Mechanical and permeability properties of biodegradable extruded starch / polycaprolactone films

Olavi Myllymäki, Päivi Myllärinen, Pirkko Forssell, Tapani Suortti, K. Lähteenkorva, Raija Ahvenainen, Kaisa Poutanen

Research output: Contribution to journalArticleScientificpeer-review

41 Citations (Scopus)

Abstract

Barley starch and glycerol were mixed with polycaprolactone (PCL) powder in various combinations and plasticized in a twin‐screw extruder.
When possible, extrudates were processed into films in a single‐screw extruder and subjected to an orientation process with the aim of improving the water durability and mechanical strength of the starch films.
The mechanical properties, water vapour and oxygen permeabilities, sorption isotherms and solubility of the processed films were studied. The films containing 20% or more PCL achieved a tensile strength of 20 MPa or higher.
Orientation of the film still further improved the tensile strength, and also the water vapour and oxygen barrier properties.
With PCL contents of 0–20% the starch/PCL films proved to be excellent oxygen barriers. Increase in PCL content beyond this impaired the oxygen barrier properties, whilst improving the water barrier properties.
Original languageEnglish
Pages (from-to)265-274
JournalPackaging Technology and Science
Volume11
Issue number6
Publication statusPublished - 1998
MoE publication typeA1 Journal article-refereed

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Polycaprolactone
Starch
Oxygen
Steam
Extruders
Water vapor
Tensile strength
Water
Glycerol
Powders
Strength of materials
Isotherms
starch polycaprolactone
Sorption
Durability
Solubility
Mechanical properties
polycaprolactone

Cite this

Myllymäki, O., Myllärinen, P., Forssell, P., Suortti, T., Lähteenkorva, K., Ahvenainen, R., & Poutanen, K. (1998). Mechanical and permeability properties of biodegradable extruded starch / polycaprolactone films. Packaging Technology and Science, 11(6), 265-274.
Myllymäki, Olavi ; Myllärinen, Päivi ; Forssell, Pirkko ; Suortti, Tapani ; Lähteenkorva, K. ; Ahvenainen, Raija ; Poutanen, Kaisa. / Mechanical and permeability properties of biodegradable extruded starch / polycaprolactone films. In: Packaging Technology and Science. 1998 ; Vol. 11, No. 6. pp. 265-274.
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author = "Olavi Myllym{\"a}ki and P{\"a}ivi Myll{\"a}rinen and Pirkko Forssell and Tapani Suortti and K. L{\"a}hteenkorva and Raija Ahvenainen and Kaisa Poutanen",
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Myllymäki, O, Myllärinen, P, Forssell, P, Suortti, T, Lähteenkorva, K, Ahvenainen, R & Poutanen, K 1998, 'Mechanical and permeability properties of biodegradable extruded starch / polycaprolactone films', Packaging Technology and Science, vol. 11, no. 6, pp. 265-274.

Mechanical and permeability properties of biodegradable extruded starch / polycaprolactone films. / Myllymäki, Olavi; Myllärinen, Päivi; Forssell, Pirkko; Suortti, Tapani; Lähteenkorva, K.; Ahvenainen, Raija; Poutanen, Kaisa.

In: Packaging Technology and Science, Vol. 11, No. 6, 1998, p. 265-274.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Mechanical and permeability properties of biodegradable extruded starch / polycaprolactone films

AU - Myllymäki, Olavi

AU - Myllärinen, Päivi

AU - Forssell, Pirkko

AU - Suortti, Tapani

AU - Lähteenkorva, K.

AU - Ahvenainen, Raija

AU - Poutanen, Kaisa

PY - 1998

Y1 - 1998

N2 - Barley starch and glycerol were mixed with polycaprolactone (PCL) powder in various combinations and plasticized in a twin‐screw extruder. When possible, extrudates were processed into films in a single‐screw extruder and subjected to an orientation process with the aim of improving the water durability and mechanical strength of the starch films. The mechanical properties, water vapour and oxygen permeabilities, sorption isotherms and solubility of the processed films were studied. The films containing 20% or more PCL achieved a tensile strength of 20 MPa or higher. Orientation of the film still further improved the tensile strength, and also the water vapour and oxygen barrier properties. With PCL contents of 0–20% the starch/PCL films proved to be excellent oxygen barriers. Increase in PCL content beyond this impaired the oxygen barrier properties, whilst improving the water barrier properties.

AB - Barley starch and glycerol were mixed with polycaprolactone (PCL) powder in various combinations and plasticized in a twin‐screw extruder. When possible, extrudates were processed into films in a single‐screw extruder and subjected to an orientation process with the aim of improving the water durability and mechanical strength of the starch films. The mechanical properties, water vapour and oxygen permeabilities, sorption isotherms and solubility of the processed films were studied. The films containing 20% or more PCL achieved a tensile strength of 20 MPa or higher. Orientation of the film still further improved the tensile strength, and also the water vapour and oxygen barrier properties. With PCL contents of 0–20% the starch/PCL films proved to be excellent oxygen barriers. Increase in PCL content beyond this impaired the oxygen barrier properties, whilst improving the water barrier properties.

M3 - Article

VL - 11

SP - 265

EP - 274

JO - Packaging Technology and Science

JF - Packaging Technology and Science

SN - 0894-3214

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Myllymäki O, Myllärinen P, Forssell P, Suortti T, Lähteenkorva K, Ahvenainen R et al. Mechanical and permeability properties of biodegradable extruded starch / polycaprolactone films. Packaging Technology and Science. 1998;11(6):265-274.