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Polymerization‐Induced Self‐Assembly (PISA) of 1,5‐Cyclooctadiene Using Ring Opening Metathesis Polymerization
Author(s) -
TorresRocha Olga Lidia,
Wu Xiaowei,
Zhu Chunyang,
Crudden Cathleen M.,
Cunningham Michael F.
Publication year - 2019
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.201800326
Subject(s) - romp , polymerization , ring opening metathesis polymerisation , amphiphile , polymer chemistry , copolymer , monomer , norbornene , materials science , metathesis , ruthenium , chemistry , polymer , organic chemistry , catalysis , composite material
Ring opening metathesis polymerization (ROMP) is a technique that allows the synthesis of well‐defined linear polyolefins. Polymerization‐induced self‐assembly (PISA) involves the synthesis of amphiphilic block copolymers: a hydrophilic block is first polymerized homogeneously in solution (usually water) followed by polymerization of a second hydrophobic block, resulting in a diblock copolymer that self‐assembles. In this communication, preliminary results of the development of PISA for the synthesis of amphiphilic block linear polyolefins via ROMP using a water‐soluble PEGylated ruthenium alkylidene catalyst are presented. In the first step, a water‐soluble modified‐norbornene monomer was polymerized in water, then 1,5‐cyclooctadiene was added to the system to produce amphiphilic block polyolefins. By varying the concentrations of hydrophilic versus hydrophobic monomer, stable latexes with final particles of ≈200 nm diameter were prepared.