TY - JOUR
T1 - Synthesis of porous polymers by means of Michael addition reaction of multifunctional acetoacetate and poly(ethylene glycol) diacrylate
AU - Naga, Naofumi
AU - Satoh, Mitsusuke
AU - Magara, Tomoyuki
AU - Ahmed, Kumkum
AU - Nakano, Tamaki
N1 - Funding Information:
This work was partially supported by JSPS KAKENHI Grant Number 18K0524.
Publisher Copyright:
© 2021 Elsevier Ltd
PY - 2022/1/5
Y1 - 2022/1/5
N2 - Michael-addition reaction between multifunctional-acetoacetate, meso-erythritol tetra-acetoacetate (ETAA) or d-sorbitol hexa-acetoacetate (SHAA), and poly(ethylene glycol) diacrylate (PEGDA) has been investigated to obtain the corresponding network polymer. The reactions in mixtures of ethanol (EtOH) and dimethyl sulfoxide (DMSO) using 1,8-diazabicyclo[5.4.0]undecane-7-ene (DBU) as a catalyst successfully yielded porous polymers. Polymerization conditions, such as EtOH/DMSO volume ratio, DBU/PEGDA feed ratio, and monomer concentration, strongly affected the morphology of the network polymer products, i.e., gel, porous polymer, or precipitate. The surface morphology of the porous polymers showed connected spheres with diameters ranged from 2 μm to 50 μm. The monomer concentration and molar mass of PEGDA affected the diameter of the spheres in the porous polymers. All the porous polymers were soft and flexible, and were not breakable by compression. Various solvents were absorbed into the porous polymer due to their high affinity with polyethylene glycol units in the network structure.
AB - Michael-addition reaction between multifunctional-acetoacetate, meso-erythritol tetra-acetoacetate (ETAA) or d-sorbitol hexa-acetoacetate (SHAA), and poly(ethylene glycol) diacrylate (PEGDA) has been investigated to obtain the corresponding network polymer. The reactions in mixtures of ethanol (EtOH) and dimethyl sulfoxide (DMSO) using 1,8-diazabicyclo[5.4.0]undecane-7-ene (DBU) as a catalyst successfully yielded porous polymers. Polymerization conditions, such as EtOH/DMSO volume ratio, DBU/PEGDA feed ratio, and monomer concentration, strongly affected the morphology of the network polymer products, i.e., gel, porous polymer, or precipitate. The surface morphology of the porous polymers showed connected spheres with diameters ranged from 2 μm to 50 μm. The monomer concentration and molar mass of PEGDA affected the diameter of the spheres in the porous polymers. All the porous polymers were soft and flexible, and were not breakable by compression. Various solvents were absorbed into the porous polymer due to their high affinity with polyethylene glycol units in the network structure.
KW - Mechanical property
KW - Multifunctional acetoacetate
KW - Poly(ethylene glycol) diacrylate
KW - Porous polymer
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U2 - 10.1016/j.eurpolymj.2021.110901
DO - 10.1016/j.eurpolymj.2021.110901
M3 - Article
AN - SCOPUS:85120311835
SN - 0014-3057
VL - 162
JO - European Polymer Journal
JF - European Polymer Journal
M1 - 110901
ER -