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Das, Oisik
Publications (6 of 6) Show all publications
Das, O., Hedenqvist, M. S., Johansson, E., Olsson, R., Loho, T. A., Capezza, A. J., . . . Holder, S. (2019). An all-gluten biocomposite: Comparisons with carbon black and pine char composites. Composites. Part A, Applied science and manufacturing, 120, 42-48
Open this publication in new window or tab >>An all-gluten biocomposite: Comparisons with carbon black and pine char composites
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2019 (English)In: Composites. Part A, Applied science and manufacturing, ISSN 1359-835X, E-ISSN 1878-5840, Vol. 120, p. 42-48Article in journal (Refereed) Published
Abstract [en]

Three different charcoals (gluten char, pine bark char and carbon black) were used to rectify certain property disadvantages of wheat gluten plastic. Pyrolysis process of gluten was investigated by analysing the compounds released at different stages. Nanoindentation tests revealed that the gluten char had the highest hardness (ca. 0.5 GPa) and modulus (7.8 GPa) followed by pine bark char and carbon black. The addition of chars to gluten enhanced the indenter-modulus significantly. Among all the charcoals, gluten char was found to impart the best mechanical and water resistant properties. The addition of only 6 wt% gluten char to the protein caused a substantial reduction in water uptake (by 38%) and increase of indenter-modulus (by 1525%). It was shown that it is possible to obtain protein biocomposites where both the filler and the matrix are naturally sourced from the same material, in this case, yielding an all-gluten derived biocomposite.

Place, publisher, year, edition, pages
Elsevier, 2019
Keywords
(Nominated) Biochar, A. Biocomposite, A. Polymer-matrix composites (PMCs), B. Hardness
National Category
Polymer Technologies
Identifiers
urn:nbn:se:kth:diva-246431 (URN)10.1016/j.compositesa.2019.02.015 (DOI)000463304100006 ()2-s2.0-85062035485 (Scopus ID)
Note

QC 20190402

Available from: 2019-04-02 Created: 2019-04-02 Last updated: 2019-04-29Bibliographically approved
Das, O., Hedenqvist, M. S., Prakash, C. & Lin, R. J. T. (2019). Nanoindentation and flammability characterisation of five rice husk biomasses for biocomposites applications. Composites. Part A, Applied science and manufacturing, 125, Article ID UNSP 105566.
Open this publication in new window or tab >>Nanoindentation and flammability characterisation of five rice husk biomasses for biocomposites applications
2019 (English)In: Composites. Part A, Applied science and manufacturing, ISSN 1359-835X, E-ISSN 1878-5840, Vol. 125, article id UNSP 105566Article in journal (Refereed) Published
Abstract [en]

Five different rice husks (RHs) having different geographical origins were characterised for their mechanical and fire reaction properties using nanoindentation and cone calorimetry, respectively. Analyses relating to ash and extractives contents, density and morphologies were also performed. The RHs had statistically similar extractives content, nanoindentation properties and peak heat release rates (PHRRs). The polypropylene-based composites made from these RHs also had insignificant differences in their tensile moduli, elongation and PHRR values. The RH inclusion conserved the tensile/flexural strengths while enhancing the moduli of the composites, as compared to the neat polypropylene. The material characteristics being ubiquitous amongst the different RH types enable the creation of biocomposites with foreseeable performance properties. Moreover, the individual nanoindentation and fire reaction properties of the RI-Is allowed the presaging of the bulk biocomposites' properties using theoretical models. Good agreements between predicted and experimental moduli/PHRRs were achieved using rule of mixtures and Halpi-Pegano models.

