COPOLYMERS OF ANIONIC-POLYMERIZATION OF OCTANELACTAM WITH LAUROLACTAM (NYLON-8/12 COPOLYMERS) .1. PREPARATION AND GENERAL-PROPERTIES

被引：33

作者：

KEHAYOGLOU, AH

ARVANITOYANNIS, I

机构：

[1] Laboratory of Organic Chemical Technology, Aristotle University of Thessaloniki

来源：

EUROPEAN POLYMER JOURNAL | 1990年 / 26卷 / 03期

关键词：

D O I：

10.1016/0014-3057(90)90239-Z

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Thermoplastic statistical copolyamides from nine mixtures of octanelactam (OL) and ω-laurolactam (LL) and also the corresponding homopolymers (nylon-8 and nylon-12) were obtained in high yields by activated anionic copolymerization at 180°C, using sodium hydride as catalyst and N-phenylcarbamoylcaprolactam as activator. The proportions of co-units in the copolymers (freed from oligomers) were determined by elemental analysis, u.v. spectroscopy and NMR. Samples were also characterized by Tm, [n], d(g/cm3), Mn (osmotic), amino-end groups content and interplanar spacing (X-ray). The results are correlated with the molar ratio of the comonomers (OL/LL) and discussed. Minima for Tm and crystallinity were indicated for the copolymers of 50 50- 60 40 OL/LL molar compositions. © 1990.

引用

页码：261 / 266

页数：6

共 32 条

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ARVANITOYANNIS I, UNPUB EUR POLYM J

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