Spectroscopic study of modified polytetrafluoroethylene

被引：39

作者：

Ignatieva, LN ^{[1
]}

Tsvetnikov, AK

Livshits, AN

Saldin, VI

Buznik, VM

机构：

[1] Russian Acad Sci, Inst Chem, Far E Branch, Vladivostok, Russia

[2] Russian Acad Sci, Siberian Branch, Inst Phys, Krasnoyarsk, Russia

来源：

JOURNAL OF STRUCTURAL CHEMISTRY | 2002年 / 43卷 / 01期

关键词：

D O I：

10.1023/A:1016069715573

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The effect of thermal gas dynamic destruction of polytetrafluoroethylene on its microscopic and supramolecular structure and dYnamic properties is investigated by IR and 19F NA4R spectroscop.y. It is demonstrated that thermal gas dynamic dispersing changes the structure of polytetrafluoroethylene molecules. One of the possible mechanisms of PTFE depolymerization is the formation of oligomers with terminal -CF3 and -C=CF2 groups. This forms macromolecular packing with higher ordering and with dynamic characteristics other than those inherent in standard PTFE.

引用

页码：64 / 68

页数：5

共 20 条

[1] Anti, ortho, and gauche conformers of perfluoro-n-butane: Matrix-isolation IR spectra and calculations [J].

Albinsson, B ;

Michl, J .

JOURNAL OF PHYSICAL CHEMISTRY, 1996, 100 (09) :3418-3429

[2]

BOERIO PJ, 1970, J CHEM PHYS, V52, P4896

[3] STRUCTURES OF MOLECULES AND CRYSTALS OF FLUOROCARBONS [J].

BUNN, CW ;

HOWELLS, ER .

NATURE, 1954, 174 (4429) :549-551

[4]

CLARK ES, 1962, Z KRISTALLOGR, V117, P3119

[5] VIBRATIONAL-SPECTRA OF CRYSTALLINE POLYTETRAFLUOROETHYLENE [J].

CUTLER, DJ ;

HENDRA, PJ ;

RAHALKAR, RR ;

CUDBY, MEA .

POLYMER, 1981, 22 (06) :726-730

[6]

DEKHANT I, 1976, INFRARED SPECTROSCOP

[7] EFFECT OF IONIZING-RADIATION ON THE CHEMICAL-COMPOSITION, CRYSTALLINE CONTENT AND STRUCTURE, AND FLOW PROPERTIES OF POLYTETRAFLUOROETHYLENE [J].

FISHER, WK ;

CORELLI, JC .

JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY, 1981, 19 (10) :2465-2493

[8] Branching and cross-linking in radiation-modified poly(tetrafluoroethylene): A solid-state NMR investigation [J].

Fuchs, B ;

Scheler, U .

MACROMOLECULES, 2000, 33 (01) :120-124

[9]

Gabuda S. P., 1978, NMR INORGANIC FLUORI

[10] Deposition of PTFE thin films by ion beam sputtering and a study of the ion bombardment effect [J].

He, JL ;

Li, WZ ;

Wang, LD ;

Wang, J ;

Li, HD .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 1998, 135 (1-4) :512-516

← 1 2 →