AFM in sudies of thermoplastic starches during ageing

Lauri Kuutti, P. Peltonen, Päivi Myllärinen, Olle Teleman, Pirkko Forssell (Corresponding Author)

Research output: Contribution to journalArticleScientificpeer-review

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Abstract

Atomic force microscopy (AFM) and friction force microscopy (FFM) have been used to characterize the ageing of thermoplastic starch (TPS) films prepared by the extrusion technique, using water and glycerol as plasticizers.
The fresh oat and barley starch films (1 week after extrusion) have flat and homogeneous surfaces. In the older starch films (2–5 weeks), the surface roughness has changed and the friction images reveal surface heterogeneity.
The structural changes are supported by the tip-sample force–distance curve analysis. The changes in the structural properties during ageing i.e. starch–glycerol phase separation, crystallization of starch, or reorientation of polymers, are discussed.
Original languageEnglish
Pages (from-to)7-12
JournalCarbohydrate Polymers
Volume37
Issue number1
DOIs
Publication statusPublished - 1998
MoE publication typeA1 Journal article-refereed

Fingerprint

Starch
Thermoplastics
Atomic force microscopy
Aging of materials
Extrusion
Friction
Plasticizers
Crystallization
Glycerol
Phase separation
Structural properties
Microscopic examination
Polymers
Surface roughness
Water

Cite this

Kuutti, L., Peltonen, P., Myllärinen, P., Teleman, O., & Forssell, P. (1998). AFM in sudies of thermoplastic starches during ageing. Carbohydrate Polymers, 37(1), 7-12. https://doi.org/10.1016/S0144-8617(98)00042-3
Kuutti, Lauri ; Peltonen, P. ; Myllärinen, Päivi ; Teleman, Olle ; Forssell, Pirkko. / AFM in sudies of thermoplastic starches during ageing. In: Carbohydrate Polymers. 1998 ; Vol. 37, No. 1. pp. 7-12.
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Kuutti, L, Peltonen, P, Myllärinen, P, Teleman, O & Forssell, P 1998, 'AFM in sudies of thermoplastic starches during ageing', Carbohydrate Polymers, vol. 37, no. 1, pp. 7-12. https://doi.org/10.1016/S0144-8617(98)00042-3

AFM in sudies of thermoplastic starches during ageing. / Kuutti, Lauri; Peltonen, P.; Myllärinen, Päivi; Teleman, Olle; Forssell, Pirkko (Corresponding Author).

In: Carbohydrate Polymers, Vol. 37, No. 1, 1998, p. 7-12.

Research output: Contribution to journalArticleScientificpeer-review

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T1 - AFM in sudies of thermoplastic starches during ageing

AU - Kuutti, Lauri

AU - Peltonen, P.

AU - Myllärinen, Päivi

AU - Teleman, Olle

AU - Forssell, Pirkko

PY - 1998

Y1 - 1998

N2 - Atomic force microscopy (AFM) and friction force microscopy (FFM) have been used to characterize the ageing of thermoplastic starch (TPS) films prepared by the extrusion technique, using water and glycerol as plasticizers. The fresh oat and barley starch films (1 week after extrusion) have flat and homogeneous surfaces. In the older starch films (2–5 weeks), the surface roughness has changed and the friction images reveal surface heterogeneity. The structural changes are supported by the tip-sample force–distance curve analysis. The changes in the structural properties during ageing i.e. starch–glycerol phase separation, crystallization of starch, or reorientation of polymers, are discussed.

AB - Atomic force microscopy (AFM) and friction force microscopy (FFM) have been used to characterize the ageing of thermoplastic starch (TPS) films prepared by the extrusion technique, using water and glycerol as plasticizers. The fresh oat and barley starch films (1 week after extrusion) have flat and homogeneous surfaces. In the older starch films (2–5 weeks), the surface roughness has changed and the friction images reveal surface heterogeneity. The structural changes are supported by the tip-sample force–distance curve analysis. The changes in the structural properties during ageing i.e. starch–glycerol phase separation, crystallization of starch, or reorientation of polymers, are discussed.

U2 - 10.1016/S0144-8617(98)00042-3

DO - 10.1016/S0144-8617(98)00042-3

M3 - Article

VL - 37

SP - 7

EP - 12

JO - Carbohydrate Polymers

JF - Carbohydrate Polymers

SN - 0144-8617

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