Single-molecule single crystals of poly(ethylene oxide)

被引：11

作者：

Bu, HS

Shi, SH

Chen, EQ

Hu, HJ

Zhang, Z

Wunderlich, B

机构：

[1] UNIV TENNESSEE,DEPT CHEM,KNOXVILLE,TN 37966

[2] OAK RIDGE NATL LAB,DIV CHEM & ANALYT SCI,OAK RIDGE,TN 37831

[3] FUDAN UNIV,DEPT MAT SCI,SHANGHAI 200433,PEOPLES R CHINA

[4] ACAD SINICA,BEIJING LAB ELECTRON MICROSCOPY,BEIJING 100080,PEOPLES R CHINA

来源：

JOURNAL OF MACROMOLECULAR SCIENCE-PHYSICS | 1996年 / B35卷 / 05期

基金：

中国国家自然科学基金; 美国国家航空航天局;

关键词：

electron microscopy; poly(oxyethylene); single-molecule single crystal; twinning;

D O I：

10.1080/00222349608220405

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Single-molecule single crystals were prepared from two fractions of poly(ethylene oxide) (PEG) with narrow molar mass distribution and an equimolar mixture of the two fractions. It was proven that the molar mass distribution of the single-molecule single crystals from the mixed sample corresponds to an addition of those of the pure fractions. Well-shaped crystals were obtained after isothermal crystallization or on annealing. A variety of morphologies typical for multimolecule single crystals of PEO were found and are described on the basis of the various known modes of twinning. The results are in agreement with the known unit cell of PEG.

引用

页码：731 / 747

页数：17

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