Zobrazeno 1 - 10
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pro vyhledávání: '"I. C. Watt"'
Autor:
I. C. Watt, J. D. Leeder
Publikováno v:
Journal of Applied Chemistry. 18:1-4
The contribution of carboxyl groups to the water sorbing properties of keratin has been investigated over the complete water vapour pressure range. A series of partially methylated wools were studied: below 80% R.H. there is a reduction in water cont
Autor:
I. C. Watt, R. L. D'Arcy
Publikováno v:
Journal of Polymer Science: Polymer Symposia. 55:155-166
Water-vapor sorption by a range of biopolymers is reviewed to demonstrate the general similarities in sorption characteristics. The interaction of water and the protein wool keratin is considered in more detail and further analyzed in terms of a thre
Autor:
I. C. Watt
Publikováno v:
Journal of Macromolecular Science: Part A - Chemistry. 14:245-255
Many polymeric substrates which swell on adsorption exhibit sorption hysteresis; the phenomenon is most striking for water sorption by natural polymers and proteins. Some interpretations of hysteresis for swelling systems have invoked the concept tha
Publikováno v:
The Journal of The Textile Institute. 66:28-34
An investigation is reported in which resorcinol–formaldehyde resin treatments were used with annealing to improve the wrinkle-recovery of wool fabrics. Whereas the effects of the individual treatments were additive, the resin appeared to inhibit t
Autor:
I. C. Watt, K. G. McLaren
Publikováno v:
Journal of Polymer Science: Polymer Chemistry Edition. 14:257-264
Wool copolymers with low polymer content (6–18%) have been prepared by radiation grafting techniques. Supercontraction, density, and formic acid vapor sorption measurements have been used to assess changes in the keratin structure produced by the g
Autor:
R. L. D'Arcy, I. C. Watt
Publikováno v:
The Journal of The Textile Institute. 70:298-307
Experiments are described in which wool–water-vapour adsorption isotherms were determined gravimetrically in the temperature range 20–100°C by using a quartz helical spring mounted in an evacuable apparatus. Major factors affecting the measured
Autor:
R. Morris, I. C. Watt
Publikováno v:
Kolloid-Zeitschrift & Zeitschrift für Polymere. 229:34-38
The technique of determining relative melting temperatures from thermal contraction data has been applied to crosslinked keratin fibres. The introduction of additional crosslinks by formaldehyde results in an increased thermal stability but only for
Autor:
I. C. Watt
Publikováno v:
Journal of Applied Polymer Science. 8:1737-1750
The absorption and desorption behavior of organic vapors and wool keratin has been investigated. At low relative vapor pressures sorption is Fickian and the rate of diffusion is determined by the size and configuration of the sorbate molecule. For ab
Publikováno v:
Journal of the Textile Institute Transactions. 57:T137-T147
The significance of eight factors on the yield of polyacrylonitrile polymerized in situ within wool fibres by means of the ferrous-ion-hydrogen peroxide initiatory system has been investigated by a series of experiments. A statistical analysis of the
Autor:
I. C. Watt, J. D. Leeder
Publikováno v:
Journal of the Textile Institute. 59:353-364
Determination of the amount of absorbed water attributable to the various types of side-chain polar groups in wool keratin at humidities of up to 80% r.h. enables a stoichiometric analysis of the wool-water isotherm to be made. The amount absorbed by