Partition of Tert-Dodecyl Mercaptan In Systems Containing Styrene, Polystyrene, and Polybutadiene. Its Effects On The Macromolecular Characteristics of High-Impact Polystyrene

N. CASIS,; C.V. LUCIANI; M MARTINELLI; M. STRUMIA; D.A. ESTENOZ; G.R.MEIRA

E-POLYMERS

Año: 2007 p. 1 - 1

1618-7229

p class="MsoBodyText" style="MARGIN: 0cm 42.55pt 6pt; TEXT-ALIGN: justify">This work investigates the distribution between phases of tert-dodecyl mercaptan (t-ddm) in systems containing styrene (St), polystyrene (PS), and polybutadiene (PB) with the aim of studying its effect on the molecular macrostructure of High-Impact Polystyrene (HIPS) produced via the bulk process. Experimental work involved the study of several St/PS/PB/t-ddm blends, and of 2 polymerizations of St in presence of PB (with and without t-ddm). Blends were prepared with increasing PS/St ratios to emulate monomer conversions of 7, 9, 11, 13, and 15%, employing 2 base PSs of different molar masses, and several total concentrations of t-ddm. Measurements by Proton Nuclear M