Transamidation in melt-mixed aliphatic and aromatic polyamides .1. Determination of the degree of randomness and number-average block length by means of C-13 NMR

被引：61

作者：

Aerdts, AM ^{[1
]}

Eersels, KLL ^{[1
]}

Groeninckx, G ^{[1
]}

机构：

[1] CATHOLIC UNIV LEUVEN,DEPT CHEM,LAB MACROMOLEC STRUCT CHEM,B-3001 HEVERLEE,BELGIUM

来源：

MACROMOLECULES | 1996年 / 29卷 / 03期

关键词：

D O I：

10.1021/ma9507857

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 NMR spectra of polyamide 46/polyamide 6I copolymers, which were obtained by reaction in the molten sate, are studied. Using C-13 NMR, a physical blend of polyamide 46 and polyamide 6I and a polyamide 46/polyamide 6I copolymer could be discriminated. Four kinds of diad sequences are observed in the carbonyl resonance signals of the polyamide 46/polyamide 6I copolymer, and an assignment has been made. From the relative peak areas of the diad sequences and using a statistical method for a four-component polyamide system, the degree of transamidation, the degree of randomness, and the number-average block length have been calculated.

引用

页码：1041 / 1045

页数：5

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