کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1398272 984352 2012 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Novel polyurethane produced from canola oil based poly(ether ester) polyols: Synthesis, characterization and properties
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
پیش نمایش صفحه اول مقاله
Novel polyurethane produced from canola oil based poly(ether ester) polyols: Synthesis, characterization and properties
چکیده انگلیسی

Two novel bio-based poly(ether ester) polyols (Liprol™ 270 and Liprol™ 320) with high functionality and low viscosity were synthesized from canola oil. A simple, two-step reaction sequence of epoxidation followed by hydroxylation and transesterification with 1,3-propanediol or 1,2-propanediol was used resulting in a versatile, low cost process. The chemical structures of the low molecular weight compounds in the polyols produced were identified by liquid chromatography–mass spectrometry (LC–MS) while the distribution of oligomers was elucidated by size exclusion chromatography (SEC). The feasibility of utilizing these polyols for the production of polyurethanes (PUs) was demonstrated by reacting them with commercial petrochemical derived diisocyanate. The physical properties of the PUs prepared were characterized by FTIR, dynamic mechanical analysis (DMA), modulated differential scanning calorimetry (MDSC), and thermo gravimetric analysis (TGA). It was found that Liprol derived PUs had high glass transition temperatures, good hydrolytic stability and alkali resistance, and formed highly cross-linked networks. This work is the first that establishes the production of polyols and their corresponding PUs from vegetable oil starting materials whose glycerol backbone was removed explicitly during the polyol synthesis reaction.

Figure optionsDownload as PowerPoint slideHighlights
► Novel bio-based poly(ether ester) polyols were synthesized from canola oil.
► The synthesized polyols had high functionality and low viscosity.
► The utilization of these polyols for polyurethanes production was demonstrated.
► Canola oil derived polyurethanes had high glass transition temperatures.
► These polyurethanes had improved hydrolytic stability and alkali resistance.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: European Polymer Journal - Volume 48, Issue 12, December 2012, Pages 2097–2106
نویسندگان
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