Synthesis and characterization of novel polyurethanes based on 4,4′-[1,4-phenylenedi-diazene-2,1-diyl]bis(2-carboxyphenol) and 4,4′-[1,4-phenylenedi-diazene-2,1-diyl]bis(2-chlorophenol) hard segments |
| |
| Affiliation: | 1. Center of Excellence in Polymer Science, Karnatak University, Dharwad 580 003, India;2. Catalysis Division, National Chemical Laboratory, Pune 411 008, India;1. Department of Microbiology, College of Life Sciences, Gwalior 474009, M.P., India;2. School of Science in Biotechnology, Jiwaji University, Gwalior 474011, M.P., India;3. Amity Institute of Nanotechnology, Amity University, Sector-125, Noida 201303, U.P., India;4. Department of Physics, Manav Rachna College of Engineering, Faridabad, Haryana, India;5. Department of Surgical Oncology, Cancer Hospital & Research Institute, Gwalior 474009, M.P., India;6. Department of Surgery, G. R. Medical College, Palace Road, Gwalior 474009, M.P., India;1. School of Physics and Chemistry, Research Center for Advanced Computation, Xihua University, Chengdu 610039, China;2. Department of Chemistry and Center for Computational Chemistry, University of Georgia, Athens, GA 30602, USA;1. Division of Nanobiotechnology, Department of Zoology, Auxilium College (Autonomous), Gandhi Nagar, 632 006, Vellore District, Tamil Nadu, India;2. Centre for Ocean Research, Sathyabama University, Chennai, 600 119, Tamil Nadu, India;3. Department of Chemistry, School of Advanced Sciences, VIT University, Vellore, 632014, Tamil Nadu, India;1. Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Department of Engineering Mechanics, Tsinghua University, Beijing 100084, China;2. School of Chemical and Biological Engineering, Lanzhou Jiaotong University, Lanzhou, 730070, China;1. Laboratory of Intelligent Devices and Thermal Control, Department of Mechanical Engineering, Inha University, Incheon 402-751, South Korea;2. National Center for Nanoprocess and Equipment, Korea Institute of Technology (KITECH), Gwangju, South Korea |
| |
| Abstract: | Eight novel polyurethanes (PUs) based on 4,4′-[1,4-phenylenedi-diazene-2,1-diyl]bis(2-carboxyphenol) and 4,4′-[1,4-phenylenedi-diazene-2,1-diyl]bis(2-chloro- phenol) as hard segments with four diisocyanates viz., 4,4′-diphenyl-methane diisocyanate, toluene 2,4-diisocyanate, isophorone diisocyanate and hexamethylene diisocyanate were prepared. Structural and thermal characterization of the segmented PUs were determined by FT-IR, UV spectrophotometry, fluoroscence spectroscopy, 1H NMR, 13C NMR spectroscopy and DTA/TGA analysis. All the PUs contain domains of semi-crystalline and amorphous structures, as indicated by X-ray diffraction. PUs were soluble in polar aprotic solvents like N-methyl-2-pyrrolidone (NMP), dimethyl formamide (DMF) and dimethylsulfoxide (DMSO). |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
