TY - JOUR
T1 - Synthesis and characterization of poly(2-ethylhexyl methacrylate) copolymers containing pendant, self-complementary multiple-hydrogen-bonding sites
AU - Elkins, Casey L.
AU - Park, Taigyoo
AU - Mckee, Matthew G.
AU - Long, Timothy Edward
PY - 2005/10/1
Y1 - 2005/10/1
N2 - The synthesis and characterization of copolymers containing 2-ethylhexyl methacrylate and a quadruple-hydrogen-bonding site, 2-ureido-4[1H]-pyrimidone methacrylate (UPyMA), are described. An analogous dimeric hydrogen-bond- containing copolymer based on 2-ethylhexyl methacrylate and methacrylic acid (PEHMA-co-MAA) was also synthesized for comparative purposes. The glass-transition temperatures of the poly(2-ethylhexyl methacrylate-co-2-ureido- 4[1H]-pyrimidone methacrylate) (PEHMA-co-UPyMA) series increased linearly with increasing UPyMA content. Creep compliance measurements as a function of temperature indicated a decrease in the creep compliance with increasing UPyMA content over the range of 1-10 mol % UPyMA. Melt rheological analysis also showed an increase and lengthening of the plateau modulus as a function of frequency with increasing UPyMA content, as well as increasing complex viscosity as a function of temperature. The analogous PEHMA-co-MAA copolymer, which contained 11 mol % methacrylic acid, showed, in the melt rheological analysis, behavior similar to that of the PEHMA-co-UPyMA copolymer containing only 1 mol % UPyMA units. The multiple-hydrogen-bond-containing copolymers were successfully analyzed with time-temperature superposition for the construction of master curves.
AB - The synthesis and characterization of copolymers containing 2-ethylhexyl methacrylate and a quadruple-hydrogen-bonding site, 2-ureido-4[1H]-pyrimidone methacrylate (UPyMA), are described. An analogous dimeric hydrogen-bond- containing copolymer based on 2-ethylhexyl methacrylate and methacrylic acid (PEHMA-co-MAA) was also synthesized for comparative purposes. The glass-transition temperatures of the poly(2-ethylhexyl methacrylate-co-2-ureido- 4[1H]-pyrimidone methacrylate) (PEHMA-co-UPyMA) series increased linearly with increasing UPyMA content. Creep compliance measurements as a function of temperature indicated a decrease in the creep compliance with increasing UPyMA content over the range of 1-10 mol % UPyMA. Melt rheological analysis also showed an increase and lengthening of the plateau modulus as a function of frequency with increasing UPyMA content, as well as increasing complex viscosity as a function of temperature. The analogous PEHMA-co-MAA copolymer, which contained 11 mol % methacrylic acid, showed, in the melt rheological analysis, behavior similar to that of the PEHMA-co-UPyMA copolymer containing only 1 mol % UPyMA units. The multiple-hydrogen-bond-containing copolymers were successfully analyzed with time-temperature superposition for the construction of master curves.
KW - Mechanical properties
KW - Melt rheology
KW - Molecular recognition
KW - Multiple hydrogen bonding
KW - Radical polymerization
KW - Random copolymerization
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U2 - 10.1002/pola.20961
DO - 10.1002/pola.20961
M3 - Article
AN - SCOPUS:27744495094
VL - 43
SP - 4618
EP - 4631
JO - Journal of Polymer Science, Part A: Polymer Chemistry
JF - Journal of Polymer Science, Part A: Polymer Chemistry
SN - 0887-624X
IS - 19
ER -