Viscosity-molecular weight relationship for aminopropyl-terminated poly(dimethylsiloxane)

Authors
Wu, YZ Feng, SY
Citation
Yz. Wu et Sy. Feng, Viscosity-molecular weight relationship for aminopropyl-terminated poly(dimethylsiloxane), J APPL POLY, 80(7), 2001, pp. 975-978
Citations number
17
Categorie Soggetti
Organic Chemistry/Polymer Science","Material Science & Engineering
Journal title
JOURNAL OF APPLIED POLYMER SCIENCE
ISSN journal
00218995 → ACNP
Volume
80
Issue
7
Year of publication
2001
Pages
975 - 978
Database
ISI
SICI code
0021-8995(20010516)80:7<975:VWRFAP>2.0.ZU;2-D
Abstract
Aminopropyl-terminated poly(dimethylsiloxane) (ATPS) with different molecul ar weights was prepared by base-catalyzed equilibration of octamethylcyclot etrasiloxane and 1,3-bis(3-aminopropyl)-1,1,3,3-tetramethyldisiloxane with different ratios. Their number-average molecular weights (M-n) were determi ned by end-group analysis, and intrinsic viscosity([eta]) in toluene was me asured with a Ubbelohde viscometer. A relationship between M-n and [eta] wa s obtained for ATPS. For 1.0 x 10(4) < M-n < 6.0 x 10(4), it was in accord with [eta](toluene,25 degreesC) = 5.26 X 10(-2) M-n(0.587). (C) 2001 John W iley & Sons, Inc.