TRANSPORT CHARACTERISTICS AND OTHER PHYSICOCHEMICAL PROPERTIES OF AGED POLY (1-(TRIMETHYLSILYL)-1-PROPYNE)

被引：91

作者：

YAMPOLSKII, YP ^{[1
]}

SHISHATSKII, SM ^{[1
]}

SHANTOROVICH, VP ^{[1
]}

ANTIPOV, EM ^{[1
]}

KUZMIN, NN ^{[1
]}

RYKOV, SV ^{[1
]}

KHODJAEVA, VL ^{[1
]}

PLATE, NA ^{[1
]}

机构：

[1] NN SEMENOV CHEM PHYS INST,MOSCOW,RUSSIA

来源：

JOURNAL OF APPLIED POLYMER SCIENCE | 1993年 / 48卷 / 11期

关键词：

D O I：

10.1002/app.1993.070481107

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Samples of poly[1-(trimethylsilyl)-1-propyne] were kept for about 4 years in ambient conditions. The permeability and diffusion coefficients were examined and found to be decreased by 1-2 orders of magnitude. To ascertain the nature of the changes underwent during long-term storage of this polymer, several physicochemical methods were applied: positron annihilation, wide-angle X-ray diffraction, spin probe, and density evaluation. These studies indicated that a decrease of free volume and more close chain packing took place during the aging process. IR spectroscopy and C-13-NMR showed that oxygen-containing products appeared in the polymer after long-term storage. This should result in a certain decrease in the rigidity of the backbone chains and more intensive interchain interactions, and, hence, in a decrease in the free volume of the aged polymer.

引用

页码：1935 / 1944

页数：10

共 30 条

[1]

ANZIFEROVA LI, 1977, ATLAS ESR SPECTRA SP

[2]

AUVIL SR, 1989, INT S MEMBRANES GAS, P19

[3]

BOKAREV AK, 1989, DOKL AKAD NAUK SSSR+, V305, P117

[4] VAN DER WAALS VOLUMES + RADII [J].