نتایج جستجو برای: interpenetrating polymer network

تعداد نتایج: 761898  

2016
Handan Acar Saikat Banerjee Heliang Shi Reihaneh Jamshidi Nastaran Hashemi Michael W. Cho Reza Montazami

Polymer-based interpenetrating networks (IPNs) with controllable and programmable degradation and release kinetics enable unique opportunities for physisorption and controlled release of therapeutic proteins or vaccines while their chemical and structural integrities are conserved. This paper presents materials, a simple preparation method, and release kinetics of a series of long-term programm...

2003
Randy P. Washington Oliver Steinbock

Frontal polymerization involves the conversion of monomer to polymer in a localized reaction zone that propagates due to the interplay of thermal conduction and temperature-dependent reaction rates. The localization of reactions and the fast increase in temperature are the key features that allow for the rapid synthesis of a wealth of polymer systems with spatially controlled microstructures an...

Journal: :Angewandte Chemie 2021

Although most monomers can polymerize through different propagation pathways, polymerization-initiating systems that switch from one mode to another are rare. In this study, we demonstrate enamine-based organic electron donors (OEDs) constitute the first able initiate either free-radical or anionic polymerization under simple, mild, and safe conditions. While direct electron-transfer reduction ...

Journal: :Food Hydrocolloids 2021

A mixed-gel of high acyl (HA) gellan gum and maltodextrin (MD) (potato DE2) demonstrated a range physical properties with proposed interpenetrating network. Mixed hydrocolloid gels allow for the development novel that neither polymer alone could create allowing unique functionality in textures or controlled release. The aim this work was to identify type network formation by examining material ...

2012
Hossein Hosseinzadeh

The present study is aimed at developing novel type of interpenetrating polymeric network (IPN) hydrogels of chitosan with poly(acrylic acid) for the controlled release of amphetamine drug. IPN hydrogels were synthesized by simultaneous polymerization/crosslinking of acrylic acid monomer in the presence of chitosan and crosslinker. The swelling properties and in vitro drug release characteristi...

2014
Ju-Myung Kim Jang-Hoon Park Chang Kee Lee Sang-Young Lee

As a promising power source to boost up advent of next-generation ubiquitous era, high-energy density lithium-ion batteries with reliable electrochemical properties are urgently requested. Development of the advanced lithium ion-batteries, however, is staggering with thorny problems of performance deterioration and safety failures. This formidable challenge is highly concerned with electrochemi...

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