Synthesis of galactoglucomannan-based latex via emulsion polymerization

Qiwen Yong; Jiayun Xu; Luyao Wang; Teija Tirri; Hejun Gao; Yunwen Liao; Martti Toivakka; Chunlin Xu

doi:10.1016/j.carbpol.2022.119565

Synthesis of galactoglucomannan-based latex via emulsion polymerization

Carbohydr Polym. 2022 Sep 1:291:119565. doi: 10.1016/j.carbpol.2022.119565. Epub 2022 May 4.

Authors

Qiwen Yong¹, Jiayun Xu², Luyao Wang³, Teija Tirri³, Hejun Gao⁴, Yunwen Liao⁴, Martti Toivakka⁵, Chunlin Xu⁶

Affiliations

¹ Institute of Applied Chemistry, Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, College of Chemistry and Chemical Engineering, China West Normal University, Nanchong 637009, China; Laboratory of Natural Materials Technology, Åbo Akademi University, Turku 20500, Finland. Electronic address: yongqiwen13@mails.ucas.ac.cn.
² Laboratory of Natural Materials Technology, Åbo Akademi University, Turku 20500, Finland; Tianjin Key Laboratory of Pulp and Paper, Tianjin University of Science and Technology, Tianjin 300457, China.
³ Laboratory of Natural Materials Technology, Åbo Akademi University, Turku 20500, Finland.
⁴ Institute of Applied Chemistry, Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, College of Chemistry and Chemical Engineering, China West Normal University, Nanchong 637009, China.
⁵ Laboratory of Natural Materials Technology, Åbo Akademi University, Turku 20500, Finland. Electronic address: Martti.Toivakka@abo.fi.
⁶ Laboratory of Natural Materials Technology, Åbo Akademi University, Turku 20500, Finland. Electronic address: Chunlin.Xu@abo.fi.

PMID: 35698334
DOI: 10.1016/j.carbpol.2022.119565

Abstract

This is the first time to report a facile strategy to fabricate galactoglucomannan-based latex with highly transparent, hydrophobic and flexible characteristics by combining etherification with subsequent emulsion polymerization. The allylated galactoglucomannans (A-GGM) and galactoglucomannan-based latexes (GGM-L) were prepared and their chemical structure, substitution degree, molecular weight, conversion rate, particle size and zeta potential were characterized by ATR-FTIR, ¹HNMR, quantitative ¹³CNMR, HP-SEC, HPLC and zeta-sizer nanometer analyzer, respectively. Furthermore, the effects of substitution degree on film surface roughness and homogeneity, water vapor permeability (WVP) and thermal stability were evaluated by AFM, SEM, WVP and TGA, respectively. The optimal GGM-L film exhibited 91.3% transmittance and 0.43% haze, 117° water contact angle, 31.2% elongation at break and 30.9 MPa ultimate tensile stress. The bio-based content of the GGM-L may reach about 99 wt%, which provides a promising avenue for polyolefin-based latex replacement for paper and paperboard applications.

Keywords: Bio-based latex; Etherification; Galactoglucomannan; Hemicellulose; Packaging application; Semi-continuous emulsion polymerization.

MeSH terms

Emulsions
Latex* / chemistry
Mannans* / chemistry
Polymerization

Substances

Emulsions
Latex
Mannans
galactoglucomannan