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Biopolymers: Utilizing Nature's Advanced Materials (ACS by Syed H. Imam, Richard V. Greene, Baqar R. Zaidi PDF

By Syed H. Imam, Richard V. Greene, Baqar R. Zaidi

ISBN-10: 0841236070

ISBN-13: 9780841236073

This booklet examines biotechnological, chemical, and engineering features of biopolymers and their blends. It specializes in processing and characterization, biopolymer synthesis and degradation, and new purposes. bankruptcy subject matters comprise biodegradable plastics, environmental cleanup, nanocomposite matrices, salient enzymology, innovations for tracking bioplastics in dwelling cells, and biopolymers for nutrients packaging. fabrics mentioned comprise starch and cellulosics (including xylans), chitin, proteins, long-chain fatty acids, mesquite gums, and lignin.

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Extra info for Biopolymers: Utilizing Nature's Advanced Materials (ACS Symposium)

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The jet with a low concentration readily breaks into droplets, and a mixture of fibres and droplets is generated as a result of low viscosity. Conversely, jets with a high concentration do not break up, but instead travel to the target and tend to facilitate the formation of fibres without beads and droplets. In this case, fibres become more uniform and have a regular morphology. In the electrospinning of SF, if the silk concentration was >10%, thin, rod-like fibres with diameters ranging from 60 nm to 450 nm were obtained.

Furthermore, fibre dimensions were significantly increased to the range 500 nm to 4100 nm, with 1100 nm being the most common. 5. 7 Experimental Design RSM is a collection of mathematical and statistical techniques for empirical model building (see the Appendix). By careful design of experiments, the objective is to optimise a response (output variable) which is influenced by several independent variables (input variables). An experiment is a series of tests called ‘runs’ in which changes are made in the input variables to identify the reasons for changes in the output response.

Very small fibre diameters, large surface area to mass ratio, high porosity, small pore sizes, flexibility), electrospun nanofibre mats have found numerous applications in diverse areas. For example, in the biomedical field, nanofibres play a substantial part in tissue engineering, drug delivery, and wound dressing. Electrospinning is a sophisticated and efficient method by which fibres are produced with diameters in the nanometre range (hence the term ‘nanofibres’. In the electrospinning process, a strong electric field is applied on a droplet of polymer solution (or melt) held by its surface tension at the tip of a syringe needle (or capillary tube).

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Biopolymers: Utilizing Nature's Advanced Materials (ACS Symposium) by Syed H. Imam, Richard V. Greene, Baqar R. Zaidi


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