Preparation and characterization of polymeric films based on PLA, PBAT and corn starch and babassu mesocarp starch by flat extrusion

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Abstract

This research aims to evaluate the application of babassu mesocarp starch in the development of polymeric films compared to corn starch widely exploited due to its abundance and worldwide availability. Thus, films based on blends of poly(lactic acid)/poly(butylene adipate-co-terephthalate) (PLA/PBAT) containing commercial corn starch or starch extracted from the babassu mesocarp were developed by means of flat extrusion. The films were characterized and the results indicate that the color, wettability and surfaces depend on the type of starch added. Films containing babassu mesocarp starch present rougher, opaque surfaces with greater water resistance than those with corn starch. The data from this research suggest that both babassu mesocarp and corn starch are alternatives for the production of polymeric films.

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Resistant Starch?A Review

M.G. Sajilata, Rekha S Singhal, Pushpa R. Kulkarni (2006)

The concept of resistant starch (RS) has evoked new interest in the bioavailability of starch and in its use as a source of dietary fiber, particularly in adults. RS is now considered to provide functional properties and find applications in a variety of foods. Types of RS, factors influencing their formation, consequence of such formation, their methods of preparation, their methods of estimation, and health benefits have been briefly discussed in this review.

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Physicochemical properties, modifications and applications of starches from different botanical sources

Sylvia Alcázar-Alay, Maria Angela Almeida Meireles (2015)

Present trends towards technologies and processes that increase the use of residues make starchy vegetal biomass an important alternative material in various applications due to starch’s versatility, low cost and ease of use when its physicochemical properties are altered. Starch is increasingly used in many industrial applications and as a renewable energy resource. Starch can be modified to enhance its positive attributes and eliminate deficiencies in its native characteristics. In this article, the state of knowledge on conventional and unconventional starches and their properties, characteristics, modifications and applications are reviewed.

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A review on the wettability of dental implant surfaces I: theoretical and experimental aspects.

Frank Rupp, Rolando A Gittens, Lutz Scheideler … (2014)

The surface wettability of biomaterials determines the biological cascade of events at the biomaterial/host interface. Wettability is modulated by surface characteristics, such as surface chemistry and surface topography. However, the design of current implant surfaces focuses mainly on specific micro- and nanotopographical features, and is still far from predicting the concomitant wetting behavior. There is an increasing interest in understanding the wetting mechanisms of implant surfaces and the role of wettability in the biological response at the implant/bone or implant/soft tissue interface. Fundamental knowledge related to the influence of surface roughness (i.e. a quantification of surface topography) on titanium and titanium alloy surface wettability, and the different associated wetting regimes, can improve our understanding of the role of wettability of rough implant surfaces on the biological outcome. Such an approach has been applied to biomaterial surfaces only in a limited way. Focusing on titanium dental and orthopaedic implants, the present study reviews the current knowledge on the wettability of biomaterial surfaces, encompassing basic and applied aspects that include measurement techniques, thermodynamic aspects of wetting and models predicting topographical and roughness effects on the wetting behavior.