To provide a high-strength, non-resin organic plugging agent for water shutoff in carbonate fracture and cave reservoirs, high-strength gel was prepared with polyvinyl alcohol 1788 as gelant p-phthalaldehyde crosslinker this study. By selecting latent acids rather than strong acid such hydrochloric sulfuric catalysts, by adding clay sulphonated phenolic resin stabilisers to the gelation, drawba...

Various aldehyde-containing photoswitches have been developed whose reactivity toward amines can be controlled externally. A thermally stable bifunctional diarylethene, which in its ring-closed form exhibits imine formation accelerated by one order of magnitude, was used as a photoswitchable crosslinker and mixed with a commercially available amino-functionalized polysiloxane to yield a rubbery...

In this article, borax was used as the prime agent, and organic boron that cross-linked agent synthesized using adding sodium tartrate. The synthesis response shapes were optimized unmarried factor way. temperature opposition crosslinking time of fracturing fluid appraisal standards to decide boron. cross-linking agent's optimal statuses measured, chemical forcible holdings after with polyvinyl...

Background & Aims: In recent years, the feasibility of hydrophilic nanoparticles has been broadly investigated for use in drug delivery and therapeutic systems. Due to the problems of traditional adjuvants, in this study Agkistrodon halys (Ah) Snake venom was loaded in chitosan nanoparticles (CS NPs) in order to be used as an advanced adjuvant and antigen delivery system in ant...

Introduction: Nanoparticles have several exciting applications in various fields of biomedicine. It has been found that among different classes of nanoparticles core/shell is most promising for field of nano-medical imaging and therapy due to their distinct advantages. The core/shell type nanoparticles can be generally comprising of two nanoparticles one act as a core (inner ma...

Abstract Chitosan has been widely used as an excipient in the pharmaceutical industries, due to its biodegradable, biocompatible, low toxicity, and mucoadhesive properties. nanoparticles have extensively investigated for delivery of drugs, herbal products, proteins or peptides genes. The particle size chitosan important effect on their properties application. Smaller can entrap higher concentra...

Nanofibers mats of chitosan (CTS)/polyvinyl alcohol (PVA)/halloysite nanoclay and drug loaded CTS/PVA/halloysite nanoclay//3-glycidyoxypropyl trimethoxysilane were fabricated using the electrospinning method. Electrospun nanofiber samples characterized by Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), thermogravimetric analysis (TGA). FTIR confirmed chemical...

Bio-based materials have received more attention to replace from petroleum resources because of sustainability reason. Plant oil is one the most interesting raw produce thermosetting polymer. A crosslinking reaction between epoxidized linseed and vegetable oil-based crosslinkers investigated in present study. Two types crosslinker including fatty acid dimer trimer were reacted with oil. rotatio...