Place, publisher, year, edition, pages
ELSEVIER SCI LTD, 2019
Keywords
Biocomposite, Polymer-matrix composites (PMCs), Flame/fire retardancy, Mechanical properties
National Category
Polymer Chemistry
Research subject
Fibre and Polymer Science
Identifiers
urn:nbn:se:kth:diva-261000 (URN)10.1016/j.compositesa.2019.105566 (DOI)000484878200042 ()2-s2.0-85070214885 (Scopus ID)
Note

QC 20191010

Available from: 2019-10-10 Created: 2019-10-10 Last updated: 2019-11-26Bibliographically approved
Das, O., Rasheed, F., Kim, N. K., Johansson, E., Capezza, A. J., Kalamkarov, A. L. & Hedenqvist, M. S. (2019). The development of fire and microbe resistant sustainable gluten plastics. Journal of Cleaner Production, 222, 163-173
Open this publication in new window or tab >>The development of fire and microbe resistant sustainable gluten plastics
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2019 (English)In: Journal of Cleaner Production, ISSN 0959-6526, E-ISSN 1879-1786, Vol. 222, p. 163-173Article in journal (Refereed) Published
Abstract [en]

This study shows the improvement of fire and microbe resistance of sustainable (protein) plastics (i.e. wheat gluten, WG), by using triethylene glycol diamine and dialdehyde. In addition, an anti-microbial agent (lanosol) was also used separately and in combination with the diamine/dialdehyde. The network formed by the diamine and dialdehyde, during the production of compression-moulded plates, resulted in high fire performance index, large amount of char and low thermal decomposition rate. The best fire resistance was obtained by the combination of the dialdehyde and lanosol, which also yielded a char with the intact surface. The peak-heat-release-rate of this material was only 38% of that of the pure gluten material. This material also showed anti-bacterial (E. coli) properties. However, the diamine was more effective than the combination of dialdehyde/lanosol. Gluten materials with diamine resisted mould growth during a 22 days test at a relative humidity of 100%. The gluten material with the lanosol applied to the sample surface resisted mould growth during a three-week test at both ambient temperature and 37 degrees C. Despite the relatively high contents of the difunctional reagents used (15 wt%), leading to an increased stiffness in most cases, only the network formed with glyoxal resulted in a decrease in water uptake as compared to the pure gluten material.

Place, publisher, year, edition, pages
ELSEVIER SCI LTD, 2019
Keywords
Wheat gluten, Fire-retardant, Microbial, Sustainable, Moisture
National Category
Polymer Chemistry
Identifiers
urn:nbn:se:kth:diva-252365 (URN)10.1016/j.jclepro.2019.03.032 (DOI)000466249500015 ()2-s2.0-85062839529 (Scopus ID)
Note

QC 20190718

Available from: 2019-07-18 Created: 2019-07-18 Last updated: 2019-07-18Bibliographically approved
Das, O., Loho, T. A., Capezza, A. J., Lemrhari, I. & Hedenqvist, M. S. (2018). A Novel Way of Adhering PET onto Protein (Wheat Gluten) Plastics to Impart Water Resistance. Coatings, 8(11), Article ID 388.
Open this publication in new window or tab >>A Novel Way of Adhering PET onto Protein (Wheat Gluten) Plastics to Impart Water Resistance
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2018 (English)In: Coatings, ISSN 2079-6412, Vol. 8, no 11, article id 388Article in journal (Refereed) Published
Abstract [en]

This study presents an approach to protect wheat gluten (WG) plastic materials against water/moisture by adhering it with a polyethylene terephthalate (PET) film using a diamine (Jeffamine (R)) as a coupling agent and a compression molding operation. The laminations were applied using two different methods, one where the diamine was mixed with the WG powder and ground together before compression molding the mixture into plates with PET films on both sides. In the other method, the PET was pressed to an already compression molded WG, which had the diamine brushed on the surface of the material. Infrared spectroscopy and nanoindentation data indicated that the diamine did act as a coupling agent to create strong adhesion between the WG and the PET film. Both methods, as expected, yielded highly improved water vapor barrier properties compared to the neat WG. Additionally, these samples remained dimensionally intact. Some unintended side effects associated with the diamine can be alleviated through future optimization studies.

