Effect of Polyetheretherketone (PEEK) Oligomers on the Mechanical Properties of PEEK/Thermotropic Liquid Crystal Copolyestr Blends.

An expriment investigated the effect of PEEK ologomers on the mechanicla properties of PEEK/thermotropic liquid crystal copolyester blends. Results showed that the addition of PEEK oligomers improved the tensile strength, flexural strength, and flexural modulus of the blends. ESCA spectra of 64:16:20 PEED/PEED oligomer/thermotropic liquid..

Inhibitors that Retard the Formation of Allophanate Linkages During the Synthesis of Polyurethane in N,N-Dimethylformamide (DMF).

Researchers investigatred various inhibitors that retard the formatino of allophanate linkages during the synthesis of acid, benxoyl chloride, ethyl cyanoacetate, and diethyl malonate. Various polyurethanes were formed by reacting phenyl isocyanate with N-phenylurethane in DMF and by reacting bis(4-isocyanatophenyl) methane with a diol mi..

NMR SPECTROSCOPIC STUDY OF SIDE REACTIONS IN ANIONIC POLYMERIZSATION OF ACRYLONITRILE.

NNR spectroscopy was used to study the mchanics of side reactions during anionic polymerization of acrylonitrile (AN) with di-n-hexylmagnesium as an initiator in mixed xylene at 25 degrees centigrade. The metalation of AN monomer in the initiaion step led to deactivation of the initiator. During propagation, both chain transfer to an alph..

POLY(ETHER-ALKYL)HYDRAZIDES -- SYNTHESIS AND CHARACTERIZTION.

4,4' - Dihydroxybiphenyl and ethylester of an omega-bromo alkyl-carboxylic acid were used to prepare a series of new acryclic dichlorides. The chlorides were condensed using terephthalic dihydrazide. The resulting poly(ether-alkyl)hyudrazides(PEHZ) were characterized by inherent viscoxity, elemental analysis, differential scanning calorim..

PRELIMINARY REPORT ON PLANTS AND PROCESSES FOR INFRARED RADIATION.

The industrial uses, physical properties, and health and safety risks of infrared radiation are discussed. Exposure to infrared radiation occurs in the chemial, construction, metals, food, leather, printing, ruber, plastics, electrical equipmenet, furniture, stone glass, and clay industries. The extent of exposure depends on the wavelengt..

Concentration and Removal of Metal Ions Using a Water Soluble Chelating Polymer and a Microporous Hollow Fiber Membrane.

Researchers studied methods for concentration and removeing metal ions from waste effluent using a water soluble chelating polymer and a microporus hollow fiber membrane. Tests emplyacrylic acid (molecular weight 90,000) that was adjusted to pH 5 with soduim hydroxide, and a microporous hollow fiber membrane composed of polyacrylonitrile ..

Recovery of Textile auxiliary Chemicals and Water by a New Polymeric Membrane.

Indian researchers developed a styrene based polymer membrane for the recovery of auxiliary chemicals and water discharged by domsestic dyeing facilities. An experiment evaluated the performance of our membranes cast under vrying conditions. The membranes separated and revoered both simulated and real effluent from dyeing processes. The e..

Du Pont Sees an Active Fall 1995.

Du Pont's fall 1995 Intimate Apparel Workshop featured activewear fibers, light weight shapewear, and a continuing emphasis on ready to wear styles. The workshop opened with a video presentation that placed innerwear into three categories. Eco/Trend mixed natural fabrics with metallic styles inspired by technology. Body Chemistry highligh..

Starch Magic - Liquid Polyester Starch Supplement.

Starch Magic is a unique liquid starch for polyester apparel and home furnishings. It is suitable for starching polyester shirts, slacks, blue jeans, coveralls, uniforms, curtains, and tablecoths. One to two ounces of Starch Magic added during the washing machine starch cycle starches 10 pounds dry weight of laundry. A 1 gallon container ..

Anodic Arc Evaporation - A New Vacuum Coating Technique for Textiles and Films.

Anodic arc evaportion is a vacuum deposition technology that is used for coating flexible textiles. Compared with thermal evaporation and sputtering, anodic arc evaporatin has such advantages as low cost, the production of coated substrates with superior layer properties, and the capability to use coatings (silver, copper, titanium, tanta..