A dual encapsulation strategy to generate anion-responsive luminescent lanthanide hydrogels.

We report a new method to generate ion-responsive luminescent hydrogels, involving encapsulation of a luminescent lanthanide probe within crosslinked amphiphilic polymer particles and subsequent entrapment within a hydrogel. The resulting hydrogels are capable of reversible bicarbonate sensing, exhibit no leaching, and can be tuned for a range of sensing applications.

Evaluating the impact of a child sponsorship programme on paediatric health and development in Calauan, Philippines: A retrospective audit.

Aim: International child sponsorship programmes comprise a considerable proportion of global aid accessible to the general population. Team Philippines (TP), a health care and welfare initiative run in association with the University of Notre Dame Sydney since 2013, leads a holistic sponsorship programme for 30 children from Calauan, Philippines. To date, empirical research has not been performed into the overall success and impact of the TP child sponsorship programme.

Effect of Particle Interactions on the Assembly of Drying Colloidal Mixtures.

The effects of particle interactions on the size segregation and assembly of colloidal mixtures during drying were investigated. A cationic surfactant was added to a binary latex/silica colloidal dispersion that has been shown to self-stratify upon drying at room temperature. Atomic force microscopy was used to show that the change in particle interactions due to the presence of surfactants reduced the degree of stratification and, in some cases, suppressed the effect altogether.

In Situ Growth of Silver Nanoparticles on Chitosan Matrix for the Synthesis of Hybrid Electrospun Fibers: Analysis of Microstructural and Mechanical Properties.

A viable alternative for the next generation of wound dressings is the preparation of electrospun fibers from biodegradable polymers in combination with inorganic nanoparticles. A poly(vinyl alcohol)-chitosan-silver nanoparticles (PVA-CTS-Ag NPs) system has been developed for antimicrobial and wound healing applications. Here, the preparation of PVA-CTS-Ag electrospun fibers using a two-step process is reported in order to analyze changes in the microstructural, mechanical, and antibacterial properties and confirm their potential application in the biomedical field.

Electrospinning of stimuli-responsive polymers for controlled drug delivery: pH- and temperature-driven release.

Stimuli-responsive polymers have attracted academic interest over the last 60 years due to their potential use in developing systems with a range of functionalities that can be activated by external artificial triggers. The diversity of responses and stimuli, which can be achieved through careful polymer selection and processing, opens up applications in nearly every sector. In particular, the use of responsive polymers for the controlled delivery of drugs and bioactive compounds has been heavily researched.