THERMAL PROPERTIES OF STIRRER CRYSTALLIZED POLYETHYLENE

被引：8

作者：

ATKINSON, CM

LARKIN, JA

RICHARDS.MJ

机构：

[1] Division of Molecular Science, National Physical Laboratory, Teddington, Middlesex

来源：

POLYMER | 1969年 / 10卷 / 02期

关键词：

D O I：

10.1016/0032-3861(69)90016-0

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Changes in the thermal properties of polyethylene crystals grown at 95°C from a stirred, dilute xylene solution have been determined using an adiabatic calorimeter over the temperature range -35° →180°C. The bulk of the material is thermodynamically very similar to polyethylene single crystals grown at 90°C in the conventional manner. An extremely small (ca. 0·2 per cent) amount of high melting (> 141·3°C) component is present which it is suggested is in a fully extended chain conformation. A method is presented whereby the reversible entropy of fusion (that is, free from irreversible annealing effects) may be calculated at low (< 90°C) temperatures. © 1969.

引用

页码：127 / &

共 14 条

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[2]

ARAKAWA T, 1967, J POLYM SCI C, V16, P653

[3]

ATKINSON CML, TO BE PUBLISHED

[4]

BAIR HE, 1968, POLYM PREPR AM CHEM, V9, P795

[5] A Study on Orientation Effects in Polyethylene in the Light of Crystalline Texture [J].