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Novel Epoxide Initiators for the Carbocationic Polymerization of Isobutylene
Author(s) -
Puskas Judit E.,
Soytaş Serap Hayat,
Lim Goy Teck
Publication year - 2011
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.201151009
Subject(s) - isobutylene , silsesquioxane , disiloxane , polymer chemistry , polymerization , epoxide , chemistry , cationic polymerization , titanium tetrachloride , titanium , materials science , copolymer , organic chemistry , catalysis , polymer
Summary: We recently reported the synthesis of polyisobutylene (PIB) via direct initiation by epoxycyclohexyl isobutyl polyhedral oligomeric silsesquioxane (POSS®) (Figure 1) in conjunction with titanium tetrachloride (TiCl 4 ). This system successfully initiated the living carbocationic polymerization of isobutylene (IB) in hexane/methyl chloride (Hx/MeCl ‐60/40, v/v) at T = −80 °C, yielding an asymmetric telechelic PIB with one POSS® cage head group and one tert‐ Cl end group.1 This paper will discuss IB polymerizations initiated by 1,2‐epoxycyclohexane and bis [3,4‐(epoxycyclohexyl)ethyl]‐tetramethyl‐disiloxane, in conjunction with TiCl 4 .
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