期刊
MACROMOLECULAR RAPID COMMUNICATIONS
卷 40, 期 2, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/marc.201800326
关键词
living polymerization; nanoparticles; polymerization-induced self-assembly; ring opening metathesis polymerization
资金
- Ontario Research Chairs
- Natural Sciences and Engineering Research Council of Canada
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 approximate to 200nm diameter were prepared.
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