Place, publisher, year, edition, pages
MDPI, 2018
Keywords
PET, lamination, nanoindentation, water vapor barrier, interface
National Category
Chemical Sciences
Identifiers
urn:nbn:se:kth:diva-240006 (URN)10.3390/coatings8110388 (DOI)000451152400015 ()
Note

QC 20181210

Available from: 2018-12-10 Created: 2018-12-10 Last updated: 2018-12-10Bibliographically approved
Das, O., Kim, N. K., Hedenqvist, M. S., Lin, R. J. T., Sarmah, A. K. & Bhattacharyya, D. (2018). An Attempt to Find a Suitable Biomass for Biochar-Based Polypropylene Biocomposites. Environmental Management, 62(2), 403-413
Open this publication in new window or tab >>An Attempt to Find a Suitable Biomass for Biochar-Based Polypropylene Biocomposites
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2018 (English)In: Environmental Management, ISSN 0364-152X, E-ISSN 1432-1009, Vol. 62, no 2, p. 403-413Article in journal (Refereed) Published
Abstract [en]

Four biomass wastes (rice husk, coffee husk, coarse wool, and landfill wood) were added with biochar and polypropylene (PP) to manufacture biocomposites. Individual biomasses were tested for their combustion behavior using cone calorimeter. Biocomposites were analyzed for their fire/thermal, mechanical, and morphological properties. Wood had the most desirable comprehensive effect on both the mechanical and fire properties of composites. In particular, wood and biochar composite exhibited the highest values of tensile/flexural properties with a relatively low peak heat release rate. In general, application of waste derived biochar and biomasses drastically reduced the susceptibility of neat PP towards fire.

Place, publisher, year, edition, pages
Springer, 2018
Keywords
Biomass, Biocomposite, Biochar, Wastes, Fire
National Category
Environmental Sciences
Identifiers
urn:nbn:se:kth:diva-232754 (URN)10.1007/s00267-018-1033-6 (DOI)000438262300015 ()29594380 (PubMedID)
Note

QC 20180803

Available from: 2018-08-03 Created: 2018-08-03 Last updated: 2019-08-20Bibliographically approved
Piri, I. S., Das, O., Hedenqvist, M. S., Vaisanen, T., Ikram, S. & Bhattacharyya, D. (2018). Imparting resiliency in biocomposite production systems: A system dynamics approach. Journal of Cleaner Production, 179, 450-459
Open this publication in new window or tab >>Imparting resiliency in biocomposite production systems: A system dynamics approach
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2018 (English)In: Journal of Cleaner Production, ISSN 0959-6526, E-ISSN 1879-1786, Vol. 179, p. 450-459Article in journal (Refereed) Published
Abstract [en]

A biocomposite production system (BPS) contains a wide range of elements that are vulnerable to internal as well as external factors that may stimulate a system to be disrupted. Hence, there is a need to manifest resiliency in order to withstand the inevitable change without affecting its robustness and stability. The three aspects of a resilient BPS are interconnectivity, adaptability and transformability. The interconnectivity concept deals with the reliability and effectiveness of the supply chain network and production systems' resourcefulness. The adaptability aspect reinforces the agility and adjusting capacity of a system towards versatility and flexibility across the range of elements involved in the production system. Transformability deals with the capacity of a system to alter into a new system based on research, innovation and creativity. Therefore, the core aspects of resiliency in a BPS would result in increased stability and effectiveness. System dynamics models have been developed depicting the cause and effect of each of the three aspects. Finally, a model has been presented which could enable researchers and organizations to take guided decision towards a more robust and resilient BPS.

Place, publisher, year, edition, pages
ELSEVIER SCI LTD, 2018
Keywords
Resiliency, Biocomposite, Adaptability, Interconnectivity, Sustainability
National Category
Embedded Systems
Identifiers
urn:nbn:se:kth:diva-224003 (URN)10.1016/j.jclepro.2018.01.065 (DOI)000425568700039 ()2-s2.0-85041471962 (Scopus ID)
Note

QC 20180319

Available from: 2018-03-19 Created: 2018-03-19 Last updated: 2018-03-19Bibliographically approved
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