Synthesis of New Cellobiose‐Based Glycopolysiloxanes and their Use as Polymer Stabilizers in Miniemulsion Polymerisation

Abstract

New glycopolysiloxanes were synthesized from cellobiose and commercially available reactive silicone oils or MD′M precursors. Their synthesis is based on the hydrosilylation of allyl‐functionalized cellobiose onto the reactive silicone oil, after protection of the hydroxyl functions. The subsequent deprotection step leads to a redistribution of the silicon chain to yield oligomers with around 5 or 6 silicon atoms. Two water‐dispersible glycosiloxanes were used for the steric stabilisation of vinyl acetate (VAc) miniemulsion polymerisation with up to 10% Miglyol® as the hydrophobic component. The best performances were obtained by using a mixture of non‐ionic triblock copolymer and glycopolysiloxane. Poly(vinyl acetate) (PVAc) latex with particle sizes around 200 nm were obtained, displaying colloidal stabilisation upon long‐time storage.

Synthesis and Solution Properties of Carbohydrate‐Modified Polysiloxane Bola Surfactants

“…Because the polyethers are often produced from nonrenewable petrochemical ethylene oxide and propylene oxide, the polyether siloxane-tailed surfactants are not environmental-friendly surfactants [13,14]. Recently, siloxane surfactants with carbohydrate as hydrophilic group have been synthesized and studied [15][16][17][18][19][20][21][22][23][24][25][26][27][28][29]. Compared with hydrophilic polyether groups, carbohydrates possess important properties such as biodegradability, biocompatibility, good hydrophilicity and better environmental.…”

Evolution of the water-monomer dynamic interfacial properties during methyl methacrylate radical polymerization in a single monomer droplet: dependence on the chemical structure of the surfactant

“…For instance, the too‐stiff structure of chitosan does not ensure good surface coverage and more flexible polymer surfactants are needed to stabilize the mini‐emulsion . The high flexibility of silicon chains in glycopolysiloxanes offers an interesting alternative, provided the saccharide block is hydrophilic enough …”

Polysiloxane‐Backbone Block Copolymers in a One‐Pot Synthesis: A Silicone Platform for Facile Functionalization

“…Their specific properties have also been discussed in a number of publications 1–3. Further information on polymer structures combining silicones with a variety of other polymers, either in the form of random or block copolymers or with grafted,4, 5 branched,6–8 or star‐shaped9–11 morphology and crosslinked polymer networks12–14 can be found in literature. These approaches rely on the combination of polysiloxanes with organic polymer chains.…”