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Analysis of the influence of glycidyl methacrylate on molecular weight and refractive index in styrene‐methylmethacrylate‐glycidyl methacrylate copolymers through mixture design of experiments
Author(s) -
Cerna Jorge R.,
Alejandro Ana S.,
Matla Maria
Publication year - 2009
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.30602
Subject(s) - glycidyl methacrylate , copolymer , materials science , polymerization , polymer chemistry , styrene , methacrylate , radical polymerization , molar mass distribution , chemical engineering , composite material , polymer , engineering
To analyze the influence of the percentage of glycidyl methacrylate (GMA) coupled with polymeric chains to determine their effect on molecular weight ( M w ) and refractive index ( n D ), a Mixture Design of Experiments (MDOE) has been used. A “ d ” optimal mixture design for four components was used for planning the runs and analyzing the information using statistical tools. The prototypes generated were synthesized using styrene (St) 73–89.98%, methylmethacrylate (MMA) 8–22%, and glydicyl methacrylate (GMA) 2–10% at different ratios according to the experiment design. In this sense, the prototypes are terpolymers (St‐MMA‐GMA). According to the desired properties of the prototypes reviewed in literature and market studies, this is expressed in materials with a preferred n D (ca. 1.5750–1.5894) and molecular weight (ca. 300,000 g/mol) the ratios were established. In a radical polymerization process using a commercial initiator (Trigonox 22E‐50) and a temperature program (120–200°C) simulating an industrial process, the polymerization reactions were conducted. The detailed information derived from DOE here is presented. © 2009 Wiley Periodicals, Inc. J Appl Polym Sci, 2009