The drug reservoir consists of particles homogeneously dispersed in a hydrophilic or lipophilic polymer matrix. This matrix is then placed on to of a medicated disk. This is then stuck onto an occlusive baseplate. An adhesive polymer then surrounds this system to create a strip of adhesive rim.
The glass fibers themselves aren't. The polymer matrix they're embedded in may or may not be.
William Donald Morison has written: 'The effects of moisture loss and elevated temperature upon the material damping of fibre reinforced polymer matrix composites' -- subject(s): Polymer matrix composites, Temperature effect, Damping, Fiber composites, Moisture content
Carbon fiber reinforced polymer (CFRP) is a composite material composed of carbon fibers embedded in a polymer matrix, commonly epoxy resin. The atomic structure of carbon fibers is composed of carbon atoms arranged in a crystalline structure known as graphite, providing high strength and stiffness. The polymer matrix serves to bind the carbon fibers together, enhancing the overall mechanical properties of the material.
Carbon fiber reinforced plastic and carbon fiber reinforced polymer refer to the same material, which is a composite made of carbon fiber and a polymer matrix. The terms are often used interchangeably, with the most common polymer matrix being epoxy resin. Both materials offer high strength-to-weight ratios and are used in a variety of applications such as aerospace, automotive, and sports equipment.
There are three main types of resin, known as Advanced Composite Materials (ACM), used in aircraft production. The three resins used in aircraft are Polymer Matrix Composites (PMCs), Ceramic Matrix Composites (CMCs), and Metal Matrix Composites (MMCs).
Frances I. Hurwitz has written: 'Approaches to polymer-derived CMC matrices' -- subject(s): Ceramic-matrix composites
Jonathan A. Lee has written: 'Metal and polymer matrix composites' -- subject(s): Metallic composites, Polymeric composites
Nanopolymers are a class of materials called polymers, which have a nanoscale. Such polymers have nanoparticles in the polymer matrix but with one dimension ranging from 1 to 50nm at the very least.
At the design stage adding molecules/monomers with more rings than chains will make the polymer more rigid. If this option is not available, adding fiber or particles or fillers is the usual technique. You can make a stiff polymer more flexible by adding plasticizers, but going the other way is more difficult. Technically speaking the polymer itself isn't changing, but the material overall will be more rigid than the polymer matrix due to the fiber support.
The matrix phase is a continuous phase that transfers stress to other phases. It protects phases from the environment. There are three classes of matrix phases which are commonly known as metal matrix composite (MMC), ceramic matrix composite (CMC) and polymer matrix composite (PMC). The dispersed phase is utilised to enhance matrix properties. The classes are particle reinforced composites, fibre reinforced composites and structural composites. Also, dispersed phase geometry is dependent upon concentration, size, shape, distribution and orientation.
John David Robinson has written: 'A study of some thermo-physical properties of composites based on polymer matrix materials'