Methods, systems, and apparatus, including combination therapy systems for the treatment of infections. These systems comprising: an ultrasound device capable of producing ultrasonic acoustic pressure; and a biodegradable piezoelectric film comprising polymer-based piezoelectric material, poly(L-lactic acid) (PLLA) nanofiber mesh configured to, when placed in an electrolytically conductive environment comprising water and stimulated with the ultrasonic acoustic pressure, vibrate generating electricity to locally decomposes the water into reactive oxygen species (ROS) to induce a broad-spectrum bactericidal effect.

A polyarylene ether sulfone comprising endgroups of formula (I), a process for its manufacture, a molding composition comprising the polyarylene ether sulfone, use of the molding composition and fiber, film or shaped article produced using the molding composition. ##STR00001##

A polymetalloxane is described having a constituent unit represented by the following general formula (1):

##STR00001##

wherein R.sup.1, R.sup.2, R.sup.3, M a, b and m are as defined.

The invention presented in this document relates to processes for the preparation of a formulation containing poly(lactic acid) (PLA) and aliphatic and/or aromatic polyesters which plasticize it, and its use in monofilaments and films. The presence of polyesters does not remove the biodegradability and composting characteristics of the raw materials used in the formulation. The invention also concerns products that use the formulation.

An object of the present invention is to provide a stretchable polyester having shape followability and flexibility by elastic response and being able to suppress deterioration over time due to secondary crystallization. The present invention provides a stretchable polyester which is an aliphatic copolymer polyester containing two or more types of monomer units, wherein the stretchable polyester contains an α-form and an amorphous structure, and a degree of orientation determined by X-ray of the α-form is 50% or greater.

Disclosed in the present invention is a semiaromatic polyester, a preparation method and application thereof. Having a specific segment length and carboxyl group content, the semiaromatic polyester provides a balance of degradation rate and mechanical properties, compared with known semiaromatic polyesters. The 30-day weight retention of the semiaromatic polyester obtained in the present invention may be contained to from 45 to 70%.

Methods of preparing a lignocellulosic biomass-based thermoplastic composition are described. In some embodiments, the method comprises: (a) preparing a mixture of solids comprising lignocellulosic biomass, a meltable solvent and a polyester; and (b) melt-compounding said mixture of solids; thereby preparing a lignocellulosic biomass-based thermoplastic composition. Fibers produced by the methods are also described, as are yarns and fabrics comprising the fibers.

The invention discloses a polymer with a low dielectric constant and a molecular structure design method capable of reducing the dielectric constant of the polymer. A straight-chain rigid group is introduced into a meta-position of a side group benzene ring or diphenyl chain segment structure by using the designability of a molecular chain side group of a polymer; and a free volume hole with a larger size is formed in the material through loose rotation of the side group benzene ring to inhibit molecular chain deposition, thereby reducing the dielectric constant of the polymer material. The design method is simple, is suitable for a common high-performance polymer material, can be applied to preparation of a low-dielectric polymer material, is suitable for the field of new and high technology industries such as electronics, microelectronics, information and aerospace and is especially suitable for the field of super-large-scale integrated circuits.

A polypropylene composition for a dyeable polypropylene filament yarn includes a polypropylene having a melt flow rate ranging from 30 g/10 min to 40 g/10 min, a polyester serving to modify the polypropylene and having a melt flow rate ranging from 40 g/10 min to 50 g/10 min, and a compatibilizer serving to improve compatibility between the polypropylene and the polyester. The polypropylene composition has a melt flow rate ranging from 30 g/10 min to 40 g/10 min.

A method of making a bijel includes dispersing surface-active nanoparticles in a ternary liquid mixture. The ternary liquid mixture includes a hydrophilic liquid, a hydrophobic liquid, and a solvent. The ternary liquid mixture is contacted with water. A bijel includes a stable mixture of two immiscible liquids separated by an interfacial layer of colloidal particles. The bijel has temperature-independent stability, and the domain sizes are below one micrometer.