Synthesis of bio‐based modified amphoteric acrylate epoxy emulsion surface sizing agent via RAFT polymerization

Abstract The synthesis of bio‐based modified amphoteric epoxy modified acrylate sizing emulsion based on reversible addition fragmentation chain transfer (RAFT) polymerization and its application in paper sizing were studied. A macromolecular chain transfer agent for RAFT polymerization was synthesi...

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Bibliographic Details
Published inJournal of applied polymer science Vol. 140; no. 39
Main Authors Liu, Jia, Cai, Zhengchun, Ji, Yongxin
Format Journal Article
LanguageEnglish
Published Hoboken Wiley Subscription Services, Inc 15.10.2023
Subjects
Addition polymerization
Amphoterics
Bursting strength
Cationic polymerization
Chain transfer
Chemical synthesis
Emulsion polymerization
Epoxy resins
Esterification
Latex
Materials science
Molecular chains
Monomers
Polymerization
Polymers
Sizing
Surface roughness
Tensile strength
Water resistance
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Summary:Abstract The synthesis of bio‐based modified amphoteric epoxy modified acrylate sizing emulsion based on reversible addition fragmentation chain transfer (RAFT) polymerization and its application in paper sizing were studied. A macromolecular chain transfer agent for RAFT polymerization was synthesized by the esterification of epoxy resin E‐51 with RAFT agent to eliminate the active groups on RAFT agent. Amphoteric polymer emulsifiers with good emulsification and dispersion effects in acidic and alkaline media were successfully prepared by RAFT polymerization. After neutralization, other monomers were polymerized to access cationic sizing emulsion (acid neutralization) and anionic sizing emulsion (alkali neutralization). The effects of bio‐based monomer content, hydrophilic monomer dimethylaminoethyl methacrylate (DM) content and degree of quaternization on the properties of sizing emulsion and sizing paper were further explored. In addition to the particle size and polymer dispersion index (PDI) of latex particles in different experimental groups, the water resistance, folding resistance, bursting strength, tensile strength and surface roughness of sized paper were analyzed and evaluated. Based on these results, a better sizing emulsion formulation was established. It was confirmed that the addition of bio‐based monomers can improve the sizing performance of paper.
ISSN:0021-8995
1097-4628
DOI:10.1002/app.54462