGY, 1957, 1 : 203 - 212
[10] 944208

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