For Polymer Branching Information... Think Low Angle Laser Light Scattering
Chromatix® Low Angle Laser Light Scattering (LALLS) detectors and software give unique polymer branching data when coupled with Gel Permeation Chromatography (GPC). RESULTS: NBS Polymer Standard SRM-1476 is known to contain branched material. The LALLS detector clearly indicates a high molecular weight fraction that is below the detection limit of the Differential Refrac tive Index (DRI) detector. CONCLUSIONS: The CMX-100 LALLS detector is inher ently sensitive to high M w polymers and can yield unique results complementary t o conventional GPC concentra tion detectors such as a differential refractive index unit (DRI). Only with LALLS can the polymer analyst realize thf> f u l l n n f p n t i a l nf f5Pf* f f i r hrarw*h»ri matArinlc
POLYETHYLENE SRM 1476 (NBS) Sample: Low density polyethylene Temperature: 135°C Columns: Shodex 802, 3, 4, b Solvent: TCB Flow Rate: 0.5ml_/min. Instrument: RI Detector
Sample: Low density polyethylene Temperature: 135°C Columns: Shodex 802, 3 , 4 , 5 Solvent: TCB Flow Rata: 0.5mL/min. Instrument: CMX-100
LALLS SOLVES PROBLEMS: It can easily detect the presence of that small concentration of high P w polymer that would otherwise escape detection by using only a concentration detector. These unseen small concentra tions of very high P w branched polymers can dramatically alter the performance and processing characteristics of the material in many different applications. The production or end-use suitability, of your polymer may be assured when LALLS data is used for routine quality control. FAST AND EASY TO USE: The CMX-100 system is designed with unique features that save time and money: • No GPC calibrations needed • Absolute M w for branched and linear polymers • No lengthy and difficult post run calculations required LDC/Milton Roy proprietary software dramatically extends the data generated by the CMX-100. It provides complete data formatting and many special calculation routines. All are available through easy-to-use-and-understand "menu"-driven prompting, specifically designed for the polymer chemist. AFFORDABLE: The CMX-100 is designed t o provide routine LALLS information to the polymer analyst at a surprisingly affordable price. The CMX-100 interfaces easily and quickly t o your present GPC system and can operate at temperatures up t o 150°C, It can be used with equal ease for aqueous and nonaqueous polymers. COMPLETE SERVICE AND SUPPORT: Field service is now available through the extensive LDC/Milton Roy network. We maintain a complete applications laboratory t o support your needs in GPC/LALLS. Call or write for additional information and the name of the nearest LDC/Milton Roy Sales/Service Representative.
LDC/Milton Roy
Chromatix® Product Manager Toll Free 800-538-1595 or (408) 736-0300 (U.S.A. only)
O.S. H E A D Q U A R T E R S , P.O. Box 10238, Riviere Beech, F L 3 3 4 0 4 Toll-free: 800-327-6182, in Florida: (30B) 844-5241 International Telex: 4 4 1 0 9 8 , Domestic Telex: 513479 S U N N Y V A L E O P E R A T I O N . 5 8 0 Oakmead Parkway, Sunnyvale. CA 9 4 0 8 6 Toll-free: 800-538-1595, In California: (408) 736-0300 U N I T E D K I N G D O M , LDC U K , Milton Roy House, 52 High Street, Stone, Staffordshire ST15 8 A R England Phone: 786-81-3842 Telex: 36623 WEST G E R M A N Y , Milton Roy (Deutschland) GMBH Jahmtrasse 22-24 6467 Hasselroth 2, West Germany Phone: 6055-2031 (3366) Telex: 4 1 8 4 3 6 7 JAPAN, Milton Roy Κ.Κ .Takanawa Dai-ichi Building 2 1 - 4 1 , Takanawa 2-Chome, Minato-Ku. Tokyo 108, Japan Phone: (03) 473-3181 Telex: 242-4296
CIRCLE 130 ON READER SERVICE CARD ANALYTICAL CHEMISTRY, VOL. 55, NO. 6, MAY 1983 · 675 A
