The crystallization kinetics of monodisperse C98H198 from the melt

被引：23

作者：

Teckoe, J ^{[1
]}

Bassett, DC ^{[1
]}

机构：

[1] Univ Reading, JJ Thomson Phys Lab, Reading RG6 6AF, Berks, England

来源：

POLYMER | 2000年 / 41卷 / 05期

基金：

英国工程与自然科学研究理事会;

关键词：

crystallization kinetics; monodisperse n-alkanes; extended-chains;

D O I：

10.1016/S0032-3861(99)00467-X

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 crystallization kinetics of the monodisperse n-alkane C98H198, growing as extended-chain lamellae from the melt, have been measured as part of a wider programme on these novel model systems for polymeric materials. Crystal growth rates decrease linearly, by a factor of 30, over the temperature range of 113.5-114.9 degrees C, an interval which encompasses a significant change in habit from individual through parallel-stacked lamellae to a type of coarse spherulite. The data differ considerably in character from those reported previously for extended chain crystallization of n-C198H398 but are comparable to earlier studies of purified n-C94H190 and are sensibly linear with supercooling as proposed in Hoffman's theory of extended-chain crystallization. (C) 1999 Elsevier Science Ltd. All rights reserved.

引用

页码：1953 / 1957

页数：5

共 21 条

[11]

HOSIER IL, 1999, UNPUB POLYMER

[12]

HOSIER IL, UNPUB

[13] CRYSTAL HABITS AND MORPHOLOGY OF N-TETRANONACONTANE (N-C94H190) [J].

KHOURY, F .

JOURNAL OF APPLIED PHYSICS, 1963, 34 (01) :73-&

[14] ON SPHERULITIC CRYSTALLIZATION AND THE MORPHOLOGY OF MELT-CRYSTALLIZED POLY (4-METHYLPENTENE-1) [J].

PATEL, D ;

BASSETT, DC .

PROCEEDINGS OF THE ROYAL SOCIETY-MATHEMATICAL AND PHYSICAL SCIENCES, 1994, 445 (1925) :577-595

[15]

PAYNTER OI, 1982, J CHEM SOC CHEM COMM, P1175

[16] A MODEL FOR CHAIN FOLDING IN POLYMER CRYSTALS - ROUGH GROWTH FACES ARE CONSISTENT WITH THE OBSERVED GROWTH-RATES [J].

SADLER, DM ;

GILMER, GH .

POLYMER, 1984, 25 (10) :1446-1452

[17] NEW EXPLANATION FOR CHAIN FOLDING IN POLYMERS [J].

SADLER, DM .

NATURE, 1987, 326 (6109) :174-177

[18] On the morphology and crystallization kinetics of monodisperse polyethylene oligomers crystallized from the melt [J].

Sutton, SJ ;

Vaughan, AS ;

Bassett, DC .

POLYMER, 1996, 37 (25) :5735-5738

[19] INVERSION OF THE TEMPERATURE-DEPENDENCE OF CRYSTALLIZATION RATES DUE TO ONSET OF CHAIN FOLDING [J].

UNGAR, G ;

KELLER, A .

POLYMER, 1987, 28 (11) :1899-1907

[20] THE CRYSTALLIZATION OF ULTRALONG NORMAL PARAFFINS - THE ONSET OF CHAIN FOLDING [J].

UNGAR, G ;

STEJNY, J ;

KELLER, A ;

BIDD, I ;

WHITING, MC .

SCIENCE, 1985, 229 (4711) :386-389

← 1 2 3 →