the studies report the synthesis of novel graft copolymer of oatmeal. polymethyl methacrylate grafting was carried out on oatmeal backbone via ‘microwave assisted’ approach. the graft copolymers were optimized by varying monomer and can concentration. the synthesized graft copolymers were characterized by intrinsic viscosity, ftir, tga, sem, elemental analysis, number average molecular weight a...

4-chloromethyl styrene (cms) was copolymerized with different monomers such as methyl methacrylate (mma), methyl acrylate (ma), 2-ethylhexyl acrylate (eha) by free radical polymerization method at 70 ±1°c using a,a'-azobis(isobutyronitrile) (aibn) as an initiator. the copolymer compositions were obtained using related 1hnmr spectra and the polydispersity of the copolymers were determined using ...

We analyze the gas separation performance of five polyether-block-amide type copolymers (Pebax® 1657, Renew®, 2533, 3533 and 4533). These codes are composed different hard rubbery segments with proportions. Dense membranes were prepared by casting-solution method studied elemental, thermogravimetric X-ray diffraction analyses, FTIR-ATR spectroscopy single mixed permeation. Codes best those poly...

In this study, poly carbonate (PC) and poly (ethylene terephthalate) (PET) were reactive melt-blended under two different conditions to produce PC/PET copolymers. For each condition, samples were taken at specified mixing times representative a specific structure of copolymers and each one employed to physically compatibilize a PC/PET blend with a fixed composition. Reactive blending and copoly...

BACKGROUND Peripheral nerve repair is often complicated by fibroblastic scar formation, nerve dysfunction, and traumatic neuroma formation. Use of silicone may improve outcomes of these repairs. In this study, we tried to evaluate effectiveness of silicone gel on rats’ sciatic nerve repair, axon regeneration and scar formation around and in the nervous tissues. METHODS This experimental stud...

Abstract The copolymerization of glycidyl cinnamate (GC) as a hitherto non‐polymerizable, photoreactive epoxide structure to aliphatic polyether copolymers is described, using the monomer‐activated ring‐opening polymerization (MAROP). Ethoxyethyl ether (EEGE) and GC are copolymerized employing triisobutylaluminum ( i ‐Bu 3 Al) catalyst tetraoctylammonium bromide (NOctBr 4 ) an initiator. amount...

Drug delivery research employing micelles and nanoparticles has expanded in recent years. Of particular interest is the use of these nanovehicles that deliver high concentrations of cytotoxic drugs to diseased tissues selectively, thus reducing the agent's side effects on the rest of the body. Ultrasound, traditionally used in diagnostic medicine, is finding a place in drug delivery in connecti...

Enzymatischer Abbau und Recycling können die Umweltbelastung durch Plastik reduzieren. Trotz jahrzehntelanger Forschung wurde bisher nicht über Enzyme für effiziente Hydrolyse von Polyurethanen berichtet. Während Esterbindungen in Polyester-Polyurethanen Cutinasen bekannt ist, blieben Urethanbindungen Polyether-Polyurethanen biokatalytische bislang unzugänglich. Wir berichten hier Entdeckung Ur...