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Open Access
Book part
Publication date: 4 May 2018

Rozanna Dewi, Nasrun Ibrahim, Novi Sylvia, Dahlan Abdullah and Medyan Riza

Purpose – The purpose of this research is to synthesize modified thermoplastic sago starch (TPS) through in-situ mechanism by reacting sago starch with diphenylmethanediisocyanate…

Abstract

Purpose – The purpose of this research is to synthesize modified thermoplastic sago starch (TPS) through in-situ mechanism by reacting sago starch with diphenylmethanediisocyanate (MDI) and castor oil simultaneously, resulting in a more homogenous and finer-sized polyurethane prepolymer (PUP).

Design/Methodology/Approach – The methods used were Thermal Gravimetric Analysis (TGA) and Differential Scanning Calorimetry (DSC) for thermal characterization and stability of PUP, modified TPS non-extracted and extracted with toluene and water.

Findings – TGA test results presented shows that PUP begins to decompose thermally at a temperature of 300–500 °C. Weight loss occurs rapidly between these temperatures and is completely discharged at a temperature of 500°C, which is called weight loss transition.

Research Limitations/Implications – When extracted with toluene and a water solvent, the melting point and latent heat of fusion slightly decreased; however, it is still higher than the original value of sago. In terms of thermal stability, modified TPS decomposes and loses weight at 150–200 °C in small quantities, continues with weight loss rapidly, and is completely discharged at 500°C. The thermal stability is considered high; thus, modified TPS application can be varied.

Practical Implications – DSC analysis and TGA shows that modified TPS has good thermal characteristics and thermal stability. Modified TPS has a melting point of 104.69°C, and the latent heat of fusion (ΔH) is 234.27 J/g. This value is close to the PUP melting point and latent heat of fusion, which reveals the formation of cross-link between the starch and PUP.

Open Access
Book part
Publication date: 14 December 2023

Katrin Deckert

Ah la famille …! We tend to say that we do not choose it. But there are beautiful family stories, even in business, and particularly in France. Indeed, when it comes to business…

Abstract

Ah la famille …! We tend to say that we do not choose it. But there are beautiful family stories, even in business, and particularly in France. Indeed, when it comes to business, the French take family as a serious matter – with about 80% of all companies in the country family controlled. Whether big or small, French family businesses are particularly noticeable in sectors such as food and beverages, as well as luxury.

The chapter gives a general overview of family firms in France, considering in particular their main legal structures, how diverse they are in reality, and finally their governance rules, and notably their family constitutions. It concludes that business and family stories often prove to be a good match, at least in France.

Details

Family Firms and Family Constitution
Type: Book
ISBN: 978-1-83797-200-5

Keywords

Abstract

Details

The Political Economy of Antitrust
Type: Book
ISBN: 978-0-44453-093-6

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