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Fe 2+ –Thioureadioxide–H 2 O 2 ‐induced polymerization of glycidyl methacrylate and its mixtures with acrylamide, acrylonitrile, butylmethacrylate, or styrene with cotton fabric
Author(s) -
AbouZeid N. Y.,
Waly A.,
ElAlfy E. A.,
Hebeish A.
Publication year - 1982
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.1982.070270622
Subject(s) - glycidyl methacrylate , acrylonitrile , acrylamide , monomer , polymerization , polymer chemistry , styrene , materials science , acrylonitrile butadiene styrene , chemistry , chemical engineering , copolymer , polymer , composite material , engineering
Fe 2+ –thioureadioxide‐H 2 O 2 ‐induced polymerization of glycidyl methacrylate (GMA) and its mixtures with acrylamide (Aam), acrylonitrile (AN), butylmethacrylate (BMA), or styrene was investigated at different temperatures (50–95°C), for different periods of time (5–130 min) using different concentrations of Fe 2+ ‐thioureadioxide and H 2 O 2 . The add‐on increased by increasing the thioureadioxide concentration up to 0.05% then decreased. H 2 O 2 concentration of 0.005% constituted the optimal for GMA and GMA/Aam mixtures, and 0.02% H 2 O 2 for GMA/AN, GMA/BMA and GMA/styrene mixtures. Increasing the concentration of GMA either alone or in admixtures resulted in improved add‐ons; the magnitude of this improvement relied on the nature of the monomer used along with GMA. The polymerization reaction was characterized by an initial fast rate followed by a slower one irrespective of monomer or monomer mixtures used. Presence of Aam along with GMA offset the fast termination observed with the latter at higher temperatures (above 60°C). GMA/Aam mixtures produced higher add‐ons than Aam alone irrespective of their rations in the mixtures, indicating activation of Aam with GMA. On the other hand, Aam deactivated GMA. Similar situation was encountered when styrene or acrylonitrile was used instead of Aam except that the percent add‐ons obtained with GMA/AN mixtures decreased upon raising the polymerization temperature above 80°C. Contribution of GMA in the add‐ons obtained with the different mixtures was also examined. For instance, the add‐on was composed mainly of poly(GMA) when GMA/Aam at a ratio of 8:2 was used. On the other hand, using GMA/Aam at a ratio of 2:8 brought about add‐ons of poly(GMA/Aam) in which the concentration of GMA and Aam were roughly equal.