Methodological approach for the sustainable design of structured chemical products during early design stages

Abstract : Emulsion based chemical products, which belong to the category of micro-structured chemical products, have a broad range of commercial applications. Despite their importance, there is not a general methodology for their design. With the aim to contribute to the progress on this matter, this research presents a product design methodology focused on emulsion design with the following characteristics: it proposes methods for customer needs analysis, product ideas generation and selection of the best product alternative. It considers the multivariate nature of emulsion design by taking into account the multiple effects of design variables into product properties. It integrates sustainability concepts into the product design process. The methodology comprises three design stages: needs stage, ideas generation stage and ideas selection stage. In the needs stage, customer needs are first analyzed and classified according to their effect on customer satisfaction and second translated into product specifications with the aid of experts and customers. The input is customer needs, i.e., statements expressing customers’ desires about the product, and the output corresponds to product specifications, i.e., product characteristics that can be measured. To perform this stage two methods are used: Kano model and Quality Functional Deployment. In ideas generation stage, product concepts accomplishing product specifications are generated in three sub-steps: First, problem specifications are classified into a predefined group of design sub-problems. Second, each sub-problem is connected with one or more pre-defined solution strategies through a prefilled relational matrix. Third, compatible solution strategies are selected and connected to ingredients and processing conditions through a second relational matrix. As result, a set of product concepts is generated. Thisprocedure is developed by the implementation of two relational matrices proposed in this research based on emulsion science and expert knowledge. The first connects sub-problems with solution strategies and the second connects solution strategies with ingredients and processing conditions. In the selection stage, generated product concepts are evaluated according to product specifications. In addition, appropriated sustainability indicators are included to assess and rank product alternatives according to a global sustainability index. To perform this stage, a set of indicators are selected and integrated by the implementation of multi-criteria analysis methods. The application of the methodology is exposed with a case study: the design of a moisturizing cream.
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Theses
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http://docnum.univ-lorraine.fr/ulprive/DDOC_T_2018_0219_SERNA_RODAS.pdf
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https://hal.univ-lorraine.fr/tel-02122781
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Submitted on : Tuesday, May 7, 2019 - 3:15:05 PM
Last modification on : Wednesday, September 18, 2019 - 9:42:09 AM

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Juliana Serna Rodas. Methodological approach for the sustainable design of structured chemical products during early design stages. Chemical and Process Engineering. Université de Lorraine; Universidad nacional de Colombia, 2018. English. ⟨NNT : 2018LORR0219⟩. ⟨tel-02122781⟩

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