Surface properties and moisture behaviour of pine and heat-treated spruce modified with alkoxysilanes by sol-gel process

Shaoxia Wang (Corresponding Author), Riitta Mahlberg, Saila Jämsä, Juha Nikkola, Juha Mannila, Anne-Christine Ritschkoff, Jouko Peltonen

Research output: Contribution to journalArticleScientificpeer-review

19 Citations (Scopus)

Abstract

The surface morphology and moisture behaviour of pine (Pinus sylvestris) sapwood and heat-treated spruce (Picea abies) deposited with two types of silane-based sol–gel coatings were studied by atomic force microscopy (AFM) and water contact angle measurement. The chemical composition and distribution of sol–gel coatings on wood surfaces were investigated by X-ray photoelectron spectroscopy (XPS) and time-of-flight secondary ion mass spectrometry (ToF-SIMS). The AFM images revealed that the sol–gel coatings applied by spreading covered the fine structure of the wood substrates. The surface roughness analysis of the AFM topographical images indicated that the sol–gel coatings, especially the one with short aliphatic chain, had a tendency to smooth the wood surface. The XPS results confirmed that the sol–gel coatings had successfully deposited onto pine sapwood and heat-treated spruce changing their surface chemistries. ToF-SIMS images showing Si ion distribution on treated surfaces revealed that the coatings fully covered pine sapwood surfaces. The thin coating layers formed on heat-treated spruce surfaces followed the original wood surface structure. The contact angle measurements indicated that the water repellent properties of both pine and heat-treated spruce were improved to certain extent by the sol–gel coatings.
Original languageEnglish
Pages (from-to)274-282
Number of pages9
JournalProgress in Organic Coatings
Volume71
Issue number3
DOIs
Publication statusPublished - 2011
MoE publication typeA1 Journal article-refereed

Fingerprint

Sol-gel process
Surface properties
Moisture
Coatings
Wood
Atomic force microscopy
Angle measurement
Secondary ion mass spectrometry
Contact angle
X ray photoelectron spectroscopy
Silanes
Hot Temperature
Water
Surface chemistry
Surface structure
Surface morphology
Surface roughness
Ions
Substrates
Chemical analysis

Keywords

  • Morphology
  • Sol-gel coatings
  • Surface chemistry
  • Water repellence
  • Water permeability
  • Wood

Cite this

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title = "Surface properties and moisture behaviour of pine and heat-treated spruce modified with alkoxysilanes by sol-gel process",
abstract = "The surface morphology and moisture behaviour of pine (Pinus sylvestris) sapwood and heat-treated spruce (Picea abies) deposited with two types of silane-based sol–gel coatings were studied by atomic force microscopy (AFM) and water contact angle measurement. The chemical composition and distribution of sol–gel coatings on wood surfaces were investigated by X-ray photoelectron spectroscopy (XPS) and time-of-flight secondary ion mass spectrometry (ToF-SIMS). The AFM images revealed that the sol–gel coatings applied by spreading covered the fine structure of the wood substrates. The surface roughness analysis of the AFM topographical images indicated that the sol–gel coatings, especially the one with short aliphatic chain, had a tendency to smooth the wood surface. The XPS results confirmed that the sol–gel coatings had successfully deposited onto pine sapwood and heat-treated spruce changing their surface chemistries. ToF-SIMS images showing Si ion distribution on treated surfaces revealed that the coatings fully covered pine sapwood surfaces. The thin coating layers formed on heat-treated spruce surfaces followed the original wood surface structure. The contact angle measurements indicated that the water repellent properties of both pine and heat-treated spruce were improved to certain extent by the sol–gel coatings.",
keywords = "Morphology, Sol-gel coatings, Surface chemistry, Water repellence, Water permeability, Wood",
author = "Shaoxia Wang and Riitta Mahlberg and Saila J{\"a}ms{\"a} and Juha Nikkola and Juha Mannila and Anne-Christine Ritschkoff and Jouko Peltonen",
year = "2011",
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language = "English",
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pages = "274--282",
journal = "Progress in Organic Coatings",
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}

Surface properties and moisture behaviour of pine and heat-treated spruce modified with alkoxysilanes by sol-gel process. / Wang, Shaoxia (Corresponding Author); Mahlberg, Riitta; Jämsä, Saila; Nikkola, Juha; Mannila, Juha; Ritschkoff, Anne-Christine; Peltonen, Jouko.

In: Progress in Organic Coatings, Vol. 71, No. 3, 2011, p. 274-282.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Surface properties and moisture behaviour of pine and heat-treated spruce modified with alkoxysilanes by sol-gel process

AU - Wang, Shaoxia

AU - Mahlberg, Riitta

AU - Jämsä, Saila

AU - Nikkola, Juha

AU - Mannila, Juha

AU - Ritschkoff, Anne-Christine

AU - Peltonen, Jouko

PY - 2011

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N2 - The surface morphology and moisture behaviour of pine (Pinus sylvestris) sapwood and heat-treated spruce (Picea abies) deposited with two types of silane-based sol–gel coatings were studied by atomic force microscopy (AFM) and water contact angle measurement. The chemical composition and distribution of sol–gel coatings on wood surfaces were investigated by X-ray photoelectron spectroscopy (XPS) and time-of-flight secondary ion mass spectrometry (ToF-SIMS). The AFM images revealed that the sol–gel coatings applied by spreading covered the fine structure of the wood substrates. The surface roughness analysis of the AFM topographical images indicated that the sol–gel coatings, especially the one with short aliphatic chain, had a tendency to smooth the wood surface. The XPS results confirmed that the sol–gel coatings had successfully deposited onto pine sapwood and heat-treated spruce changing their surface chemistries. ToF-SIMS images showing Si ion distribution on treated surfaces revealed that the coatings fully covered pine sapwood surfaces. The thin coating layers formed on heat-treated spruce surfaces followed the original wood surface structure. The contact angle measurements indicated that the water repellent properties of both pine and heat-treated spruce were improved to certain extent by the sol–gel coatings.

AB - The surface morphology and moisture behaviour of pine (Pinus sylvestris) sapwood and heat-treated spruce (Picea abies) deposited with two types of silane-based sol–gel coatings were studied by atomic force microscopy (AFM) and water contact angle measurement. The chemical composition and distribution of sol–gel coatings on wood surfaces were investigated by X-ray photoelectron spectroscopy (XPS) and time-of-flight secondary ion mass spectrometry (ToF-SIMS). The AFM images revealed that the sol–gel coatings applied by spreading covered the fine structure of the wood substrates. The surface roughness analysis of the AFM topographical images indicated that the sol–gel coatings, especially the one with short aliphatic chain, had a tendency to smooth the wood surface. The XPS results confirmed that the sol–gel coatings had successfully deposited onto pine sapwood and heat-treated spruce changing their surface chemistries. ToF-SIMS images showing Si ion distribution on treated surfaces revealed that the coatings fully covered pine sapwood surfaces. The thin coating layers formed on heat-treated spruce surfaces followed the original wood surface structure. The contact angle measurements indicated that the water repellent properties of both pine and heat-treated spruce were improved to certain extent by the sol–gel coatings.

KW - Morphology

KW - Sol-gel coatings

KW - Surface chemistry

KW - Water repellence

KW - Water permeability

KW - Wood

U2 - 10.1016/j.porgcoat.2011.03.011

DO - 10.1016/j.porgcoat.2011.03.011

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SP - 274

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JO - Progress in Organic Coatings

JF - Progress in Organic Coatings

SN - 0300-9440

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ER -