SYNTHESIS OF (AB)(N)-TYPE BLOCK-COPOLYMERS EMPLOYING SURFACE-ACTIVE MACRO-AZO INITIATORS

Authors
NAGAMUNE T UEDA A NAGAI S
Citation
T. Nagamune et al., SYNTHESIS OF (AB)(N)-TYPE BLOCK-COPOLYMERS EMPLOYING SURFACE-ACTIVE MACRO-AZO INITIATORS, Journal of applied polymer science, 62(2), 1996, pp. 359-365
Citations number
18
Categorie Soggetti
Polymer Sciences
Journal title
Journal of applied polymer science → ACNP
ISSN journal
00218995
Volume
62
Issue
2
Year of publication
1996
Pages
359 - 365
Database
ISI
SICI code
0021-8995(1996)62:2<359:SO(BES>2.0.ZU;2-V
Abstract
A macro-ate initiator (MAI), prepared by polycondensation of azobiscya nopentanoyl chloride (ACPC) and polyethyleneglycol having average mole cular weight of 1000 (PEG1000), was found to show enough surface activ ity to be usable as an initiator/surfactant (inisurf). Emulsion polyme rization of styrene (St) using this MAI as inisurf was carried out and (AB)(n)-type poly(PEO-b-PSt) block copolymer (where n represents the block-multiplicity) was obtained. In comparison with solution copolyme rization, the emulsion block copolymerization gave PEO-b-PSt with high er molecular weight due to increased block multiplicity. (C) 1996 John Wiley & Sons, Inc.