SYNTHESIS AND CHARACTERIZATION OF POLY(OXY-2,6-NAPHTHALENEDIYLCARBONYL) WHISKERS FROM 2-ACETOXY-6-NAPHTHOIC ACID

被引：47

作者：

KIMURA, K

ENDO, S

KATO, Y

YAMASHITA, Y

机构：

[1] OKAYAMA UNIV,FAC ENGN,OKAYAMA 700,JAPAN

[2] TOYOBO CO LTD,RES CTR,OTSU,SHIGA 52002,JAPAN

来源：

POLYMER | 1993年 / 34卷 / 05期

关键词：

POLY(OXY-2,6-NAPHTHALENEDIYLCARBONYL); POLYMER WHISKER; AROMATIC POLYESTER; MORPHOLOGY CONTROL; NEEDLE-LIKE CRYSTALS; EXTENDED-CHAIN CRYSTALS;

D O I：

10.1016/0032-3861(93)90229-4

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 synthesis and characterization of poly(oxy-2,6-naphthalenediylcarbonyl) (PON) whiskers from 2-acetoxy-6-naphthoic acid are described. The important factors in controlling PON crystal morphologies during high-temperature solution polymerization are polarity of solvent, concentration of monomer and stirring. Less-polar solvents like liquid paraffin or Therm S 800, low concentration of monomer and no stirring are desirable for making PON whiskers. The size of the whisker prepared in liquid paraffin is 7-17 mum in length and 0.5-1.0 mum in width. From its electron diffraction patterns, it was found that this whisker exhibits a single-crystal nature and the polymer chains align along the long axis of the whisker. Owing to the close packing of polymer chains in this crystal, the whisker has the highest thermal stability compared with the other fibrillar and slab-like crystals. The formation mechanism of PON whiskers is also investigated in comparison to that of poly(oxy-1,4-benzenediylcarbonyl) whiskers.

引用

页码：1054 / 1059

页数：6

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