Hyperbranched aromatic and aliphatic poly(urea-urethane)s were prepared by the one-pot method using 2,4-toluylene diisocyanate (TDI), isophorone diisocyanate, and 2(3-isocyanatopropyl)cyclohexyl isocyanate as AA* monomers and diethanol amine and diisopropanol amine as B2B* monomers. The characteristics of the resulting polymers were very sensitive to slight changes in the reaction conditions, such as temperature, concentration, and type of catalyst used, as can be seen from the results of gel permeation chromatography and differential scanning calorimetry. The structures were analyzed in detail using H-1 and C-13 NMR spectroscopy. By using model compounds, the different isomeric structures of the TDI polymers were deduced, their percentages of their linear, terminal, and dendritic subunits were calculated, and their degree of branching (DB) was determined. DB values up to 70% were reached depending on the reaction conditions and stoichiometry of the monomers. The number of terminal groups decreased significantly when dibutylamine was used to stop the reaction instead of B2B*, indicating the presence of a significant number of unreacted isocyanate groups in the hyperbranched product when the polyaddition reaction was stopped. (C) 2004 Wiley Periodicals, Inc.
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CIDETEC Res Ctr, Paseo Miramon 196, Donostia San Sebastian 20014, Gipuzkoa, SpainCIDETEC Res Ctr, Paseo Miramon 196, Donostia San Sebastian 20014, Gipuzkoa, Spain
Aranberri, Ibon
Montes, Sarah
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CIDETEC Res Ctr, Paseo Miramon 196, Donostia San Sebastian 20014, Gipuzkoa, SpainCIDETEC Res Ctr, Paseo Miramon 196, Donostia San Sebastian 20014, Gipuzkoa, Spain
Montes, Sarah
Azcune, Itxaso
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CIDETEC Res Ctr, Paseo Miramon 196, Donostia San Sebastian 20014, Gipuzkoa, SpainCIDETEC Res Ctr, Paseo Miramon 196, Donostia San Sebastian 20014, Gipuzkoa, Spain
Azcune, Itxaso
Rekondo, Alaitz
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CIDETEC Res Ctr, Paseo Miramon 196, Donostia San Sebastian 20014, Gipuzkoa, SpainCIDETEC Res Ctr, Paseo Miramon 196, Donostia San Sebastian 20014, Gipuzkoa, Spain
Rekondo, Alaitz
Grande, Hans-Jurgen
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CIDETEC Res Ctr, Paseo Miramon 196, Donostia San Sebastian 20014, Gipuzkoa, SpainCIDETEC Res Ctr, Paseo Miramon 196, Donostia San Sebastian 20014, Gipuzkoa, Spain
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Univ Basque Country, Univ Basque Country, Fac Engn Gipuzkoa, Dept Chem & Environm Engn,GMT, Pza Europa 1, Donostia San Sebastian 20018, Gipuzkoa, SpainUniv Basque Country, Univ Basque Country, Fac Engn Gipuzkoa, Dept Chem & Environm Engn,GMT, Pza Europa 1, Donostia San Sebastian 20018, Gipuzkoa, Spain
Diez-Garcia, Inigo
Santamaria-Echart, Arantzazu
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Univ Basque Country, Univ Basque Country, Fac Engn Gipuzkoa, Dept Chem & Environm Engn,GMT, Pza Europa 1, Donostia San Sebastian 20018, Gipuzkoa, SpainUniv Basque Country, Univ Basque Country, Fac Engn Gipuzkoa, Dept Chem & Environm Engn,GMT, Pza Europa 1, Donostia San Sebastian 20018, Gipuzkoa, Spain
Santamaria-Echart, Arantzazu
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Eceiza, Arantxa
Tercjak, Agnieszka
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Univ Basque Country, Univ Basque Country, Fac Engn Gipuzkoa, Dept Chem & Environm Engn,GMT, Pza Europa 1, Donostia San Sebastian 20018, Gipuzkoa, SpainUniv Basque Country, Univ Basque Country, Fac Engn Gipuzkoa, Dept Chem & Environm Engn,GMT, Pza Europa 1, Donostia San Sebastian 20018, Gipuzkoa, Spain
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Hubei Univ, Coll Mat Sci & Engn, Wuhan 430062, Peoples R ChinaHubei Univ, Minist Educ, Key Lab Green Preparat & Applicat Funct Mat, Wuhan 430062, Peoples R China
Liu, Dan
Zeng, Shaomin
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Hubei Univ, Coll Mat Sci & Engn, Wuhan 430062, Peoples R ChinaHubei Univ, Minist Educ, Key Lab Green Preparat & Applicat Funct Mat, Wuhan 430062, Peoples R China
Zeng, Shaomin
Yao, Chang
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Hubei Univ, Coll Mat Sci & Engn, Wuhan 430062, Peoples R ChinaHubei Univ, Minist Educ, Key Lab Green Preparat & Applicat Funct Mat, Wuhan 430062, Peoples R China
Yao, Chang
Chen, Aifang
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Hubei Univ, Coll Mat Sci & Engn, Wuhan 430062, Peoples R ChinaHubei Univ, Minist Educ, Key Lab Green Preparat & Applicat Funct Mat, Wuhan 430062, Peoples R China
Chen, Aifang
Chen, Zhonghua
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S China Univ Technol, Coll Mat Sci & Engn, Guangzhou 510641, Peoples R ChinaHubei Univ, Minist Educ, Key Lab Green Preparat & Applicat Funct Mat, Wuhan 430062, Peoples R China
Chen, Zhonghua
Xu, Zushun
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Hubei Univ, Minist Educ, Key Lab Green Preparat & Applicat Funct Mat, Wuhan 430062, Peoples R China
Hubei Univ, Coll Mat Sci & Engn, Wuhan 430062, Peoples R ChinaHubei Univ, Minist Educ, Key Lab Green Preparat & Applicat Funct Mat, Wuhan 430062, Peoples R China
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Govt Arts Coll, PG & Res Dept Chem, Tiruvannamalai 606603, Tamil Nadu, IndiaGovt Arts Coll, PG & Res Dept Chem, Tiruvannamalai 606603, Tamil Nadu, India
Kayalvizhi, Muthu
Suresh, Jayaselan
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Govt Arts Coll, PG & Res Dept Chem, Tiruvannamalai 606603, Tamil Nadu, IndiaGovt Arts Coll, PG & Res Dept Chem, Tiruvannamalai 606603, Tamil Nadu, India
Suresh, Jayaselan
Karthik, Sekar
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Govt Arts Coll, PG & Res Dept Chem, Tiruvannamalai 606603, Tamil Nadu, IndiaGovt Arts Coll, PG & Res Dept Chem, Tiruvannamalai 606603, Tamil Nadu, India
Karthik, Sekar
Arun, Araichimani
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Govt Arts Coll, PG & Res Dept Chem, Tiruvannamalai 606603, Tamil Nadu, IndiaGovt Arts Coll, PG & Res Dept Chem, Tiruvannamalai 606603, Tamil Nadu, India