A NEUTRON-SCATTERING STUDY OF THE MELTING BEHAVIOR OF POLYETHYLENE SINGLE-CRYSTALS

被引：63

作者：

BARHAM, PJ

SADLER, DM

机构：

[1] H. H. Wills Physics Laboratory, University of Bristol, Bristol, BS8 1TL, Tyndall Avenue

来源：

POLYMER | 1991年 / 32卷 / 03期

关键词：

NEUTRON SCATTERING; POLYETHYLENE; MELTING;

D O I：

10.1016/0032-3861(91)90440-T

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The changes in chain trajectories occurring during the melting of polyethylene single crystal mats have been studied by using neutron scattering techniques. It is shown that molecules change from a regular superfolded sheet structure into a random coil configuration in a very short time, almost-equal-to 2-4 s. Further, it is shown that the rate at which this process takes place is substantially independent of molecular weight.

引用

页码：393 / 395

页数：3

共 6 条

[1] MEMORY EFFECTS IN POLYETHYLENES - INFLUENCE OF PROCESSING AND CRYSTALLIZATION HISTORY [J].

BASTIAANSEN, CWM ;

MEYER, HEH ;

LEMSTRA, PJ .

POLYMER, 1990, 31 (08) :1435-1440

[2] DIFFUSION OF LONG-CHAIN MOLECULES THROUGH BULK POLYETHELENE [J].

KLEIN, J ;

BRISCOE, BJ .

PROCEEDINGS OF THE ROYAL SOCIETY OF LONDON SERIES A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES, 1979, 365 (1720) :53-73

[3] ANALYSIS OF ANISOTROPY OF SMALL-ANGLE NEUTRON-SCATTERING OF POLYETHYLENE SINGLE-CRYSTALS [J].

SADLER, DM .

JOURNAL OF APPLIED CRYSTALLOGRAPHY, 1983, 16 (OCT) :519-523

[4] NEUTRON-SCATTERING OF SOLUTION-GROWN POLYMER CRYSTALS - MOLECULAR DIMENSIONS ARE INSENSITIVE TO MOLECULAR-WEIGHT [J].

SADLER, DM ;

KELLER, A .

SCIENCE, 1979, 203 (4377) :263-265

[5] NEUTRON-SCATTERING STUDIES ON MOLECULAR TRAJECTORY IN POLYETHYLENE CRYSTALLIZED FROM SOLUTION AND MELT [J].

SADLER, DM ;

KELLER, A .

MACROMOLECULES, 1977, 10 (05) :1128-1140

[6] NEUTRON-SCATTERING STUDIES ON SOLUTION-GROWN CRYSTALS OF POLYETHYLENE - A STATISTICAL PREFERENCE FOR ADJACENT RE-ENTRY [J].

SPELLS, SJ ;

SADLER, DM .

POLYMER, 1984, 25 (06) :739-748

← 1 →