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Use of the Trifunctional Cyclic Initiator, DEKTP, as the Radical Initiator in the Modification of Poly(propylene) in the Presence of Different Branching/Crosslinking Co‐Agents
Author(s) -
García L.,
Morales G.,
Avalos B F.,
Acuña P.
Publication year - 2013
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.201200028
Subject(s) - trimethylolpropane , branching (polymer chemistry) , polymer chemistry , tmpta , pentaerythritol , materials science , peroxide , fourier transform infrared spectroscopy , benzoyl peroxide , chemistry , polymerization , monomer , polymer , chemical engineering , organic chemistry , photoinitiator , polyurethane , fire retardant , engineering
Homopolypropylene was modified in the molten state using a new cyclic multifunctional peroxide as the initiator, the Diethyl Ketone Triperoxide (DEKTP), in the presence of different branching/crosslinking co‐agents: Trimethylolpropane Triacrylate (TM), Trimethylolpropane Triacrylate Propoxylate (TMPP), Pentaerythritol Tetraacrylate (PETA) and N′N′‐1,3‐Phenylene Dimaleimida (FDM). Experiments were carried out in an internal mixer at 180 °C, using two different concentrations of co‐agent/initiator; [0.250/0.025] and [0.50/0.05], molar rate = [co‐agent]/[initiator] constant equal to 10. The modified PP′s were evaluated by GPC, FTIR, DSC, WAXD, and MOP. Torque and MFI were also evaluated. The results showed the presence of branches in the backbone of PP when it was modified with TM and PETA.