pH-responsive hydrogels are recognized as versatile sensors and actuators due to their unique time-dependent properties. Specifically, pH-sensitive hydrogel-based bilayers exhibit remarkable bending capabilities when exposed pH-triggered swelling. This study introduces a semi-analytical technique that combines non-linear solid mechanics with ionic species transport investigate the behavior of s...

In this work a pH-sensitive poly(acrylamide-co-itaconic acid)/ graphite composite hydrogel is prepared by free radical initiated polymerization of monomers acrylamide(Am) and itaconic acid(IA) in the presence of settled graphite(Gt) particles using N,N’-methylene bisacrylamide(MB) as cross linker in aqueous medium. The SEM analysis revealed almost uniform distribution of grafite particles withi...

Modified poly(aspartic acid)/poly(vinyl alcohol) interpenetrating polymer network (KPAsp/PVA IPN) hydrogel for drug controlled release was synthesized by a simple one-step method in aqueous system using poly(aspartic acid) grafting 3-aminopropyltriethoxysilane (KH-550) and poly(vinyl alcohol) (PVA) as materials. The hydrogel surface morphology and composition were characterized by Fourier trans...

Understanding contrast mechanisms and identifying discriminating features is at the heart of diagnostic imaging development. This paper focuses on how pH influences the viscoelastic properties of biopolymers to better understand the effects of extracellular pH on breast tumour elasticity imaging. Extracellular pH is known to decrease as much as 1 pH unit in breast tumours, thus creating a dange...

The morphology of interpenetrating polymeric networks (IPNs) composed of the temperature-sensitive poly(N-isopropyl acrylamide) (PNIPAAm) and the pH-sensitive poly(methacrylic acid) (PMAA) were investigated by scanning electron microscopy (SEM). The IPN hydrogels were prepared by a sequential UV polymerization method. SEM studies were conducted on IPN hydrogel samples dried by different methods...

The oral route is the preferred route for drug delivery, among oral delivery Intestine and colon drug delivery have been used for molecules aimed at local treatment of colonic diseases such as Colon Cancer, Polyp, Colorectal, Crohn’s Disease, Inflammatory Bowel Disease (IBD), Ulcerative Colitis (UC) etc. and for delivery of molecules susceptible to enzymatic degradation such as peptides. There ...

We report an all-dry fabrication method of the hybrid structure of pH-responsive hydrogel and carbon nanotube arrays using initiated chemical vapor deposition (iCVD). Vertically aligned carbon nanotube (VACNT) arrays with low site density were coated by a vapor-deposited poly(methacrylic acid-coethylene glycol diacrylate) hydrogel with complete retention of the aligned structure and precise con...

Hydrogels are the 3 dimensional cross linked polymeric networks which absorb the water 10-20 times of its molecular weight. Hydrogels are sensitive to different environmental stimuli like pH, temperature, ion, electric signals, light, pressure, antigen specific, enzyme sensitive, and glucose levels. When the environment is get change they get swell, and swelling is the most important characteri...