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Copolymers, Polyblends, and Composites
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Advances in Chemistry Series No. 142 .LSSBZTH
Norbert A. J. Platzer, Editor
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The answer t o the need for a high quality chromatography microsyringe at a low price. In analytical laboratories around the w o r l d the name Pressure Lok·® has come t o stand for high dura b i l i t y and superior reproducibility. The key is the unique design of our T e f l o n * plunger t i p , created by a special stressforming process that makes it pressure tight. Thisdesign also eliminates plunger freeze-up in the barrel while maintaining a smooth resilient seal which overcomes T e f l o n * cold-flow. A l l Pressure Lok®models are capable of handling G.C. pressures to 250 psi w i t h out leakage and the C-160 series (shown) also features an integral spacer on the thumbpiece t o limit plunger travel and prevent barrel splitting, needle plugging or dislodgement. The Series C-160 isavailable in several models at an economi cal price. Please call or write f o r further information on how the C-160 can improve your chromatography results. • D u P o n t Trademark
A symposium sponsored by the Division of Industrial and Engineering Chemistry, and cosponsored by the Division of Polymer Chemis try, the Division of Organic Coatings and Plas tics Chemistry, and the Division of Cellulose, Wood, and Fiber Chemistry of the American Chemical Society. This timely collection of thirty-eight papers is comprehensive and unique in its coverage of the latest research results on copolymers, polyblends, and composites which are used to toughen brittle polymers with elastomers, to reinforce rubbers with active fillers, and to strengthen or stiffen plastics with fibers or minerals. Specific topics include: • determination of MWD in homopolymers; liquidliquid phase transition phenomena • grafting kinetics of ABS; rubber-modified polymers; block copolymers; laminating resins; vinylene carbonate • polymerization and copolymerization behavior; covulcanization of elastomer blends 482 pages (June 1975) $34.50 clothbound (ISBN 08412-0214-1). SIS/American Chemical Society 1155 16th St., N.W./Wash., D.C 20036 Please send : copies of No. 142 Copolymers, Polyblends, and Composites at $34.50 per book. D Check enclosed for $ . Π Bill me. Postpaid in U.S. and Canada, plus 40 cents elsewhere. Name
PRECISION
SAMPLING CORPORATION
Post Office Box 1 5 1 1 9 or 1 5 8 8 6 Baton Rouge, Louisiana 70895 Telephone (504) 9 2 7 - 1 1 2 8 CIRCLE 161 O N READER SERVICE CARD
692 A · ANALYTICAL CHEMISTRY, VOL. 50, NO. 7, JUNE 1978
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