Cored polymeric nanoparticles were prepared using an adenosine template and allylated hyperbranched polyglycerols (HPGs). The HPGs contained a single alkyne that was capable of 1,3-dipolar cycloaddition with a decaazido adenosine template to facilitate the rapid synthesis of HPGs containing a large number of allyl end-groups. Ring closing metathesis (RCM) mediated cross-linking at high dilution...

Hyperbranched polymer is a kind of with three-dimensional structure, which contains highly branched structure and large number modified terminal functional groups. The desired properties can be obtained by modifying the active end groups appropriately. polymers have been successfully used in development oilfield chemicals due to their excellent solubility, rheology, temperature resistance, salt...

Abstract. In this research, four novel types of hyperbranched polyester polymers (HBPs) were used and blended with polypropylene polymer PP, virgin VPP recycled rPP, using a twin-screw extrusion machine. Hyperbranched was added in different weight ratios (5%, 10%, 20%). The Fourier transform spectroscopy FTIR, the water contact angle CA, biodegradation soil, rheological properties (melt flow ra...

This work is investigating the chemical grafting on Ti surface of a polymer/calcium phosphate coating of improved adhesion for enhanced bioactivity. For this purpose, a whole new methodology was developed based on covalently attaching a hyperbranched poly(ethylene imine) layer on Ti surface able to promote calcium phosphate formation in a next deposition stage. This was achieved through an inte...

Water borne polyurethane (PU) based on newly prepared hyperbranched poly (amine-ester) (HBPAE) was applied and evaluated as organic coating material. HBPAE was prepared through one-pot synthesis between trimethylol propane as a core and AB2 branched monomer which was obtained via Michal addition of methyl methacrylate (MMA) and diethanol amine (DEA). PU was prepared from HBPAE using different r...

A hydrophilic star block co-polymer was synthesized, characterized, and evaluated as a protein nanocarrier. The star block co-polymer was composed of a hyperbranched polyethylenimine (PEI) core, a poly(L-lysine) (PLL) inner shell, and a poly(ethylene glycol) (PEG) outer shell. The model protein insulin can be rapidly and efficiently encapsulated by the synthesized polymer in aqueous phosphate b...

Work carried in the authors’ laboratory on Si– CH2–Si bridged polycarbosilanes is reviewed. In pursuit of high-yield polymeric precursors to silicon carbide, convenient synthetic routes to both linear and hyperbranched polycarbosilanes having a ‘[SiH2CH2]n’ compositional formula have been developed. The linear [SiH2CH2]n polymer was prepared by ring-opening polymerization of a substituted disil...

This study plans to develop a nanoparticle technology that can assemble different polymeric "building blocks" with various desired functionalities into one nanosystem in a pH-dependent manner. For this purpose, polymeric building blocks were specifically designed with hyperbranched architectures, and orthogonal pH-reversible phenylboronic acid-diols were taken as "joints" to integrate them toge...