Abstract

Wood biorefining currently involves large-scale industrial processes where a notable portion of raw materials, namely hemicelluloses and lignin, are either lost with the process water, degraded, or burnt for energy. Value added utilization of polymeric hemicelluloses is challenging due to their intermediate molar mass and the presence of other wood components, such as phenolic residues or wood extractives. Oil-in-water (O/W) emulsions represent a diverse and abundant class of applications in which the natural properties of wood hemicelluloses are beneficial. In the current work, we present highly promising new technical alkyd paint emulsion systems stabilized with hardwood glucuronoxylans (GX) and softwood galactoglucomannans (GGM). Samples
from three isolation methods and their further fractionation by ethanol precipitation were systematically compared with regard to hemicellulose composition, interfacial activity, and functionality in emulsions. Emulsification of alkyd resins was successful with both GX and GGM obtained by various biorefining strategies. The highest emulsion stability over storage was achieved using crude non-purified GX and GGM fractions, and was correlated with the presence of phenolic compounds and extractives, interfacial activity, and small droplet size. Hardwood GX and softwood GGM are envisioned as natural emulsifiers of alkyd O/W emulsions, which are examples of diverse and abundantly-used technical dispersions. This study can be utilized as a guideline for targeted extraction of hemicelluloses with desired functionality, and as a protocol for developing environmentally-compatible industrial dispersions.
Original languageEnglish
JournalIndustrial Crops and Products
Volume133
Pages (from-to)212-220
ISSN0926-6690
DOIs
Publication statusPublished - 16 Mar 2019
MoE publication typeA1 Journal article-refereed

Fields of Science

  • 415 Other agricultural sciences
  • Emulsions
  • Alkyds
  • Paints
  • Hemicelluloses
  • Glucuronoxylans
  • Galactoglucomannans
  • HOT-WATER EXTRACTION
  • SPRUCE GALACTOGLUCOMANNANS
  • EMULSIFICATION
  • VISCOSITY
  • PULP
  • FLOW

Cite this

Mikkonen, Kirsi S. ; Kirjoranta, Satu ; Xu, Chunlin ; Hemming, Jarl ; Pranovich, Andrey ; Bhattarai, Mamata ; Peltonen, Leena ; Kilpeläinen, Petri ; Maina, Ndegwa ; Tenkanen, Maija ; Lehtonen, Mari ; Willför, Stefan. / Environmentally-compatible alkyd paints stabilized by wood hemicelluloses. In: Industrial Crops and Products. 2019 ; Vol. 133. pp. 212-220.
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title = "Environmentally-compatible alkyd paints stabilized by wood hemicelluloses",
abstract = "Wood biorefining currently involves large-scale industrial processes where a notable portion of raw materials, namely hemicelluloses and lignin, are either lost with the process water, degraded, or burnt for energy. Value added utilization of polymeric hemicelluloses is challenging due to their intermediate molar mass and the presence of other wood components, such as phenolic residues or wood extractives. Oil-in-water (O/W) emulsions represent a diverse and abundant class of applications in which the natural properties of wood hemicelluloses are beneficial. In the current work, we present highly promising new technical alkyd paint emulsion systems stabilized with hardwood glucuronoxylans (GX) and softwood galactoglucomannans (GGM). Samplesfrom three isolation methods and their further fractionation by ethanol precipitation were systematically compared with regard to hemicellulose composition, interfacial activity, and functionality in emulsions. Emulsification of alkyd resins was successful with both GX and GGM obtained by various biorefining strategies. The highest emulsion stability over storage was achieved using crude non-purified GX and GGM fractions, and was correlated with the presence of phenolic compounds and extractives, interfacial activity, and small droplet size. Hardwood GX and softwood GGM are envisioned as natural emulsifiers of alkyd O/W emulsions, which are examples of diverse and abundantly-used technical dispersions. This study can be utilized as a guideline for targeted extraction of hemicelluloses with desired functionality, and as a protocol for developing environmentally-compatible industrial dispersions.",
keywords = "415 Other agricultural sciences, Emulsions, Alkyds, Paints, Hemicelluloses, Glucuronoxylans, Galactoglucomannans, HOT-WATER EXTRACTION, SPRUCE GALACTOGLUCOMANNANS, EMULSIFICATION, VISCOSITY, PULP, FLOW",
author = "Mikkonen, {Kirsi S.} and Satu Kirjoranta and Chunlin Xu and Jarl Hemming and Andrey Pranovich and Mamata Bhattarai and Leena Peltonen and Petri Kilpel{\"a}inen and Ndegwa Maina and Maija Tenkanen and Mari Lehtonen and Stefan Willf{\"o}r",
year = "2019",
month = "3",
day = "16",
doi = "10.1016/j.indcrop.2019.03.017",
language = "English",
volume = "133",
pages = "212--220",
journal = "Industrial Crops and Products",
issn = "0926-6690",
publisher = "Elsevier Scientific Publ. Co",

}

Environmentally-compatible alkyd paints stabilized by wood hemicelluloses. / Mikkonen, Kirsi S.; Kirjoranta, Satu; Xu, Chunlin; Hemming, Jarl; Pranovich, Andrey; Bhattarai, Mamata; Peltonen, Leena; Kilpeläinen, Petri; Maina, Ndegwa; Tenkanen, Maija; Lehtonen, Mari; Willför, Stefan.

