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Viscosity of extracts from Pinus radiata bark


, : Viscosity of extracts from Pinus radiata bark. Holzforschung 38(2): 79-84

The viscosities of solutions of extracts from the bark of radiata pine and their fractions were investigated over a range of temp., pH and solids concn. The solutions of the extracts and their fractions were non-Newtonian liquids and showed a pseudoplastic flow; thixotropic or hysteresis flow characteristics also appeared. The appearance of the thixotropic and hysteresis flows appeared to be correlated with the existence of particles and their dispersion and aggregation in the liquids.

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Accession: 001507871

DOI: 10.1515/hfsg.1984.38.2.79

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Related references

Yazaki, Y.; Collins, P.J., 1994: Wood adhesives from high yield Pinus radiata bark extracts treated by a simple viscosity reduction process. A simple process is presented for producing high quality adhesive from bark extracts of Pinus radiata. The gluing conditions and gluebond quality of 3 adhesives made from the extracts are tabulated and show satisfactory performance.

Yazaki Y.; Hillis W.E., 1980: Molecular size distribution of radiata pine pinus radiata bark extracts and its effect on properties. Various aqueous extracts from P. radiata and Acacia mearnsii barks were fractionated by ultrafiltration on the basis of molecular size. All the monomeric, dimeric and oligomeric compounds were concentrated in the fraction containing compounds with...

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