Acrylamide and N,N-methylenebis(acry1amide) (AAm-Bis) copolymerization has been investigated in water at a monomer concentration of 1.8 w/v %. Conversion of monomer and pendant vinyl groups was measured as a function of the reaction time up to the onset of macrogelation. Experimental results indicate that 80% of pendant vinyl groups are consumed by cyclization reactions. When the monomer concen...

Abstract Several countries have implemented the use of biodiesel as a diesel fuel blend. Indonesia currently implements highest percentage biodiesel, reaching 30% (B30), starting from 2020. Strict quality standards been worldwide, such ASTM D6751 (USA), EN 14214 (EU), JASO M360 (Japan), and SNI 7182:2015 (Indonesia). Prior to blending with diesel, must comply specification. One most concerning ...

Stimuli responsive hydrogels may be promising materials for shape transforming structures due to their ability to deform significantly in response to an environmental stimulus without the need for external power. It is well-known that by laminating swelling hydrogels and non-swelling flexible materials, such as inert elastomers, bending actuation can be achieved. In this work, we report an impr...

Wearable devices are used to record several physiological signals, providing unobtrusive and continuous monitoring. These systems are of particular interest for applications such as ambient-assisted living (AAL), which deals with the use of technologies, like brain-computer interface (BCI). The main challenge in these applications is to develop new wearable solutions for acquisition of electroe...

PURPOSE Nanogel, a nanoparticle prepared from a cross-linked hydrophilic polymer network, has many biomedical applications. A radiation technique has recently been introduced as one of the appropriate methods for the preparation of polymeric nanogels due to its additive-free initiation and easy control procedure. METHODS We have investigated the formation of nano-sized polymeric gels, based o...

A two-dimensional microfluidic system is presented for intact protein separations combining isoelectric focusing (IEF) and sodium dodecyl sulfate (SDS) polyacrylamide gel electrophoresis (PAGE) employing in situ photopolymerized polyacrylamide (PAAm) gels. The PAAm gels are used for multiple functions. In addition to serving as a highly-resolving separation medium for gel electrophoresis, discr...

Signal drift and performance instability of brain-computer interface devices induced by the failure between rigid metal electrodes soft human skin hinder precise data acquisition electroencephalogram (EEG). Thus, it is desirable to achieve a robust for devices. Here, kind polydopamine methacrylamide-polyacrylamide (PDMA-PAAM) hydrogel developed. To improve adhesion, dopamine introduced into pol...

In this study, calcium alginate/agar (CA/Ag) 3D structures were printed as strip assembles with high resolution and tailorable mechanical properties by a thermal-assisted printing method. Specifically, alginate agar combined to minimize the Barus effect, further improved resolution. The introduction of altered rheological ink, such increasing its viscosity obtain structure higher precision. cha...

The thermoluminescence (TL) glow curves of UV irradiated PAAm-PVA polyblend have been studied. The experimental glow curves show the presence of two peaks with glow peak temperatures at 373K and 479K. The values of activation energy and frequency factors are determined by employing computer simulation. Most of the TL glow curves obey non first order kinetics. The results obtained by using TL ex...

Nanoparticles (NPs) containing the photo-therapeutic dye Chlorin e6 (Ce6) have been explored in multiple studies for photo-dynamic therapy (PDT). However, little work has been carried out regarding their PDT efficacy, relative to other dye containing NPs. Here polyacrylamide nanoparticles (PAAm NPs) containing Ce6 were prepared and their PDT efficacy compared to previously reported methylene bl...