In: Industrial Crops and Products, Vol. 133, 16.03.2019, p. 212-220.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Environmentally-compatible alkyd paints stabilized by wood hemicelluloses

AU - Mikkonen, Kirsi S.

AU - Kirjoranta, Satu

AU - Xu, Chunlin

AU - Hemming, Jarl

AU - Pranovich, Andrey

AU - Bhattarai, Mamata

AU - Peltonen, Leena

AU - Kilpeläinen, Petri

AU - Maina, Ndegwa

AU - Tenkanen, Maija

AU - Lehtonen, Mari

AU - Willför, Stefan

PY - 2019/3/16

Y1 - 2019/3/16

N2 - Wood biorefining currently involves large-scale industrial processes where a notable portion of raw materials, namely hemicelluloses and lignin, are either lost with the process water, degraded, or burnt for energy. Value added utilization of polymeric hemicelluloses is challenging due to their intermediate molar mass and the presence of other wood components, such as phenolic residues or wood extractives. Oil-in-water (O/W) emulsions represent a diverse and abundant class of applications in which the natural properties of wood hemicelluloses are beneficial. In the current work, we present highly promising new technical alkyd paint emulsion systems stabilized with hardwood glucuronoxylans (GX) and softwood galactoglucomannans (GGM). Samplesfrom three isolation methods and their further fractionation by ethanol precipitation were systematically compared with regard to hemicellulose composition, interfacial activity, and functionality in emulsions. Emulsification of alkyd resins was successful with both GX and GGM obtained by various biorefining strategies. The highest emulsion stability over storage was achieved using crude non-purified GX and GGM fractions, and was correlated with the presence of phenolic compounds and extractives, interfacial activity, and small droplet size. Hardwood GX and softwood GGM are envisioned as natural emulsifiers of alkyd O/W emulsions, which are examples of diverse and abundantly-used technical dispersions. This study can be utilized as a guideline for targeted extraction of hemicelluloses with desired functionality, and as a protocol for developing environmentally-compatible industrial dispersions.

AB - Wood biorefining currently involves large-scale industrial processes where a notable portion of raw materials, namely hemicelluloses and lignin, are either lost with the process water, degraded, or burnt for energy. Value added utilization of polymeric hemicelluloses is challenging due to their intermediate molar mass and the presence of other wood components, such as phenolic residues or wood extractives. Oil-in-water (O/W) emulsions represent a diverse and abundant class of applications in which the natural properties of wood hemicelluloses are beneficial. In the current work, we present highly promising new technical alkyd paint emulsion systems stabilized with hardwood glucuronoxylans (GX) and softwood galactoglucomannans (GGM). Samplesfrom three isolation methods and their further fractionation by ethanol precipitation were systematically compared with regard to hemicellulose composition, interfacial activity, and functionality in emulsions. Emulsification of alkyd resins was successful with both GX and GGM obtained by various biorefining strategies. The highest emulsion stability over storage was achieved using crude non-purified GX and GGM fractions, and was correlated with the presence of phenolic compounds and extractives, interfacial activity, and small droplet size. Hardwood GX and softwood GGM are envisioned as natural emulsifiers of alkyd O/W emulsions, which are examples of diverse and abundantly-used technical dispersions. This study can be utilized as a guideline for targeted extraction of hemicelluloses with desired functionality, and as a protocol for developing environmentally-compatible industrial dispersions.

KW - 415 Other agricultural sciences

KW - Emulsions

KW - Alkyds

KW - Paints

KW - Hemicelluloses

KW - Glucuronoxylans

KW - Galactoglucomannans

KW - HOT-WATER EXTRACTION

KW - SPRUCE GALACTOGLUCOMANNANS

KW - EMULSIFICATION

KW - VISCOSITY

KW - PULP

KW - FLOW

U2 - 10.1016/j.indcrop.2019.03.017

DO - 10.1016/j.indcrop.2019.03.017

M3 - Article

VL - 133

SP - 212

EP - 220

JO - Industrial Crops and Products

JF - Industrial Crops and Products

SN - 0926-6690

ER -