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MICRO: Brave New Materials
as a function of development time on exposed DUV resist. The acid generated during exposure unblocked the acid-protective groups on the polymer backbone. As a result, the polymer became soluble in base and much more hydrophilic in nature. The contact angles of all three developer formulations were
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Artificial lens hazing root-cause analysis
. formulation of lenses during manufacture. Description. Frequently, traditional IOL's were not designed to be. hydrated in use and were composed of impermeable. materials such as PMMA and silicone rubbers. However, later versions are increasingly attempting to. develop hydrophilic materials that are more
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Tableting Process Uses Dry Gelatin, Eliminates Preprocessing Steps
. "Tableting processes are too complex and some of them, such as wet granulation, are so dirty that they require a significant amount of cleanup time," he says. Dry gelatin is the key to the process, Nguyen says, since its binding, cohesive and hydrophilic properties allow it to function as diluent, binder
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Here come metal-oxide nanotubes
discovered in the 1990s. "For example, the materials we're working with are much more hydrophilic than carbon and can load nearly 50% percent of their weight with water," says Sankar Nair, assistant professor in Georgia Tech's School of Chemical and Biomolecular Engineering. "There is a whole range
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Adhesion, Adhesion Failure, and BONDiT
resin from hydrophilic glass. þÿ Adhesion, Adhesion. Failure,. and. BONDiTTM. Bonding System for. Metal and Other Minerals to. Polymers. RELTEK LLC. ADHESION AND ADHESION FAILURE. RELTEK LLC. 2345 Circadian Way. Santa Rosa, CA 95407. 707-284-8808 Ph 707-284-8812 Fax. reltek@reltekllc.com
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Assure Batch Uniformity for Freeze-Dried Products
degradation of the API alter the desired secondary, tertiary or quaternary structure of a peptide or protein product allow polymerization, aggregation or denaturation of active ingredients that have both hydrophilic and hydrophobic character. For biopharmaceuticals, conformational changes should
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Controlled Release Moves Beyond Patent Extension
with hydrophilic surfaces and hydrophobic interiors that can carry insoluble pharmaceuticals. PR Pharmaceuticals (Fort Collins, Colo.) combines PEGylation with more traditional CR microencapsulation to achieve sustained release plus controlled bioavailability. The company s InsuLAR injected CR insulin product
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MICRO:Archive:June 1997:Semicon Technical Programs
Extractables in Fluid Handling Components Donald C. Grant, CT Associates Accelerated Qualification of Chemical Distribution Systems for New Fab Startup Reduction of BOE Bath Startup Times through Utilization of Hydrophilic Membrane Filter Media Purge and Commissioning Procedures for Bulk Liquid Delivery