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Principles of polymer engineering
TLDR
In this article, the elastic properties of polymeric solids and their properties of rubber are discussed. But they focus on the structure of the molecule rather than the properties of the solids.Abstract:
Introduction. 1: Structure of the molecule. 2: Structure of polymeric solids. 3: The elastic properties of rubber. 4: Viscoelasticity. 5: Yield and fracture. 6: Reinforced polymers. 7: Forming. 8: Design. Further reading, Answers, Indexread more
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Patent
Process for the production of an abuse-proofed dosage form
TL;DR: In this paper, a process for the production of abuse-proofed, thermoformed dosage forms containing, apart from one or more active ingredients with potential for abuse and optionally physiologically acceptable auxiliary substances, at least one synthetic or natural polymer with a breaking strength of at least 500 N.
Journal ArticleDOI
Effectiveness of cuticular transpiration barriers in a desert plant at controlling water loss at high temperatures
Ann-Christin Schuster,Markus Burghardt,Ahmed H. Alfarhan,Amauri Bueno,Rainer Hedrich,Jana Leide,Jacob Thomas,Markus Riederer +7 more
TL;DR: It is proposed that the triterpenoids deposited within the cutin matrix restrict the thermal expansion of the polymer and, thus, prevent thermal damage to the highly ordered aliphatic wax barrier even at high temperatures.
Journal ArticleDOI
Study of surface damage of polypropylene under progressive loading
TL;DR: In this paper, a systematic study of surface damage exerted by a progressive scratching load on model polypropylene (PP) systems was performed, and it was found that the onset of scratch visibility can be determined accurately and reproducibly using the custom-built scratcher under progressive loading condition.
Journal ArticleDOI
Kremer-Grest models for commodity polymer melts: Linking theory, experiment and simulation at the Kuhn scale
TL;DR: In this paper, it is shown that by tuning the chain stiffness, it is possible to adapt the Kremer-Grest (KG) model to model melts of real polymers and provide mapping relations from KG to SI units for a wide range of commodity polymers.
Patent
Crush resistant delayed-release dosage forms
TL;DR: In this paper, the authors defined a dosage form comprising a physiologically effective amount of a physically active substance (A), a synthetic, semi-synthetic or natural polymer (C), optionally one or more physiologically acceptable auxiliary substances (B) and optionally a synthetic or natural wax (D), where the dosage form exhibits a resistance to crushing of at least 400 N and wherein under physiological conditions the release of the physiologically active substance from the dosage forms is at least partially delayed.