The separation of substances and estimation of their relative molecular sizes by the use of columns of starch in water

Lathe, G. H.; Ruthven, C.R.J.

doi:10.1042/bj0620665

Cited by 225 publications

(63 citation statements)

References 12 publications

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“…Chromatography encompasses a family of techniques that use columns to separate proteins based on size [73], charge [74], hydrophobicity [75], or shape [76]. A single chromatographic separation based on a single physical parameter of a protein can be applied to all proteins, but will usually only provide a modest gain in purity.…”

Section: Chromatographymentioning

confidence: 99%

Peptide-based biopolymers in biomedicine and biotechnology

Chow

Nunalee

Lim

et al. 2008

Materials Science and Engineering: R: Reports

280

231

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Peptides are emerging as a new class of biomaterials due to their unique chemical, physical, and biological properties. The development of peptide-based biomaterials is driven by the convergence of protein engineering and macromolecular self-assembly. This review covers the basic principles, applications, and prospects of peptide-based biomaterials. We focus on both chemically synthesized and genetically encoded peptides, including poly-amino acids, elastin-like polypeptides, silk-like polymers and other biopolymers based on repetitive peptide motifs. Applications of these engineered biomolecules in protein purification, controlled drug delivery, tissue engineering, and biosurface engineering are discussed.

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Section: Chromatographymentioning

confidence: 99%

Peptide-based biopolymers in biomedicine and biotechnology

Chow

Nunalee

Lim

et al. 2008

Materials Science and Engineering: R: Reports

280

231

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“…Table 1 shows how much the migration of macromolecules in the electric field is affected by the three-dimensional network structure of the support [221. Starch grains have also been used for the chromatographic separation of amino acids and peptides [23], and of oligo-and polysaccharides [24]. In principle, it is possible to obtain cross-linked macromolecules from any polymerizable monomer by copolymerization with a bifunctional monomer.…”

Section: Gel Formersmentioning

confidence: 99%

Chromatographic Separations on Porous Gels

Determann

1964

Angew. Chem. Int. Ed. Engl.

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the chain-transfer constant of dianisyl disulfide is greater than that of diphenyl disulfide. Among the aliphatic disulfides, only those with strained five-and six-mem-A. Pryor and P. K. Plait [J. Amer. chem. SOC. 85, 1496J have recently investigated the reaction between phenyl radicals and aliphatic disulfides. As the steric hindrance of the disulfide group increases, the free-radical displacement on the sulfur is suppressed in favor of a dehydrogenation by the phenyl radical. The effect of steric hindrance of aliphatic disulfides in a free-radical displacement reaction on the sulfur also manifests itself in the smaller chain-transfer constants of branched disulfides.bered rings react with the inert cyanoisopropyl radical [54]; the greater strain of the five-membered ring manifests itself clearly in the higher rate of reaction on freeradical attack. It should be mentioned that dibenzyl disulfide undergoes free-radical cleavage much more easily than the purely aliphatic disulfides ; the chaintransfer constant is also greater than for aliphatic disulfides.

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“…The influence of the dissolution and drying processes on the molecular weight and polydispersity (PD) of the polymer were analysed by gel permeation chromatography (GPC) to measure qualitative changes in the PBT [28][29][30].…”

Section: Methodsmentioning

confidence: 99%

Complete Recycling of Composite Material Comprising Polybutylene Terephthalate and Copper

et al. 2017

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Abstract:Composite materials comprising plastic and metal parts generate a large amount of waste containing valuable components that are difficult to separate and recycle. We therefore developed an economical solvent-based process for the recovery of costly manufactured composite materials comprising several copper panels over-moulded with a polymeric matrix of polybutylene terephthalate (PBT). We applied the CreaSolv ® Process, which uses proprietary formulations with a low risk to user and environment, in order to dissolve the polymer and retain the inert copper. After separating the metal from the solution, solvent recovery was achieved by means of vacuum distillation and melt degassing extrusion. The recovered solvent was collected and recycled while maintaining its original properties. We tested two candidate solvents with PBT, measuring their impact on the molecular weight (M w ) and polydispersity of the polymer at different residence times and dissolution temperatures. We found that increasing the temperature-time-load had a negative effect on the M w . Both solvents we tested were able to dissolve the polymeric matrix within 30 min and with moderate energy consumption. Furthermore, we found that the exclusion of oxygen during dissolution significantly increases the quality of the recovered polymer and metal. We transferred the process from the laboratory scale to the small-technical scale and produced material for large analytical and mechanical quality evaluation, revealing no decline in the polymer quality by blending with new plastic. The recovered copper met virgin material properties. Therefore, both components of the original composite material have been recovered in a form suitable for reuse.

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The separation of substances and estimation of their relative molecular sizes by the use of columns of starch in water

Cited by 225 publications

References 12 publications

Peptide-based biopolymers in biomedicine and biotechnology

Peptide-based biopolymers in biomedicine and biotechnology

Chromatographic Separations on Porous Gels

Complete Recycling of Composite Material Comprising Polybutylene Terephthalate and Copper

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