SELECTIVE DEGRADATION OF SILICONE COPOLYMERS AND NETWORKS

被引：12

作者：

KEOHAN, FL ^{[1
]}

SWINT, SA ^{[1
]}

BUESE, MA ^{[1
]}

机构：

[1] GE,CTR CORP RES & DEV,CHEM LABS,SCHENECTADY,NY 12345

来源：

JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY | 1991年 / 29卷 / 03期

关键词：

D O I：

10.1002/pola.1991.080290302

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

An exhaustive end-capping method for the analysis of silicone copolymers and networks using hexamethyldisiloxane in the presence of trifluoromethanesulfonic acid was demonstrated. The hard block of a polyimide-co-polysiloxane was isolated by the equilibration of the copolymer with a large excess of hexamethyldisiloxane and subsequently examined by size exclusion chromatography. Addition cured polyimidesiloxane networks were also equilibrated with an excess of the disiloxane and the resulting oligomers characterized by gas chromatography of the end-capped fragments.

引用

页码：303 / 308

页数：6

共 12 条

[1] CHARACTERIZATION OF PDMS MODEL JUNCTIONS AND NETWORKS BY SOLUTION AND SOLID-STATE SI-29 NMR-SPECTROSCOPY
BESHAH, K
MARK, JE
ACKERMAN, JL
HIMSTEDT, A
[J]. JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS, 1986, 24 (06) : 1207 - 1225
[2] EQUILIBRIUM CYCLIC COMPOSITIONS IN THE PREPARATION OF ALPHA,OMEGA-FUNCTIONALIZED POLY(DIMETHYLSILOXANES)
BUESE, MA
[J]. MACROMOLECULES, 1987, 20 (03) : 694 - 696
[3] BUESE MA, 1986, Patent No. 4598135
[4] Eddy V. J., 1985, U. S. Pat., Patent No. [4,542,226, 4542226]
[5] Karstedt B.D., 1973, [No title captured], Patent No. [US3775452, 3775452]
[6] Ryang H.-S., 1983, Patent No. [US4381396, 4381396]
[7] Semlyen J. A., 1976, ADV POLYM SCI, V21, P41
[8] EQUILIBRIUM RING CONCENTRATIONS AND STATISTICAL CONFORMATIONS OF POLYMER CHAINS .I. OLIGOMERIC DIMETHYLSILOXANES
SEMLYEN, JA
WRIGHT, PV
[J]. POLYMER, 1969, 10 (07) : 543 - &
[9] SWINT SA, 1990, MACROMOLECULES, V23, P4341
[10] Wright P. V., 1984, RING OPENING POLYM, V2, P1055

← 1 2 →