Synthesis and characterization of hyperbranched poly(urea-urethane)s based on AA* and B2B* monomers

被引:69
|
作者
Abdelrehim, M
Komber, H
Langenwalter, J
Voit, B
Bruchmann, B
机构
[1] Polymer Res Inst, D-01187 Dresden, Germany
[2] BASF AG, Polymer Res, D-67056 Ludwigshafen, Germany
关键词
hyperbranched; polyurethanes; NMR; thermal properties;
D O I
10.1002/pola.20154
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
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.
引用
收藏
页码:3062 / 3081
页数:20
相关论文
共 50 条
  • [31] Flexible Biocomposites with Enhanced Interfacial Compatibility Based on Keratin Fibers and Sulfur-Containing Poly(urea-urethane)s
    Aranberri, Ibon
    Montes, Sarah
    Azcune, Itxaso
    Rekondo, Alaitz
    Grande, Hans-Jurgen
    POLYMERS, 2018, 10 (10):
  • [32] Synthesis and properties of hyperbranched polyimides from A2+ B′B2 monomers and A2+ B′B2 + B2 monomers with various comonomer ratios
    Ying Chen
    Qiu-yu Zhang
    Nazakat Ali
    Jie Ren
    Jiu-li Sun
    Journal of Polymer Research, 2012, 19
  • [33] Synthesis and properties of hyperbranched polyimides from A2+ B′B2 monomers and A2+ B′B2 + B2 monomers with various comonomer ratios
    Chen, Ying
    Zhang, Qiu-yu
    Ali, Nazakat
    Ren, Jie
    Sun, Jiu-li
    JOURNAL OF POLYMER RESEARCH, 2012, 19 (04)
  • [34] Polymerization of A2 with B3 monomers:: A facile approach to hyperbranched poly(aryl ester)s
    Lin, Q
    Long, TE
    MACROMOLECULES, 2003, 36 (26) : 9809 - 9816
  • [35] Synthesis of arenesulfonated hyperbranched polyimide from A2+B3 monomers
    Chen, H
    Yin, J
    Xu, HJ
    POLYMER JOURNAL, 2003, 35 (03) : 280 - 285
  • [36] Synthesis and characterization of environmentally-friendly waterborne poly (urethane-urea)s
    Diez-Garcia, Inigo
    Santamaria-Echart, Arantzazu
    Eceiza, Arantxa
    Tercjak, Agnieszka
    EUROPEAN POLYMER JOURNAL, 2018, 99 : 240 - 249
  • [37] Synthesis and properties of hyperbranched aqueous poly(urethane-urea) via A2 + bB2 approach
    Liu, Dan
    Zeng, Shaomin
    Yao, Chang
    Chen, Aifang
    Chen, Zhonghua
    Xu, Zushun
    POLYMER BULLETIN, 2009, 63 (02) : 213 - 224
  • [38] Synthesis and characterization of MDI and functionalized polystyrene based poly(urethane-urea-amide)
    Kayalvizhi, Muthu
    Suresh, Jayaselan
    Karthik, Sekar
    Arun, Araichimani
    INTERNATIONAL JOURNAL OF PLASTICS TECHNOLOGY, 2016, 20 (01) : 128 - 142
  • [39] Siloxane-based segmented poly(urethane-urea) elastomer: Synthesis and characterization
    Askari, Fahimeh
    Barikani, Mehdi
    Barmar, Mohamad
    JOURNAL OF APPLIED POLYMER SCIENCE, 2013, 130 (03) : 1743 - 1751
  • [40] Synthesis of a novel glycerol based B3-type monomer and its application in hyperbranched polyester urethane-urea coatings
    Somisetti, Varaprasad
    Allauddin, Shaik
    Narayan, Ramanuj
    Raju, K. V. S. N.
    RSC ADVANCES, 2015, 5 (90) : 74003 - 74011