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Finding solvent for polyamide 11 using a computer software
University of Borås, Faculty of Textiles, Engineering and Business.ORCID iD: 0000-0002-1404-9134
University of Borås, Faculty of Textiles, Engineering and Business.
Department of Chemistry, Ångström Laboratory, Uppsala University.
University of Borås, Faculty of Textiles, Engineering and Business.ORCID iD: 0000-0002-6596-8069
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2019 (English)In: Zeitschrift für Physikalische Chemie, ISSN 0942-9352Article in journal (Refereed) Epub ahead of print
Sustainable development
According to the author(s), the content of this publication falls within the area of sustainable development.
Abstract [en]

The solvent finding step has always been a time-consuming job in chemical-involved processes. The source of difficulty mainly comes from the trial-and-errors, as a repetitive process of chosing solvents and mixing them in different proportions. Computers are good at doing repetitive processes; however, they can only deal with numerical values, rather than qulitative scales. Numerification of qualitative parameters (like solubility) has already been introduced. The most recent one is the Hansen solubility parameters (HSPs). Using the HSPs could provide a solvent or solvent-mixture. In our previous study, we introduced a computer-aided model and a software to find a solvent mixture. In this study, we have used the computer-aided solvent selection model to find some solvent mixtures for polyamide 11, a biobased polymer which has attracted enormous attention recently. Using this numerical model significantly diminished the time of solvent development experimentation by decreasing the possible/necessary trials.

Place, publisher, year, edition, pages
2019.
Keywords [en]
Hansen solubility parameters, polyamide 11, nylon, solvent mixture, solvent screening, solvent substitution, the Simplex method
National Category
Industrial Biotechnology
Research subject
Resource Recovery; Resource Recovery; Resource Recovery
Identifiers
URN: urn:nbn:se:hb:diva-22385DOI: 10.1515/zpch-2018-1299OAI: oai:DiVA.org:hb-22385DiVA, id: diva2:1383430
Available from: 2020-01-08 Created: 2020-01-08 Last updated: 2020-01-14Bibliographically approved
In thesis
1. Material development for textile bioreactor: All-polyamide composite for construction of bioreactors
Open this publication in new window or tab >>Material development for textile bioreactor: All-polyamide composite for construction of bioreactors
2019 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

Bioreactors are manufactured from stainless/carbon steel, concrete, glass, etc., which are costly and time-consuming to install. Recently, several research studies have been initiated to find cost-efficient materials for constructing bioreactors, one of which is coated textiles. Polyvinyl chloride (PVC)-coated polyester textile (PVCT) has been used for this purpose to make bioreactors more cost-effective and easier to install. In this thesis, the thermal insulation property of PVCT was improved, that enhances the energy efficiency of the process carried out within the bioreactor. However, recycling PVCT is challenging, as it is a mixture of PVC, polyester fabric, a plasticizer for the PVC, chemical linkers, and other processing-aid additives. A possible solution to address these issues is to use a coated textile composed of a single material. The polyester fabric can be replaced with a better performing fabric, such as polyamide, that generally has a longer lifetime as well as higher mechanical stability and is light-weight. A facile method was introduced to make a same-polymer coated textiles composite out of polyamide through the partial dissolution of the fabric’s surface followed by coagulation. The all-polyamide composite coated textiles (APCT) is mechanically stronger and more thermally stable than the PVCT as well as having less weight. Additionally, the APCT is fully recyclable as it contains only a single component. This property can be beneficial for the recyclability of the material. The APCT can be used in the construction of textile bioreactors as well as other applications that require gas-/water-tightness and flexibility at the same time. In addition, a new solvent for polyamide was proposed which can be used for the preparation of the APCT. A computer-assisted theoretical solvent selection method based on the Hansen solubility parameters was also introduced. The findings of this research can increase the economic efficiency of the biofuel production process by decreasing the initial investment. From a technical perspective, the methods introduced in this thesis can encourage researchers in related fields to produce same-polymer composites and find/replace solvent(s) in a more efficient way.

Place, publisher, year, edition, pages
Borås: Högskolan i Borås, 2019
Series
Skrifter från Högskolan i Borås, ISSN 0280-381X ; 94
Keywords
textile bioreactor, biofuel, coated fabric; all-polyamide composite, polyvinyl chloride (PVC), solvent replacement, Hansen solubility parameters (HSPs)
National Category
Materials Chemistry
Research subject
Resource Recovery
Identifiers
urn:nbn:se:hb:diva-15939 (URN)978-91-88838-28-5 (ISBN)978-91-88838-29-2 (ISBN)
Public defence
2020-01-31, E310, Allégatan 1, Borås, 10:00 (English)
Opponent
Available from: 2020-01-08 Created: 2019-04-02 Last updated: 2020-01-08Bibliographically approved

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Jabbari, MostafaLundin, MagnusSkrifvars, MikaelTaherzadeh, Mohammad J

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