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Untersuchung der einstufigen Gasphasenhydrierung von Dimethylmaleat zur Hertellung von gamma-Butyrolacton, 1,4-Butandiol und Tetrahydrofuran

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ISBN: 3937300651 Year: Pages: 121 p. DOI: 10.5445/KSP/1000003408 Language: GERMAN
Publisher: KIT Scientific Publishing
Subject: Chemical Engineering
Added to DOAB on : 2019-07-30 20:01:58
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Abstract

Für die Herstellung von 1,4-Butandiol haben neben dem technisch ausgereiften Reppe-Prozess in den letzten Jahren neue Synthesetechnologien an Bedeutung gewonnen. Hierzu zählt die Gasphasenhydrierung von Dimethylmaleat, der Davy-Prozess.Vorteile sind die milden Reaktionsbedingungen und die kombinierte Herstellung von 1,4-Butandiol mit den Folgeprodukten g-Butyrolacton und Tetrahydrofuran. Gegenstand der vorliegenden Arbeit war die gezielte Vermeidung von ungewollter Polymerbildung bei der einstufigen Prozessführung der Gasphasenhydrierung von Dimethylmaleat. Zudem wurden mit einem Cu/ZnO/Al2O3-Katalysator detaillierte kinetische Messungen durchgeführt und eine qualitative und quantitative Beschreibung der Reaktionskinetik mit Hilfe eines möglichst einfachen Reaktionsnetzes realisiert.

Intrinsically Biocompatible Polymer Systems

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ISBN: 9783039284207 9783039284214 Year: Pages: 270 DOI: 10.3390/books978-3-03928-421-4 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Technology (General) --- General and Civil Engineering --- Materials
Added to DOAB on : 2020-04-07 23:07:09
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Biocompatibility refers to the ability of a biomaterial to perform its desired function with respect to a medical therapy, without eliciting any undesirable local or systemic effects in the recipient or beneficiary of that therapy, but generating the most appropriate beneficial cellular or tissue response in that specific situation, and optimizing the clinically relevant performance of that therapy, which reflects current developments in the area of intrinsically biocompatible polymer systems. Polymeric biomaterials are presently used as, for example, long-term implantable medical devices, degradable implantable systems, transient invasive intravascular devices, and, recently, as tissue engineering scaffolds. This Special Issue welcomes full papers and short communications highlighting the aspects of the current trends in the area of intrinsically biocompatible polymer systems.

Keywords

antimicrobial peptides --- biodegradable polymers --- biocompatible polymers --- drug delivery systems --- controlled release --- citropin --- temporin --- ionic liquids --- chitooligosaccharide --- polyurethane --- biodegradability --- physicochemical properties --- hemocompatibility --- biological activity --- crosslinking --- drug delivery --- cosmetic --- food-supplement --- functionalization --- hyaluronan applications --- hyaluronan derivatives --- hyaluronan synthases --- hyaluronic acid --- hyaluronidases --- physico-chemical properties --- cyclohexanone --- ?-butyrolactone --- chloroform --- extraction --- polyhydroxyalkanoates --- PHB --- electrospraying --- biodegradable nano/microparticles --- drug delivery --- septic arthritis --- release characteristics --- biopolymers --- silk fibroin --- konjac glucomannan --- porous beads --- scaffolds --- tissue engineering --- microcarriers --- Poly (l-lactic) acid --- Chitosan --- nanohydroxyapatite --- osteoblasts --- ion-releasing materials --- shrinkage stress --- water sorption --- hydroscopic expansion --- photoelastic investigation --- enzymatic polymerization --- chemical polymerization --- poly(benzyl malate) --- biocompatible nanoparticles --- cell uptake --- cytotoxicity --- HepaRG cells --- human macrophages --- star polymers --- solution behavior --- ATRP --- SPION --- contrast agent --- MRI --- cancer diagnosis --- folate receptor --- pluronic F127 --- polylactide --- hydrolytic degradation --- mechanical properties --- PEEK copolymer synthesis --- PEEK composite --- Spine cage application --- In vitro biosafety --- degradation --- saliva --- mechanical properties --- molecular weight --- thermal properties --- activation energy of thermal decomposition --- anterior cruciate ligament reconstruction --- bone tunnel enlargement --- X-ray microtomography --- polylactide --- n/a

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