Polymorphism in Polyamide of Dytek®-A and Dodecanedioic Acid

被引：0

作者：

M. Y. Keating

K. H. Gardner

H. Ng

D. N. Marks

W. S. Yung

P. Avakian

H. W. Starkweather

机构：

[1] DuPont Central Research and Development,DuPon Nylon

[2] Research Center,undefined

[3] DuPont-Canada,undefined

[4] Wilmington,undefined

来源：

Journal of Thermal Analysis and Calorimetry | 1999年 / 56卷

关键词：

branched diamine; melting; polyamides; polymorphism; transformation; WXRD;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Our X-ray work of Dytek®-A, 2-methyl-pentamethylenediamine, containing polyamides shows polymorphism, whereas the polyamides with linear diamines do not. The polyamide of Dytek®-A and dodecanedioic acid, MPMD-12, is singled out for discussion and compared with the unbranched analogs of polyamides 6,12 and 5,12. Due to the presence of the -CH3 side group in the 2-position of the diamine, the polyamide MPMD-12 exhibits two stable crystal conformations. The new δ polymorph is not seen in linear polyamides 6,12 and 5,12.

引用

页码：1133 / 1140

页数：7

共 9 条

[1] Stouffer J. M.(1996)undefined Polymer 37 1217-undefined
[2] Starkweather H. W.(1996)undefined J. Thermal Anal. 46 753-undefined
[3] Hsiao B. S.(undefined)undefined undefined undefined undefined-undefined
[4] Avakian P.(undefined)undefined undefined undefined undefined-undefined
[5] Jones G. A.(undefined)undefined undefined undefined undefined-undefined
[6] Menezel J. D.(undefined)undefined undefined undefined undefined-undefined
[7] Jaffe M.(undefined)undefined undefined undefined undefined-undefined
[8] Saw C. K.(undefined)undefined undefined undefined undefined-undefined
[9] Bruno T. P.(undefined)undefined undefined undefined undefined-undefined

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