Benchmarking new wood fibre-based sound absorbing material made with a foam-forming technique

Tiina Pöhler (Corresponding Author), Petri Jetsu, Heikki Isomoisio

Research output: Contribution to journalArticleScientificpeer-review

11 Citations (Scopus)

Abstract

A new sound absorbing material made from 100% softwood fibres by means of a foam-forming technique is introduced. In foam forming, a wet foam is created by mechanically mixing water, fibres and a surfactant. The air bubbles keep the wet fibres separate, and a highly porous fibre network is formed during drying. The sound absorption of foam-formed structures was measured by means of an impedance tube. The results showed that foam-formed softwood materials possessed a competitive sound absorption coefficient compared to different types of commercial sound absorber materials. The material is based on 100% softwood fibres without added binders and is semi-rigid and does not completely recover from compression. Improvement in the strength properties of softwood material can be obtained by using starch or cellulose microfibrils. The material could be used in indoor applications, for example, in replacing mineral wool acoustic ceiling panels or polyester non-woven materials in office acoustics products.
Original languageEnglish
Pages (from-to)131-143
JournalBuilding Acoustics
Volume23
Issue number3-4
DOIs
Publication statusPublished - 2016
MoE publication typeA1 Journal article-refereed

Fingerprint

forming techniques
Benchmarking
foams
Foams
Wood
Acoustic waves
Softwoods
fibers
acoustics
Fibers
sound transmission
absorbers (materials)
wool
ceilings
starches
polyesters
Acoustics
Mineral wool
cellulose
drying

Keywords

  • noise control
  • sound absorption
  • foam forming
  • natural fibre
  • organic fibre
  • softwood

Cite this

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title = "Benchmarking new wood fibre-based sound absorbing material made with a foam-forming technique",
abstract = "A new sound absorbing material made from 100{\%} softwood fibres by means of a foam-forming technique is introduced. In foam forming, a wet foam is created by mechanically mixing water, fibres and a surfactant. The air bubbles keep the wet fibres separate, and a highly porous fibre network is formed during drying. The sound absorption of foam-formed structures was measured by means of an impedance tube. The results showed that foam-formed softwood materials possessed a competitive sound absorption coefficient compared to different types of commercial sound absorber materials. The material is based on 100{\%} softwood fibres without added binders and is semi-rigid and does not completely recover from compression. Improvement in the strength properties of softwood material can be obtained by using starch or cellulose microfibrils. The material could be used in indoor applications, for example, in replacing mineral wool acoustic ceiling panels or polyester non-woven materials in office acoustics products.",
keywords = "noise control, sound absorption, foam forming, natural fibre, organic fibre, softwood",
author = "Tiina P{\"o}hler and Petri Jetsu and Heikki Isomoisio",
note = "SDA: SHP: Bioeconomy Project code: 83000",
year = "2016",
doi = "10.1177/1351010X16661564",
language = "English",
volume = "23",
pages = "131--143",
journal = "Building Acoustics",
issn = "1351-010X",
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}

Benchmarking new wood fibre-based sound absorbing material made with a foam-forming technique. / Pöhler, Tiina (Corresponding Author); Jetsu, Petri; Isomoisio, Heikki.

In: Building Acoustics, Vol. 23, No. 3-4, 2016, p. 131-143.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Benchmarking new wood fibre-based sound absorbing material made with a foam-forming technique

AU - Pöhler, Tiina

AU - Jetsu, Petri

AU - Isomoisio, Heikki

N1 - SDA: SHP: Bioeconomy Project code: 83000

PY - 2016

Y1 - 2016

N2 - A new sound absorbing material made from 100% softwood fibres by means of a foam-forming technique is introduced. In foam forming, a wet foam is created by mechanically mixing water, fibres and a surfactant. The air bubbles keep the wet fibres separate, and a highly porous fibre network is formed during drying. The sound absorption of foam-formed structures was measured by means of an impedance tube. The results showed that foam-formed softwood materials possessed a competitive sound absorption coefficient compared to different types of commercial sound absorber materials. The material is based on 100% softwood fibres without added binders and is semi-rigid and does not completely recover from compression. Improvement in the strength properties of softwood material can be obtained by using starch or cellulose microfibrils. The material could be used in indoor applications, for example, in replacing mineral wool acoustic ceiling panels or polyester non-woven materials in office acoustics products.

AB - A new sound absorbing material made from 100% softwood fibres by means of a foam-forming technique is introduced. In foam forming, a wet foam is created by mechanically mixing water, fibres and a surfactant. The air bubbles keep the wet fibres separate, and a highly porous fibre network is formed during drying. The sound absorption of foam-formed structures was measured by means of an impedance tube. The results showed that foam-formed softwood materials possessed a competitive sound absorption coefficient compared to different types of commercial sound absorber materials. The material is based on 100% softwood fibres without added binders and is semi-rigid and does not completely recover from compression. Improvement in the strength properties of softwood material can be obtained by using starch or cellulose microfibrils. The material could be used in indoor applications, for example, in replacing mineral wool acoustic ceiling panels or polyester non-woven materials in office acoustics products.

KW - noise control

KW - sound absorption

KW - foam forming

KW - natural fibre

KW - organic fibre

KW - softwood

U2 - 10.1177/1351010X16661564

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JO - Building Acoustics

JF - Building Acoustics

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ER -