Abstract：
:Aggregation properties of Gelatin chains in neutral aqueous solutions, are reported in the temperature range T = 35-60 degrees C, from the measured intrinsic viscosity [eta], diffusion coefficient, D(o), molecular weight Mw, and radius of gyration (Rg) data. Gelatin chains doubled their size as the solution was cooled to 35 degrees C from 60 degrees C. The intermolecular interaction was found to be repulsive which showed significant decrease as the temperature was reduced. The data provides excellent fitting to the scaling relations Mw[eta] = (1.96 +/- 0.06) x 10(-26)(Re,eta/Re,D)3(D(o) eta o/T)-3 and (D(o)n1/2)-1 approximately equal to (6 1/2 pie eta o chi beta/kB/T)[1 + 0.201(v/beta 3)n1/2] where n is the number of segments in the chain. The ratio of the hydrodynamic radius (Re,D) (deduced from D(o)) and Rg, (Re,D/Rg = zeta) was found to be 0.555. From the known solvent viscosity eta o, the segment length beta, was deduced to be (15 +/- 2) A. The deduced excluded volume was v approximately equal to (4.1 A)3. The Flory-Huggins interaction parameter (zeta) did not show observable temperature dependence.
journal_name
Int J Biol Macromoljournal_title
International journal of biological macromoleculesauthors
Bohidar HBdoi
10.1016/s0141-8130(98)00003-8subject
Has Abstractpub_date
1998-07-01 00:00:00pages
1-6issue
1eissn
0141-8130issn
1879-0003pii
S0141-8130(98)00003-8journal_volume
23pub_type
杂志文章abstract：:Water soluble keratose proteins were obtained from an Ovis Aries wool using peracetic acid oxidation. The wool samples and the extracted keratose proteins were characterized by using FTIR, XRD, SEM and TGA techniques. Fractions of α-keratose (MW = 43-53 kDa) along with protein species with molecular weights between 23...
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journal_title：International journal of biological macromolecules
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pub_type： 撤回出版物
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journal_title：International journal of biological macromolecules
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journal_title：International journal of biological macromolecules
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journal_title：International journal of biological macromolecules
pub_type： 杂志文章
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journal_title：International journal of biological macromolecules
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journal_title：International journal of biological macromolecules
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journal_title：International journal of biological macromolecules
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journal_title：International journal of biological macromolecules
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journal_title：International journal of biological macromolecules
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journal_title：International journal of biological macromolecules
pub_type： 杂志文章
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更新日期：2018-09-01 00:00:00
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journal_title：International journal of biological macromolecules
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journal_title：International journal of biological macromolecules
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journal_title：International journal of biological macromolecules
pub_type： 杂志文章
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更新日期：2019-10-15 00:00:00
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journal_title：International journal of biological macromolecules
pub_type： 杂志文章
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更新日期：2019-10-15 00:00:00
abstract：:An analysis of the possible modes of motion of water molecules in polysaccharide gels indicates that the interpretation of NMR results does not require the supposition of a class of 'bound water' with highly perturbed motional states. There may, however, be water molecules associated with junction zones in the gels wh...
journal_title：International journal of biological macromolecules
pub_type： 杂志文章,评审
doi：10.1016/s0141-8130(97)00045-7
更新日期：1997-08-01 00:00:00
